4. In 2017, our lab ball mills are exported to most countries in the world. we have gained a high reputation and good recognition from a lot of domestic and overseas customers such as Harvard University, Peking University, Tsinghua University, Foxconn, Cornell, BYD, CASC etc.
With rich experiences of hard work in the industry, all kinds oflab ball millswe designed and produced have many advantages such as impact structure, flexible and simple operation, grinding with dry and wet materials, which can meet requirements of dispersed grinding of all laboratories and further greatly benefit enlarging experimental results to production machine. Thelab ball millsare the best choice for your labs grinding and research of new materials.
Zhengzhou Nanbei Instrument Equipment Co.,Ltd. is affiliated to Nanbei International Group Limited.It has been exported to more than 120 countries around the world for 20 years , and it is one of the largest and the most comprehensive instrument and equipment manufacturers in China. It integrates research , development , production and sales as one of the independent legal personality persified technology group. NANBEI has obtained ISO9001:2015,SGS,TUV certification,and our products have EU CE,RoHS and CNAS certification.We are headquartered in Zhengzhou,China,and have offices in Beijing,Shanghai, Shenzhen and Hong Kong.
Professional Laboratory Solution Professional Research/After-Sale Serice We do not just sell equipment,we pay more attention to provide users with high quality service!
How to C hoose a L aboratory B all M ill The pretreatment of solid samples in the laboratory is usually done by means of a ball mill. So how do we choose a suitable laboratory ball mill? We usually need to know the specific situation of the...
Dear Customer: The Chinese Spring Festival is coming.NANBEI Company hereby informsyou of the arrangement for the Spring Festival of2021: Holidaytime: Feb.11th-Feb.17th. The shipping will be delay. Our online customerserviceisavailable24 hou...
Planetary ball mill, also known as planetary ball milling machine, is the new favorite of laboratory grinding instruments in recent years. Compared with traditional conventional grinding equipment, its working efficiency is high and stable,...
The ballmill jaris one of the grinding kits of the planetary ball mill used in the laboratory, where the sample to be ground and the grinding ball are placed.There are many types of ball mill jars. According to the grinding mode, they can be...
The laboratory planetary ball mill adopts the working principle of planetary operation. Compared with the traditional ball mill, itsgrinding effect is greatly improved, and it has received more attention in recent years. When some samples in...
Recently, Zhengzhou Nanbei Instrument Equipment Co., Ltd. was awarded the 2020 TaxpayCredit A-level Taxpayer, which is the fourth consecutive year that our company has received this honor. Honesty is Gods criterion, and the pursuit of honest...
Raw mill is generally called cement raw mill, raw mill in cement plant, it refers to a common type of cement equipment in the cement plant. In the cement manufacturing process, raw mill in cement plant grind cement raw materials into the raw mix, and the raw mix is sent to the cement kiln to make cement clinker, next, clinker and other admixtures will be ground into finished cement by cement mill.
As for the type of raw mill, there are two types including cement ball mill and vertical cement mill. In the traditional cement raw mill system, the cement ball mill system is more typical. After technology modification, the vertical cement mill has obvious advantages compared with the cement ball mill, and it is suitable for the large cement production line.
AGICO CEMENT is a raw mill manufacturer from china who has the ability to manufacture cement ball mill and vertical cement mill. As a leading and trusted manufacturer, we had exported many projects of cement raw mill and cement equipment to the countries or regions around the world. Why AGICO CEMENT is popular?
Vertica raw mill, also known as vertical roller mill, in the 1920s, the first vertical raw mill in cement plant is designed in German. It is widely used in cement, electric power, metallurgy, chemical industry, and other industries.
Low investment: the vertical raw mill set crushing, drying, grinding, grading transportation in one, simple system, compact layout, less space, it also can be arranged in the open air, save a lot of investment costs.Low operation cost: small energy consumption and less damage reduce the running cost.Environment protection and clean: small vibration, low noise, and good sealing, the system works under negative pressure, no dust overflow.Stable quality of raw mix: because the material stays in the raw mill for a short time, it is easy to detect and control the product size and chemical composition, reduce repeated grinding, and stabilize the product quality.
The main motor drives a millstone by rotational speed reducer, at the same time the wind enters into the raw mill from the air inlet, material through the screw feeder fell in the middle of the raw mill, under the action of centrifugal force, the raw materials move uniformly from central to the edge of the millstone, the materials will be ground by the roller when it passes through the grinding roller way, large materials are directly crushed. Crushed material continues to move to mill edge, until being taken away by the wind ring in strong turbulence, and larger particles material again fell to the mill to continue to crush, the flow of materials through the upper part of the separator, in the effect of separator blade, coarse particle back to the grinding mill, qualified fine powder with airflow is out of the raw mill, and collected by the powder collection.
