LZ series sand recycling system has absorbed foreign advanced technology, and designed combined with sand field actual situation. It is widely used in mud purification, artificial sand production line, hydropower station, sand aggregate system, glass raw material processing system, coarse slime recovery, and recycle fine material. It can effectively reduce the loss amounts of fine material; solve problems of end product such as relatively high fineness modulus and relatively low stone powder content. The fine material can be recycled as high as 95%, with incomparable technical and economic advantages.