vibrating screen working principle

vibrating screen working principle

When the smaller rock has to be classified a vibrating screen will be used.The simplest Vibrating Screen Working Principle can be explained using the single deck screen and put it onto an inclined frame. The frame is mounted on springs. The vibration is generated from an unbalanced flywheel. A very erratic motion is developed when this wheel is rotated. You will find these simple screens in smaller operations and rock quarries where sizing isnt as critical. As the performance of this type of screen isnt good enough to meet the requirements of most mining operations two variations of this screen have been developed.

In the majority of cases, the types of screen decks that you will be operating will be either the horizontal screen or the inclined vibrating screen. The names of these screens do not reflect the angle that the screens are on, they reflect the direction of the motion that is creating the vibration.

An eccentric shaft is used in the inclined vibrating screen. There is an advantage of using this method of vibration generation over the unbalanced flywheel method first mentioned. The vibration of an unbalanced flywheel is very violent. This causes mechanical failure and structural damage to occur. The four-bearing system greatly reduces this problem. Why these screens are vibrated is to ensure that the ore comes into contact will the screen. By vibrating the screen the rock will be bounced around on top of it. This means, that by the time that the rock has traveled the length of the screen, it will have had the opportunity of hitting the screen mesh at just the right angle to be able to penetrate through it. If the rock is small enough it will be removed from the circuit. The large rock will, of course, be taken to the next stage in the process. Depending upon the tonnage and the size of the feed, there may be two sets of screens for each machine.

The reason for using two decks is to increase the surface area that the ore has to come into contact with. The top deck will have bigger holes in the grid of the screen. The size of the ore that it will be removed will be larger than that on the bottom. Only the small rock that is able to pass through the bottom screen will be removed from the circuit. In most cases the large rock that was on top of each screen will be mixed back together again.

The main cause of mechanical failure in screen decks is vibration. Even the frame, body, and bearings are affected by this. The larger the screen the bigger the effect. The vibration will crystallize the molecular structure of the metal causing what is known as METAL FATIGUE to develop. The first sign that an operator has indicated that the fatigue in the body of the screen deck is almost at a critical stage in its development are the hairline cracks that will appear around the vibrations point of origin. The bearings on the bigger screens have to be watched closer than most as they tend to fail suddenly. This is due to the vibration as well.

In plant design, it is usual to install a screen ahead of the secondary crusher to bypass any ore which has already been crushed small enough, and so to relieve it of unnecessary work. Very close screening is not required and some sort of moving bar or ring grizzly can well be used, but the modern method is to employ for the purpose a heavy-duty vibrating screen of the Hummer type which has no external moving parts to wear out ; the vibrator is totally enclosed and the only part subjected to wear is the surface of the screen.

The Hummer Screen, illustrated in Fig. 6, is the machine usually employed for the work, being designed for heavy and rough duty. It consists of a fixed frame, set on the slope, across which is tightly stretched a woven-wire screen composed of large diameter wires, or rods, of a special, hard-wearing alloy. A metal strip, bent over to the required angle, is fitted along the length of each side of the screen so that it can be secured to the frame at the correct tension by means of spring-loaded hook bolts. A vibrating mechanism attached to the middle of the screen imparts rapid vibrations of small amplitude to its surface, making the ore, which enters at the top, pass down it in an even mobile stream. The spring-loaded bolts, which can be seen in section in Fig. 7, movewith a hinge action, allowing unrestricted movement of the entire screening surface without transmitting the vibrations to the frame.

One, two, or three vibrators, depending on the length of the screen, are mounted across the frame and are connected through their armatures with a steel strip securely fixed down the middle of the screen. The powerful Type 50 Vibrator, used for heavy work, is shown in Fig. 7. The movement of the armature is directly controlled by the solenoid coil, which is connected by an external cable with a supply of 15-cycle single-phase alternating current ; this produces the alternating field in the coil that causes the up-and-down movement of the armature at the rate of thirty vibrations per second. At the end of every return stroke it hits a striking block and imparts to the screen a jerk which throws the larger pieces of ore to the top of the bed and gives the fine particles a better chance of passing through the meshes during the rest of the cycle. The motion can be regulated by spiral springs controlled by a handwheel, thus enabling the intensity of the vibrations to be adjusted within close limits. No lubrication is required either for the vibrating mechanism or for any other part of the screen, and the 15-cycle alternating current is usually supplied by a special motor-generator set placed somewhere where dust cannot reach it.

The Type 70 Screen is usually made 4 ft. wide and from 5 to 10 ft. in length. For the rough work described above it can be relied upon to give a capacity of 4 to 5 tons per square foot when screening to about in. and set at a slope of 25 to 30 degrees to the horizontal. The Type 50 Vibrator requires about 2 h.p. for its operation.

The determination of screen capacity is a very complex subject. There is a lot of theory on the subject that has been developed over many years of the manufacture of screens and much study of the results of their use. However, it is still necessary to test the results of a new installation to be reasonably certain of the screen capacity.

A general rule of thumb for good screening is that: The bed depth of material at the discharge end of a screen should never be over four times the size opening in the screen surface for material weighing 100 pounds per cubic foot or three times for material weighing 50 pounds per cubic foot. The feed end depth can be greater, particularly if the feed contains a large percentage of fines. Other interrelated factors are:

Vibration is produced on inclined screens by circular motion in a plane perpendicular to the screen with one-eighth to -in. amplitude at 700-1000 cycles per minute. The vibration lifts the material producing stratification. And with the screen on an incline, the material will cascade down the slope, introducing the probability that the particles will either pass through the screen openings or over their surface.

Screen capacity is dependent on the type, available area, and cleanliness of the screen and screenability of the aggregate. Belowis a general guide for determining screen capacity. The values may be used for dried aggregate where blinding (plugged screen openings), moisture build-up or other screening problems will not be encountered. In this table it is assumed that approximately 25% of the screen load is retained, for example, if the capacity of a screen is 100 tons/hr (tph) the approximate load on the screen would be 133 tph.

It is possible to not have enough material on a screen for it to be effective. For very small feed rates, the efficiency of a screen increases with increasing tonnage on the screen. The bed of oversize material on top of the marginal particlesstratification prevents them from bouncing around excessively, increases their number of attempts to get through the screen, and helps push them through. However, beyond an optimum point increasing tonnage on the screen causes a rather rapid decrease in the efficiency of the screen to serve its purpose.

Two common methods for calculating screen efficiency depend on whether the desired product is overs or throughs from the screen deck. If the oversize is considered to be the product, the screen operation should remove as much as possible of the undersize material. In that case, screen performance is based on the efficiency of undersize removal. When the throughs are considered to be the product, the operation should recover as much of the undersize material as possible. In that case, screen performance is based on the efficiency of undersize recovery.

These efficiency determinations necessitate taking a sample of the feed to the screen deck and one of the material that passes over the deck, that is, does not pass through it. These samples are subjected to sieve analysis tests to find the gradation of the materials. The results of these tests lead to the efficiencies. The equations for the screen efficiencies are as follows:

In both cases the amount of undersize material, which is included in the material that goes over the screen is relatively small. In Case 1 the undersize going over the screen is 19 10 = 9 tph, whereas in Case 2 the undersize going over is 55 50 = 5 tph. That would suggest that the efficiency of the screen in removing undersize material is nearly the same. However, it is the proportion of undersize material that is in the material going over the screen, that is, not passed through the screen, that determines the efficiency of the screen.

In the first cases the product is the oversize material fed to the screen and passed over it. And screen efficiency is based on how well the undersize material is removed from the overs. In other cases the undersize material fed to the screen, that is, the throughs, is considered the product. And the efficiency is dependent on how much of the undersize material is recovered in the throughs. This screen efficiency is determined by the Equation B above.An example using the case 1 situation for the throughs as the product gives a new case to consider for screen efficiency.

Generally, manufacturers of screening units of one, two, or three decks specify the many dimensions that may be of concern to the user, including the total headroom required for screen angles of 10-25 from the horizontal. Very few manufacturers show in their screen specifications the capacity to expect in tph per square foot of screen area. If they do indicate capacities for different screen openings, the bases are that the feed be granular free-flowing material with a unit weight of 100 lb/cu ft. Also the screen cloth will have 50% or more open area, 25% of total feed passing over the deck, 40% is half size, and screen efficiency is 90%. And all of those stipulations are for a one-deck unit with the deck at an 18 to 20 slope.

