福建冶金2026，Vol.55Issue(5)：4-8,5.
湿法炼锌浮选银精矿提质降杂工艺研究
Research on the Upgrading and Decontamination Process of Silver Concentrate in Zinc Hydrometallurgy Flotation
摘要
Abstract
In response to the low zinc leaching rate and low external pricing coefficient in the silver concentrate upgrading process of a wet zinc refining enterprise in Inner Mongolia,the silver concentrate was activated by fine grinding machinery to improve the leaching rates of zinc and iron.The effects of reaction temperature,initial sulfuric acid concentration,reaction time,particle size,and activation on zinc leaching rate were investigated.The experimental results showed that after fine grinding of silver concentrate to a particle size of≤10 μ m,accounting for 90%,with an initial sulfuric acid concentration of 200 g/L,a liquid-solid ratio of 10 mL∶1 g,a temperature of 95℃,and continuous leaching for 5 hours under oxygen rich conditions,the leaching rate of zinc was 91.11%.Taking into account cost factors,the optimal condition for improving the quality and reducing impurities of silver concentrate is to extract it at atmospheric pressure after activation by fine grinding machinery.Compared with on-site two-stage high acid leaching,it can effectively reduce the consumption of reagents and shorten the process flow.关键词
银精矿/细磨/机械活化/常压浸出Key words
silver concentrate/fine grinding/mechanical activation/atmospheric leaching引用本文复制引用
薛祥,王俊娥,吴星琳,陈晨,匡晨..湿法炼锌浮选银精矿提质降杂工艺研究[J].福建冶金,2026,55(5):4-8,5.基金项目
国家重点研发计划(2022YFC2904604) （2022YFC2904604）
