Double-roll crusher can be divided into high speed and low speed double-roll crusher according to the revolving speed of roller; According to the installation methods of roller, it can be divided into two kinds: a roller bearing is active, and the other bearings is fixed and two roller bearings are active; According to the speed ratio of two roller, it can be divided into constant velocity and differential double roll crusher, etc. Roll crusher has many design parameters, while improper choosing and use will influence the production efficiency and effect.
Tile enterprises use mostly the fixed smooth differential double roll crusher whose one of rollers is more active, and the other is fixed. The characteristics of this kind of roll crusher is two rollers of the same diameter, rotational speed, moveable roller higher than the fixed one. Two roller rotation uses the differential rotational speed, which can make the material by grinding, shearing effect, effectively destroy material natural structure and improve the effect of material crushing.
Motor brings movement and power to the fixed roller through a triangle belt transmission and gear drive, and the fixed roller brings movement and power to the moveable roller by roller gear drive, which makes the two roller are counter-rotating. Material is feeding from the feeding mouth above. Through two opposite rotating grinding roller, with the aid of friction and gravity, the material will be bit into the crushing chamber, and make its squeeze and grind and broken. And finally material is discharged from the discharging port. The spring is safety device. When material with large pieces of debris or hard stuff can't be crush into the crushing cavity, the roller stress increases, and the moveable roller can move to the left and compress the spring through moveable bearing block. After discharging the objects, the roller can go back to its original position by means of the spring force. The size of the broken material particle is determined by the gap between the two roller surface, which can be appropriately adjusted. For the normal work of the roll crusher, we install the scraper device on each roller ring (in the case of two bare roller). Under the action of mechanical compaction force, Scraping clay plates tightly attach to the roll ring surface, which can clean the raw material in the roller ring surface.
The roller crusher is suitable for metallurgy, building materials,refractory materials and other industrial sectors broken, higher hardness of the material. The series of roll crusher is mainly composed of the roller, the roller support bearings, compaction and adjusting device and driving unit and other parts. The adjustment of the discharging granularity: with a wedge or gasket between the two roller adjusting device, adjusting bolt, wedge at the top of the device when the adjusting bolt will wedge pulled up, wedge rolling activity to the top from the fixed wheel.
The working principle: The roll crusher will be broken material feeding the mouth fall between two rollers, extrusion, finished product material nature. When the weather is good or not broken, the roll crusher roller but by hydraulic cylinder or the role of the spring automatic, make the roll gap
increases, quality or broken down, so as to protect the machine from being damaged. Relative rotation of the two roll gap to a certain extent, change the gap, can maximum discharging granularity control products. Double roll crusher is the use of a pair of opposite rotating round roll, four roll crusher is to use two opposite rotating round roll crushing operations.
Used field The roll crusher (to roll crusher) applies to the cement, chemical, electric power, mining, metallurgy, building materials, refractory materials, coal and other industries of thick, brittle block material intermediate crushing, it into the grain-size, discharging granularity is adjustable, can fight pressure strength of 160 mpa or less materials
are broken. Especially in the coal industry, the use of native raw coal fragmentation, as long as after iron, removing impurity, without gangue removal, can be directly to broken, broken out of material, granularity and the crushing rate is low, thereby simplifying the coal preparationprocess, reduce the investment and production cost. Matters you should attention 1) You should enhance the work to iron ore. The broken content (qian primary content) fall into can damage between double roller crusher, as a result causes accident. So in front of the breaker shall be installed in addition to iron plant. 2) Viscous material easy to jam broken space, in the treatment of the jam fault should stop processing, not in the running for tong mine. 3) When dealing with material are too many contain large, attentionshould be paid to large ore is easy to from the crushing space to prevent injury or damage to the equipment. 4) After double roll crusher run a long time, due to the roll surface wear larger, cause fairly granular product, then pay attention to adjusting the row ore mouth or on equipment maintenance. 5) You also need enhance the inspection of the roll crusher equipment,the lubrication part of the equipment on time to go, keep equipment good lubrication condition.
Applied materials: coal, pebble, limestone, dolomite, granite, construction waste, pebbles, glass, cement clinker, basalt, iron ore, quartz stone, coal gangue, etc. Its advantages: high capacity, ability to handle wet, sticky feeds.
Roll crusher, as one of the most economical and practical crushers, is designed to handle the first and second crushing of friable minerals and stones such as coal, clay, coal gangue, limestone, slag, cement clinkers, and shale, etc.
According to the number of rollers, the FTM roll crushers can be divided into three types: single roll crusher, double-roll crusher, and multi-roll crusher. And the most common one is double-roll crusher.
Roll crusher is applied more widely than other crushers because of its small volume and cheap price. With the adjustable discharging system, it can be used flexibly in coarse and fine crushing processes of the industries such as cement, chemical engineering, electricity, mining, metallurgy, building materials, and others.
Roll crushers can adjust the wedge device between rollers to control the feed and discharge size of the machine. Also, it is equipped with a spring device to protect the crushing machine and avoid shutdown caused by overload and iron passing.
When the adjustable bolt pulls the wedge upward, the wedge pushes the movable roller away from the fixed wheel, then the gap between the two rollers becomes larger, and the discharge port becomes larger, and vice versa.
The gasket device adjusts the size of the discharge by increasing or decreasing the thickness of the gasket. When the gasket is added, the gap between the two rollers becomes larger, and vice versa.
The unique structure of rollers makes selective crushing of the roll crushing equipment. Since minerals fed are crushed along its internal friable crack, the finished products are uniform with the cube shape.
