As we know, the stone crusher is a striker of mine resources exploitation, the material of broken will largely determine final quality of the resources. Computer control can reduce the human resources for material to be monitoring, to ensure the products with high yield, good quality, reduce waste emissions, such as the realization of the…

With the rapid development of building industry, the sand has a big demand for building engineering. The river sand, as a local resource, can not reborn again at a short time with a phenomenon of decreasing of natural sand in the world even no natural sand existing in some area.