Process Description: According to the feature of the river stone and the site condition of client’s site, we LIMING draw a design of 3-stage stone crushing line. Primary stage use the deep chamber jaw crusher, it owns high crushing ratio, and also its outputs can totally meet with the cone crusher feeding mouth. Secondary stage use the Simons spring cone crusher CSB75 which is of stable operation. Tertiary stage use the sand making machine VSI7611. Since it owns the central feeding method and stone -to-stone impact method, it can be used widely for stone re-shaping and sand making.