What effect does the hardness of the ore have on the processing capacity of the mill?

The hardness of the ore, which reflects the mineral composition of the ore itself and its physical and mechanical properties. The ore is dense, the crystal is small, and the ore with high hardness is more difficult to grind. Therefore, in the process of grinding, such ore requires a long grinding time to ensure the required fineness of grinding, but generally affects the processing capacity of the mill. The ore with a small hardness or a haircut is easy to be ground, and the processing capacity per unit volume of the mill is also high.