China Nonferrous Metallurgy

Yunxi Wenshan Zinc Indium Smelting Co., Ltd. use antimony salt purification method to purify the supernatant in zinc hydrometallurgy. In this process, the unit consumption of zinc powder is the most important economic and technical index, and for every additional 1t of zinc powder consumption, the increased cost is about 6000 yuan. At present, the domestic zinc powder unit consumption is generally 50~60kg/t. The company adopted measures to control the quality and supply of the supernatant, the pH value of the solution, the reaction temperature, the reaction time, the amount of antimony salt, the particle size of the zinc powder, and the refined operation to reduce the zinc powder unit consumption from about 60kg/t to about 48kg/t, saving more than 7 million yuan in production costs. In addition, the primary qualification rate of the new liquid and the quality of the new liquid have been significantly improved, and the economic benefits are significant. Its experience can provide a certain reference for hydro zinc smelting enterprises.