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. Sand recycling system will reduce the loss amounts of fine material effectively, and solve the problems of end product with high fineness modulus and low stone powder content. The fine material can be recycled as high as 95%, with incomparable technical and economic advantages.