mining mining portable rod mills

rod mills archives - international mining

rod mills archives - international mining

Metso Outotec has, after reviewing the combined horizontal mill product offering from the Metso and Outotec companies, unveiled a harmonised Metso Outotec horizontal mill product line that, it says, represent the best of both legacy companies.

The Metso Outotec Premier horizontal grinding mills and Select horizontal grinding mills are designed for different customer segments and markets, and they have distinctly different features and benefits. In both lines, there are various mill solutions available for a wide range of applications.

The Premier horizontal grinding mills are customisable solutions built on state-of-the-art grinding mill technology, process expertise, and design capability, the company says. The Premier horizontal grinding mills are engineered to excel and create vast possibilities for customers and applications.

The Select horizontal grinding mills are a range of pre-engineered solutions that allow simple mill selection, simplified proposal preparation, and a streamlined order execution process. Select horizontal grinding mills feature a suite of technologies and conservative design parameters that meet or exceed operational goals, Metso Outotec claims. Select horizontal grinding mill sizes are available for applications up to 7.8 MW for both the SAG and ball mills. Rod mills are available up to 4.60 m x 6.10 m EGL.

With the introduction of the Premier and Select horizontal grinding mills, Metso Outotec continues its over 100-year legacy in grinding, Christoph Hoetzel, Head of Grinding business line at Metso Outotec, says. Both lines have their own differences and benefits but share the concepts and expertise that have made us an industry leader time and time again.

He added: As a combined company we have consistently led the way in grinding mill innovation. Weve continuously pushed mill technology in the next size increment. Currently, we have the largest operating mills in the world, and we want to lean on that legacy in taking the next steps in mill size. In addition, it is important for us to continue to be a frontrunner in the development of a more robust suite of horizontal mill technologies, providing desirable options for customers looking for quick execution with reliable technology.

The company says the Premier and Select mills come ready to be integrated with its mill reline equipment and full mining portfolio. The former includes the recently launched Mill Reline Machine (MRM), which has a capacity of 4,000 kg, as well as a broad selection of liner options, including the Megaliner.

Working with Weir Minerals, NRRI acquired an industrial-scale Enduron HPGR to carry out testing on a variety of ores with this process. This is the only large scale HPGR dedicated to research in the US, NRRI claims.

The NRRI explained: Traditional taconite pellet-making processes use a rod mill to get the rock to the consistency of coarse sand, and a ball mill to grind the rock into a fine powder. This technology is still in use on Minnesotas Iron Range by some facilities.

A taconite plant may have as many as 18 rod mills with one rod alone weighing as much as 500 Ib (227 kg). Tumbling around in the mills with the hard taconite wears away the rods and balls and need to be replaced frequently.

Tim Lundquist, Weir HPGR Manager for North America, said: NRRI has done a lot of testing for many of our projects. The proximity to the Iron Range is key, but well also bring in material from all over the US, Canada, and elsewhere when it makes sense. Our preference is to work with NRRI whenever possible due to their flexibility, expediency and expertise.

Unlike rod or ball mills, HPGRs reduce particles by compressing and crushing the feed between two counter rotating, parallel rollers with a small gap between them. This forces the rocks against each other. There are no rods or balls that need replacing and it reduces energy consumption by about 40% for certain ore types, Breneman said. It also substantially reduces water consumption compared with rod and ball mills.

Reducing energy, eliminating costly grinding media, and higher machine availability will make the Minnesota iron industry more cost competitive while also offering the opportunity to reduce greenhouse gas generation, NRRI said.

NRRI Metallurgical Engineer, Shashi Rao, Lead Researcher on HPGR-related projects at NRRI Coleraine, said: Its really helpful to the industry to have their ores tested in our large HPGR before replacing their rod or ball mills.

Were able to determine if the ore is amenable to high pressure roll crushing, identify the mineral composition, and test a variety of pressures and roll speeds. Third-party testing is very important.

This is a great example of a partnership project, Kevin Kangas, NRRI Coleraine Director, said. Weve been working on this for over two years and its exciting to have the global interest in this capability.

