Coal grinding mill for sale

Coal grinding mill grinds material by rotating a cylinder with steel grinding balls, causing the balls to fall back into the cylinder and onto the material to be ground. The rotation is usually between 4 to 20 revolutions per minute, depending upon the diameter of the mill. The larger the diameter, the slower the rotation is. If the peripheral speed of the coal grinding mill is too great, it begins to act like a centrifuge and the balls do not fall back, but stay on the perimeter of the mill. The point where the coal grinding mill becomes a centrifuge is called the "Critical Speed", and coal grinding mills usually operate at 65% to 75% of the critical speed.

Coal grinding mill features

Our coal grinding mills occupy the highlights that other coal grinding equipment does not have.

1. No auxiliary drive needed;
2. Compact design minimizes space requirement;
3. Optimized air distribution reduces pressure loss;
4. Dynamic rotary separator ensures high-grade end product;
5. High-efficiency mill grinding coal, lignite pet coke, anthracite etc;
6. Large rollers permit coarser feed and ensure a thick grinding bed;
7. High flexibility ensures stable operation, even during low production load;
8. Segmented roller and table wear parts prolong service life and facilitate installation.

Coal grinding mills working principles

The raw coal enters the mill via an air tight feed screw and is discharged onto the center of the rotating grinding table. The rotation of the table accelerates the flow of material towards the grinding track where the coal is ground between the table and the three rollers. The coal then continues over the dam ring and is entrained in the hot drying air that enters the mill house through the nozzle ring. The air lifts the coarser particles back onto the grinding table and sweeps the finer particles up to the separator that lets the final product proceed to the mill outlet while returning the coarse fraction to the table for further grinding. Having left the mill at the top, the final product continues with the air to a bag filter where it is collected.

Coal grinding mill application

Coal grinding mills are key equipment to grind all kinds of ores and other materials which is widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc.

Coal grinding mill supplier

DSMAC, as a professional mining equipment manufacturer, offers all coal crushers types, not only coal grinding mill, but also all models of ring hammer coal crusher, roll coal crusher, hammer coal crusher, jaw coal crusher,impact type coal crusher and so on. Apart from various coal crusher machine, DSMAC also mainly specializes in coal feeder and coal screen , mobile coal crusher, coal crushing plant with different capacities, and has a branch specializing in coal crusher parts manufacture and export.

DSMAC coal crusher plant can also use in other stone crushing plant, such as granite, limestone, basalt, river stone, quartz stone, etc.

source:/coal-crusher-types/coal-grinding-mill.html
/coal-crusher-types/coal-grinding-mill.html