Sustainable Mining and Metallurgy

Based on the experiment analysis of manganese supplementation in the oxidation leaching of zinc sulfide concentrate, the optimum reaction conditions were obtained, including reaction time of 8h, reaction temperature of 80-90℃ and initial acid concentration of 160-180g/L. Applying these optimum reaction conditions in industrial production, the leaching rate of zinc and manganese can reach more than 92%, and the content of manganese ions in the hydrometallurgical system can be increased to more than 4g/L, which meets the standard requirements of manganese content control in a zinc hydrometallurgical plant. At the same time, the zinc content of the leaching residue before and after the manganese supplement process was adopted was analyzed and compared. The results showed that there was no significant difference in the zinc content in the leaching residue.