Crusher is a kind of construction machinery,and its waste materials whose row size greater than three millimeters take up more than 50 percent of total waste.Crusher is widely used in mining, building materials, cement, smelting, road, railway, water conservancy and chemical industry. crusher applications in the cement industry, paving industry and mining industry take up about 30% of the entire crusher industry. So crushers plays an important role in the national economy . crushing operation is often divided into coarse crushing , secondary crusher and fine crushing . there are five methods of crushing. And actual crushing operations is often combined effects of several ways.
1.Crusher approach of using two broken face the pressure generated by squeezing, crushing of materials. Jaw crusher, roll crusher, cone crusher is the main way to crush the broken machinery.
2.The use of sharp teeth crusher of the split wedge material to be broken force, the role of centralized power, the occurrence of partial fragmentation, adapted to the crushing of brittle materials.
3. Broken face materials in between the two as to withstand a concentrated load point (or fulcrum) beam, the flexor surface of the material itself has broken off.
4. Two broken face to make the material relative movement of materials applied shear force to rupture of materials (suitable for fine grinding of materials).
5. The use of impact crushing ore. Impact is instantaneous force acting on the ore. For example, crusher broken force main impact.