Granite, known as “king of the rock”, is a kind of rock which is of even structure, hard texture, pleasant colour and good durability. Based on the high hardness and wear resistance, granite is widely used to not only the luxurious architectural decoration works and the lobby floor, but also the top choice of outdoor sculptures.
The big granite blocks are fed into the jaw crusher by the vibrating feeder from the raw material hopper. During this process, the impurities, such as the soil and tree branches, are sieved out and conveyed to the waste pile. After the first crushing stage by the jaw crusher, the material will get into the secondary crushing stage by the impact crusher. Through these processes above, the crushed granite gravel is conveyed to the vibrating screen and separated into three grades as follows: the 5-40mm coarse aggregate，the 0-5mm fine aggregate and the gravel bigger than 40mm, which will be conveyed back to the impact crusher to crush again. This is a complete closed loop crushing system which is specific to the medium hardness materials. The design of selecting jaw crusher and impact crusher improves the operating stability, produces the gravel in good shape, and reduces the operating costs.