The minerals are crushed under the force of rollers and machine body, and ores smaller than the gap between roller and machine frame (of single roll crusher) or roller (of multi-roll crusher) will pass directly without repeated crushing.
With the supporting CPU, operators can control roll crushing machines and monitor gaps between rollers, and clean up the crushing cavity through the central control room, which will help save energy of 30% to 50%.
The main working parts of the roller crusher is the cylindrical rollers. The rollers are supported by the fixed and movable bearings, and they are relatively rotating which are driven by the motor. The materials are crushed by the friction of the rotating rollers, and the finished products are discharged from the gap of the rollers.
The spring is used to balance the pressure generated between the rolls. If there are non-crushed materials falling between the two rollers, the compression spring of bearings can be pushed to make a large gap so that non-crushed materials can be discharged immediately.
The quality of the crushers has a great impact on its price. The high-quality equipment will cost more in terms of workmanship, technology, materials, etc. Meanwhile, it will have a long service life, low failure rate, and better performance, and bring more profit to investors.
In 2019, Fote has exported a total of 39 roll crushers to India, Indonesia, Zimbabwe, Vietnam, South Africa, the United States, Pakistan, the Philippines and other countries, mainly for coal, bentonite, rare earth ore, limestone, aluminum, manganese and others.
Exports of mining machinery have been booming in recent years and Fote has already opened markets in Africa, Southeast Asia, etc. Fote Heavy Machinery has supported foreign customers with low-price and high-quality roll crushing equipment, which has been popular among the majority of customers.
In recent years, the Indonesian government has taken actions to improve its infrastructure and promote economic development. As a result, Indonesia's demand for crushers has increased significantly.
The roll crusher produced by Fote has fine finished products and the best effect on sand making for river pebble. Due to its good finished product size, low powder content and low price, it is widely favored by Indonesian customers.
Firstly, Fote Heavy Machinery is a professional manufacturer of roller crushers. In order to improve the company's comprehensive strength, Fote has introduced international first-class production lines on the basis of original techniques.
Secondly, FTM produces various types of crushing equipment that is suitable for crushing, sand making and milling hundreds of minerals, and ensures excellent quality, good performance and low price.
Thirdly, Fote has provided patient and prudential after-sales service and all-round consideration for customers, and actively created high-tech crushing equipment to take the leading position in the international market.
As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.
Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.
...other industries hammer crusher , it is the big Sidongfeidong most people 's feelings . Unlock all the doubts , the following details about the hammer crusher at work when the principle . A wide range of hammer crusher in construction is basically the same , a few large backbone structure is an important case , rotor, hammer , sieve four categories, this seemingly simple structure part in the their work when their duties, they easily reached truly hammer broke purposes. Cabinet, all of this should be the biggest part of the structure , itself, in addition to the higher material structure , it also needs to work when needed to accommodate a large number of broken stones , and can withstand impact, more must be able to accept within the capacity of the hammer strokes, can not strike. So work, it has become the only one , but fully qualified " punching bag ." Rotor , the name suggests it is the principle of rotation and driven . Of course, it is driven by electricity , resulting in a high-speed rotating hammer to drive , and make the material into the box to withstand high-speed impact hammer , decomposition , like the hands of the doctors , like the scalpel , led the doctor's hands slowly slow anatomist those little stones. Can not be denied , the credit for this series is none other than non- rotor . Although the rotor speed there is...
...Clay mining help of crushing equipment, but because of the large clay viscous, high water content, etc. Although a lot of manufacturer production crusher is very professional, but in the viscous material crushing is easy to cause adhesion, congestion. Crusher of the leading enterprises in our country Zhengzhou Great Wall Heavy Industry Machinery Co., Ltd. Production of clay crusher made a new breakthrough in the process of crushing clay. CLAY CRUSHER MACHINE MAIN CHARACTERISTICS 1. The Clay Crusher Machine adopts the work of the new technology of casting hammerhead, with wear-resistant, resistant to impact; 2. Can be adjusted according to customers requirement, Clay Crusher Machine, production you need the product particle size; 3. The Clay Crusher Machine hammer crushing body sealing structure, has solved the crushing plant dust pollution and ash leakage problems in the body; 4. Clay Crusher Machine has the overall design, beautiful shape, compact structure, less wearing parts, convenient maintenance, is the upgrading products. WORKING PRINCIPLE OF CLAY CRUSHER MACHINE Clay Crusher Machine the main working parts of the rotor with a hammer. The rotor is composed of main shaft, disk, pin shaft and hammer. Motor drives the rotor in the crushing cavity...
...stones and natural sand is limited in modern industry and construction,Great Wall Company develops the pebble crusher to make aggregate as building materials, Great Wall stone crushers engineers propose the CZS cone crusher in pebble crushing plant.What are the technical characteristics of CZS cone crusher? CZS cone crusher not only has wide output size range and adjustable crushing cavity gaps, but also great crushing capacity and excellent performance. New type cone crusher is convenient to operate and maintain. When CZS cone crusher works, the motor drives the drive shaft through the pulley and V-belt .The drive shaft and a pair of bevel gear make the eccentric sleeve rotating and this makes the cone axis swing, so sometimes the crushing wall is near the rolling mortar wall, but sometimes they are far away from each other. Stones in the crushing cavity are extruded, impacted, and boned continuously, finally pebble are crushed into needed output size and discharging from CZS cone crusher outlet. CZS cone crusher introduces advanced technology and greatly reduces the production cost,Cone crusher and pebble crusher are widely used in the fields of highway,construction, metallurgy,chemical and mining industries. CZS cone crusher can crush medium and high hardness stones such as granite, basalt,...
