Cement Vertical Roller Mill

Cement Vertical roller mill (VRM) is mainly used to grind cement clinker into fine powder during cement production, which can also be used to grind various materials such as calcite, marble, limestone, coarse whiting, talc, barite and dolomite etc.

Application : Cement Plant, Clinker Grinding Unit, Thermal Power Plant
Capacity : 50-250 t/h
Motor Power : 1250-5300kw
Fineness : 3300-3800 cm²/g

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  • 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.
  • Stability of Product Quality As the material stays in the VRM for a short time, it is easy to detect and control the product particle size and chemical composition, to reduce duplication of milling, stable product quality.
  • Maintenance Convenience By repairing fuel tank, rotating the arm, it is fast to replace the roller sleeve, and liner, and reduce the downtime loss.
  • Vertical Roller Mill has a Low Investment Cost

Applied material:

Gypsum, slag, limestone, dolomite,rock,ect.

 

Gypsum stone.jpg  limestone.jpg  rock.jpg slag.jpg 


working principle

This cement mill is widely used in the grinding of cement raw meal, slag(GGBS plant), cement clinker, raw coal and other raw materials. It gathers grinding, drying and powder selecting as a whole, with high grinding efficiency and high drying capacity ( the maximum handling material moisture is up to 20% ). The vertical mill adopts dynamic powder selecting device, which comes with high powder-selecting efficiency and convenient adjustment of fineness.After crushed by crusher, the large materials become small ones and are sent to storage hopper by elevator, and then evenly sent to the upper distribution plate of the turn plate by vibrating feeder and sloping feeding pipe.The grinding disc is driving by motor through reducer.

The material falls to grinding disc from the feed opening. The materials are driven to the edge of disc by the centrifugal force and crushed into fine powders by rollers. Then, the hot air from the nozzle take the fine powder to high effiency classsifer.

The qualified powder are taken by the air to the powder collector to be collected, while the unqualified powder are sent back for regrinding.

vertical mill grinding processing.jpg


Feature

1. Technique and technology is mature and stable

Great Wall Company's GRMK series Vertical cement  mill in the production of cement specific surface area up to 3800 cm²/ g with stable and reliable quality, it already have been the ability completely to replace tube mill.

2. Reducing the power consumption of cement clinker preparation effectively

According to the display of pulverized coal measured data, it can be saving electricity above 30% use of vertical roller mill production per ton cement clinker than traditional ball mill, and the power saving effect is very remarkable.

Vertical mill energy-saving contrast.jpg

3. Stable, high-efficiency and environmental protection

There is a low vibration and noise in overall system, and equipment with whole sealing, system working under negative pressure with no dust overflow, clean environment. Therefore, cement vertical roller mill meets the national environmental protection requirements. With working mechanism changing, cement vertical roller mill can be reduced friction and improved service life.

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 Specifications

 

Model Grinding Table Diameter (mm) Roller Diameter (mm) Roller Number (n) Motor (kw) Output (t/h)
GRMK30.31 3,000 1,600 3 1250 55~60
GRMK32.31 3,200 1,700 3 1600 65~80
GRMK35.41 3,500 1,800 4 1800 85~100
GRMK40.41 4,000 1,900 4 2500 115~125
GRMK43.41 4,300 2,120 4 3000 135~145
GRMK46.41 4,600 2,240 4 3350 150~160
GRMK48.41 4,800 2,240 4 3550 170~180
GRMK50.41 5,000 2,360 4 3900 190~200
GRMK53.41 5,300 2,500 4 4600 210~230
GRMK56.61 5,600 2,500 6 5300 235~250

 

 

Note: Mill spectral pattern benchmark

  1. The cement standard: PC42.5 specific surface: 3300~3800cm² /g;
  2. Confirm the compounding ingredient at the time of type selection; choose the lower limit when friction is not well;
  3. Can choose 2 roll mode as per situation of the user.

Cement Vertical roller mill (VRM) is mainly used to grind cement clinker into fine powder during cement production.

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.

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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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