As was discussed with screen efficiencies, there will be some overs on the first passes that will contain undersize material but will not go through the screen. This material will continue recirculating until it passes through the screen. This is called the circulating load. By definition, circulating load equals the total feed to the crusher system with screens minus the new feed to the crusher. It is stated as a percentage of the new feed to the crusher. The equation for circulating load percentage is:

To help understand this determination and the equation use, take the example of 200 tph original or new material to the crusher. Assume 100% screen efficiency and 30% oversize in the crusher input. For the successive cycles of the circulating load:

The values for the circulating load percentages can be tabulated for various typical screen efficiencies and percents of oversize in the crusher product from one to 99%. This will expedite the determination for the circulating load in a closed Circuit crusher and screening system.

Among the key factors that have to be taken into account in determining the screen area required is the deck correction. A top deck should have a capacity as determined by trial and testing of the product output, but the capacity of each succeeding lower deck will be reduced by 10% because of the lower amount of oversize for stratification on the following decks. For example, the third deck would be 80% as effective as the top deck. Wash water or spray will increase the effectiveness of the screens with openings of less than 1 in. in size. In fact, a deck with water spray on 3/16 in. openings will be more than three times as effective as the same size without the water spray.

For efficient wet or dry screeningHi-capacity, 2-bearing design. Flywheel weights counterbalance eccentric shaft giving a true-circle motion to screen. Spring suspensions carry the weight. Bearings support only weight of shaft. Screen is free to float and follow positive screening motion without power-consuming friction losses. Saves up to 50% HP over4- bearing types. Sizes 1 x 2 to 6 x 14, single or double deck types, suspended or floor mounted units.Also Revolving (Trommel) Screens. For sizing, desliming or scrubbing. Sizes from 30 x 60 to 120.

TheVibrating Screen has rapidly come to the front as a leader in the sizing and dewatering of mining and industrial products. Its almost unlimited uses vary from the screening for size of crusher products to the accurate sizing of medicinal pellets. The Vibrating Screen is also used for wet sizing by operating the screen on an uphill slope, the lower end being under the surface of the liquid.

The main feature of the Vibrating Screen is the patented mechanism. In operation, the screen shaft rotates on two eccentrically mounted bearings, and this eccentric motion is transmitted into the screen body, causing a true circular throw motion, the radius of which is equivalent to the radius of eccentricity on the eccentric portion of the shaft. The simplicity of this construction allows the screen to be manufactured with a light weight but sturdy mechanism which is low in initial cost, low in maintenance and power costs, and yet has a high, positive capacity.

The Vibrating Screen is available in single and multiple deck units for floor mounting or suspension. The side panels are equipped with flanges containing precision punched bolt holes so that an additional deck may be added in the future by merely bolting the new deck either on the top or the bottom of the original deck. The advantage of this feature is that added capacity is gained without purchasing a separate mechanism, since the mechanisms originally furnished are designed for this feature. A positivemethod of maintaining proper screen tension is employed, the method depending on the wire diameter involved. Screen cloths are mounted on rubber covered camber bars, slightly arched for even distribution.

Standard screens are furnished with suspension rod or cable assemblies, or floor mounting brackets. Initial covering of standard steel screen cloth is included for separations down to 20 mesh. Suspension frame, fine mesh wire, and dust enclosure are furnished at a slight additional cost. Motor driven units include totally-enclosed, ball-bearing motors. The Vibrating Screen can be driven from either side. The driven sheave is included on units furnished without the drive.

The following table shows the many sizes available. Standard screens listed below are available in single and double deck units. The triple and quadruple deck units consist of double deck units with an additional deck or decks flanged to the original deck. Please consult our experienced staff of screening engineers for additional information and recommendations on your screening problems.

An extremely simple, positive method of imparting uniform vibration to the screen body. Using only two bearings and with no dead weight supported by them, the shaft is in effect floating on the two heavy-duty bearings.

The unit consists of the freely suspended screen body and a shaft assembly carried by the screen body. Near each end of the shaft, an eccentric portion is turned. The shaft is counterbalanced, by weighted fly-wheels, against the weight of the screen and loads that may be superimposed on it. When the shaft rotates, eccentric motion is transmitted from the eccentric portions, through the two bearings, to the screen frame.

The patented design of Dillon Vibrating Screens requires just two bearings instead of the four used in ordinary mechanical screens, resulting in simplicity of construction which cuts power cost in half for any screening job; reduces operating and maintenance costs.

With this simplified, lighter weight construction all power is put to useful work thus, the screen can operate at higher speeds when desired, giving greater screening capacity at lower power cost. The sting of the positive, high speed vibration eliminates blinding of screen openings.

The sketches below demonstrate the four standard methods of fastening a screen cloth to the Dillon Screen. The choice of method is generally dependent on screen wire diameters. It is recommended that the following guide be followed:

Before Separation can take place we need to get the fine particles to the bottom of the pile next to the screen deck openings and the coarse particles to the top. Without this phenomenon, we would have all the big particles blocking the openings with the fines resting atop of them and never going through.

We need to state that 100% efficiency, that is, putting every undersize particle through and every oversize particle over, is impossible. If you put 95% of the undersize pieces through we in the screen business call that commercially perfect.

ore, rock & aggregate screening (complete guide)

ore, rock & aggregate screening (complete guide)

A simple definition of a screen is a machine with surface(s) used to classify materials by size. Screening is defined as The mechanical process which accomplishes a division of particles on the basis of size and their acceptance or rejection by a screening surface.

Knowledge of screening comes mainly from experience. However, through experiment, test facilities and compilation of field data, reliable criteria have been developed by screen manufacturers. This factual data is now tabulated for use in selecting the type and size of screen best suited for the job.

The most common application of a vibrating screen is to separate an unconfined conglomerate of materials into different size fractions. Other popular uses of screens are scalping, washing, dewatering and dedusting. A review of the duty is essential to know the type of screen to recommend. When this is established, the capacity chart is then used to determine the size of unit required.

Nordberg-Lokomo supplies different types of screens, each designed for a specific range of duty. Occasionally there is a choice between the types we offer. In these cases when there is doubt, you can rely on Nordberg-Lokomo experience to help you make the selection.

COARSE FRACTION Particles which pass over the screen deck, FINE FRACTION Particles which pass through the screen deck. SEPARATION SIZE/ SPLIT SIZE Particle size at which feed separates into two products (coarse fraction and fine fraction). OVERSIZE Material larger than the hole size. UNDERSIZE Material smaller than the hole size. HALF SIZE Material smaller than half of the hole size. SCREENING CAPACITY (Q)Amount of material passing through the screen deck in tonnes/hour FEEDING CAPACITY Amount of material fed to the screen deck in tonnes/hour EFFICIENCY OF SCREENING (EFFICIENCY OF UNDERSIZE RECOVERY)Amount of material smaller than the hole size in undersize compared to the total amount of material smaller than the hole size in the feed.

The particle distribution of the feed has an essential impact on purity. See three examples in figure 1. In each one of them the efficiency is 90 %, but the undersize proportion of the coarse fraction varies (3.2 %, 9.1 %, 23 %).

Factors effecting the screening can roughly be divided into three groups: characteristics of material (B, C, F, K, L) characteristics of screen (D, E, AF) characteristics of screening element (A, G, H, J)

[t/h] (passing through) A = Nominal capacity [(m/h)/m] (passing through) B = Oversize factor C = Halfsize factor D = Deck location factor E = Wet screening factor F = Material weight [t/m] (bulk density) G = Efficiency factor H = Shape factor for mesh holes J = Factor for proportion of holes in the mesh K = Factor for crushed stone and gravel L = Factor for humidity content AF = Effective screening area [m]

The factors are obtained from diagrams based on relationships observed empirically. Since these factors are known, it is consequently possible to calculate the specific capacity of the screen in tons/h per square meter.

The amount of oversize describes the amount of the particles of the limit size. Particles which are considerably larger than the hole do not make screening difficult. Large stones push stones of limit size through the screening element.

The quantity of the half size is used to inform / present the quantity of the fine material. Material smaller than half the hole size passes through the screening element very easily. If a feed contains a lot of fine material, it can be fed in large quantities onto a screen. If there is little fine material the screening capacity falls. This is due to the fact that there are a lot of particles of limit/critical size. The throughput of particles of limit size (0.5 1.0 x hole) is very poor.

Flaky (thickness is small, relative to the other two dimensions) and elongated (length is larger than other two dimensions) stones are the most difficult to screen. They pass over the screen deck laying on their widest side. At worst they become wedged in holes and thus block the whole screen deck.