...The invention of mobile crusher promote the disposal of stones and speed up the crushing process.With the rapid development of Mining machinery in the world,the demand of stone crusher is very becoming more and more important. If you have more understanding about stone crusher,you will know that stone crusher can be called stone crusher. The common stone crusher types contain jaw crusher,cone crusher and impact crusher. Different kinds of crusher types can meet your different needs. Today,we will talk about mobile crusher maintenace knowledge. If you want to keep your mobile crusher for a long time,it is very necessary for you to learn more knowledge ofmobile crusher maintenance. Mobile crusher is the principle of static pressure. The basket shaking softer the second time. It is easy to install. The size reduction is the high efficiency of bed materials cone crusher. It works stable and saves a lot of time on a large scale.It can be freely laid up-right without supports and has good gridding screen gallery, excellent performance, best mobility and flexibility; meanwhile, it provides excellently selected low cost style and has the features of stable design, light job content, convenient transportation, low feeding height,...
...process. ore beneficiation plant type crusher, the toothed roller crusher is used widely, which is applicable to coal, metallurgy, mining, chemical industry, building materials industries are more suitable for large-scale coal mine and coal preparation plant raw coal (coal gangue) broken. Roll Crusher Tooth roller broken stone machine by a single or multiple motors drive the breaker on both sides of the pulley, turns teeth roll do relative to one another, in accordance with two teeth roll gap materials automatically, greater than two teeth roll material on the tooth roll by combination of broken so as to achieve the required particle size requirements. Toothed roller crusher compared with other types of crusher, big crushing ratio, the crushing material moisture does not have any requirements, and don't stick wall, crushing less, low noise, little vibration, little dust, low energy consumption, convenient cover an area of an area small, simple maintenance. Double roll crusher with the advantages of high efficiency, energy saving, environmental protection to become the first choice of coal-fired power plants to replace imported equipment. And we also have other mining machines, such as stone crusher plant, copper ore processingplant, granite crusher and ore beneficiation plant, hammering machine and so on. If...
...Multi-cylinder Hydraulic Cone Crusher has the following benefits and features. It configures the insurance cylinder, lock cylinder and hydraulic drive hydraulic cylinder - three kinds of insurance agencies. Those not only act as the insurance role, but also cannot disassemble the machine parts to achieve treatment failureThe discharge opening width can automatically adjust, easy operation and high reliabilityThe crushing chamber is designed by grain laminated principle, with the corresponding speed, so as to increase the production ratio and the processing capacity, and can increase levels of finished materials cubeOccurred in iron-passing and in an instant case of stuffy machine, the hydraulic device can automatic adjust the discharge range to reducing the manual cost than the old spring cone crusherAnd easy maintenance, low running costHydraulic adjustment device, thin oil lubrication and labyrinth seals, virtually eliminating the ole type spring cone crusher common failures, such as oil-water mix the laminating crushing theory helps to produce multi-product cubic structure, and significantly reduce the pin sheet materialConcave & mantle uses high-manganese steel, coupled with changes in the crushing chamber and laminate crushing principle, to greatly reduced wearing of machine. General service life is longer than old type spring cone crusher. Henan Hongxing Mining...
...Jaw crusher blockage is common problem in the crushing process of stone production line and sand making production line, one of the most possible reason is caused by improper operation.when we encounter with jaw crusher blockage,how to solve the problem?Great Wall engineers summarize three solutions of jaw crusher blockage for you,which effectively avoids unnecessary mechanical damage and protect the safety of staff in the field. 1:Feeding speed is too fast of vibrating screen, which fails to immediate crushing.jaw crusher should slow down the feeding materials and uniform feeding. 2:Check vibrating screen mesh and jaw crusher wear parts at fixed interval,reduce the maintenace and jaw crusher blockage and prolong jaw crusher service life. 3:When the jaw crusher blockage appears in the outlet,stop the vibrating screen working and turn off jaw crusher power source,then adjust the belt conveyor and restart the jaw crusher. diesel crusher http://www.dieselcrusher.com/crushers/Diesel-Engine-Crusher.html diesel jaw crusher http://www.dieselcrusher.com/crushers/Diesel-Engine-Jaw-Crusher.html diesel hammer crusher http://www.dieselcrusher.com/crushers/Diesel-Engine-Hammer-Crusher.html jaw...
...roller crusher Double Rollers Crusher Usage and Application: The double rollers crusher is widely used for secondary and fine crushing in the industry of mining, building materials, chemical industry, metallurgy and so on. It can crush materials in middle hardness such as rocks, ore, coke, lump coal, slag, mineral slag, cement clinker, fireproof materials, and so on. Features 1.Compact structure, low noise and efficient; 2.Easy to install and only need simple foundation; 3.Can adjust the pressure and size easily. 4.Self-protection, the parts can not be damaged when hard materials such as the metals goes into the crushing cavity; 5.Low cost maintenance and easy to maintain. Working principle The motor drives the fixed roller and movable roller to work via reducer, V-belts or coupling. Materials are put into the space between the two rollers via the feed entrance. As the two rollers inward turning, the input materials are crushed, pressed, ground, and at last come out from the base of the machine. About Us With more than twenty years' history, Zhengzhou Great Wall Heavy Industry Machinery Co.,Ltd. is a manufacture which specialized in R&D, manufacturing and selling big and middle size heavy industry machinery. Since establishment, we make a good image in...
