Coal Mill

Introduction of Coal Mill

Coal mill is the coal into a coal crushing and mechanical, it is an important auxiliary equipment in pulverized coal boiler. Coal grinding process is the process of coal was broken and its surface area increased. To add more surface area, must overcome the binding force between molecules and solids, energy consumption. The coal is ground into pulverized coal in the coal grinding machine, mainly is carries on through the crush, crush and grind in three ways. The crushing process energy consumption of the province. Trituration process most expend energy. All kinds of coal mill are both in the milling process of the above two or three way, but in what is considered the main types of coal mill and.

Coal Mill type many, the coal working parts by grinding speed can be divided into three types, namely low speed coal grinding machine, medium speed coal mill and high speed coal mill.

Coal mill machine working principle

This machine is a horizontal cylinder rotating device, outer gear, two warehouses, lattice type coal mill. Material from the feed devicefeedair evenly into the mill screw shaft first warehouse, the warehouse has stepped lining board or corrugated liner, built in different specifications of steel balls, rotating cylinder pushes the ball to a certain height to generate centrifugal force after the fall, the material produces severe impact and abrasive. Materials in the first position to coarse grinding, the board by the single compartment into the second warehouse, the warehouse linedwith flat lining, steel ball inside, the material to further grinding. Powder through the discharge grate discharge, finish grinding operation.

Shanghai zenith coal mill machine

Shanghai zenith coal mill machine is the material being broken, and then smash the key equipment. Coal mill widely used in cement, silicate products, new building materials, refractory materials, chemical fertilizer, black and non-ferrous metal processing, such as glass ceramics industry production, various ores and other materials may be grinding of dry or wet grinding.

Technical data

Coal Mill
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