When the humidity is under 3 % it has no significant importance. The problems start at 4 5 %. At 9 30 % screening is very difficult. When there is more water the screening gets easier, and it is close to separation of water screening.

Stroke length, rotation speed, stroke angle, and screen inclination form together parameters which affect the operation of the screen. These fundamental factors have to be in proportion to each other. Stroke length and material amplitude have an effect on:

how the holes of the element stay unblocked. If the stroke length is too small also the material amplitude stays too small and the element gets blocked. The problem arises when the hole size is large (50 mm or more).

Acceleration of the screen box can be calculated by the stroke and rotation speed. When stroke angle and inclination are taken into the calculation, the vertical acceleration can be found. Vertical acceleration has an effect on the screening efficiency and the rate of travel.

Acceleration should be 4.5-5.5 x G (G=9.81m/s) with horizontal screens to reach a good screening result. To avoid structural damage for the screening unit, no acceleration greater than 6-7 times G are allowed.

Stroke angle has an effect on the material amplitude and the rate of travel. The most suitable stroke angle for horizontal screens is 55-60 degrees. Too upright a position can reduce the rate of travel. Horizontal stroke angle can improve the rate of travel but reduce screening efficiency. It also increases the wear rate of the mesh.

Speed of travel can be increased by inclining the screening surface. If the surface is greatly inclined, the stroke must be short to prevent material sliding over the mesh too quickly. Inclination of the surface can keep the mesh holes open more easily.

The bed of material may not exceed a height more than 3-5 times the size of the mesh hole on the discharge side of the screening surface. A higher bed of material will reduce the screening efficiency. Feeding capacity for each mesh size depends on the width of the screen. To get efficient screening results the depth of material bed must be at least 2 times the mesh hole diameter on the end side of the surface. Then volume of oversize will determine the width of the screen.

The depth of material bed should be within allowable limits on the beginning and the end of the surface when choosing the screen.Screening area is not theonly dominant parameter while choosing the screen. In practice the length is 2- 3 times the width.

A deck factor should be used when calculating lower decks in muitideck screens. In lower decks the feed drops not only at the beginning of the deck, but also later in the direction of the flow. That is why material close to separation size will not be screened out.

Effective screening area is the area where material can drop down through the surface. Effective surface area is about 0.7-0.9 times the whole area. The whole area is determined by the inside parameters of the screening unit: length times width.

Figure 3. Schematic diagram showing how the screening effect varies along the screen deck. Stratification takes place within zone 1, screening of fine undersize particles (75% of the size of the screen apertures) takes place within zone 2 and screening of critical undersize particles, i.e. particles of a size close to the size of the screen apertures, takes place within zone 3.

The amount of loading influences screening efficiency. In practice it is impossible to reach 100% efficiency. Maximum efficiency is about 95%. In most of the cases 90% is achieved and the screen can be said to be under 100% loading.

The greater the open area of the mesh, the more effective is the throughput. When determining the open area of the mesh, the diameter of the wire between holes in different meshes differs, and has to be taken into consideration.

The type of the mesh will have an effect on screening efficiency. The most significant difference will be in special screening cases. For example while screening elongated material, mesh should be of the vibrating type (rubber or harpmesh)

By scalping it is meant screening of coarse material in order to remove the undersize, typically before a primary crusher. Because of the coarse feed the top deck, which may be the only one, is often of a grizzly type. i.e. grizzly bars as opposed to mesh. This type of screening calls for a robust construction whilst there is no requirement for screening efficiency.

Leaving out the ancient trommel screens, stationary grids, and similar types, the following means are used to make the screen vibrate. All screens today are vibrated by various methods to pass the undersize through the apertures of the screen mesh or grizzly bars.

By freely vibrating screens one means screens that are supported on springs, and the box is vibrated by a vibrating mechanism (also called an exciter) which vibrates the screen box in various ways, depending on the type of vibrating unit.

Screens with a circular motion are the most common type. The vibration is circular because of a single eccentric shaft mechanism. This movement would not move the material forward, unless the screen is inclined in the direction of the material flow. This in turn means that the screening efficiency is not quite as good as a horizontal screen. The capacity as such is often higher as this screen is able to transport the material more quickly. The higher the inclination, the greater the transport ability. Inclination is typically 12 20. The inclination also helps to prevent pegging.

The depth of this material layer is more critical with a circular motion screen than with a horizontal screen. The inclination reduces screening efficiency. This type of screen may be used for almost any application. They are also cheaper to produce.

The vibration of this type screen is created by two eccentric shafts, rotating in opposite directions. This gives the box a linear motion. The stroke angle would depend on the relation of the eccentric weights of the two shafts to each other. Because of the linear stroke the material is moved in the direction of the stroke and the screen may be installed horizontally. That is why they are often called horizontal screens. The inclination would be typically 0 5.

The horizontal screen gives high screening efficiency, and they are often used for final and fine screening. Another advantage over inclined screens is their lower profile and therefore, horizontal screens mean lower structures and buildings, and shorter conveyors.

Elliptical motion can be achieved by various means. One method is by using three eccentric shafts, two of which would create the long axis and the third, the short one. These screens are used in special applications where the aim is to gain advantages of both circular and linear motion screens. It is a compromise however, there would also be a measure of disadvantages. These screens are typically installed at an 0 5 angle.

The eccentric shaft(s) of this screen type are connected both to the screen box and the foundation. The two shaft type would give a circular motion whilst the single shaft type would give this near the vibrating unit, and differ with the loading, depending on the action at each end.

These screens are used mainly for screening coarse material. The screens become heavy, and the dynamic forces which the foundation has to absorb, are a disadvantage. Brute force screens are installed 12 20 inclined.

The vibration of this type of screen is created by the resonance between the under-frame and the screen box or decks, and because of the resonance little energy is needed to vibrate the box. These screens are always installed horizontally.

The advantage of this type is the high efficiency as the screen can be very long, and therefore are mainly used for fine screening. They also have a low profile which can be advantageous. However they have very heavy and expensive structures.

Sizers are generally small and equipped with multi decks to assist screening. The products of two or more decks are often blended in the chute work of the screen. They have very high capacity because of the inclination. The apertures of the meshes need to be considerably larger than the cut, and thus affect the efficiency. This is compensated for by the blending. The advantage of this type is that it can be used for difficult material with less blinding than with other types.

The steep angle at the feed end gives the material a high velocity, some 3 4 m/s. Later the angle levels out and slows down the material to 1 1.5 m/s in the middle and 0.5 0.8 m/s at the discharge end. This is where the screening efficiency is achieved. These screens are generally large and used in high tonnage plants, particularly in mining where fewer fractions are separated.

There are a number of special screens, of which the flip flop is an example. The special narrow rubber mesh strips are installed perpendicularly between two separate frames. The meshes being attached to one frame on one side and to the other at the other side the bulk receives extremely high accelerations. This helps screening of wet, dirty and other difficult materials.

This table is a guide only to the parameters of a horizontal screen. When solving screening problems, take also into account the size parameters of the material, screen cloths and physical screening conditions.

7 fun facts about the mining industry

7 fun facts about the mining industry

Around the world, countries of all shapes and sizes depend on the vast wealth of resources waiting just underneath the surface of the planet. For centuries, mankind has used mining techniques as the basis for ushering entire civilizations into grand new eras.

During the gold and silver rushes in Western America, some of the most famous and successful miners were Irish immigrants or of Irish descent. This phenomenon gave rise to the phrase The Luck of the Irish.

From the smartphone in your pocket to the computer you rely on for work, modern electronics use gold, copper, zinc (which is 100 percent recyclable, by the way), and several other minerals to function properly.

Its believed that upwards of 80% of the worlds gold has yet to be discovered and is still buried beneath the earths surface. And did you know that pure gold is so soft that it can be molded with nothing more than a simple hand tool?

The world of mining has been a benefit to mankind since its inception, and thanks to the innovations in vibratory equipment from General Kinematics it will continue to be a beneficial trade in the coming decades. Let GK put their revolutionary mining technology to work for you.

I appreciate what you said about petroleum and how it is used in plastics and crayons. Using the right equipment to extract precious fuel is essential to many industries. If I were to work in the mining career field, I would make sure to utilize the best equipment available.

I didnt realize that petroleum gathered in mining is eventually used to create items such as plastics and DVDs. There are a lot of materials that are mined, so I wonder what material is mined for the most these days. Is there anything else like Petroleum that is used to create a vast amount of daily items?