On average, 53% of a mine sites energy consumption is attributed to crushing and grinding ores, accounting for almost 10% of a sites production costs, according to information from Weir Minerals. NRRIs HPGR is manufactured in the Netherlands by Weir Minerals.

grinding cylpebs

grinding cylpebs

Our automatic production line for the grinding cylpebs is the unique. With stable quality, high production efficiency, high hardness, wear-resistant, the volumetric hardness of the grinding cylpebs is between 60-63HRC,the breakage is less than 0.5%. The organization of the grinding cylpebs is compact, the hardness is constant from the inner to the surface. Now has extensively used in the cement industry, the wear rate is about 30g-60g per Ton cement.

Grinding Cylpebs are made from low-alloy chilled cast iron. The molten metal leaves the furnace at approximately 1500 C and is transferred to a continuous casting machine where the selected size Cylpebs are created; by changing the moulds the full range of cylindrical media can be manufactured via one simple process. The Cylpebs are demoulded while still red hot and placed in a cooling section for several hours to relieve internal stress. Solidification takes place in seconds and is formed from the external surface inward to the centre of the media. It has been claimed that this manufacturing process contributes to the cost effectiveness of the media, by being more efficient and requiring less energy than the conventional forging method.

Because of their cylindrical geometry, Cylpebs have greater surface area and higher bulk density compared with balls of similar mass and size. Cylpebs of equal diameter and length have 14.5% greater surface area than balls of the same mass, and 9% higher bulk density than steel balls, or 12% higher than cast balls. As a result, for a given charge volume, about 25% more grinding media surface area is available for size reduction when charged with Cylpebs, but the mill would also draw more power.

henan zhengzhou mining machinery co., ltd.. supplier from china. view company

henan zhengzhou mining machinery co., ltd.. supplier from china. view company

Gas Burner is research and developing for rotary kiln that burning with single or various gas fuel, which not only ensure all the advantages and specificity of four-channel burner, but also enhance the application of burning. The burner have special structure and reasonable technical parameters, guarantee the gas fuel fully mixing with air, primary air and secondary air, which to ensure stronger heating intensity, higher burning efficiency, easier adjustment. Burner can be applicable for various metallurgy and chemical rotary kiln. Application Burning System for Rotary kiln on industry fields like Power, Chemical, Metallurgy, Building material etc. Its special advantages as follows: 1.Stability flame with regular flame shapes, no phenomenon like fluctuation and sweep kiln liner, that will outstanding extend the life time of kiln liner.  2.Good mixing performance with gas fuel, primary air and secondary air, burning abundantly, that can be enhance heating intensity and reduce primary air proportion at same time, then will improve kiln capacity and reduce energy consumption.  3.No strong eddy between flame and bowl effect produced by flame cover, can avoid appearance of temperature peak and make evenly distribution of flame temperature, then effectively protect cylinder and guard plate of kiln inlet. 4.Due to more fully mixing with combustion air and fuel gas, the burning will be more quickly and fully, which will reduce the content of CO and NOX from kiln inlet, but also better for safety operating and realizing green production.  5. The nozzle has made by special material with advantages like heat-resistance and easy to change. 6.Simple operation and adjustment. When operating, erupt speed of each air pipe can be change via adjust sectional area, then will realize goals like adjustment of flame shape and strength. Gas Burner is mainly composed with Pipe, Nozzle, Ignition device, Metal corrugated compensator, Butterfly valve, Pressure measurement and Protection layer etc. The mainly features are: 1. Pipeline From outside to inside respectively, the pipeline has consist of Axial wind channel, Swirling wind channel, Gas wind channel, central wind channel and ignition channel. And the ignition is just for igniting, so called four-channel burner. 2. Nozzle Nozzle made by special material, spray mouth sectional area of axial wind channel, swirling wind channel and gas wind channel are adjustable, so that can adjust the spray speed of each channel. The nozzle is the key part to ensure flame shape. 3.Ignition Device Located in the central wind channel, used for automatic igniting. 4.Metal Corrugated Compensator Which is the key part to connect each channel, sealing and adjust flame shape, and allowed process axial movement with connected channel.

