Coal Mill

Coal Mill

Coal mill changed the original ball mill structure, make the body, chassis integration, installation can be one-time hanging on the base plane. The spindle to bear with the spherical roller bearings, double row to heart can reduce energy consumption by 30% from the original grid type forced discharging to overflow discharge control, can improve the grinding granularity, can increase the rate of 15-20%.

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Coal mill is widely used at home and abroad on the basis of advanced technology, combined with years of experience in all kinds of mill production, design and development of advanced grinding equipment. Its widely used, high grinding efficiency, low power consumption, drying ability is big, the grinding particle size is big, product fineness is easy to adjust, chemical stability, no in the operation of the steel ball impact and no direct contact between metals, low noise, wear small, grinding inside the separator, without setting up classifier, small floor space, construction area of the corresponding small, roller can break out the closed, convenient maintenance, etc.


  • 1. High grinding efficiency, vertical rollers adopt and material bed rolling grinding materials, low energy consumption, power consumption of grinding system 40-50% lower than that of ball mill system, and with the increase of moisture content of raw material, energy saving effect is more significant.
  • 2. The loss of metal small, rollers and lining board with special material, long service life, reduce the operation cost, high efficiency
  • 3. With the installation of external circulation, can further reduce power consumption.
  • 4. Into the grinding particle size is big, can amount to about 5% of the roller diameter, average of 40 ~ 100 millimeter, so large and medium-sized vertical mill can eliminate the secondary crushing.
  • 5. Vertical mill process simple, and the ball mill system area can reduce about 50%, compared with construction costs by around 70%, the building area is small, takes up less space.
  • 6. Vertical mill crushing, drying, grinding, sorting conveyor at an organic whole, the system is simple, compact layout. Can open to decorate, make construction cost is low.
  • 7. Equipped with automatic control device, which can realize remote control, simple operation.
  • 8. To prevent direct contact between roller and mill lining board device, to avoid fragmentation violent vibration.

Technical data

Model specification (m) Capacity (t/h) Rotating speed (r/min) Transmission type Motor Reducer Weight(t)
Remark Model Power(kw) Model Reduction ratio
φ2.2×3 5-6 22 Edge YR355M-8 185 ZD50 5 37  
φ2.2×4.4 8-9 22 Edge YR355M-6 220 ZDH50 6.3 46  
φ2.4×4.75 14 20.4 Edge YR400-8 280 ZD60 4.5 54  
φ2.4×4+2 10-12 20.2 Edge YRKK450-8 250 ZDY35580 4.5 59  
φ2.4×4.5+2 16-17 20.4 Edge YR4005-8 280 JDX-450 4.5 76  
φ2.6×4.8+2 9-10 20 Edge YRKK5002-8 400 RZD75 4.5 91  
φ2.6×5.25+2.25 13-14 19.7 Edge YRKK500-8 400 ZDY400-4.5-11 4.5 98  
φ2.8×5+3 8-10 18.9 Edge JRQ1512-10 480 MCD-70 3.55 107  
φ3×9 18-20 18.3 Edge YBKK5560-8 630 MBY560 5 124  
φ3.2×9.5 28 17 Edge YR800-8/1180 800 NFM710 6.3 140  
φ3.4×5.25+2.8 30 17.47 Edge YRKK-56-6 900 JDX-800 7.157 169 Exclude main transmission
φ3.8×7.25+3.5 41-43 16.7 Edge YR630-8 1400 MBY800 5.6 220  

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