Purification of CI2-02 Leach Liquors by Zinc Cementation

摘要

To develop technology to help assure an ample domestic supply of zinc, the Bureau of Mines is investigating an aqueous chlorine-oxygen leaching process for treating complex sulfide concentrates. This report discusses the purification of aqueous Cl2-O2 leaching solutions by utilizing zinc cementation to remove Cd, Co, Cu, Ni, and Pb. Additional processing of the purified solution is necessary to produce ZnCl2 crystals suitable for molten-salt zinc electrowinning cells.