The Application and Working Process of Grinding Mill

Grinding mill is also called ball grinding mill, industrial grinding machines and grinding miller. Grinding mill grinds material by rotating a cylinder with steelgrinding 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. If the peripheral speed of the mill is too great, it begins to act like a centrifuge and the balls do not fall back mini rock crusher, but stay on the perimeter of the mill. The point where the coal crusher becomes a centrifuge is called the 'Critical Speed', and Grinding mills usually operate at 65% to 75% of the critical speed. With continuous innovation and development in technology, Daswell has developed micro powder mill and high productivity roller millrecently.

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Minerals are firstly crushed by jaw crusher until they are crushed to suitable sizes. They are then equally fed to a ball mill machine with a hoister and a feeder. Later, they are further crushed and milled in the grinding ball. Finally, fine minerals are classified by a spiral classifier with the principle that solid particles sink at different speeds in liquid.

Coal ash (or sand, stone powder) are conveyed to grinding ball through electric vibrating feeder and rubber belt conveyor. Grinded coal ash (or sand, stone powder) is delivered to slurry tank for storage through a coal ash pump.