On left is ashowing of the standard gyratory with straight concaves is a section through any vertical, radial plane in the crushing chamber of one of the intermediate sizes of the crusher. In order to understand the crushing action in such a chamber it is helpful to consider the process as though each step took place in an orderly, and ideal fashion. It is hardly necessary to add that the action never does take place in just that fashion; nevertheless the concept is fundamentally a correct one, and the average performance of the crusher follows the pattern so closely that it is possible to predict, within surprisingly close limits; what any particular design of crusher will do.
Letsstart out by visualizing the crushing chamber filled with a tractable material which will act just the way we want it to, with a head of material (choke-feed) above the receiving opening so that no unsurge of load will occur during the closing stroke of the crusher head. Now, consider any horizontal plane through this body of material as, for example, the plane at the receiving opening, represented by line O in the diagram. The crusher head is at the moment in the close-side position.
As the head recedes on its opening stroke, the body of material moves downward; until, at the end of the stroke, the plane has moved to position 1. Note that the length of line 1 from concave to open-side head position, is the same as that of line O from concave to close-side head position. On the next closing stroke line 1 is compressed by the amount of the bead movement at that level, and on the next opening stroke it moves down to position 2 and so on flown through the chamber, until it becomes short enough to pass through the open-side discharge setting.
We can just as readily visualize the process as being the movement of the trapezoidal areas enclosed by each adjacent pair of horizontal lines and the two crushing faces. Better still, we can consider it as the movement of annular volumes whose cross-sections are the areas just mentioned. This latter conception is essential in visualizing the action of non-choking concaves and crushing chambers.
In the diagram, the broken line through the centre of the crushing chamber is the line-of-mean-diameters of the compacted areas. When the profiles of both crushing facts are straight lines, as in the case under consideration, this mean-diameter line is also straight, and its slope depends upon the relative tapers of the head and concaves. When the line approximately parallels the centre-line of the crusher, which is also the case for the diagram we are examining, the theoretical action closely approximates that of the jaw crusher of similar cross-sectional proportions. Practically, however, the gyratory will have some advantage over the jaw, as regards freedom from choking, because the spider arms of the gyratory pre-vent a complete filling of the crushing chamber at the top. When the line slopes away from the crusher centre-line at its lower end the characteristics change quite definitely in favour of the gyratory, as will be seen.
A variable effort is required between the top and bottom of the chamber to crush particles. This may be understood by comparing the mantle and concaves to a nutcracker. Imagine the spider as the nutcrackers fulcrum point, and your hand as applying power similar to that applied by the eccentric at the base of the main-shaft. The closer to the fulcrum point that the nut is initially cracked, the less power you have to apply with your hand. In the same manner the crushing effort, and demand for power, becomes greater as the centre of gravity of the rock mass moves downward in the crusher.
Gyratory Crushers are heavy-duty machines run in open circuit (sometimes in conjunction with scalping screens or grizzlies). They handle dry run-of-mine feed material as large as 1 m. There are two main types of primary crushers-gyratory crushers and jaw crushers. Gyratory crushers are the most common for new operations.
Secondary crushers are lighter-duty and include cone crushers, roll crushers, and impact crushers. Generally, the feed to these machines will be less than 15 cm, and secondary crushing is usually done on dry feed. Cone crushers are similar to gyratory crushers, but differ in that the shorter spindle of the cone is not suspended but is supported from below by a universal bearing. Also, the bowl does not flare as in a gyratory crusher. Cone crushers are generally the preferred type of secondary crusher because of their high reduction ratios and low wear rates. However, impact crushers are used successfully for relatively nonabrasive materials such as coal and limestone. Frequently, size reduction with secondary crushers is accomplished in closed circuit with vibrating screens for size separation.
The gyratory crusher is used as a primary and secondary stage crusher. The cone crusher is used as a secondary, tertiary, and quaternary crusher. The action of a typical gyratory-type crusher is illustrated above. In gyratory crushers the crushing process comprises reduction by compression between two confining faces and a subsequent freeing movement during which the material settles by gravity until it is caught and subjected to further compression and again released. The particles are subjected to maximum breaking forces when they are on the side with the minimum gape.
Gyratory crushers work on a similar principle to jaw crushers but have a circular gap. Rock is compressed between a static conical bowl and a concave mantle which oscillates about the central axis. These are generally designed for primary crushing in large-scale rock crushing applications up to 6000 t/h. Typically a mining haul truck will empty its load into the gyratory crusher and reduce the feed with a top-size of up to a few meters down to below around 250 mm.
Roll crushers, or crushing rolls, or double roller crushers, are still used in some mills, although they have been replaced in most installations by cone crushers. They still have a useful application in handling friable, sticky, frozen, and less abrasive feeds, such as limestone, coal, chalk, gypsum, phosphate, and soft iron ores.
The mode of operation of roll crushers is extremely simple, the standard spring rolls consisting of two horizontal cylinders which revolve towards each other. The set is determined by shims which cause the spring-loaded roll to be held back from the solidly mounted roll.
Smooth-surfaced rolls are usually used for fine crushing, whereas coarse crushing is often performed in rolls having corrugated surfaces, or with stub teeth arranged to present a chequered surface pattern. Sledging or slugger rolls have a series of intermeshing teeth, or slugs, protruding from the roll surfaces. These dig into the rock so that the action is a combination of compression and ripping, and large pieces in relation to the roll diameter can be handled. Their main application is in the coarse crushing of soft or sticky iron ores, friable limestone, coal, etc., rolls of 1 m diameter being used to crush material of top size 400 mm.
