About No.6 sand recycling system, we still choose polyurethane screen as its main screening part, and add recycling part on TS dewatering screen. Sand after sand washer is fed onto polyurethane screen for dewatering, waste sand water through steel chute or rubber pipe in water tank and extracted by slurry pump into high pressure sediment separator, fine sand 0.16-3mm is sprayed onto polyurethane screen also for de-watering, the waste water is back to return box and flowing out.