Grinding is the continuation of the ore crushing process. In the ore beneficiation industry, other than a few types of useful sand ores with high single separation degree that do not need grinding, powder grinding is almost indispensable, and the wet type metallurgical plants, cement plants and many other plants that processing non-metallic useful minerals also need powder grinding.
In the ore grinding process, the most widely used machine is cylinder ore grinding mill whose grinding process goes like this: materials are sent to the continuously rotating cylinder in which there are a certain amount of grinding bodies with different shapes, like balls, rods, short columns, large ores and gravels. When the barrel rotates with a certain speed, these grinding media will be pushed to produce impacting and grinding force to grind the materials.
For this reason, the crushing force of cylinder grinding mill comes from the external force that are exercised to the grinding body and transmit the crushing force to the materials to be grinded, and the grinding body is called grinding media and this grinding process is called media grinding.
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