Wear on the roll surfaces is very high and they often have a manganese steel roll, which can be replaced when they are worn out. The feed must be spread uniformly over the whole width of the rolls in order to give even wear. One simple method is to use a flat feed belt of the same width as the rolls. Since there is no provision for the swelling of broken ore in the crushing chamber, roll crushers must be starvation fed if they are to be prevented from choking. Although the floating roll should only yield to an uncrushable body, choked crushing causes so much pressure that the springs are continually on the work during crushing, and some oversize escapes. Rolls should therefore be used in closed circuit with screens. Choked crushing also causes interparticle comminution, which leads to the production of material finer than the set of the crusher.
There are two types of roller crusher, smooth roller and tooth roller. Smooth roller crusher crushes materials mainly by extrusion of two rollers, meanwhile also has function of grinding, it is good for medium and fine crushing of medium hardness materials. While tooth crusher crushes material mainly by chopping, also has function of grinding, good for coarse and medium crushing of fragile and soft rocks.
Double roller crusher model is named by roller diameter and length, for example model 2PG0640, 2 means two roller, P stands for crusher, G stands for smooth roller, 06 stands for roller diameter 600mm, 40 stands for roller length 400mm. Similarly, 2PGC500x750, C stands for tooth roller.
Applications:suitable for brittle and soft materials such as coal, iron ore, carbide slag, coal, limestone, diatomaceous earth, etc. Double roller crusher is also called double teeth coal crusher, which is applied in coal mining, metallurgy, building materials, chemic
1.Crushing the materials absolutely with advanced hydraulic control system2.Overload protection device ensuring safe and reliable operation3.High crushing ratio improving the capacity and quality of the final product4.Good performance decreasing the production and maintenance cost
Mainly using the wear-resistant toothed roller, the double roller crusher has a high productivity and breaks the raw material through high-speed rotation. The raw material enters the roller crusher and is crushed thrughly by the rotating rollers. The two rollers force the particles between their surface into the ever smaller gap area, and the particles fracture from the compressive forces presented by the rotating rollers. The internal parts of the double roller crusher are readily accessible. besides, the double roller crusher is relatively easy to install and operate.
1. We can provide a complete set of equipment including crushing, screening, beneficiation, etc. 2. Our products have been exported to market of Southeast Asia, Middle East, Africa and the Americas. Agents have also been developed in Egypt, Pakistan, Vietnam and other countries. 3. We supply with decent quality product, as well as best solution design, professional technical support and excellent after-sales service.
Being similar with the jaw crusher, the double-roller crusher belongs to the crushing of pressing. It has two main shafts controlled by motor separately. There are some structures like roller shell and scale plate fixed on the main shaft. With the working of the two shafts, they work towards right- about and the materials inside will drop from the top input to the middle of the roller shell, being crushed by press and getting out from the lower discharge.
Hydraulic unit is controlled by the hydraulic pressure station by adjusting the distance between the roller shells to make it more convenient to adjust the particle size of the discharge. To ensure that materials can be fully crushed, there are still two reduction box being equipped with the machine to ensure that the speed of the main shaft are in the limitation of controlling.
Concerning of the working principle, its easy for us to know that hydraulic double-roller crusher is more suitable to crush materials with big hardness and less requirements, such as some materials that are hard to be crushed like iron ore and quartzite. If the particle size of the input is controlled justly, the rate of finished products whose particle size is lower than 5mm will be more than 60%.
Toothed roll crusher is widely used in coal, metallurgy, mining, chemical industry, building materials, and other industries, and it is more suitable to crush coal in large coal preparation plant and process waste. Toothed roll crusher has a high crushing capacity. The distance between the rollers can be adjusted by hydraulic pressure. The bearing of the toothed roll crusher is centralization lubrication. Whats more, it has the advantages of optimal design, high efficiency, uniform grain, and low cost.
Protective device: The motor is connected with the retarder through hydraulic coupling to avoid dynamic overload. The sensor overload protection is very reliable. If you have mining project or chemical plant, the toothed roller crusher is prepared for you in China Fote.
The toothed roll crusher is suitable for crushing raw coal in coal mines, coal preparation plants and other industries (allowing less than 30% of coal gangue in raw coal). The crusher is also used to break other brittle materials whose hardness is similar to that of raw coal.
It has the characteristics of high efficiency, long life, full sealing, low noise, and uniform granularity. The double-toothed roll crusher is equipped with a scraper to keep the groove and working surface clean. For the toothed roll crusher, the outlet-size depends on the gap between the two rollers, the size of teeth, shape of teeth, and the number.
The double-toothed roll crusher is relatively small in volume. It consists of two tooth rolls that are mounted in parallel and rotate in opposite directions. According to the crushing capacity and the size of the discharging granularity, the two crushing rolls are uniformly filled with brushing teeth.
And the double-toothed roll crusher adopts the operation way of non-circular, non-intermesh and non-uniform, which can enhance the contact face of roller teeth, and avoid material slippage and improve crushing efficiency.
When the toothed roller rotates, the teeth on the surface of the roller can bite the materials and crush them. Each roller crusher of the crushing system is driven by a separate motor. The roller crusher is generally driven by a belt, and it constitutes the deceleration system along with the reducing mechanism.
FTM double-tooth roller crusher for sand making, limestone, rock, clay crushing has a good crushing effect on wet and sticky materials. And adherence or clogging phenomenon never occurs during the work.