My husband plans to invest in the mining business; thats why hes currently looking for Gold cube equipment that could be used in collecting the gold. Since I barely know anything about this industry, I never knew that gold has a soft texture which can be molded into anything. Its also interesting to learn that pyrite is considered a falses gold.

Its interesting to learn that 80% of gold in the world has yet to be discovered. My brother is thinking of getting into the mining industry as a career this summer. Ill tell him about how there is gold yet to be discovered, and that he should hire a consultant so he can get assistance with mining.

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When it comes to buying the right equipment for your mining operation, there are a number of factors to consider. From your budget to the size of your operation and beyond, its important to do the research so you install the equipment that is going to help your operation thrive. But youve likely already considered []

When it comes to buying the right equipment for your mining operation, there are a number of factors to consider. From your budget to the size of your operation and beyond, its important to do the research so you install the equipment that is going to help your operation thrive. But youve likely already considered []

Every day, 6,300 people die as a result of occupational accidents or work-related diseases. Thats more than 2.3 million deaths per year. Since 2003, the International Labour Organization (ILO) has celebrated World Safety Day on April 28. World Safety Day helps raise awareness of occupational safety and health. Through worldwide events and activities on World []

Every day, 6,300 people die as a result of occupational accidents or work-related diseases. Thats more than 2.3 million deaths per year. Since 2003, the International Labour Organization (ILO) has celebrated World Safety Day on April 28. World Safety Day helps raise awareness of occupational safety and health. Through worldwide events and activities on World []

In Denver, Colorado from February 24-27 mining industry professionals from around the world gathered to attend The 2019 SME Annual Conference and Expo. Thousands of key players in the mining and metallurgy market gathered to exchange ideas and discover new technologies to improve their extraction processes. General Kinematics attended this years event, sharing discoveries and []

In Denver, Colorado from February 24-27 mining industry professionals from around the world gathered to attend The 2019 SME Annual Conference and Expo. Thousands of key players in the mining and metallurgy market gathered to exchange ideas and discover new technologies to improve their extraction processes. General Kinematics attended this years event, sharing discoveries and []

equipment | classifieds | icmj prospecting & mining journal

equipment | classifieds | icmj prospecting & mining journal

New and used gold mining equipment, including shaker tables, washplants, mills, crushers, motors, dredges, drills, concentrators, drywashers, flotation cells, pumps, jigs, furnaces, ore bins, conveyors, detectors, screens, sluices, highbankers, trommels, gold pans, augers, hoppers, cranes, amalgamators, and more

BRAND NEW HARD ROCK MINING equipment available for immediate order, from Mt. Baker Mining and Metals. We are a USA manufacturer located in Bellingham, WA. Call us today at (360)595-4445 for more information.

3x6 Ball Mill (1TPH), complete with drive, 20hp motor, balls, frame -- $37,000 1 Ton/hr Turn-key Ore Processor, ready-to-run -- $99,500 6x10 Jaw Crusher (1-3TPH), 7.5hp 3-phase -- $8,600 10x16 Jaw Crusher (5-20TPH), 20hp 3-phase -- $16,700 Mini Mobile Gold Processor 1 Ton/hr, Honda 22hp gas -- $16,000 16x12 Hammer Mill (1TPH), 15hp, 3-phase -- $12,325 24x16 Hammer Mill (2TPH), 30hp, 3-phase -- $22,900 4x8 Shaker Table (1TPH), single phase -- $14,900

2x4 w/ 1/2 ton extra balls. In barely used condition Used briefly for gold mine research & design at the shop only, never seen production work at the mine Portable, trailer-mounted. Comes with: 15x30 long stacking conveyor 6x10 Hopper & stand frame mounted Stationary single-deck grizzly screen Lots of pictures. All the info about everything from specs to production to what uses from an expert engineer, call for details, inspection, close up pictures, shipping etc.

B-70 and B-701 Mc Englevan (MIFCO) metal melting pot furnaces with high pressure blowers. -- $9,500, each Exhaust and pouring system for B-70 MIFCO furnace consists of a 5X9 hood and 20-foot-tall chimney with 1hp fan, trolly with cantilever crucible extractor, crucible tongs and pouring table. -- $10,000 Bullion molds for silver, 50 to 500 ounce plus conical mold to separate metal and slag. -- $5,000 Chemical fume hood on stand, 4-foot-wide, with 3/16 thick safety glass front sash and exhaust fan. Excellent conditionno rust, Alberine stone working surface. We have 2. -- $2,500 each Chemical Scrubber for hood, 1,000 CFM with 50-gallon sump, circulating pump and exhaust fan. -- $2,000 Thum cell electrolytic silver refining system: 500+ ounce per day with power supply and cables. Shown in October 2018 ICMJ. Comes with electrolyte silver dissolver, crystal cleaning station, silver crystal drying oven. We have enough spare parts to make 3 cells. -- $25,000 each Olympus binocular stereo microscope Model SF-20, 30X magnification with fluorescent ring light. -- $195. OMYNO binocular boom microscope on 11-inch pole, 10-65x magnification with wide field eyepieces. Excellent for looking at large specimens. -- $395 Fiber optic illuminator for microscope -- $125 Micro sample splitter with pans, excellent for splitting gold placer. 2 each in stock. -- $95 each Laboratory Scale, Mettler AE160, capacity 75 grams, accuracy, 1/10 mg, reads 4 places to right of decimal. Professionally calibrated in May 2021. -- $1,500 Chain-o-matic Ainsworth double pan balance with set of weights. -- $1,200 12x12x12 lab drying oven. -- $500 Sweco, 4- foot diameter 3-deck sieve with 6 spare sieve. -- s$9,500 Lightnin mixers, air operated with 4 shafts and 3diameter props. -- $1,000 each

EQUIPMENT IN GOOD WORKING condition: Knelson MD30 Concentrator$18,000. 24 ga Gardner Denver mucker$6,000. (2) 24 ga 1-1/2 ton rocker dump and 1 end dump mine cars$2,000 ea. Stutenroth impact mill w/50 HP motor$6,000. GD 63 Jackleg drill$1,500. (970)560-0685 or send email.

25mm OD core drill comes with backpack, Shaw gas-powered engine drill, coupling, diamond drill bit, loose materials bit, core cutter, 2 compression tanks, core breaker, knockout rod, barrel adapter, T-handle, aluminum gas can and 20 feet of drill steel. Excellent condition. Asking $2,800, includes delivery in the USA. UNION GULF RESOURCES, CORP. Send email or call (619)609-0234.

FOR SALE15 TON GIBSON ROD MILL, w/roll. Mint. Jaw, conveyor, feeder, classifier (2) table. Send $8. 14 pages, pictures, W.W. Gibson instructions. OREGON MINE SERVICE, PO Box 205, Sumpter, OR 97877. $15,000 Firm.

ORO INDUSTRIES TROMMEL and Centrifuge. Trommel is 24 diameter by 20 long, 10HP electric drive with Browning gearbox. 25 - 30 YPH. Centrifuge is 20 diameter with 3HP electric motor with 15 YPH production rate. Call (307)922-4754, MATT.

DENVER 5x4 SRL PUMP, 25 HP; Galigher 2 rubber-lined sump pump; 48 Sweco screen; Denver #12 drives/ 48 Dorr Oliver thickener mechanism; (2) 100 amp SS shut off boxes. MILLER EQUIPMENT, Tel: (865)475-7977, or send email.

Powered by JCB200 Excavator with 400 Link Belt Undercarriage. 100YPH Gold Watch Project washplant. 5 cylinder Duetz water pump. 24x8 container included with extra parts & supplies. Setup to work on land or ocean. Located in Nome, AK. Ready to work. Pictures available. $139,000 $79,000. Call ARNE BELSBY, send email or call(509)979-8265.

WANTED: WET DRUM MAGNETIC SEPARATORS in operating condition with feed tanksCASH BUYER FOR SALE: Deister 999 triple table in 40 trailer with sand screw & controls, very good condition for sale. LARRY (602)377-3774 Call or send email.

FOR SALE: 4x3 Denver SRL pump, 7.5 HP; 5x4 Denver SRL pump, 25 HP; 2 Galigher rubber-lined pump 5HP; 48 Sweco SD screen, Denver #12 drives, 48 Dorr Oliver thickener mechanism; (2) 100 amp SS shut off boxes. MILLER EQUIPMENT, Tel: (865)475-7977or send email.