The cement ball mill usually can be applied to raw meal grinding or cement grinding. Besides, the cement ball mill also can be used for metallurgical, chemical, electric power, other mining powder grinding, and other grindable materials.
Safe and reliable system: the maintenance of the reduction gear and gear is more convenient, firm and wear-resistant, and also reduces the downtime, maintenance time and the labor intensity of the operators.
Good wear resistance and long service life: Cement ball mill adopts the high-quality wear-resisting material, and the lining can be removed, therefore the service life of the equipment or vulnerable part is all longer.
The main working part of cement ball mill occurred in the low-speed rotary cylinder, when the cylinder is drove to rotary, grinding medium is attached on the liner to rotary together due to the effect of inertial centrifugal force, and taken to a certain height, freely fall because of gravity, grinding medium break the materials in the cylinder body, at the same time the grinding body in the rotary raw mill have circular motion, also can produce sliding and rolling, which result in grinding among the grinding medium, liner, and materials. When the material is crushed and ground by impact, the material flows slowly from the feeding end to the discharging end to finish the grinding operation.
The raw mill is a kind of necessary cement equipment in the cement plant. In the real working condition, but the large configuration will produce a bad effect on the cement plant, so it is very important to set a reasonable configuration of the raw mill. There are five reasons why we control the configuration of the raw mill in cement plant:
Composition fluctuation of the raw meal: The frequently start-stop of a raw mill will bring different degrees of influence on the quality, whether it is the cement ball mill, the vertical cement mill or the cement roller press system.
Definition: light expanded clay aggregate or expanded clay aggregate (LECA or ECA), also called ceramic pellet, is one of the most popular lightweight aggregate made by sintering clay in a rotary kiln to about 1200C.
Current lightweight expanded clay aggregate market data shows that the market of LECA has shifted its direction from traditional construction engineering to craft products and horticultural maintenance.
The production materials of traditional materials such as clay and shale have been replaced by industrial waste residue and silt and the development trend of machinery has evolved into a large scale and automation.
In the following future, while focusing on economic development, the LECA suppliers should pay attention to reduce pollution and resource waste to ensure the rapid and stable development of production lines.
There are usually two types of LECA manufacturing techniques: sintering and sintering-expanded. The difference between them is in the process of sintering-expanded, the aggregate expands by a larger volume.
Jaw crusher is the primary machine which is used for coarse, medium and fine crushing of various ores and rocks with a comprehensive strength between 147 and 245 MPa, and processes them into small pieces of 10-350 mm.
Advantages: In recent years, FTM has specially developed a powerful jaw crusher to meet the needs of crushing high-strength and high-hardness micro-carbon ferrochrome in metallurgical, mining, construction and other industrial sectors.
The ball mill is the key equipment for grinding the material after crushing. Ball mill is widely used in the production of cement, silicate products, new building materials, refractory materials, fertilizers, black and non-ferrous metal dressings and glass ceramics, dry or wet grinding of various ores and other grindable materials.
The granulation disc adopts an overall circular arc structure, and the granulation rate can reach 93% or more. The granulation tray has three discharge ports, which facilitate intermittent production operations, greatly reducing labor intensity and improving labor efficiency.
The dryer is mainly used for drying certain moisture or particle size materials of mineral processing, building materials, metallurgy and chemical industry, and the equipment operation is simple and reliable.
Advantages: The equipment has an application range and it also can be customized. It has low noise, high efficiency and environmental protection, advanced lubrication system, long service life, small installation inclination angle and good screening effect.
The single-cylinder cooler is one of the important equipment in the rotary kiln system. The clinker from the rotary kiln (1000-1200 C) is fully exchanged with the air through the cylinder rotating belt to cool the material to below 200 C, at the same time improve clinker quality and grindability.
Fote Mining Machinery (FTM) located in Henan is one of the most famous mining machinery suppliers, which is committed to manufacturing mining machines of green building materials, and provides intelligent mining products and advanced solutions.
FTM is a professional supplier of lightweight expanded clay aggregate machinery and equipment, and all the equipment has high quality and significant advantages, and the prices are also very reasonable.
In a word, Fote Mining Machinery is a good choice for LECA suppliers to choose lightweight expanded clay aggregate machinery manufacturers. Welcome to consult us if you have any requirements about the LECA production line.
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.
In all ore dressing and milling Operations, including flotation, cyanidation, gravity concentration, and amalgamation, the Working Principle is to crush and grind, often with rob mill & ball mills, the ore in order to liberate the minerals. In the chemical and process industries, grinding is an important step in preparing raw materials for subsequent treatment.In present day practice, ore is reduced to a size many times finer than can be obtained with crushers. Over a period of many years various fine grinding machines have been developed and used, but the ball mill has become standard due to its simplicity and low operating cost.