The silicon-aluminum raw material is an indispensable calibration material in the dry cement production process. After the mining work, the materials need to be crushed, transported and stored. and then they are sent to the raw material mill for grinding according to an appropriate ratio.
However, the silico-alumina raw materials have strong water storage capacity and high plasticity index, especially for bauxite and marlstone with water content more than 17% and plasticity index generally above 15. Because of the viscosity of materials, it can lead to blockage and arching during the process of crushing, transportation and storage, thus affecting the normal operation of the system.
In order to solve the problem of adherence and clogging of wet-adhesive materials in the crushing stage, FTM toothed roll crusher is used to break the mixture of limestone and marl. In detail, firstly, the wet and dry materials are mixed and crushed, and secondly, the wet-adhesive materials and other limestone materials with lower moisture content are mixed into the crusher. And finally, they are crushed according to an appropriate ratio.
The toothed roller crusher machine has advantages of small volume, large crushing ratio, low noise, simple structure, convenient maintenance, high productivity, uniform particle size of crushed material, low crushing rate, convenient maintenance, sensitive overload protection, safe and reliable.
Four roller crusher is a kind of secondary crushing, fine grinding equipment. Four roller crusher is suitable for the finely work which compressive strength is less than 300 Mpa, the moisture is less than 30% of the solid material,Such as crushing all kinds of ores, coke, coal, ceramic material, slag, gypsum, salt, clay, chemical etc raw materials or with above fairly hardness type solid materials with the features of low maintenance costs,great breaking ratio, simple structure, reliable performance, little dust, low noise.
Four roller crusher is using high strength wear-resistant alloy rollers relative rotation generates high extrusion pressure to break material; the material firstly enters into the upper two rollers crushing chamber,by extrusion force of the upper rollers relative rotation, after first extruding and grinding (coarse broken);then materials immediately go into the relative rotation of the down two rollers, by using the extrusion pressure to do secondary extruding and grinding (fine broken), at last, the ideal broken particles discharged.
In accordance with the requirements of crushing granularity, the four roller crusher is divided into two kinds of combination models: A type: Upper smooth rollers & down smooth rollers; B type: Upper welded rollers & down smooth rollers.
The upper roller body adopts 45 # carbon steel casting, after heat treatment and roller surface through machining, then adopts wear-resisting material surfacing,The hardness (HRC) of the surfacing after cooling can reach 60-68 degrees,and the thickness of wear-resisting layer is 3-10 mm; Not only the abrasion resistance is good, but also the impact resistance is strong,the services life is about 6000 hours.If the surface of wear-resistant grinded concave,workers can use ordinary welding machine with wear-resistant electrode to do filling-in and reparation, it can be used continuously, do not need to replace the roller.
The down roller body adopts manganese and chromium alloy material, by using multi metal composite casting technology to cast,after heat treatmentand roller surface through machining, the roller is not only with good abrasion resistance and interchangeability, but also the impact resistance is strong,the normal service life is about 6000 hours.If the surface of roller grinded concave, workers can take apart the rollers, by using ordinary machine tool to repair, rollers can continue to use,until the roller wall thickness less than 30 mm, needs to be replaced.
Four roller crusher apply to the super finely work which crush the feed particle size less than 90 mmto the finished product granularity 100 mesh to 5 mm.Such as in mining industry, used four roller crusher to produce quartz powder, refined iron powder; In steel mill, used four roller crusher to manufacture coke powder; In cement plant, used four roller crusher to manufacture coal fines for rotary kiln; In Ceramic industry, used four roller crusher to break feldspar powder; In thermal power plant, used four roller crusher to crush limestone desulfurization; In building materials factory, used four roller crusher to manufacture gypsum powder; In chemical industry, used four roller crusher to crush all kinds of chemical raw materials; In Industrial Salt plant, used four roller crusher to crush salt powder; Or similar to the broken occasions.
1. High efficiency, good performance, simple structure, low noise. 2. Easy maintenance. the rollers' surface adopts anti-abrasive welding rod or exchangeable dental plate, the maintenance is simple. 3. Low cost and high efficiency, in addition to roller skin, no wearing parts. 4. Four roller crusher gives a very fine product size distribution and produces very little dust or fines.
Roll crushers have a theoretical MAXIMUM reduction ratio of 4:1. If a 2 inch particle is fed to the roll crusher the absolute smallest size one could expect from the crusher is 1/2 inch. Roll crushers will only crush material down to a minimum particle size of about 10 Mesh (2 mm). A roll crusher crushes using compression, with two rolls rotating about a shaft, towards the gap between the rolls. The gap between the rolls is set to the size of product desired, with the realization that the largest feed particle can only be 4 times the gap dimension. The particles are drawn into the gap between the rolls by their rotating motion and a friction angle formed between the rolls and the particle, called the nip angle. The two rolls force the particle between their rotating surface into the ever smaller gap area, and it fractures from the compressive forces presented by the rotating rolls. Some major advantages of roll crushers are they give a very fine product size distribution and they produce very little dust or fines. Rolls crushers are effectively used in minerals crushing where the ores are not too abrasive and they are also used in smaller scale production mining of more abrasive metal ores, such as gold. Coal is probably the largest user of roll crushers, currently, though. Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raised forms on the face of the roll. (Roll crushers used for minerals and metal ores have smooth faced rolls.)
