Description

Function
These crushers involve the use of impact rather than pressure to crush materials. Here the material is held within a cage, with openings of the desired size at the bottom, end or at sides to allow crushed material to escape through them. Here the breakage can take place in a much shorter scale compared to fragmentation process used in cone or jaw crushers. It can crush material with feeding size not more than 500mm and crushing strength not more than 350MPa. It can produce cubic products with very good grain shape without tension and crack .It is widely applied to secondary and tertiary crushing of various ores and medium-hard materials in industry of roads, railways, electricity power and building materials roads, etc.

Working principle of Impact crusher
The materials are crushed via impact energy produced in the impact crusher. When the materials enter the zone of the board hammer, they are flung into the impact equipment via the high speed impact of the board hammer. These materials will be re-crushed after rebounding into the scale board. The large materials re crushed into small pieces until it becomes the specified granularities. The end products come out from the base of the impact crusher.

Various types
An impact crusher can be further classified as horizontal impact crusher and vertical shaft impact crusher based on the type of arrangement of the impact rotor and shaft.

Horizontal shaft impact crusher: Here the rotor shaft is aligned along the horizontal axis. It has a reduction ratio of around 10:1 to 25:1.

Vertical shaft impact crusher: These crushers use a high speed rotor that has its axis along the vertical axis. It uses the velocity rather than the surface force as the active force to break the material fed. These have a comparative lower reduction ratio of 6:1 to 8:1.

Main features

• Simple structure
• High-chromium plating hammer and special impact liner plate
• capable of highly efficient hard rock crushing while saving energy
• Final product is cubic in shape of a cube
• Easy maintenance, reliable performance