Ore ball mill is used to separate and screening different ore minerals, separate ore tailing. It also be used for ore grinding, non-ferrous metal beneficiation, new-type building material producing. According to the discharge method, the ball mill divided to dry-type mill and wet-type mill. Our products advantages of ore ball mill: High grinding efficiency, low consumption 2. Product fineness is adjustable and uniform. 3.Low energy consumption, low wear, low operating costs. 4. Small vibration, low noise, environmental friendly 5. Liner is made of high-quality wear resistant material with high strength, wear resistance and long working life. Ore ball mill is mainly consisting of feeding device, big gear, discharge device, cylinder, diaphragm plate, hollow shaft, liner, drive device and other components. 1. The feeding device is consisting of inlet chute and screw. There are liners in the inlet chute, which can extend the working life of the feeding device. 2. There is pre-gap on the inlet hallow shaft, that can reduce the tolerance which is made of temperature changes and installation mistake to ensure the gear mesh. 3. Inside the ball mill, different parts have different liner structure, which will greatly improve the grinding efficiency. 4. Dry-type ball mill adopt sliding bearing, which is good of strength, ductility, antifriction, abrasion resistance, lubricity and thermal conductivity. It is able to meet the lubrication requirements of the hollow shaft. That is suitable for the environment of low speed and heavy load in metallurgical & ore dressing industry. 5. Wet-type ball mill adopt roller bearing, reduce useless work consumption and easy to replace.

This rotary cooler equipment can quickly cool higher-temperature of granular compound fertilizer directly Approximately to normal atmospheric temperature, which is convenient for timely and quick packing and Prevents compound fertilizer from forming block during store. It can achieve adverse Flow cooling, which can reduce pollution and improve working environment. It has many characteristics such as reasonable structure, stable run, strong adaptability etc.. Features of cooler: 1.High cooling efficiency 2.Simple structure, low rate malfunction, convenient operation, low cost of maintenance, stable operation. 3.Wide usage, can be used for the drying of different materials in powder, granule, strip, lump, large elasticity Of operation. Output is allowed to have larger fluctuations in manufacturing, but not allowed to influence the Quality of the products. 4.Easy to install and remove Application range of cooler: 1. Chemical industry: ammonium sulfate, sodium sulphide, anfu powder, ammonium nitrate, Urea, oxalic acid, bichromate potassium, pvc, nitrophosphate fertilizer, fytic acid, Phosphate compound fertilizer. 2. Food industry: glucose, salt, sugar, vitamin malted milk, granular sugar. 3. Mining products: ceramic sand , coal, coal slime, manganese ore, limestone, pyrite, peat, etc. 4. Others: iron powder, flat soybean

Performance characteristics: Bag Filter is widely applied for dust collection applications in mining industry, chemical industry, pharmaceutical industry, and the production of flour, glass, metallurgy, mine, cement, building materials, etc. The bag filter is made up of the top chest, middle chest, bottom chest, dust exhauster, and jet cleaning system. There is spray tube and air outlet at the top chest. The middle box consists of perforated plate, venturi tube, filter bag, keel, pulse valve and gas cleaning system. The bottom chest is comprised of ash bucket, air inlet, access door, ash exhauster (which is composed of rotary dust valve or spiral conveyer) It could be made of carbon steel or stainless steel upon request. Dust collector is generally used with a temperature less than 12C. Customized dust collector for usage at high temperatures (less 23C) is also available.

Advantages of magnetic separator: 1)Newest CTB series magnetic separator In China 2)Simple structure, high yield; 3)Covenient operation; 4)Granularity blow 0.5m Application of magnetic separator: Newest STB Series magnetic separator In China. This series of products is used in wet magnetic separation of materials with granularity below 3mm like magnetite, pyrrhotine, bake ore and washingtonite. It is also used for deironing materials like non-metal ores, coal and building materials. Average magnetic induction of barrel surface is 100-600mT. According to customer's demands, it can provide magnetic separation with different magnetic induction like forward flow, semi counter flow and counter flow. The products have features, such as simple structure, high yield, convenient operation and easy maintenance. Characteristics of Magnetic separator: The products have geatures, such as simple structure, high yield, convenient operation and easy maintenance.