EQUIP. SETUP FOR REMOTE MINE-MOUTH, NO POWER, OPS. Complete Assembly consisting of: M35A2 multi-fuel Army truck w/ mounted 10x16 rebuilt Austin-Western crusher (driven by new 50 HP Kohler gas motor). Crusher discharges to new vibratory overs/unders classifier. Unders supplies used Kamflex elevator discharging to new Stutenroth 2 tph impact mill w/ new 18 hp clutched Honda gas motor. Mill discharges to new vibratory variable speed classifier. All equip. has approx. 12 hrs. use. $34,000 OBO. If not sold by 10/31/21, equipment will be parted out & sold separately. (208)521-3649, leave a message or send email.

COMPLETE PLACER PLANT OPERATION in Arizona. Buy Any or All. Very Low Hours: Rock Systems feeder/hopper/grizzly/conveyer$30,000. Goldlands 50 YPH trommel$35,000. 6 Pump$5,000. Yukon Sluice$3,000. Goldlands sizing separator$9,000. MSI Water Clarification Unit$175,000. MSI Exit Conveyor $7,000. U-Tech Finishing Table$1,900. 4 Honda Pumps$4,000 ea. Power Panel$10,000. 75KW Generator$22,000. Cargo Trailer with tools etc.$8,000. Goldlands Spiral Separator$2,500. Much more: tools, generators, water tank, diesel tank, welding etc. Send email.

NOME 10-inch suction dredge Dola Mae 50-foot catamaran, (2) new 115 HP Yamaha 4-stroke engs. 5.9 Cummins diesel, 6X8 Berkeley water pump, new 6212 Garmin GPS. 16-wheel trailer. Sleeping quarters. $155K Send email or call WES (928)710-8404.

200tph alluvial gold vibrating screen washing plant - china vibrating screen washing plant, gold vibrating screen washing plant

200tph alluvial gold vibrating screen washing plant - china vibrating screen washing plant, gold vibrating screen washing plant

*If the supplier with the above tags do not give you the according discount or service, you can click "Contact Us" to make a complaint. If what you said is true, our professional team will help you to handle this problem.

china jaw crusher manufacturer, ball mill, shaking table supplier - jiangxi hengchang mining machinery manufacturing co., ltd

china jaw crusher manufacturer, ball mill, shaking table supplier - jiangxi hengchang mining machinery manufacturing co., ltd

Jaw Crusher, Ball Mill, Shaking Table manufacturer / supplier in China, offering High Efficient Gold Recovery Machine Alluvial and Placer Gold Mining Equipment Sand Gold Separation Recovery Plant, 1 Ton Ball Mill for Rock Gold Mining Grinding Plant 900 X 1800 Ball Mill for Gold Grinding Plant, Factory Price Grinding Process Stone Gold Ore Ball Mill Rock Stone Gold Grinder Ball Mill Grinding and so on.

Jiangxi Hengchang Mining Machinery Manufacturing Co., Ltd. is located in No. 3 Chuangye Road, Industrial Park, Shicheng County, Ganzhou City, Jiangxi Province, China. Our company is engaged in providing the complete mineral processing equipment research, development, design and production from1985 years, So we have accumulated rich experience in design and production. Enterprise in mineral processing equipment industry has had a positive effect, set up the good reputation. And mainly the manufacture of ...

portable trommel vibrating screening mining wash plant for gold recovery - mining & construction solutions from henan dewo machinery

portable trommel vibrating screening mining wash plant for gold recovery - mining & construction solutions from henan dewo machinery

Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and drying production line. Dewo Machinery can provide high quality products, as well as customized optimized technical proposal and one station after- sales service.

Reverse Trommel Gold Washing Plant - sinolinking.com. SLK-GM10 Reverse Helix Gold Trommel Wash Plant. Features:-Capacity 10-15 tons per hour.-Designed specifically according to client's mining situation to ensure the highest recovery rate-Mobile type with wheels and towing mechanism-Using reverse helix gold trommel + sluice box with rubber mat for highest gold recovery rate-Low cost,

Mobile gold washing plant, is composed by hopper, trommel, chassis, tires, turntable, generator, water pump, gearing, control panel and gold sluice box. The mobile trommel screen is an optimized removable platform for gold recovery, applicable to small or medium scale of placer gold ore processing that need mobile operation.

Potable gold mining trommel wash plant are mainly used for gold dust recovery. I t is composed by feeder hopper, scrubbing canister, nonaxle trommel, chute, shaking chute, centrifugal machine, etc. T he mobile trommel screen is a optimized removable platform for gold recovery, applicable to small or medium scale of placer gold ore processing ...

T8 Portable Gold Trommel. Our portable T8 gold trommel wash plant is designed specifically for gold recovery operations. We rate the T8 at up to 300 tons per hour, or 200 cubic yards. Results will vary depending on material conditions. Its design allows for portability and fast setup, with a 300 horse power hydraulic drive system.

Jan 11, 2021 Sinolinking Gold Mining Wash Plant Trommel Machinery Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore ...

Keda 20tons Mini Trommel Screen Mini Wash Plant For Gold , Find Complete Details about Keda 20tons Mini Trommel Screen Mini Wash Plant For Gold,Gold Trommel,Gold Mining Equipment,Gold Washing Machine from Mineral Separator Supplier or Manufacturer-Qingzhou Keda Environment Protection Machinery Co., Ltd

Jan 23, 2021 gigapromo.com has been visited by 1M+ users in the past month Find the lowest price for Trommel screening today! Now on sale! Compare Simply Compare Online Large Selection The Best Price Services: Compare, Search, Find Products, Many Offers Cheap-Sale-Discount-Popular-Apple iPhone-Clever Cutter-Call of Duty Modern Warfare-Trending.algo a,.algo a b,.algo .cite,.algo .cite

24 in Portable Gold Wash Plant 24 in. Dia. Gold Wash Trommel Plant 36 in. Wide x 8 ft. Lonf Vibrating Feeder With 36 in. Grizzly Section Air Suspension Bags and Vibco S ID: 143075 Quote + Gold Wash Plant Gold Wash Plant. Please contact us for more information. ID: 142841 Quote + GMS 1000 Gold Wash Plant GMS Gold Wash Plant. Model: 1000.

Aug 09, 2018 Vibrating screens may be strongly preferred by the aggregate industry whereas trommels are preferred for placer mining because of their ability to break up and wash gold-bearing gravel, thereby ...

Features of 20tons mini trommel screen mini wash plant for gold 1) The SLK-MGT series gold washing plant are designed according to your specific mining conditions and requirements. 2) Feeding system with grizzly hopper feeder, water spray pipes inside the hopper for spray waters to the soils.

Aug 14, 2020 Due to the different screening methods of vibrating screen and trommel screen, the materials they are good at screening are also different: In the case of a lot of rocks and large rocks, the material with greater viscosity will be more effective because the vibrating screen is vibrating.

Alluvial Small Scale Portable Mobile Mini Gold Trommel Wash Plant Product Application Placer Gold Washing Plant is a kind of combined gold mining machine , designed especially for placer gold mine which is contained in the raw material, includes sieving, separating through trammel, sluice and extraction gold

Oct 18, 2019 Materials are evenly transferred to a trommel screen by vibrating feeder, sieved sand have coarse size, fine size, and waste. The qualified fine materials are conveyed into an air classifier for gold concentrating, and the gold-containing fine material is left inside the air classifier, and the gold-free waste is discharged.

Dewo machinery can provides complete set of crushing and screening line, including Hydraulic Cone Crusher, Jaw Crusher, Impact Crusher, Vertical Shaft Impact Crusher (Sand Making Machine), fixed and movable rock crushing line, but also provides turnkey project for cement production line, ore beneficiation production line and drying production line.

vibrating screens for mining & minerals | general kinematics

vibrating screens for mining & minerals | general kinematics

Vibratory screeners are becoming more widely used across various industries because they allow for strict size-control and efficient separation in material sorting. General Kinematics DS and VS direct drive screens offer versatility and high-performance screening in a small, value engineered package. Screens are available in a single motor design for elliptical motion or a dual motor design for linear screening and can work with either a horizontal or incline set-up. Each vibration method ensures the particles passing along the screen, if small enough, will have the opportunity to fall through the screen mesh between the start and end of the deck. Each style comes in standard sizes, but can be customized with different deck systems, including wire mesh, steel, rod decks or polyurethane panels.