The particles are drawn into the gap between the rolls by their rotating motion and a friction angle formed between the rolls and the particle, called the nip angle. The two rolls force the particle between their rotating surface into the ever smaller gap area, and it fractures from the compressive forces presented by the rotating rolls. Some major advantages of roll crushers are they give a very fine product size distribution and they produce very little dust or fines. Rolls crushers are effectively used in minerals crushing where the ores are not too abrasive and they are also used in smaller scale production mining of more abrasive metal ores, such as gold. Coal is probably the largest user of roll crushers, currently, though. Coal plants will use roll crushers, either single roll or double roll, as primary crushers, reducing the ROM coal. Usually, these crushers will have teeth or raised forms on the face of the roll. (Roll crushers used for minerals and metal ores have smooth faced rolls.)
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Roller crusher is a very old crushing equipment that appeared in 1806, and its structure is simple. It can crushers iron ore, Quartz Stone, rock gold, rock tantalum niobium ore, rock tin ore, rock tungsten ore, manganese ore, ilmenite ore, K-albite, limestone, river pebbles, copper ore, bauxite, barite, basalt, etc. Therefore the roll crusher is one of the most widely used crusher machines in the mining industry.
Rock Roll crusher is fine crusher equipment that similar to the hammer crusher. It can crush the compressive strength of less than 160 MPA of materials. Medium feed size, and adjustable discharge size. With the characteristic of low maintenance costs, low requirements for water, reliable performance, less power consumption, less dust, low noise and so on.
Stone roll crusher can be divided into single-roll, double-roll and multi-roll several types according to the number of rollers. According to the shape of the roll surface, have two kinds, smooth roll and tooth roll. The former is suitable for medium and fine crushing of medium hardness ores. While the latter is suitable for coarse and medium crushing of Brittle and soft ores.
The material falls between the two rollers through the feeding opening to squeezing and crushing. Then the finished material falls naturally. In the case of hard or no broken, the role can automatically retreat under the action of hydraulic cylinder or spring. The gap between the roller increase, and the hard or not broken material fall that can protect the machine from damage. The relative rotation of the two rollers have a certain gap, change the gap, you can control the product discharge granularity. Double-roll crusher is the use of a pair of opposite rotation of the Round Roller, four-roll crusher is the use of two pairs of opposite rotation of the Round Roller crushing operations.
3. If the feed material is not uniform along the length of the roller, the roller surface will not only wear quickly but also wear unevenly at every point. The annular groove appears will damage the normal crushing work, the particle size of a crushing product is not uniform. Therefore, in addition to the roller crusher used for coarse crushing, the medium and fine crushing roller crusher is usually equipped with a feeder machine to ensure continuous and uniform feeding. And the length of the feeder is equal to the length of the roller that makes the feed is uniform along the direction of the length of the roller.
4. Reasonable maintenance and proper operation can ensure long-term continuous work, reduce parking time. Only the normal management and daily check the normal working conditions, can prevent failure and ensure continuity of service.
(1) Pay attention to the fastening of the bolts of each component and tighten them immediately if found loose; (2) Before the work must start the crusher, wait for the speed in normal, then feed materials. The procedure is opposite when stopping; (3) Check the outlet regularly and remove the blockage if found; (4) Pay attention to check the wear degree of the wearing parts, at any time pay attention to the replacement of worn parts; (5) No overload and the electrical instruments keep under constant care; (6) The bearing oil should be timely, and do not make the bearing oil leakage; (7) Control the bearing temperature, the temperature rise should not be higher than the surrounding air 25 ~ 30 C; (8) Dust and other materials should be removed from the underframe plane of the movable device to prevent the movable bearing from moving on the underframe when the roller crusher encounters unbreakable materials, which may cause serious accidents.
The roller crusher composes of a roller wheel, roller supporting bearing, pressing and adjusting device and driving device. The crushing roller is the main working mechanism of the crusher, which is composed of shaft, wheel hub and roll cover. The wearing degree of roll top has a great influence on the working efficiency of roll crusher. Only when the roll top is in good condition, the crusher can get higher production capacity. Because of the importance of roller, it is of great significance to understand the factors affecting roller wear and correct repair of roller.
(1) The material is distributed evenly as far as possible to reduce the wear degree of the ring groove, and roller skin on the surface of the roller; (2) In the operation of the crusher, especially in the process of coarse crushing. Attent to the size of the ore blocks, to prevent the ore blocks from being too large. It will make severe vibration of the crusher, thus seriously wearing the roll skin; (3) The selection of roller skin with good wear resistance can reduce the wear degree of roller skin and prolong the service life of Roller; (4) the length of the feeder shall be the same as the length of the rollers to ensure uniform feeding along the length of the rollers. In addition, in order to continuously feed the ore, the speed of the feeder should be 1-3 times faster than the speed of the stick; (5) Often check the size of the broken product and move one of the rollers along the axis for a certain period of time, the distance is about 1 / 3 of the size of the ore.
Double Roll crushers are the most common type of roll crushers. The crusher machine uses two opposite rotating rollers to crush the material. It is composed of an electric motor, support, a fixed roller, a movable roller, a safety spring, etc. With smooth and serrated surfaces. The bearings of the active rollers can move along the frame which supported by strong safety springs. The bearing will remove out and spit out the article if the feed material is very hard. The roll surface has smooth and sawtooth.
Two Roll surface is smooth that mainly play the role of extrusion grinding crushing on the material. This equipment often uses for clay, coal, clinker and limestone and other materials in the fine crushing work. The roller surface with the sawtooth of the two rollers. The machine mainly plays the role of cracking and tearing. The equipment is mainly to complete the bulk crushing of materials. The smooth surface of one roll and the sawtooth of the other roll that mainly to play the role of extrusion, bending and grinding on the material. This type of double-roller crusher mainly uses to crushing clay and coal.