A ball millefficiently operated performs a wide variety of services. In small milling plants, where simplicity is most essential, it is not economical to use more than single stage crushing, because the Steel-Head Ball or Rod Mill will take up to 2 feed and grind it to the desired fineness. In larger plants where several stages of coarse and fine crushing are used, it is customary to crush from 1/2 to as fine as 8 mesh.
Many grinding circuits necessitate regrinding of concentrates or middling products to extremely fine sizes to liberate the closely associated minerals from each other. In these cases, the feed to the ball mill may be from 10 to 100 mesh or even finer.
Where the finished product does not have to be uniform, a ball mill may be operated in open circuit, but where the finished product must be uniform it is essential that the grinding mill be used in closed circuit with a screen, if a coarse product is desired, and with a classifier if a fine product is required. In most cases it is desirable to operate the grinding mill in closed circuit with a screen or classifier as higher efficiency and capacity are obtained. Often a mill using steel rods as the grinding medium is recommended, where the product must have the minimum amount of fines (rods give a more nearly uniform product).
Often a problem requires some study to determine the economic fineness to which a product can or should be ground. In this case the 911Equipment Company offers its complete testing service so that accurate grinding mill size may be determined.
Until recently many operators have believed that one particular type of grinding mill had greater efficiency and resulting capacity than some other type. However, it is now commonly agreed and accepted that the work done by any ballmill depends directly upon the power input; the maximum power input into any ball or rod mill depends upon weight of grinding charge, mill speed, and liner design.
The apparent difference in capacities between grinding mills (listed as being the same size) is due to the fact that there is no uniform method of designating the size of a mill, for example: a 5 x 5 Ball Mill has a working diameter of 5 inside the liners and has 20 per cent more capacity than all other ball mills designated as 5 x 5 where the shell is 5 inside diameter and the working diameter is only 48 with the liners in place.
Ball-Rod Mills, based on 4 liners and capacity varying as 2.6 power of mill diameter, on the 5 size give 20 per cent increased capacity; on the 4 size, 25 per cent; and on the 3 size, 28 per cent. This fact should be carefully kept in mind when determining the capacity of a Steel- Head Ball-Rod Mill, as this unit can carry a greater ball or rod charge and has potentially higher capacity in a given size when the full ball or rod charge is carried.
A mill shorter in length may be used if the grinding problem indicates a definite power input. This allows the alternative of greater capacity at a later date or a considerable saving in first cost with a shorter mill, if reserve capacity is not desired. The capacities of Ball-Rod Mills are considerably higher than many other types because the diameters are measured inside the liners.
The correct grinding mill depends so much upon the particular ore being treated and the product desired, that a mill must have maximum flexibility in length, type of grinding medium, type of discharge, and speed.With the Ball-Rod Mill it is possible to build this unit in exact accordance with your requirements, as illustrated.
To best serve your needs, the Trunnion can be furnished with small (standard), medium, or large diameter opening for each type of discharge. The sketch shows diagrammatic arrangements of the four different types of discharge for each size of trunnion opening, and peripheral discharge is described later.
Ball-Rod Mills of the grate discharge type are made by adding the improved type of grates to a standard Ball-Rod Mill. These grates are bolted to the discharge head in much the same manner as the standard headliners.
The grates are of alloy steel and are cast integral with the lifter bars which are essential to the efficient operation of this type of ball or rod mill. These lifter bars have a similar action to a pump:i. e., in lifting the product so as to discharge quickly through the mill trunnion.
These Discharge Grates also incorporate as an integral part, a liner between the lifters and steel head of the ball mill to prevent wear of the mill head. By combining these parts into a single casting, repairs and maintenance are greatly simplified. The center of the grate discharge end of this mill is open to permit adding of balls or for adding water to the mill through the discharge end.
Instead of being constructed of bars cast into a frame, Grates are cast entire and have cored holes which widen toward the outside of the mill similar to the taper in grizzly bars. The grate type discharge is illustrated.
The peripheral discharge type of Ball-Rod Mill is a modification of the grate type, and is recommended where a free gravity discharge is desired. It is particularly applicable when production of too many fine particles is detrimental and a quick pass through the mill is desired, and for dry grinding.
The drawings show the arrangement of the peripheral discharge. The discharge consists of openings in the shell into which bushings with holes of the desired size are inserted. On the outside of the mill, flanges are used to attach a stationary discharge hopper to prevent pulp splash or too much dust.