Screen capacity and longevity can depend on screen use, cleanliness, and the aggregate being screened. General Kinematics vibrating screens solve these concerns with a large variety of sizes, ensuring you find the perfect fit and capacity for your needs. General Kinematics screens are also equipped with simple construction and only essential moving parts, making them a cost-effective, low-maintenance solution.

classifieds | icmj prospecting & mining journal

classifieds | icmj prospecting & mining journal

NORTH CENTRAL WASHINGTON placer and lode opportunity. Historic mining area, some virgin ground. Proven reserves. Geological report, but no 43-101. Geologist estimates based on owners seismic testing and bore hole drilling that Billion Dollar reserves are present. Not operational. 785 total acres. 641 placer BLM, 20 lode BLM, 124 private patented. Mild climate, year-round mining opportunity. Report and data and photos available on signing of NCND. Call KIT CAVE (208)315-2255.

Near Ft. Irwin, California. Water is better than gold. 3 artesian, free flowing wells, electricity for mill site, subdivided permanent buildings are permitted. Titles and deeds clear. Call Desert Rat of 60 years. (760)267-0285. $800,000 CASH.

50+ acres private land plus 10 acres BLM lease, fully operational. Easy access. Fully permitted. Very good reserves indicated. 43-101 available, additional data available on signing a NCND. Call KIT CAVE, Consultant, (208)315-2255.

80-year-old 2nd growth timber. USFS on all sides. Live water on property (stream and spring.) Two patented lode claims, closed since 1930. 5 adits range in depth to 1,100 ft., assays, reliable data, 100,000 tons of ore on pad sites. Recent testing shows Rare Earth. Historic mining area. Data available on signing NDA. No 43-101. KIT CAVE, Northwest Territories, (208)315-2255.

(2) Twenty-acre claimsExtensive testing with actual extraction and recovery of gold. This mine has been owned for 20 years by one owner. Assays from 0.12 up to 1.0 OPT. Terms possible. Tel. (619)609-0234, or send email. Complete report available.

Yukon Territory. All under water license, 83 claims water license till 2028, 57 claims water license till 2030, reports and history, Geologist reports, roads to properties, approximately $1 million worth of equipment and infrastructure. $6.5 Million (USD) must be cashed out. Email contact information including phone number.

FOR SALETwo 20-acre placer BLM mining claims in Baker County, Oregon. Located in an established placer gold district. Established reserves at a very conservative 22,000 cubic yards at a grade of 0.58 grams (0.0186 ounces per ton). Reserves can likely be doubled by additional testing. Claims include a current Notice of Intent for sampling and bulk sampling. Excellent year-round access from maintained county road adjacent to the property. Normal operating season is April to October and often longer. Perennial stream Clarks Creek flows through the Lone Pine Claim. Mining geologist report available. $300,000. Send inquiries by email.

in prolific Getchell trend in Humboldt County, Nevada adjoins Nevada Gold Mines LLC (Barrick Gold) property. Past producer has sat idle long enough. Looking for a company that has the $ and know how to git er done and into production. Patented claims with much data available. Please reply with contact information for further data by email.

MINE 1 has 71 gold lode veins, 3 gold ore bodies, per nuclear magnetic resonance (NMR), on 265 acres. Good road access. MINE 2 has 65 gold lode veins, 1 gold ore body per NMR, on 105 acres. 200 TPD Mill equipment is included. Good road access. Mines are approximately 15 miles apart. Owner has a lot of the original mining engineer reports, maps, assays, and blocked ore. One of the best ways to own gold is to buy a significant gold mine or two ahead of potential hyperinflation!

21 Gold Placer Claims in Whitehorse Mining Division Camp and some Equipment 5 yr. Placer & Water Licenses until 2025 Land Use Permit Approval for moving equipment Geologists Report upon request

Historic steel head frame on patented land, shaft down 1,300 ft. at Tybo, Nevada. Shaft refurbished and in use by Alta Gold until 2000. Power available. Mine dump sampled by Nevada Bureau of Mines showed 29 oz. per ton silver. Sale includes adjoining 20 acre BLM mineral claim. $69,000. Owner financing. (775)901-8788 or send email.

BEST IN THE WEST! WORLD CLASS GOLD PROPERTIES! EQUITY JOINT VENTURES AVAILABLE! RICHEST PLACER & LODE ORES, CUSTOM MILLING FACILITIES. $ 8.5M+ CASH REQUIRED/P.O.F./NCND/EST. 10X INV. CAP./3-5 YRS. LIBERTY CREEK GOLD GROUP PH. (480)604-7913 OR SEND EMAIL.

Approx 2.5 million tons in Cariboo, B.C. This property is offered for mining purposes only. Title to it does not include ownership of the surface rights to use for residential or recreational purposes. Send email.

Arizona-based precious metal consultants furnishing projects for the ownership and development of quality mining and milling opportunities. Benefits include asset appreciation, cash flow from operations, and various tax benefits. We target properties that provide excellent growth potential while minimizing exposure to risk. Call (424)212-3256 or send emailto learn more.

11 ALASKA STATE 40-ACRE MINING Claims. Within 20 miles of Tok. No written production or drill data. History of mining operation including grandfathered cabin from 1984 Mining Operation permit. $45,000 OBO. Contact ZACK. (907)322-2903.

60-ACRE PLACER GOLD CLAIM IN Alleghany, CA. Located on Tertiary river deposit in the heart of the richest mining district in the State. The claim has mostly sat idle for decades and will take work to get started again, but there is great opportunity. Potential for lode discoveries as well. $37,500, willing to offer owner financing. Contact by email:

20+ ACRE, 1893 PATENTED PLACER property for sale $1.5M (subject to gold price changes), JV or possible owner finance with half down. Big bright gold. Siskiyou County, South fork of Salmon River, own both sides of river. Strong riparian rights, spring fed tailing ponds. 60x50 metal shop, 3b/2ba manufactured home. Excavator, trommel, generators, pumps, equipment, solar power phone DSL and 800x75 runway. Call or email for pictures and details. (415)971-9222; or send email.

BRAND NEW HARD ROCK MINING equipment available for immediate order, from Mt. Baker Mining and Metals. We are a USA manufacturer located in Bellingham, WA. Call us today at (360)595-4445 for more information.

3x6 Ball Mill (1TPH), complete with drive, 20hp motor, balls, frame -- $37,000 1 Ton/hr Turn-key Ore Processor, ready-to-run -- $99,500 6x10 Jaw Crusher (1-3TPH), 7.5hp 3-phase -- $8,600 10x16 Jaw Crusher (5-20TPH), 20hp 3-phase -- $16,700 Mini Mobile Gold Processor 1 Ton/hr, Honda 22hp gas -- $16,000 16x12 Hammer Mill (1TPH), 15hp, 3-phase -- $12,325 24x16 Hammer Mill (2TPH), 30hp, 3-phase -- $22,900 4x8 Shaker Table (1TPH), single phase -- $14,900

2x4 w/ 1/2 ton extra balls. In barely used condition Used briefly for gold mine research & design at the shop only, never seen production work at the mine Portable, trailer-mounted. Comes with: 15x30 long stacking conveyor 6x10 Hopper & stand frame mounted Stationary single-deck grizzly screen Lots of pictures. All the info about everything from specs to production to what uses from an expert engineer, call for details, inspection, close up pictures, shipping etc.

B-70 and B-701 Mc Englevan (MIFCO) metal melting pot furnaces with high pressure blowers. -- $9,500, each Exhaust and pouring system for B-70 MIFCO furnace consists of a 5X9 hood and 20-foot-tall chimney with 1hp fan, trolly with cantilever crucible extractor, crucible tongs and pouring table. -- $10,000 Bullion molds for silver, 50 to 500 ounce plus conical mold to separate metal and slag. -- $5,000 Chemical fume hood on stand, 4-foot-wide, with 3/16 thick safety glass front sash and exhaust fan. Excellent conditionno rust, Alberine stone working surface. We have 2. -- $2,500 each Chemical Scrubber for hood, 1,000 CFM with 50-gallon sump, circulating pump and exhaust fan. -- $2,000 Thum cell electrolytic silver refining system: 500+ ounce per day with power supply and cables. Shown in October 2018 ICMJ. Comes with electrolyte silver dissolver, crystal cleaning station, silver crystal drying oven. We have enough spare parts to make 3 cells. -- $25,000 each Olympus binocular stereo microscope Model SF-20, 30X magnification with fluorescent ring light. -- $195. OMYNO binocular boom microscope on 11-inch pole, 10-65x magnification with wide field eyepieces. Excellent for looking at large specimens. -- $395 Fiber optic illuminator for microscope -- $125 Micro sample splitter with pans, excellent for splitting gold placer. 2 each in stock. -- $95 each Laboratory Scale, Mettler AE160, capacity 75 grams, accuracy, 1/10 mg, reads 4 places to right of decimal. Professionally calibrated in May 2021. -- $1,500 Chain-o-matic Ainsworth double pan balance with set of weights. -- $1,200 12x12x12 lab drying oven. -- $500 Sweco, 4- foot diameter 3-deck sieve with 6 spare sieve. -- s$9,500 Lightnin mixers, air operated with 4 shafts and 3diameter props. -- $1,000 each

EQUIPMENT IN GOOD WORKING condition: Knelson MD30 Concentrator$18,000. 24 ga Gardner Denver mucker$6,000. (2) 24 ga 1-1/2 ton rocker dump and 1 end dump mine cars$2,000 ea. Stutenroth impact mill w/50 HP motor$6,000. GD 63 Jackleg drill$1,500. (970)560-0685 or send email.

