Henan Deya Machinery Co., Ltd. exported a complete crushing plant in March, 2014 to Bolivia, and it was successfully installed in July. The crushing plant with processing capacity 200 tons per hour, includes vibrating feeder 4900×1100, jaw crusher 750×1060, impact crusher 1210 two sets and vibrating screen 1800×4800, equipment are connected by belt conveyors. The run test was successful, and won great praise from the client. Engineers for guide the installation came back on 9th, August, 2014.
Impact crushers involve the use of high speed impact rather than compression to crush material. They utilize hinged or fixed heavy metal hammers or bars attached to the edges of horizontal rotating disks. The bars repeatedly strike the material to be crushed. Then the material is thrown against a rugged solid surface which further degrades the particle size. Finally, the material is forced over a discharge grate or screen by the hammers through which the finer particles drop while larger particles are swept around for another crushing cycle until they are fine enough to fall through a discharge grid. This type of crusher is normally used on soft materials such as coal or limestone due to the high wear experienced by the impact hammers, bars and inner surfaces. These crushers are normally employed for secondary or tertiary crushing.