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Jiangxi Shicheng stone crusher manufacturer is a new and high-tech factory specialized in R&D and manufacturing crushing lines, beneficial equipment,sand-making machinery and grinding plants. Read More
Stone crusher machine divides into a mining crusher and a medical crusher. The mining crusher equipment divides into jaw crusher, gyratory crusher, impact crusher, cone crusher, hammer crushers, roller crushing, mobile crusher, etc. according to the principle of crushing. Jaw crusher for sale
Gyratory crusher is a new type of crusher which can replace fine jaw crusher or cone crusher. The gyratory crushing equipment has a bright future in the mineral processing market. Its working part is a high-speed rotary crushing roller, which is coupled with a pair of curved crushing plates arranged symmetrically on the left and the right to form two optimal crushing cavities for the pliers. Under the action of the eccentricity of the main shaft, the crushing roller makes a transverse rotary motion. And make it produce strong cyclic extrusion pressure, continuous progressive on the two crushing cavities of the material alternately broken. Then the product from the two discharge mouth constantly discharge.
The primary gyratory crusher breaks the material by feeding mouth into the two rollers between the extrusion crushing, finished materials naturally fall. In case of too hard or can not be broken, the roller crusher by hydraulic cylinder or the role of the spring can automatically retreat. So that the gap between the rollers increase, too hard or can not break down, so as to protect the machine from damage. The opposite two rollers have a certain gap, change the gap, you can control the product maximum discharge granularity. Rotary crusher is the use of a pair of opposite rotation of the round roll. Four-roll crusher is the use of two pairs of opposite rotation of the round roll crushing operations.
JXSC tooth roller crusher mainly uses the special wear-resistant tooth roller high speed rotation to crack the material (the traditional tooth roller crusher uses the low speed extrusion crushing) , has formed the high productivity mechanism. The roller crusher with saw teeth on the surface of both rollers mainly plays the role of cracking and tearing, and also has the role of crushing, grinding and crushing. The broken teeth arranges in a spiral shape. The small particles in the feed are easily discharged through the gap between the broken rollers. The big pieces are broken by the shearing and tensile force of the teeth. The situation that the material is broken without control in the traditional crusher is improved.
The good effect of fine crushing 1. There are cracks and other weak spots or defects in almost any particle. The double-cavity gyratory crushing, because of the multi-directional pressure on the material, under the interaction of multi-layer material, makes the material easier to be broken from the defect. Then it can obtain high crushing rate and produce more fine-grained products. 2. Due to Lamination crushing, even with a larger outlet, a finer product and a finer product size distribution can be obtained. 3. The high-frequency swing crushing roller can break the material more times than the traditional crusher in the crushing chamber, so the size of the discharging material is a greatly reduce. The production practice shows that when the size of the feed is 80 mm, the content of 12 mm can reach 80 %, and the content of 6 mm can reach 50%.
1. Double-chamber gyratory crusher is a crusher machine that continues working with a double-chamber. The crusher equipment changes the discontinuous working mode of single chamber of jaw crusher. 2. The characterize is that producing more fine products under the condition of larger discharge port. Under the premise of ensuring fine products, the larger discharge port can obviously have more processing capacity.
Small work vibration Gyratory crusher has no supporting structure of the elbow plate. The crushing roller works in a balanced rotary state. So the vibration is small and the noise is low. It can work smoothly on the steel frame without foundation.
1. When double cavity rotary crusher machine crushing materials, the roller swing movement. The crushing force mainly occurs near the eccentric position of the crushing roller, forming high power density crushing. Then forming the crushing process with the circular movement of the eccentric position of the crushing roller. Because the crushing force concentrates on a small amount of material in a section of the crushing chamber, the crushing force uses in the operation is smaller and the energy utilization rate is high. Therefore, it has obvious energy-saving effect. 2. The crushing machine continuous working, which can make full use of the output energy of the driving motor. And it can make use of the strong kinetic energy of debris splashing produced in the process of rock crushing to carry out the re-crushing of the adjacent rocks. Repurposing the secondary energy. 3. As fully utilize the energy, the production practice has proved that the electricity consumption per ton of ore processing is generally 0.5 degrees.
1. The double chamber rotary crusher works smoothly on the steel frame without foundation. Then civil construction is easier and installation is more convenient. 2. The crusher machine parts are all used expansion sleeve connection. So it is very convenient to disassemble and assemble, repeated disassembly will not affect the assembly accuracy of the machine. 3. Easy adjustment of discharge opening and simple structure. 4. Only use grease lubrication, management, and maintenance of convenient, low cost.
1. The two cone shapes of the gyratory crusher are steeply inclined. The movable cone is upright, and the fixed cone is an inverted truncated cone which in order to increase the need for feeding ore. Nevertheless, cone crusher has two cone shapes, which are gently inclined, vertical frustum cone. There is a certain length of parallel ore crushing area (parallel belt) between the two cones which in order to control the requirement of mineral product granularity. Because of the medium and fine crusher, and coarse crusher different. It is to crush product quality and production capacity as the primary consideration.
4. The gyratory stone crusher changes the size of the ore discharge port is using to adjust the rise or fall of movable cone. Cone crushers adjust the height of the fixed cone to realize theadjust of the width of the ore discharge mouth.
Jiangxi Shicheng stone crusher manufacturer is a new and high-tech factory specialized in R&D and manufacturing crushing lines, beneficial equipment,sand-making machinery and grinding plants. Read MoreGet in Touch with Mechanic