25mm OD core drill comes with backpack, Shaw gas-powered engine drill, coupling, diamond drill bit, loose materials bit, core cutter, 2 compression tanks, core breaker, knockout rod, barrel adapter, T-handle, aluminum gas can and 20 feet of drill steel. Excellent condition. Asking $2,800, includes delivery in the USA. UNION GULF RESOURCES, CORP. Send email or call (619)609-0234.

FOR SALE15 TON GIBSON ROD MILL, w/roll. Mint. Jaw, conveyor, feeder, classifier (2) table. Send $8. 14 pages, pictures, W.W. Gibson instructions. OREGON MINE SERVICE, PO Box 205, Sumpter, OR 97877. $15,000 Firm.

RETIRING. SELLING PROVEN, successful 11-year-old business designing, building and selling Trademarked gold and precious metals refining kilns. Countless untapped markets, huge potential for expansion. Go global, take this to the next level. www.goldkilnsusa.com for product videos. (928)634-3455.

Owner selling due to health condition. Located east of Grass Valley by town of Washington, CA. $3,600 OBO. Make offer. Contact SAM BALDWIN, Harrington & Baldwin Mining Equipment Supply,470 E Main St. Grass Valley, CA 95945.

Offering 100 acres of remote Arizona desertuntouched dry river creeks & benches filled with tiny gold nuggets. There is literally gold to be found anywhere the shovel dropspossibly the best placer gold mining in the entire area. The purchase price of $965,000 includes loader backhoe, high quality Goldfield brand vibrating hopper/grizzly/trommel, dump truck, water pumps, generators, etc. If interested, call LAURA or STEVE at: (480)296-3773.

Buy these (46) forty-acre Alaska State Mining Claims northwest of Fairbanks. 1,840 acres total with only 10 acres mined. There is road access and plenty of water. All equipment and trommel included plus cabins. Geologist report reflects material ran $10.50 per yd. in 1983 at $350 an ounce. Permits are in place. Price reduced, for sale or lease $4 million. (970)629-8637.

One that you do not want to sell that should be operating and in production or a mine that you need help to operate. I have 34 years of mining experience. Please contact me by emailif this is of interest.

ORO INDUSTRIES TROMMEL and Centrifuge. Trommel is 24 diameter by 20 long, 10HP electric drive with Browning gearbox. 25 - 30 YPH. Centrifuge is 20 diameter with 3HP electric motor with 15 YPH production rate. Call (307)922-4754, MATT.

DENVER 5x4 SRL PUMP, 25 HP; Galigher 2 rubber-lined sump pump; 48 Sweco screen; Denver #12 drives/ 48 Dorr Oliver thickener mechanism; (2) 100 amp SS shut off boxes. MILLER EQUIPMENT, Tel: (865)475-7977, or send email.

Located SE of Fairbanks. 16 (40-acre) state placer mining claims. Includes heavy equipment in excellent condition, 4 Conex boxes full of tools, Cat parts and gold cleaning equipment. CRAIG (608)343-9973.

Consists of the Eureka & Donaldson Placer claims, located in eastern Oregon. Approx. 30 patented acres. Cracker Creek runs through entire length of property. Estimated 1.3 mil yards of pay available to be mined. Owners selling the full operation (land and equipment). Price & terms negotiable. Contact RUSS (701)580-1554. Serious inquiries only please.

A hydraulic operation from 1882-1912, using antiquated methods recovered 3 million yards at .01 from a 3-mile section of a Tertiary river channel. 44 million yards remain in main channel plus 40-50 million potential in side channels and redisposition deposits. A large basic dike intersects the gold channel and forms its base for a mile. It contains strategic metals and rare earths, plus enough scandium to make it valuable.

Cleveland and Cleveland Extension mining claims in Inyo County, California. Adits to 800 length. 10 -12 principal veins in granite and quartz monzonite. Accessed mines in 2wd dually last month, but 4wd recommended. Thousands of tons of tailings to reprocess. Huge potential for persons with hard rock experience. Im only selling because Im permitting a placer operation in Nevada and cant split my focus. For more info, go to: mindat.org Go to California/ Inyo County/ Owens Valley/ Fish springs (Tinemaha mining district) click on Cleveland Mine. Asking $35,000 or consider offer, trade for 4x4 4-door pickup, small mining equipment, small excavator, tractor/ loader etc. Also have lode claim in San Bernardino Co. for $5,000 and many placer claims in Imlay, Nevada, Barber Canyon, Rock Hill area. For maps, pics and info call (814)688-4965.

CHASE, ALASKA802 ACRES OF patented placer claims and 80-acre lot with airstrip. Future potential wildlife wilderness eco development reserve. Ample water. Permits required. No royalties. $1,200,000 Send email or call(907)562-3382. Call, Text, Zoom.

With recent dramatic increases in gold prices, there is no better time for accredited U.S. investors to move investment capital into Alaskan precious metals and gemstone mining projects as a hedge against U.S. and global financial market uncertainties. Seeking U.S. buyers, investors or large-scale miners for our lode, placer and open pit gold, copper and gemstone mining projects in Alaska. For complete information contact: ANN ELLIS, (907)521-6480, [email protected] or TED STINSON, (907)382-1751 [email protected]

Approximately 360 acres of Placer mining claims (2-160 acre claims) for sale just a few miles from Goldfield, Nevada. Average value from many assays over the past 15 years is +.12 ounce gold per ton, also tellurides on the property. Asking $250,000 terms available or trade for Fee Simple property, equipment, motorhome, ore concentrates, etc. Reply by email for information and location. UNION GULF RESOURCES, CORP. (619)609-0234.

FOR SALE: 3 Contiguous Patented Placer Gold Claims (59.92 acres)$700,000. Equipment sold separately. A few miles south of Lake Almanor, CA. Feather River runs through the middle of the property. Owner will consider 2-year MINING LEASE OR TRADE for property in Washington, Oregon or So. California.

(3) 40-Acre state placer claims in the Upper Cache Creek Basin. Good access. Active mining adjacent. Good water. Easy to permit. High potential placer site for very reasonable. $24,000 for all. Call/txt (208)304-7483.

CLAIMS FOR SALEFour contiguous gold placer claims in Historic Ophir Gulch, Greaterville, AZ. Total of 120 acres within Coronado National Forest on east flank of Santa Rita Mountains, 45 miles south of Tucson, AZ. Excellent access, camping and ATV trails. LUMP SUM. $12,000. DAVE TAYLOR (314)808-5858.

Powered by JCB200 Excavator with 400 Link Belt Undercarriage. 100YPH Gold Watch Project washplant. 5 cylinder Duetz water pump. 24x8 container included with extra parts & supplies. Setup to work on land or ocean. Located in Nome, AK. Ready to work. Pictures available. $139,000 $79,000. Call ARNE BELSBY, send email or call(509)979-8265.

PERFECT FOR MINING CAMPSNew Remote Septic Systems. A 40- and an 80-person per day septic system. Coast Guard approved. One works on ultraviolet light, one on chlorine. $90,000 new; now $12,000 each. (907)235-8975.

Closely held property ownership. Proven mineral reserves. Onsite plant commissioned/operational. Seeking lessor/developer/operator to assume immediate hands-on site operation. Investment and/or sweat equity ownership stake available. Contact by email or call(408)313-1595.

230 Acres on Solomon River, 35 miles from Nome, which have been entirely dredged upstream. These claims begin where dredging stopped. $485,000. 20 to 25 ft. deep. Abuts the Nome-to-Council Road at Mile Post 35. Mining engineers report states possibility of 20,000 to 40,000 oz. of gold. A 4 diameter diesel-powered trommel is available for $20,000. (907)235-8975.