The mill may be operated either as a peripheral discharge or a combination or peripheral and trunnion discharge unit, depending on the desired operating conditions. If at any time the peripheral discharge is undesirable, plugs inserted into the bushings will convert the mill to a trunnion discharge type mill.
Unless otherwise specified, a hard iron liner is furnished. This liner is made of the best grade white iron and is most serviceable for the smaller size mills where large balls are not used. Hard iron liners have a much lower first cost.
Electric steel, although more expensive than hard iron, has advantage of minimum breakage and allows final wear to thinner section. Steel liners are recommended when the mills are for export or where the source of liner replacement is at a considerable distance.
Molychrome steel has longer wearing qualities and greater strength than hard iron. Breakage is not so apt to occur during shipment, and any size ball can be charged into a mill equipped with molychrome liners.
Manganese liners for Ball-Rod Mills are the world famous AMSCO Brand, and are the best obtainable. The first cost is the highest, but in most cases the cost per ton of ore ground is the lowest. These liners contain 12 to 14% manganese.
The feed and discharge trunnions are provided with cast iron or white iron throat liners. As these parts are not subjected to impact and must only withstand abrasion, alloys are not commonly used but can be supplied.
Gears for Ball-Rod Mills drives are furnished as standard on the discharge end of the mill where they are out of the way of the classifier return, scoop feeder, or original feed. Due to convertible type construction the mills can be furnished with gears on the feed end. Gear drives are available in two alternative combinations, which are:
All pinions are properly bored, key-seated, and pressed onto the steel countershaft, which is oversize and properly keyseated for the pinion and drive pulleys or sheaves. The countershaft operates on high grade, heavy duty, nickel babbitt bearings.
Any type of drive can be furnished for Ball-Rod Mills in accordance with your requirements. Belt drives are available with pulleys either plain or equipped with friction clutch. Various V- Rope combinations can also be supplied.
The most economical drive to use up to 50 H. P., is a high starting torque motor connected to the pinion shaft by means of a flat or V-Rope drive. For larger size motors the wound rotor (slip ring) is recommended due to its low current requirement in starting up the ball mill.
Should you be operating your own power plant or have D. C. current, please specify so that there will be no confusion as to motor characteristics. If switches are to be supplied, exact voltage to be used should be given.
Even though many ores require fine grinding for maximum recovery, most ores liberate a large percentage of the minerals during the first pass through the grinding unit. Thus, if the free minerals can be immediately removed from the ball mill classifier circuit, there is little chance for overgrinding.
This is actually what has happened wherever Mineral Jigs or Unit Flotation Cells have been installed in the ball mill classifier circuit. With the installation of one or both of these machines between the ball mill and classifier, as high as 70 per cent of the free gold and sulphide minerals can be immediately removed, thus reducing grinding costs and improving over-all recovery. The advantage of this method lies in the fact that heavy and usually valuable minerals, which otherwise would be ground finer because of their faster settling in the classifier and consequent return to the grinding mill, are removed from the circuit as soon as freed. This applies particularly to gold and lead ores.
Ball-Rod Mills have heavy rolled steel plate shells which are arc welded inside and outside to the steel heads or to rolled steel flanges, depending upon the type of mill. The double welding not only gives increased structural strength, but eliminates any possibility of leakage.
Where a single or double flanged shell is used, the faces are accurately machined and drilled to template to insure perfect fit and alignment with the holes in the head. These flanges are machined with male and female joints which take the shearing stresses off the bolts.
The Ball-Rod Mill Heads are oversize in section, heavily ribbed and are cast from electric furnace steel which has a strength of approximately four times that of cast iron. The head and trunnion bearings are designed to support a mill with length double its diameter. This extra strength, besides eliminating the possibility of head breakage or other structural failure (either while in transit or while in service), imparts to Ball-Rod Mills a flexibility heretofore lacking in grinding mills. Also, for instance, if you have a 5 x 5 mill, you can add another 5 shell length and thus get double the original capacity; or any length required up to a maximum of 12 total length.
On Type A mills the steel heads are double welded to the rolled steel shell. On type B and other flanged type mills the heads are machined with male and female joints to match the shell flanges, thus taking the shearing stresses from the heavy machine bolts which connect the shell flanges to the heads.
The manhole cover is protected from wear by heavy liners. An extended lip is provided for loosening the door with a crow-bar, and lifting handles are also provided. The manhole door is furnished with suitable gaskets to prevent leakage.
The mill trunnions are carried on heavy babbitt bearings which provide ample surface to insure low bearing pressure. If at any time the normal length is doubled to obtain increased capacity, these large trunnion bearings will easily support the additional load. Trunnion bearings are of the rigid type, as the perfect alignment of the trunnion surface on Ball-Rod Mills eliminates any need for the more expensive self-aligning type of bearing.
