In recent years, with the development of situation in the country, a variety of large-scale projects continue, but also increasing the demand for sand and gravel. On the other hand countries in order to regulate the exploitation of resources industry, some large and small polluting production lines, gravel pits be banned,integration,environmental protection, a large gravel…

If we want to produce much better sand and gravel, we must rationally allocated sand making line so as to play the greatest effect of sand production line equipments. Like belt conveyor and sand maker, the speed of their work is related to the speed of the entire production line, only reasonable combination can reduce…