EQUIP. SETUP FOR REMOTE MINE-MOUTH, NO POWER, OPS. Complete Assembly consisting of: M35A2 multi-fuel Army truck w/ mounted 10x16 rebuilt Austin-Western crusher (driven by new 50 HP Kohler gas motor). Crusher discharges to new vibratory overs/unders classifier. Unders supplies used Kamflex elevator discharging to new Stutenroth 2 tph impact mill w/ new 18 hp clutched Honda gas motor. Mill discharges to new vibratory variable speed classifier. All equip. has approx. 12 hrs. use. $34,000 OBO. If not sold by 10/31/21, equipment will be parted out & sold separately. (208)521-3649, leave a message or send email.

40-YEAR EXPERIENCED MINING Consultant for hireProperty evaluation, permitting, safety and environmental regulations, blasting, narrow vein underground mining and processing. Have Niton XL5 XRF for field and lab analysis of 52 elements. Willing to travel. CRAIG LIUKKO (970)560-0685 or send email.

WE ARE LOOKING FOR TAILINGS, PRECIOUS METAL ORES & TOLL RUN to Process in our Nevada Facility In-House LaboratoryAA, ICP, XRF & Fire Assays Do you know anyone who could use our Help or needs Funding or a Joint Venture Partner? Call Today (302)381-2772.

PRECIOUS METALS TESTING and 30+ elements tested by ICP-MS, the most sensitive technique. ISO/IEC 17025:2017 laboratory accredited. Microwave digestion method. LONE PINE ANALYTICAL, Phoenix, AZ. Dr. David Luttrull, (480)797-3353; or send email.

With recent dramatic increases in gold prices there is no better time for accredited U.S. Investors to move investment capital into proven large-scale Alaskan precious metals mining projects as a hedge against US and global financial market uncertainties. Seeking U.S. buyers, investors or large scale miners for our lode, placer and open pit gold and copper mining projects in Alaska. For complete information contact: ANN ELLIS, (907)521-6480, [email protected] or PAUL TORGERSON, [email protected]

COMPLETE PLACER PLANT OPERATION in Arizona. Buy Any or All. Very Low Hours: Rock Systems feeder/hopper/grizzly/conveyer$30,000. Goldlands 50 YPH trommel$35,000. 6 Pump$5,000. Yukon Sluice$3,000. Goldlands sizing separator$9,000. MSI Water Clarification Unit$175,000. MSI Exit Conveyor $7,000. U-Tech Finishing Table$1,900. 4 Honda Pumps$4,000 ea. Power Panel$10,000. 75KW Generator$22,000. Cargo Trailer with tools etc.$8,000. Goldlands Spiral Separator$2,500. Much more: tools, generators, water tank, diesel tank, welding etc. Send email.

WHAT WILL YOU DISCOVER? Gold Mining & Rock Hounding 365 days a year in Arizona Good Access Gold Mining Claims for sale an hour from Phoenix and Prescott in the Weaver Mountains near Wickenburg, Congress, Stanton, and Yarnell. From casual prospecting up to commercial mining operations. Credit Cards Accepted. Call (928)HAS-GOLD (928)427-4653 www.ArizonaMiningClaims.com

With recent dramatic increases in gold prices there is no better time for accredited U.S. Investors to move investment capital into proven large-scale Alaskan precious metals mining projects as a hedge against US and global financial market uncertainties. Seeking U.S. buyers/investors for our Kahiltna Placer Gold Mine Project southwest of Talkeetna, Alaska. The resource is estimated at up to 174,000 ounces gold in 6 million cubic yards. Production cost is estimated at $485 per troy ounce of gold. Dividend distributions can be paid in cash or gold. Contact: ANN ELLIS (907)521-6480, [email protected] or TED STINSON (907)382-1710, [email protected]

Southwestern OR$400,000. 3/4 sq. mi.(475 acres) under Placer Claim. 20 acres under Lode Claim. 6 major en echelon quartz fissures. Excellent production history. 3 established lode mines with free-milling ore (that weve located). Some ore out of 2nd level mine over 100 OPT in some bodies. One known pocket extraction in order of 90 lbs. in 1905. 1/4 mi. of premier mining creek access. 1,200 sq. ft. (approx.) house with open well. 3-level mill building w/ore hopper. Closed circuit pilot mill4 tons per day. Electric line power onto property. Claim in moderate, mixed conifer timber. 1/4 mile from paved road. 12 miles from services on paved highway. Contact: BILL by email.

https://www.icmj.com/magazine/article/mud-creek-placer-mine-adventure-1614/ A WORLD-CLASS POTENTIAL PLACER GOLD DEPOSIT backed by authentic, verifiable, geological reports showing 73,000 PROVEN, mineable ounces of gold reserves and with the POTENTIAL reserves evaluated at 2.8 MILLION OUNCES of recoverable gold in the over 2,000-acre AK state claim block, located 140 air miles NE of Nome, at Candle, AK. Offering significant ROI for seed capital, lease, with advance on royalties, joint venture or outright sale. $3,285,000. Principles only please. Send email.

For SaleGold Property Eastern San Bernardino County, Calif. 4 Patented and 37 unpatented claims. Significant indicated gold resource with additional potential. Contact: MR. RICHARD VOIT For details go to: www.TheAmericaMine.com

FOR SALE: 4x3 Denver SRL pump, 7.5 HP; 5x4 Denver SRL pump, 25 HP; 2 Galigher rubber-lined pump 5HP; 48 Sweco SD screen, Denver #12 drives, 48 Dorr Oliver thickener mechanism; (2) 100 amp SS shut off boxes. MILLER EQUIPMENT, Tel: (865)475-7977or send email.

185 miles from Fairbanks. Price option without equipment$125K. Also available: D-7G Cat Dozer, Insley 1000 Excavator. Variable price options on the equipment. For more information, contact ROB GOREHAM (49er Mining Supplies) at (209)588-1635 or send email.

RADIANT EXPLORATION, INC. Mineral Exploration Mapping Services Remote Exploration via Nuclear Magnetic Resonance (NMR) and Satellite Imagery Detection Capabilities for the Location and Depth of any Precious or Base Metal Lode and Placer Experience FastAccurateVery Affordable Small Surveys Welcomed Contact: MONTY GEORGE (303)905-1680 or send email. www.radiantexploration.com

+40 years of domestic/international experience. Exploration > Evaluation > Permitting > Mining > Recovery > Sales. Hard rock or placer. Extensive references list. Reasonable rates. Dont mine w/out consulting a professional. Call Charles Watson (530)258-4228. Helping you make better decisions.

I am an experienced Arizona prospector who is retired and would like to help and teach new miners. I will help you find, stake and file your own claim. I know where there is open BLM ground that is good for placer and lode mining. I will take you into the mountains to test and help you file a claim. I can use my equipment or yours. In Arizona, you dredge differently because of less water. Why buy an existing claim at inflated prices when I can help you find your own unclaimed land that is just as good or better for a fraction of the cost. I can also teach you how to do research work and testing so you dont get scammed by unscrupulous claim sellers. Please call DENNIS (602)565-6561 or send email.

NOME 10-inch suction dredge Dola Mae 50-foot catamaran, (2) new 115 HP Yamaha 4-stroke engs. 5.9 Cummins diesel, 6X8 Berkeley water pump, new 6212 Garmin GPS. 16-wheel trailer. Sleeping quarters. $155K Send email or call WES (928)710-8404.

ORE ANALYSIS X-Ray Spectrometer & Fire Assays Fast Service, Prices Include Sample Preparation Free Price List or see our website at: http://www.reedlab.altervista.org/ Reed Laboratories, 3355 Lincoln St., Carlsbad, CA 92008

Koyukuk Mining District with grandfather rights. Access by road, airstrip, winter trail. Proven placer ground. Fines to large nuggets. Health issues encourage retirement. Serious offers will be considered. (907)388-6769,

TCB International LLC is currently accepting new customers for the processing of precious metals through leaching of concentrates and head ore. Located in Phoenix, AZ. For more information visit us at: www.tcbinter.com or contact us via email.

WANTED: WET DRUM MAGNETIC SEPARATORS in operating condition with feed tanksCASH BUYER FOR SALE: Deister 999 triple table in 40 trailer with sand screw & controls, very good condition for sale. LARRY (602)377-3774 Call or send email.

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