The cap on the upper half of the trunnion bearing is provided with a shroud which extends over the drip flange of the trunnion and effectively prevents the entrance of dirt or grit. The bearing has a large space for wool waste and lubricant and this is easily accessible through a large opening which is covered to prevent dirt from getting into the bearing.Ball and socket bearings can be furnished.
Scoop Feeders for Ball-Rod Mills are made in various radius sizes. Standard scoops are made of cast iron and for the 3 size a 13 or 19 feeder is supplied, for the 4 size a 30 or 36, for the 5 a 36 or 42, and for the 6 a 42 or 48 feeder. Welded steel scoop feeders can, however, be supplied in any radius.
The correct size of feeder depends upon the size of the classifier, and the smallest feeder should be used which will permit gravity flow for closed circuit grinding between classifier and the ball or rod mill. All feeders are built with a removable wearing lip which can be easily replaced and are designed to give minimum scoop wear.
A combination drum and scoop feeder can be supplied if necessary. This feeder is made of heavy steel plate and strongly welded. These drum-scoop feeders are available in the same sizes as the cast iron feeders but can be built in any radius. Scoop liners can be furnished.
The trunnions on Ball-Rod Mills are flanged and carefully machined so that scoops are held in place by large machine bolts and not cap screws or stud bolts. The feed trunnion flange is machined with a shoulder for insuring a proper fit for the feed scoop, and the weight of the scoop is carried on this shoulder so that all strain is removed from the bolts which hold the scoop.
High carbon steel rods are recommended, hot rolled, hot sawed or sheared, to a length of 2 less than actual length of mill taken inside the liners. The initial rod charge is generally a mixture ranging from 1.5 to 3 in diameter. During operation, rod make-up is generally the maximum size. The weights per lineal foot of rods of various diameters are approximately: 1.5 to 6 lbs.; 2-10.7 lbs.; 2.5-16.7 lbs.; and 3-24 lbs.
Forged from the best high carbon manganese steel, they are of the finest quality which can be produced and give long, satisfactory service. Data on ball charges for Ball-Rod Mills are listed in Table 5. Further information regarding grinding balls is included in Table 6.
Rod Mills has a very define and narrow discharge product size range. Feeding a Rod Mill finer rocks will greatly impact its tonnage while not significantly affect its discharge product sizes. The 3.5 diameter rod of a mill, can only grind so fine.
Crushers are well understood by most. Rod and Ball Mills not so much however as their size reduction actions are hidden in the tube (mill). As for Rod Mills, the image above best expresses what is going on inside. As rocks is feed into the mill, they are crushed (pinched) by the weight of its 3.5 x 16 rods at one end while the smaller particles migrate towards the discharge end and get slightly abraded (as in a Ball Mill) on the way there.
We haveSmall Ball Mills for sale coming in at very good prices. These ball mills are relatively small, bearing mounted on a steel frame. All ball mills are sold with motor, gears, steel liners and optional grinding media charge/load.
Ball Mills or Rod Mills in a complete range of sizes up to 10 diameter x20 long, offer features of operation and convertibility to meet your exactneeds. They may be used for pulverizing and either wet or dry grindingsystems. Mills are available in both light-duty and heavy-duty constructionto meet your specific requirements.
All Mills feature electric cast steel heads and heavy rolled steelplate shells. Self-aligning main trunnion bearings on large mills are sealedand internally flood-lubricated. Replaceable mill trunnions. Pinion shaftbearings are self-aligning, roller bearing type, enclosed in dust-tightcarrier. Adjustable, single-unit soleplate under trunnion and drive pinionsfor perfect, permanent gear alignment.
Ball Mills can be supplied with either ceramic or rubber linings for wet or dry grinding, for continuous or batch type operation, in sizes from 15 x 21 to 8 x 12. High density ceramic linings of uniform hardness male possible thinner linings and greater and more effective grinding volume. Mills are shipped with liners installed.
Complete laboratory testing service, mill and air classifier engineering and proven equipment make possible a single source for your complete dry-grinding mill installation. Units available with air swept design and centrifugal classifiers or with elevators and mechanical type air classifiers. All sizes and capacities of units. Laboratory-size air classifier also available.
A special purpose batch mill designed especially for grinding and mixing involving acids and corrosive materials. No corners mean easy cleaning and choice of rubber or ceramic linings make it corrosion resistant. Shape of mill and ball segregation gives preferential grinding action for grinding and mixing of pigments and catalysts. Made in 2, 3 and 4 diameter grinding drums.
