This machine is appropriate to these raw materials such as coal gangue, shale, cider and other special-hard material. The features of this machine is steady operation, high output, large crushing ratio and so on; The machine adopts the wear resisting materials with high hardness and high strength to make the hammer head, sieve bottom, hubei plate and other components. The design of the hammerhead is unique. When the hammerhead wear out, you can switch the hammer face easily. What's more, you can adjust the interstice according to the fineness request of material. It is the ideal equipment for pulverizing hard raw material.