Vertical Coal Mill

Chaeng Vertical Roller Mill has simple process, compact structure, product fineness of 80μmR 3%, with steady and average product fineness.
Application : Cement Plant, Clinker Grinding Unit, Mining
Capacity : 5-70 t/h
Motor Power : 110-1400 kw
Fineness : 80 μmR 3%

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  • Environmental Friendly:With small vibration, low noise, and the overall sealing, the system works under negative pressure, so there is no dust going out. (It meets the requirements of the state environmental protection.)
  • High Drying Ability:As the hot air inside contacts directly with the material, drying ability is higher, and it saves energy. By regulating the air temperature, it can meet requirements with different humidity.
  • Simple and Reliable Operation:Firstly, it is equipped with automatic control systems, so remote control makes it easy to operate. Second, it is equipped with one device, which prevents the roller from contacting with the liner directly, and avoids the destructive impact and severe vibration.

Applied material

coal fluorite, barite, limestone, ceramic, slag, etc.

coal fluorite.jpg  slag.jpg limestone.jpg rock.jpg

Product Profile

Vertical Coal Mill, also known as coal mill, for superfine grinding of raw coal, soft coal specifically for cement, power plant, steel mill and other fields. Its special design structure and production process creates the higher production efficiency with lower energy consumption, less dust, lower noise than ball mill, which meets national standard of energy saving industry. Chaeng’s Vertical Coal Mill technology reaches the international advanced level, and its manufacturing quality reaches the leading domestic level, and is the preferred equipment for grinding raw coal and soft coal.

In general, coal pulverisers are designed to achieve the maximum rated capacity grinding a design coal with a grindability of 55 HGI and 8-12 per cent moisture and achieving a discharge fineness of 70 per cent passing a 200 mesh screen (74 micron) and 99.5 per cent passing a 50 mesh screen. Variation of the coal hardness and/or moisture content will effect, up or down, the discharge capacity or the discharge fineness.


Process flow

1. Raw coal from the yard are conveyed through screen to belt conveyors. The raw coals after iron removal by electromagnetic separator are put into the warehouse for storage.

2. After grinding system has started, please turn on the rod valve in the bottom of raw coal storage, and start sealing measuring belt to coal mill, then raw coal will be dryed and ground in the vertical coal mill.

3. The mixture of hot air or waste gas of cement production line are sucked into Vertical Coal Mill, under blower’s function. After complete heat exchange with ground coal, the coal powder are brought to separator for separation. The unqualified coarse coal powder falls to the grinding table for regrinding. The qualified coal powder will be collected with the airflow into the anti-explosion impulsive dust collector, through the grid wheel are discharged into pulverized coal storage.

4. The debris of raw coal, such as coal gangue, metal block, etc. will be discharged through the wind ring, discharge hole.



Model Grinding Diameter (mm) Roller Diameter (mm) Roller Number (n) Motor (kW) Output (t/h)
GRMC12.21 1200 900 2 110 5
GRMC16.21 1600 1000 2 250 12
GRMC18.21 1800 1120 2 330 18
GRMC20.31 2000 1250 3 430 20
GRMC22.31 2200 1400 3 590 30
GRMC23.31 2300 1450 3 640 35
GRMC26.31 2600 1600 3 810 44
GRMC28.31 2800 1750 3 1000 55
GRMC30.31 3000 1900 3 1250 65
GRMC35.31 3500 1900 3 1400 70

Note: Mill spectral pattern benchmark

  1. Material medium friction HGI=55~60;
  2. Material moisture max 10%
  3. Finished product granularity 80mmR3%;
  4. Finished product moisture 0.5~1.0%;
  5. The concrete mill installed power and technology parameter will be adjusted appropriately basing on the actual material property and the requirements of owner.

Vertical coal mills are widely used in the concrete and mining fields,for example, Cement Plant, Clinker Grinding Unit, Thermal Power Plant.Cement Plant.

Pre-sales Service:

The wide product range enables us to provide our customers with stand-alone machines or complete processing plants. Based on our customers’ request and budget, our experts make efficient, reliable solutions. Following customers’ order we produce strictly, what’s more, before placing the order every customer has the chance to visit XinXiang Great Wall (Chaeng) working machines or complete plant in the site.

To ease the trip for every visitor to China, in particular the first-time visitor, we provide FOR FREE all relevant visitor-friendly services including invitation letter preparation, hotel reservation, airport pick-up, incity transportation, and sightseeing guide, etc.


After-sales Service:

Experienced technicians guidance is available on the phone, and on the internet. One or more engineers will be dispatched to the quarry site to help install the customers’ plants. Necessary training about machine daily maintenance to local workers is provided also.

After-Sales department is made of well-trained employees and installation engineers, the installation engineers are special and professional members of XinXiang Great Wall (Chaeng), they are now strategically located home and abroad, working for our customers.


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