Nowadays grinding mills are almost extensively used for comminution of materials ranging from 5 mm to 40 mm (3/161 5/8) down to varying product sizes. They have vast applications within different branches of industry such as for example the ore dressing, cement, lime, porcelain and chemical industries and can be designed for continuous as well as batch grinding.
Ball mills can be used for coarse grinding as described for the rod mill. They will, however, in that application produce more fines and tramp oversize and will in any case necessitate installation of effective classification.If finer grinding is wanted two or three stage grinding is advisable as for instant primary rod mill with 75100 mm (34) rods, secondary ball mill with 2540 mm(11) balls and possibly tertiary ball mill with 20 mm () balls or cylpebs.To obtain a close size distribution in the fine range the specific surface of the grinding media should be as high as possible. Thus as small balls as possible should be used in each stage.
The principal field of rod mill usage is the preparation of products in the 5 mm0.4 mm (4 mesh to 35 mesh) range. It may sometimes be recommended also for finer grinding. Within these limits a rod mill is usually superior to and more efficient than a ball mill. The basic principle for rod grinding is reduction by line contact between rods extending the full length of the mill, resulting in selective grinding carried out on the largest particle sizes. This results in a minimum production of extreme fines or slimes and more effective grinding work as compared with a ball mill. One stage rod mill grinding is therefore suitable for preparation of feed to gravimetric ore dressing methods, certain flotation processes with slime problems and magnetic cobbing. Rod mills are frequently used as primary mills to produce suitable feed to the second grinding stage. Rod mills have usually a length/diameter ratio of at least 1.4.
Tube mills are in principle to be considered as ball mills, the basic difference being that the length/diameter ratio is greater (35). They are commonly used for surface cleaning or scrubbing action and fine grinding in open circuit.
In some cases it is suitable to use screened fractions of the material as grinding media. Such mills are usually called pebble mills, but the working principle is the same as for ball mills. As the power input is approximately directly proportional to the volume weight of the grinding media, the power input for pebble mills is correspondingly smaller than for a ball mill.
A dry process requires usually dry grinding. If the feed is wet and sticky, it is often necessary to lower the moisture content below 1 %. Grinding in front of wet processes can be done wet or dry. In dry grinding the energy consumption is higher, but the wear of linings and charge is less than for wet grinding, especially when treating highly abrasive and corrosive material. When comparing the economy of wet and dry grinding, the different costs for the entire process must be considered.
An increase in the mill speed will give a directly proportional increase in mill power but there seems to be a square proportional increase in the wear. Rod mills generally operate within the range of 6075 % of critical speed in order to avoid excessive wear and tangled rods. Ball and pebble mills are usually operated at 7085 % of critical speed. For dry grinding the speed is usually somewhat lower.
The mill lining can be made of rubber or different types of steel (manganese or Ni-hard) with liner types according to the customers requirements. For special applications we can also supply porcelain, basalt and other linings.
The mill power is approximately directly proportional to the charge volume within the normal range. When calculating a mill 40 % charge volume is generally used. In pebble and ball mills quite often charge volumes close to 50 % are used. In a pebble mill the pebble consumption ranges from 315 % and the charge has to be controlled automatically to maintain uniform power consumption.
In all cases the net energy consumption per ton (kWh/ton) must be known either from previous experience or laboratory tests before mill size can be determined. The required mill net power P kW ( = ton/hX kWh/ton) is obtained from
Trunnions of S.G. iron or steel castings with machined flange and bearing seat incl. device for dismantling the bearings. For smaller mills the heads and trunnions are sometimes made in grey cast iron.
The mills can be used either for dry or wet, rod or ball grinding. By using a separate attachment the discharge end can be changed so that the mills can be used for peripheral instead of overflow discharge.
