硫化锌精矿氧化浸出补锰在湿法炼锌中的应用

Application of Manganese Supplementation by Oxidation Leaching of Zinc Sulfide Concentrate in Zinc Hydrometallurgy

本文通过进行硫化锌精矿氧化浸出补锰的试验分析,得出反应时间8 h、反应温度80~90℃、始酸浓度160~180 g/L的最佳反应条件。在工业化生产中应用该最佳反应条件,锌、锰浸出率能达到92%以上,湿法系统中锰离子含量提高到4 g/L以上,满足了某湿法炼锌厂锰含量控制的标准要求。同时对该补锰工艺投入生产前后的浸出渣含锌量进行分析对比,结果显示浸出渣含锌量并无明显差异。

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 8 h,reaction temperature of 80-90℃and initial acid concentration of 160-180 g/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 4 g/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.