Performance characteristics: Bag Filter is widely applied for dust collection applications in mining industry, chemical industry, pharmaceutical industry, and the production of flour, glass, metallurgy, mine, cement, building materials, etc. The bag filter is made up of the top chest, middle chest, bottom chest, dust exhauster, and jet cleaning system. There is spray tube and air outlet at the top chest. The middle box consists of perforated plate, venturi tube, filter bag, keel, pulse valve and gas cleaning system. The bottom chest is comprised of ash bucket, air inlet, access door, ash exhauster (which is composed of rotary dust valve or spiral conveyer) It could be made of carbon steel or stainless steel upon request. Dust collector is generally used with a temperature less than 120C. Customized dust collector for usage at high temperatures (less 230C) is also available.

NE Plate Chain Elevator takes advanced technology from home and abroad. This products is suitable for vertical transportation of powder, granular, and bulk materials, also for high hardness materials. The temperature of materials should not be higher than 200 degree celsius. Max. Elevation height 40m. Advantages: Wide range of elevating height. Strong capacity and small driving power. Feeding materials by automatic flowing and discharge through gravity induction. Long service life and good leak tightness. Stable and liable operation, easy maintenance. Low running cost. Bucket elevator The description of bucket elevator: Bucket elevators are designed to move flowing powders or bulk solids vertically. Bucket elevators use an endless belt or chain and have a series of buckets attached to it. Bulk material is spread into an inlet hopper. Buckets (or cups) dig into the material and convey it up and over the head sprocket/pulley, and then throw the material out a discharge throat. Bucket elevator can be divided into belt type and chain type, and the common characteristic is used for vertical transportation of powder, granulated and small lump materials. It has compact structure, small covering area, large hoisting height, good sealed performance. Tape bucket conveyor is lightweight, flexible, simple handling maintenance and low noise, which can be used to transport density 1.5 t/m3 granular or small conveying of bulk materials. Advantage of Bucket Elevator: The bucket conveyor has the advantages of big conveying capacity, high hoisting height, stable and reliable running and long service life. The machine is applicable for the crushed materials, and block materials, such as coal, cement, block, sand, clay and ore. The bucket elevator is allowed to convey materials with high temperature when armed with special circle chain tructure. Henan Zhengzhou Mining Machinery Co., Ltd. Specializes in manufacturing bucket elevator. Henan Zhengzhou Mining Machinery Co., Ltd. Designs and manufactures a wide variety of bucket elevators based on the characteristics of the bulk material and the process requirements. Designed to handle a wide variety of bulk materials from average to very free-flowing. Welcome to consult and order.

Gz series electromagnetic vibrating feeder Vibrating feeder is widely used in crushing, screening production line of mining, cement, metallurgy, building materials, chemical, mineral processing, coal mining and industries. The vibrating feeder is used to mine material from a storage silo or other material storage equipment in uniform or quantitative supply to the equipment of subject material, and is the necessary equipment to practice routine automation. Introduction of the vibrating feeder: Gz series electromagnetic vibrating feeder mainly used for mining, metallurgical, chemical, coal, machinery and other industries in to the accepting machine. Being diversification, this series of products can be specially designed and produced according to the customers' need. Furthermore, all types of electromagnetic vibration feeder can be easily implemented manual or automatic control. Henan zhengzhou mining machinery co., ltd. Is a large professional manufacturer of vibrating feeder. We can provide our customer with a good consultant and assistant, to ensure our customer's investment will be rewarded with great profit. At the same time, select the right model of equipment for customer. To meet our customer's special needs, we can design and develop customized products.