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Contact NowHorizontal shaft impact crusher1.This crusher is as the seconday crusher, which is used for crushing the not very big material to small size 2.This crusher is widely used on stone crushing and ore crushing 3.This crusher is arranged after jaw crusher 4.It works by hammerhead crushing the...Read More
Contact NowRock Cone CrusherCone crusher: This crusher is fine size crusher for crushing the material to very smaller size 1.High effiency crushing ratio 2.High cost It generally is used in line for special stone or having special require ore crushing.Read More
GREAT-WALL STEEL CASTING CHAENG SLAG POTS What is slag pot? Slag pot is also called casting ladle, slag bucket, or slag ladle. It is important container holding high temperature liquid steel slag in the process of steel making, the main structure contain parts of tank, lug, supporting foot, tilting arm etc. The slag pots purchased by metallurgical enterprises are always produced by conventional casting process, which have long production cycle, short service life, and high scrap rate. While CHAENG makes great innovations in casting process of slag pot to gives the CHAENG slag pot advantages of short production cycle, long service life and strong deformation resistance. Learn More We win in our service, you win in your choice. Reliable product quality 1. Select proper materials and optimize the casting processes of slag pot, according to customers' actual operation conditions and actual demands. 2. Digital simulation for casting process through CAE software, to optimize the slag pot casting process. 3. Longer service life, first maintenance can be done 2-3 months later than similar products from other manufacturers. (The life of the slag pot is directly related to the use environment and use frequency.) 4. Excellent high-temperature mechanical properties, good thermal cracking resistance. 5. Smooth inner wall of slag pot, to avoid adhering slag during operation. 6. Level 2 of flaw detection - Ultrasonic and magnetic particle flaw detection level can reach the second level standards. Strong capability of casting CHAENG has strong production capability. It has advanced processing equipment from Russia and Germany, 9,600m2 of molding area, and its annual production capacity can reach 30000 tons, possessing the ability to manufacture steel castings with maximum single weight of 132 ton. CHAENG Casting also provide finish machining for steel castings. It has cp8m heavy double-column vertical lathe, (p6.3m vertical lathe and (p8m gear hobbing machine imported from Russian, Czech T6920 landing boring-milling machine and domestic TX220 floor type boring-milling machine, 6625Y (2.5m x 8.0m) gantry milling machine imported from Russia, domestic 120 x 3000 heavy CNC Universal Machine, and other processing equipment. Fast delivery Such a strong production capability of CHAENG ensures a fast delivery for you, giving priority to good product quality. And, Great Wall Steel Casting is located in a transport hub city, which can ensure our products are delivered to the nearest shipping ports as soon as possible. What we have done ? Our slag pots have been chosen by many countries and many global steel companies, since 2008 we have signed the contract of more than 50 types of slag pot, and produce 732 pieces of casting process, they are exported to countries around the world: the United States Mittal, Germany, Italy, India's TATA steel company, Japan Chiba, Canada, Taiwan, etc. Importing Countries Brazil Koreas posco Mittal in USA Mittal in USA Hengyang Chiba in Japan Mittal in USA Mexico Mittal in USA Mittal in USA Purchasing Date Name Slag pot flow chart wood pattern finishing grinding heat preservation flaw detection final products Contact Us CHAENG can supply various specifications of high-quality customized slag pots according to your drawings with fast delivery time. Welcome to leave online message and get in touch with us, we will be glad to provide you with required detailed information in the first time.
Leading supplier of high alloy castings and forgings. There are 4 companies with sales of more than 100 million yuan, across the 4 major areas of wear resistance, heat resistance, corrosion resistance, and machinery
Model Number:Titanium Ball Material:Alloy titanium Name:Titanium balls Color:nature,golden coated,silver coated,zinc plated,Nickel plated. Certifications:ISO SGS Package:Plastic Bag + Cardboard Box + Wooden Grade:G10-G100 Surface:high polished,soft polished,harden polished,unpolished. Size:0.3mm-76.2mm Feature:nonmegnetic,strong anti-wear, high precision, easy storage Application:high strength, stiffness, good toughness. Supply Ability:10 Ton/Tons per Month
Titanium ball are light weight (approximately 60% of the density of steel) that are nonmagnetic and offer good heat transfer properties. Titanium balls are an excellent choice for a variety of medical applications due to its general biological compatibility. The combination of high strength, stiffness, good toughness and low density make titanium an excellent choice for many aerospace applications. The excellent corrosion resistance and biocompatibility coupled with good strengths make it very useful in chemical and petrochemical applications, marine environments and jewelry.
Our products have been widely applied in the hardware goods form a complete set for the aviation and spaceflight industry, automobiles, sprayers, stainless steel bearings, and handicraft and precision instruments. We have advanced production equipment and consummative instruments. We use perfect equipment to detect the roundness, libration size and the quality of the surface of steel balls.We will sell our steel balls around the world; we believe we have a bright future.
Pure Titanium and Titanium Alloys possess high strength-to-weight ratio,excellent low-temperature resistance and corrosion resistance,high temperature strength at 400-500 ,small thermal expasion coefficient and high fatigue strength, so they are widely used in the equipment for high temperature environment, including aricraft equipment, petroleum and petrochemical, biomaterial,ocean and chemical industry,for example: blade,storage tank,target,tube and heat-ecchanger eqiupment.
Pilot-scale food type desktop freeze dryer, humanized design, small size, compact structure, high degree of automation, only one button can complete the whole process of freeze-drying. Suitable for personal and corporate use.
