The leach system is continuous and includes two acid leach lines, each line has one pulp tank and three acid leach tanks with a total volume of 217 cubic meters and a useful volume of 185 cubic meters. The material of pulp and leach tanks is iron with rubber inner coating. Neutral leach consists of 4 tanks with a total volume of 8.230 cubic meters and a useful volume of 204 cubic meters, and the material of the tanks is iron with rubber inner lining. The leach filtration is done by 8 filter press machines and 4 centrifugal pumps, and the filtrate solution is divided into 3 The tank is transported with a total volume of 154.8 cubic meters. The filtrate solution is re-filtered by a centrifugal pump device and two filter press devices, and the filtrate solution enters two tank devices, which have a total volume of 101.4 cubic meters and have an oil coil to transfer to hot purification. Then the solution enters the purification stage. will be