Introduction: PF Series Impact Crusher is one kind of equipment to crushing the brittle material which compression strength no more than 350 Map, the advantage including high crushing ratio, uniform product grain and low over crushing, low energy consumption, high adjustment range of product grain size and optional crushing etc, which is mainly used in mine, metallurgy, cement, construction material, coal etc for secondary crushing and fine crushing the medium hardness material. PF Series Impact Crusher is mainly used in secondary crushing, and can crush material o f crushing compression strength no more than 320 Maps. It is suitable to produce high rank highway, hydroelectric and building material and such industry as stone. (1)Even crushing function of multi-cavities which is suitable to crush hard material. (2)Reasonable design of leveling plate making the finished material finer and cubic-shaped without internal cracks. (3)Low and big feed opening make the production line easy to arrange and increase the size of feeding material. (4)Hydraulic start-up which is convenient for maintenance and replacement of wear-parts. (5)New anti-abrasive material which prolong service life of impact hammer, impact plate and liner. Advantages: 1 Large feeding port and high crushing cavity, suitable to crushing the material with high hardness and big grain size, and less powder. 2 The gap between impact plate and hammer plate is adjustable, so the discharging grain size can be effective control and the grain shape is well. 3 The hammer, impact plate and lining plate are made of new type abrasion-proof material with long working life and impact protection, wear protection. 4 Because of the function of three-stage crushing and plastic, so the crushing ratio is high, and the product shape is cube and can optional crushing. 5 The multi-function hydraulic station has many function of hydraulic discharge gap with high speed, impact plate stable vibration and the body open automatically.

Pulse Jet Bag Filter incorporates the advantages of the several kinds of bag filters and is equipped with high performance pulse valve. This kind of bag filter can be used in building material, metallurgy, chemical and refractory industries, especially the crushing, packing, clinker cooling and grinding workshops in cement production. It is also suitable for dust collection of coal grinding after some modification. Application: Building material, metallurgy, chemical and refractory industries. Output: Volume(m/h): 67300-314000 Filtration area(m2): 935-4361 Net filtration area(m2): 4205 Dust content at inlet(g/m):

mine & mill equipment cost guide - costmine

mine & mill equipment cost guide - costmine

Estimators, engineers, mine planners, appraisers and purchasing agents have relied on the Mine & Mill Equipment Cost Guide for over 20 years. Gathered directly from the source, with manufacturers, dealers and mining companies providing the most current information available.

Our Equipment Cost Guide is the most reliable source of equipment costs available to the mining industry. Estimators now have access to a convenient source of hourly operating costs as well as capital costs for virtually every piece of equipment listed in our previous guides.

Included are capital and operating costs for over 3,000 equipment items most commonly found at mines and mills around the world from 2 HP pumps to 2,000 HP trucks, from $200 slusher buckets to $30,000,000 walking draglines.

Calculate capital and hourly operating costs for virtually every equipment item needed for your project in a matter of minutes. Never guess at costs or waste time trying to locate a manufacturer to give you prices. The Mine & Mill Equipment Cost Guide has tabulated all the cost data you need in a convenient look-up format. Our capital costs are actual list prices or reliable estimations, and our operating costs are solid engineering estimates.

The Mine & Mill Equipment Cost Guide covers more than 3,000 items of mobile, portable, and stationary equipment commonly required by mining and milling operations. Select from a full range of sizes and types, with productivity information for many items.

Our equipment cost data also comes in a convenient online format. The Equipment Cost Calculator allows you to build your equipment fleet, tabulate its costs, adjust for local economics and conditions, and export the data into your own spreadsheet for further analysis.

zhengzhou jinma mining machinery co., ltd. - supplier of trough conveyors zhengzhou china

zhengzhou jinma mining machinery co., ltd. - supplier of trough conveyors zhengzhou china

Zhengzhou Jinma Mining Machinery Co., Ltd. can offer high quality Industrial Plants, Machinery & Equipment and various other China Ball Mill, Crusher, Trommel Screen, Belt Conveyor, Sand Washing Machine, Waste Sorting Plant products, as they are a recognized Manufacturer. The warehouse of Zhengzhou Jinma Mining Machinery Co., Ltd. is placed in No. 8, Dianchang Road, Zhongyuan District Zhengzhou Henan **0001 China. Zhengzhou Jinma Mining Machinery Co., Ltd. is a well-known corporation in China that is operating all over the world. Zhengzhou Jinma Mining Machinery Co., Ltd. Particulars Name: Ms. Cathy Chen Address: No. 8, Dianchang Road, Zhongyuan District Zhengzhou Henan **0001 Country: China Main Products: Ball Mill, Crusher, Trommel Screen, Belt Conveyor, Sand Washing Machine, Waste Sorting Plant Year Established: 2003 Export Focus: Australia, Canada, Chile, Malaysia, United Kingdom Estimated Employees: Approx 40 Employees Registered Capital: USD ***2537.***4328 Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