This instrument complies with GB/T2539 and is suitable for the determination of the melting point of paraffin wax, but not for microcrystalline wax and petroleum grease. The instrument adopts PLC industrial touch screen, HMI man-machine interface, configuration network, mobile phone or computer remote control.
PKT-W533 Water Vapor Permeability Analyzer tests the water vapor transmission rate of plastic film, composite film, aluminum foil, thin sheets, rubber, porcelain, solar panel, medical patch and so on.
PT-D92-8C/109 is designed and made as per the National Standard GB/T3536, ISO 2592, ASTM 92 Test Methods for Flash Point and Fire Point of Petroleum Products (Cleveland Open Cup Methods), and T0651 Asphalt Flash Point and Fire Point Test (Cleveland Open Cup Methods) in the Industry Standard JTJ052Specification and Test Methods of Bitumen and...
XiangYi Instrument (Xiangtan) Co., Ltd. is established in 2005 by restructuring the original state-owned Xianglan Group Xiangtan Instrument Factory. The company registered capital is 10 million Yuan. It is the Hunan Province Instrument Industry Association executive director unit. The Factory was founded in 1970, with solid technology and rich equipment manufacturing experience has become a large-scale laboratory equipment professional production factory. The company occupies 20 acres, the standard production workshop is 4,000 square meters, office / R & D site is 2,000 square meters.
Our main product include X-Ray Element Tester, Thermal Analyzer, Particle Size Analyzer, Surface Interface Tester, ContactAngle Meter,Aperture Tester,Petroleum/Oil Tester, Freeze Dryer/Lyophilizer, Spray Dryer, Rotary Evaporator, Glass Reactor, Circulation Chiller and other Biotechnology products.
A pulley is a circular object, usually fabricated from heavy duty materials, which is used in numerous applications, the most common of which include applying forces or transmitting force, carrying things or guiding belts, chain, and ropes. The pulley wheel features an axle that is commonly installed to a frame or brace that allows the wheel to spin freely.
This reduces rubbing when a rope, chain, or belt runs around the pulley. The outer side of the pulley can be grooved to help guide the belts, ropes, chains or cables preventing them from sliding off the pulley during operation.The applications of a pulley wheel can differ significantly, and the size of the wheel will often vary based on the function for which it is being used.
A pulley wheel can be used in an automotive engine compartment to support the timing belt or the serpentine belt and the pulley may also be used to power peripheral equipment such as power steering machines and air conditioners. These pulleys will be fairly small.
WORM GEARProducer supplier exporter of worm gearWe warmly welcome prospects each in your house and abroad to contact us to negotiate company, exchange information and facts and cooperate with us.We specializing while in the manufacturing of Agricultural Gearbox, PTO...
Carbon Steel And Stainless Steel Conveyor Chain Hollow Pin ChainTransmission chain(Driving Chain), Conveyor Chain C roller chain, Engineering Chain, Stainless Steel Chain, Lifting Chain, Agricultural Chain, Forging Series, Cast Iron Chain. Hollow Pin Chains 08BP...
single row four level get in touch with ball slewing rings is composed of two seat rings, which style and design in compact construction and light bodyweight, steel ball get hold of with all the circular raceway at 4 points; it might bear the axial force, radial force...
single row four point get hold of ball slewing rings is composed of two seat rings, which layout in compact structure and light bodyweight, steel ball get hold of with the circular raceway at 4 points; it may possibly bear the axial force, radial force as well as...
Nylon gear racks is used on sliding gate, There is certainly steel core within it. we exported to Europe in massive quantity.There is steel core inside the nylon gear rack.You will find two products accessible. You will discover four eye(4 bracket is light variety)...
IN CNC GEAR Production PLANT, Over 10 OF GEARS Producing LINES:Gear turning,hobbing,shaving,shaping,grinding,slotting,broaching , we?ve created significant investment..Our large precision gear can preserve a large high-quality prodcuts.CAN DO All the HEATING Method:...
PTO is actually a splined drive shaft that is certainly frequently placed on tractors or might be employed to supply electrical power backup to a separate machine. The PTO shafts that we give comprises of two carden joints and telescopic couplings. Tractor side and...
Manufacturer supplier exporter of bush chainsWe specializing from the production of Agricultural Gearbox, PTO Shafts, Sprockets, Fluid Coupling, Worm Gear Reducers, Gears and racks, Roller Chains, Sheave and Pulleys, Planetary Gearboxes, Timing Pulleys, Shaft Collars...
Bush ChainsAs one of leading motor coupling companies, suppliers and exporters of mechanical merchandise, We supply bush chains and many other solutions.Producer supplier exporter of bush chainsWe specializing during the production of Agricultural Gearbox, PTO Shafts,...Get in Touch with Mechanic