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Vertical roller mill

Introduction to Vertical roller mill
Vertical Roller Mill is a new kind of large-scale grinding mill which is designed specially to solve the problems of low capacity and high consumption of industry mills. With decades of years’ research, Vertical Roller Mill is designed and manufactured based on our advanced design idea.Now it has found its extensive application in the mining ,chemistry, non-metallurgy and other hundreds of industries.
Working Principle of Vertical roller mill
1)The motor dives the grinding table to turn through the speed reducer. At the same time, hot air comes into the roller mill from the air inlet. The materials fall down the centre of grinding table from the feeder.
2)Because of the centrifugal force, the materials move to the edge of grinding table from the centre.
3).The materials are crushed by the grinding roller when they passes the groove on the grinding table. The crusher materials continue to move to the edge of the grinding table until they are taken away by the airstream. Then the bigger materials fall down the grinding table and the process of crushing continues. When the materials in the airstream pass the separator on the top of the mill, the materials fall down the grinding table from the taper filler under the force of guide leaf blade. The fine powder comes out with the airstream, and is gathered by the dust catcher of the system. The powder gathered is the final product of roller mill.
4) In the process of the contact of airstream , the materials are dried to meet the clients’ need at the proper moisture. Through the adjustment of the angle between the separator and the leaf of wind’s direction (not suitable to the small type of vertical mill), and also the speed of the separator rotor, it can reach the proper fineness of the materials.
Main Structures of Vertical roller mill
It mainly consists of : powder-collector,grinding roller ,pressure equipment,grinding plate ,decelerator,electric motor,and and the machine shell ,etc.
Technical Advantages of Vertical roller mill
1)The time materials stayin the machine body is short ,which can reduce the repeating grinding and have a stable quality.
2)the adjustable dry air temoeture,and high drying ability ,energy-saving.
3)the non-direct contacting equipment installed on the roller shells and the grinding liner can avoid the damage compact and strong shaking.
4)the machine merges the crushing ,drying,grinding ,and classifying into a single whole.
5) the grinding roller and the liner adopts the high-quality materials ,which can reduce the abrasion and increase the service life.
6)the whole seal of the equipment makes the system work in a negative environment with no dust leaking and a clean environment.
Technical data of CLM series roller mill(Coal or Cement Industry):
Model LM130K LM150K LM170K LM190K LM220K LM240K
Turnplate diameter (mm) 1300 1500 1700 1900 2200 2400
Capacity (t/h) 10~30 13~40 18~57 23~72 36~114 41~128
Final product size μm 170~45 170~45 170~45 170~45 170~45 170~45
mesh 80~325 80~325 80~325 80~325 80~325 80~325
Final product water percentage ≤1% ≤1% ≤1% ≤1% ≤1% ≤1%
Max. input size (mm) <38 <40 <42 <45 <50 <55
Best water percentage of raw material <4% <4% <4% <4% <4% <4%
Drying needed if water percentage is more than <15% <15% <15% <15% <15% <15%
Input wind temperature (℃) <350 <350 <350 <350 <350 <350
Output wind temperature (℃) 70~95 70~95 70~95 70~95 70~95 70~95
Main motor power (KW) 185~220 250~280 355~400 450~500 710~800 800~900
Overall dimension L (mm) 3500 4200 4700 8500 10200 11700
W (mm) 3400 3900 4500 5600 6700 7700
H (mm) 5800 7100 8300 8800 10600 12200
Weight (t) 48 75 90 100 125 160

Vertical Coal Mill Model and Technical Date:

Model LM130M LM150M LM170M LM190M LM220M LM240M
Turnplate diameter (mm) 1300 1500 1700 1900 2200 2400
Capacity (t/h) 10~15 16~22 20~28 26~35 35~45 40~50
Coal powder fineness (R0.08) <15% <15% <15% <15% <15% <15%
Coal powder water percentage <1% <1% <1% <1% <1% <1%
Max. input size (mm) <38 <40 <42 <45 <50 <55
Input material water percentage <15% <15% <15% <15% <15% <15%
Input wind temperature (℃) <350 <350 <350 <350 <350 <350
Output wind temperature (℃) 75~95 75~95 75~95 75~95 75~95 75~95
Raw coal Hardgrove grindability index (HGI) >55 >55 >55 >55 >55 >55
Main motor power (KW) 185 250 315 400 500 560
Overall dimension L (mm) 3500 4200 4700 8500 10200 11700
W (mm) 3400 3900 4500 5600 6700 7700
H (mm) 5800 7100 8300 8800 10600 12200
Weight(t) 46 75 94 100 122 157

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