Address: No. 8, Dianchang Road, Zhongyuan District Zhengzhou Henan **0001 Country: China Main Products: Ball Mill, Crusher, Trommel Screen, Belt Conveyor, Sand Washing Machine, Waste Sorting Plant Year Established: 2003 Export Focus: Australia, Canada, Chile, Malaysia, United Kingdom Estimated Employees: Approx 40 Employees Registered Capital: USD ***2537.***4328 Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

Country: China Main Products: Ball Mill, Crusher, Trommel Screen, Belt Conveyor, Sand Washing Machine, Waste Sorting Plant Year Established: 2003 Export Focus: Australia, Canada, Chile, Malaysia, United Kingdom Estimated Employees: Approx 40 Employees Registered Capital: USD ***2537.***4328 Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

Main Products: Ball Mill, Crusher, Trommel Screen, Belt Conveyor, Sand Washing Machine, Waste Sorting Plant Year Established: 2003 Export Focus: Australia, Canada, Chile, Malaysia, United Kingdom Estimated Employees: Approx 40 Employees Registered Capital: USD ***2537.***4328 Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

Year Established: 2003 Export Focus: Australia, Canada, Chile, Malaysia, United Kingdom Estimated Employees: Approx 40 Employees Registered Capital: USD ***2537.***4328 Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

Export Focus: Australia, Canada, Chile, Malaysia, United Kingdom Estimated Employees: Approx 40 Employees Registered Capital: USD ***2537.***4328 Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

Estimated Employees: Approx 40 Employees Registered Capital: USD ***2537.***4328 Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

Registered Capital: USD ***2537.***4328 Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

Ownership Status: Limited Liability Company (Invested Or Controlled Export Percentage: 41% - 50% Factory Size: 50, ***-100, 000 square meters Production Lines: 9 Research Team Size: 11 - 50 People Contract Services: Design Service Offered Contact Us

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laboratory rod mill - jxsc machine

laboratory rod mill - jxsc machine

Introduction: XMB Laboratory Rod Mill is an efficient laboratory grinder for wet grinding and dry grinding of ore or other materials. Steel balls can be used as a grinding medium instead of steel rods. In rod grinding operation, particle sizes of the final product are relatively uniform and ore overriding can be eliminated. Generally speaking, lab rod mill is commonly used as a grinder for the mineral feasibility study and for heavy concentrate reduction. Rod Mills is suitable for laboratory wet grinding of fine ore or other material flow. Rod ball mill has the advantages of high efficiency, large grinding capacity and uniform particle size. Crushing and grinding are two major operations for the separation of ore monomer, and mineral grinding is the last operation before ore beneficiation. At present, according to different grinding media, grinding equipment can be divided into rod mill, ball mill, gravel mill, self-mill and so on. Ball mill laboratory type Rod Mill, which has a long history and a mature manufacturing technology, is widely used in production practice and laboratory.

The Rod Mill can be used for wet grinding of ore in the laboratory and grinding of artificial heavy sand and ore in metallurgy, building materials, chemical industry, light industry, coal, water and electricity, agriculture and geological experimental work. Compared with the original mill of the same type, the mill has the following advantages: 1. The mill barrel has the advantages of high rotating speed, smooth inner lining, high grinding efficiency, the small allowable filling rate of grinding media, and more grinding media, which greatly enhances the grinding and stripping effect. 2. The structure of the equipment is compact, the transmission mechanism is simple and reliable, the configuration is balanced and reasonable, the operation is portable and safe, the ore discharge is convenient, fast and the working noise is small. 3. The fine material has uniform particle size composition and a small degree of over-grinding, which is helpful to improve the quality of the experimental work of ore washability. 4 the machine structure is compact, the transmission mechanism is simple, reliable, the lubrication is few, the maintenance is simple; the use installs do not need the special foundation or the worktable, the movement is convenient, the occupation area is small.

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