Mining crusher equipment in the form of very large, their main forces crushed material can be broadly classified into extrusion type, impact type , shear-type crusher.

Extrusion crusher includes jaw crusher , cone crusher, gyratory crusher , roll crusher and so on. Extruded material between the fixed tooth plate crusher movable tooth plate and squeezed , splitting and bending were broken. This kind of crusher for crushing cavity material mixed broken , easily formed over crushed , and easily form a large sheet product , can not guarantee the product size , power consumption . Mainly used for crushing hard materials , widely used in the field of metal mines and aggregates .

Impact crusher mainly includes counterattack crusher, hammer crusher, impact crusher and so on. The crusher is a kind of high-speed movement of the hammer blow of material after each blow , the material acceleration, fly to the impact plate , impact, counter-strike , subject to the same action repeatedly , crushing each other while being hit in the crushing cavity material impact , there is a part in the fight against shear and impact plate edge effect . This method of crushing the poor controllability will eventually result in a large number of pulverized coal , for high hardness and brittleness of high coal crushing situation this way worse , but there are restrictions on the feed size is not suitable for coal rough , broken jobs , more suitable for crushing operations.

Various forms of broken equipment , because of the different crushing mechanism , scope and purpose are different . Depending on the nature of the material should and operational requirements , choose a different crushing equipment. Therefore, we can consider : its different forms crusher crushing principle is different, has a different scope .