Vibrating screen adopts Polyurethane screen mesh , which has long lifetime and is not easy to block up the hole. The inner part of swirler has polyurethane, which imporves the lifetime of whole equipment and finish slurry concentrator and fluide clarifiant. Fine sand recovery system can recover 85% of the whole fine particle, and has technological and economical advantages. The fine particle can recover abundantly and reduce the work of setting pond and lower the cost of clearing the pond.