Vertical Roller Mill Introduction

LM series vertical grinding mill is the newest grinding machine, which integrates the advanced international technology and years of mill-producing experience . It is an ideal equipment that integrates crushing, drying, grinding and grading conveyor all together.

LM series vertical grinding machine can be widely used in cement making, power , metallurgy, chemical and non- metalliferous ore industries. It is used to grind lumpy, granular and powdery materials to the required size.

vertical roller mill

Vertical Coal Mill Features and Benefits :

The whole plant is a vertical structure of strong systematic characteristic, so it occupies small area. From crushing of raw material to grinding and packing is an independent production system. Compared with other milling plants, its passing ratio achieves 99%, this is what other mill can not reach. Driving system of main frame adopts airtight gearing and pulley, drives smoothly and operates reliably. The electric control system is centralized controlled, so the automaticity is high, no people are needed in the operating room.

  • Working Principle
  • Specifications
  • Inquiry

The motor drives the grinding table through decelerator. The materials fall down the center of grinding table from feed opening. At the same time, hot air comes into the mill from the air inlet. Due to the centrifugal force, materials move to the edge of the grinding table. The materials are pulverized by the roller when by pass of the groove on the grinding table. The crushed materials are brought up by vane high-speed airstream, the larger particles fall down to the grinding table for regrinding. When the materials in the airstream pass the separator on the top of the mill , the coarse powder fall down the grinding table for regrinding under the function of rotation rotor. The fine powder comes out with the airstream , and is gathered by the dust catcher. The materials content with moisture will be dried when they meet the hot airstream. Through adjusting the temperature of the hot airstream, it can meet different material’s requirement, and also through adjusting separator , it can reach proper fineness of materials.

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

If you want information about related products as soon as possible, Please click here , we have 24h online service for you.