Crushing and grinding is not only an important step in beneficiation plant, but also an indispensable link in building materials, metallurgy, chemical, coal, ceramics and food production line. In crushing and grinding, the consumption of power, steel and raw materials are enormous, for instance, cement grinding operations accounted for about 30% of production costs, and grinding machine power consumption accounts for about 70% of total electricity consumption; the average power consumption of grinding crude ore is about 16kw/h in non-ferrous metal ore concentrator, which accounts for about 40% of the total power consumption, and the steel average consumption is about 1.5kg/t. Therefore, to seek ways to improve the process of crushing, recondition the equipment’s operation character, develop novel and efficient equipment, reduce the power consumption of smashing is becoming the goal of many researchers in many fields and gaining the world’s attention.

Different crushing and grinding stages use different equipment. For example, primary crushing stage using jaw crusher or rotary crusher, secondary crushing stage using standard cone crusher and short head cone crusher, primary grinding stage using grid ball mill, secondary grinding stage using overflow ball mill, because certain devices can only work efficiently in the appropriate size range. I reality production, the required crushing and grinding segments should be decided according to the nature of the ore and the desired final product size.

Crushers and screening equipment, ball mill and classifier are always working together, because only in this way can we control the particle size of crushing and grinding, isolate the qualified particles early, in order to reduce the unnecessary crushing. The different combination of the crushing and grinding equipment forms a variety of comminution processes.