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    10 t/h limestone grinding powder production line in Nanchuan, Chongqing With the increasing of environmental protection problems, the government has adopted more strict measures to rectify the...
    Successful Jaw Crusher Consignment to Indonesia 2017.11.10 is a red letter day on which PEX250*1200 jaw crusher prepared for our Indonesia client has been successfully ...
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    Analysis on Development Prospect of Raymond Mill in Calcium Silicate Board Market Speaking of the development prospect of Raymond mill in calcium silicate board market, someone might show doubt about th...
    Industrial milling machines enters into agriculture fertilizer market and contributes to agricultura Industrial milling machines take important position of production and process in agricultural development and are indisp...
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    Which mill has higher investment values and good development prospect? Engineering project investment is not a little thing no matter for the individual or the enterprise and it needs to take...
    How much is industrial grinding machine and what are the specifications of stone grinding machines? According to grinding machine types, industrial grinding machine is divided into Raymond mill, high-pressure suspension ...
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    Commonly used mine crushing equipment - jaw crusher Jaw crusher(is one of the most common crushing equipment and one of the most practical equipment in the process of mine ...
    Which kind of crusher has a capacity of 400t/h for stones? Which crusher has a capacity of 400t/h for stones? Capacity of 400 t/h is relatively high for stone crushing and ordinar...
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    Project DackgroundBauxite is a kind of high quality fireproof material, it can also be used for aluminum smelting, and i... MORE>>
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    Project BackgroundIn Decmeber, 2016, we made a 200 t/h basalt crushing production line for a customer in India. The out... MORE>>
  • Metallic Mineral
    Project BackgroundThe process of copper beneficiation line is relatively simple. Raw materials are crushed before the gr... MORE>>
  • Building Materials
    Project BackgroundRiver pebble is a natural stone taken from tore which is formed by uplifted ancient river bed through ... MORE>>
  • Industrial Grinding
    Limestone Product IntroductionLimestone’s main component is calcium carbonate(CaCO₃)and its hardness is 3-4 in Mohs. Lime and lime...
    Calcite Product Introduction   Calcite is widely distributed. Its hardness is 2.7~3.0, and the weight is 2.6~2.8. It’s...
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    Pebble Product Introduction  Pebble is the product of yellow sand mining. It is named after a goose egg. The pebbles,...
    Coal Gangue Product IntroductionCoal gangue is a solid waste discharged from the process of coal mining and coal washing. It is a da...
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    Gold ore Product Introduction Gold ore is a mineral that contains gold or gold compounds. Gold ore resources in China are ab...
    Molybdenum Ore Product Introduction Molybdenum metal is a very important metal, which is known as war metal. With high strength, h...
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    Construction waste Product Introduction Construction waste refers to waste residue, scrap metal, crushed stone, waste residue in morta...
    Machine-made Sand Product Introduction    The demand of sand in China is more than 10 billion tons, and the industry scale is ab...
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Ultrafine Mill

Ultrafine Mill


【Feed Size】 <  25mm

【Finished Product Size】 400-1250mesh

【Capacity】 25 - 6000kg/h

Raymond mill is a high-efficiency mill replacing ball mill to process mineral powders, featured by strong systematicness, high screening rate, steady transmission, good abrasion resistance, convenient maintenance, etc. Thus Raymond mill has been extensively used to grind minerals in fields of mining, building material, metallurgy and chemistry and so on.

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Ultrafine Mill Wide application and high granularity

It can grind multiple materials whose hardness is under 6 in Mosh and its final granularity has been greatly improved with help of the high pressure springs


Ultrafine Mill High-efficiency and energy-saving with faster yield


Compared to jet mill, it has low systemic energy consumption, low investment, high benefit and fast payback.



Ultrafine Mill High-level automation and environmental protection

The mill creates a system itself with less production processes, and materials under 25mm can be directly processed by the mill; it’s pollution-free and completely reaches national standards on dust removing; its grinding device has good sealing performance.


Ultrafine Mill

Ultrafine Mill


Ultrafine Mill

 Brief Introduction

Ultrafine mill also known as ultra-fine grinding mill or ultrafine pulverizer is designed and developed based on Raymond mill through long-term practical experience by Zhengzhou General Mining Machinery Co., Ltd. The ultrafine mill adopts advanced fineness grading technology and also conforms to hydromechanics principle, which is comparable to jet mill and overcomes jet mill’s high-cost problem as well as ultrafine powder grading problem. The ultrafine mill with high capacity and low energy consumption not only achieves national standard but also has surged to global advanced levels receiving good comments from various industries. And it has been widely used to grind and process materials in mining, building material, metallurgy and chemistry industries, such as calcium carbonate grinding, plaster processing, power plant desulphurization, non-metallic powder making and coal powder making, etc.

The ultrafine mill is usually applicable fro materials with Mohs hardness under 6 including kaolin, limestone, calcite, marble, barite, heavy calcium, gypsum, iron oxide, iron oxide green, aluminum hydroxide, pigments, clay, coal, activated carbon, feldspar, talc, dolomite, carbon black, clay, etc.

Ultrafine Mill



Ultrafine Mill

 Structural Composition

The mill creates a system itself with less production processes, and materials under 25mm can be directly processed by the mill; it’s pollution-free and completely reaches national standards on dust removing; its grinding device has good sealing performance.


Ultrafine Mill Working Principles

Materials are delivered to hopper by elevator after being crushed; then they are transmitted uniformly to the host grinding chamber by vibrating feeder; and then they are scooped up to the gasp between grinding rollers and grinding ring by blade to be ground; at the same time the blower is blowing air into the grinding chamber and blows powders up to the analyzer for winnowing, the unqualified powders fall back to the grinding chamber for further grinding while the qualified powders enters into the cyclone separator along the air currents to be collected as the final products. The materials usually contains some water and they would release some moisture when ground and due to not absolute tight sealing of the whole duct system, outside air would be inhaled in making the system air volume increasing, and in order to ensure the mill works in condition of negative pressure, excessive airflow will go into bag-type dust remover to be discharged after being purified.

In the grinding chamber of ultrafine mill, grinding roller assembly is suspended in the hanger through transverse carrying bearing while the hanger, the main bearing and the blade carrier are connected fixedly; pressure spring is on the outer end of the boom in bearing room, making the roller tightly against the ring with transverse bearing as a fulcrum; when the motor drives the main bearing to rotate through transmission devices, the blade and the grinding roller rotate simultaneously and the rollers also spin as they are rotating; the analyzer impellers are also driven to rotate by motor through transmission device and the impeller’s rotating speed controls the fineness of the outlet powders.


Almost 15 years service experience and thousands of user’s requirement make General Mining Machinery

know well about your concern and requirement and offer you more specific resolution.

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