Sand is evenly sent to the belt conveyor first through the disk feeder, and then through the quicksand pipe into the dryer, the heat generated by the combustion of fuel in the hot stove under the action of the extraction fan into the main engine and to contact with sand inside to complete the transfer of heat to reach rapid evaporation of moisture. The sand dryer produced by our company is with three return sealing structure, which can reduce heat loss and improve thermal efficiency. The dried sand is transported to the linear vibrating screen for screening, and then it is sent to the storage silo by the elevator for storage or packing. The upper part of the hopper is the dust removal system, after that, it can achieve the purpose of environmental protection.