The crushing operation is carried out in two stages, crushing and grinding. Mineral crushing operations are carried out in dry form in cement factories, and grinding operations are carried out in wet and dry form. No matter which device is chosen, the crushing methods are the same in all operations, both dry and wet. In general, the grinding method in all industries and for all materials is divided into three main forms.

▪️ Wear ▪️ Cleavage Crushing These three methods generally include the process of converting large minerals into small components. "wear" The first step in the operation is cutting. This mechanism is called Abrasion or Attrition. In this mechanism, due to the contact of two objects at the same point, grinding action is formed. The result of this point pressure is two products. ▪️ Fine grain ▪️ Coarse-grained

The wear mechanism is used in the industry to produce micronized powder. In the wear mechanism, we decrease or increase the amount of wear by changing the speed or number of rotations of the axle. The type of Asia is effective in the amount of abrasion. Abrasion is mostly used for crushing brittle materials such as limestone and coal. The amount of energy in the abrasion process is the lowest amount of energy in grinding methods.

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