介绍了湿法炼锌浸出渣经浮选所产的低品位银精矿,经焙烧脱硫、稀硫酸浸出、铜置换等工艺;得到可直接出售的高品位银精矿和铜粉,以及返电锌系统回收锌的含锌溶液;其锌浸出率≥95%、铜浸出率≥93%、银浸出率≤0.5%;整个流程锌、铜回收率均大于92%、银损失小于1%;每处理1个毛吨银精矿可增加销售收入6 000元以上.%Through the process that the low grade silver concentrate produced from flotation of the zinc haydrometallurgy leaching residues, the low grade silver concentrate then put into the roasting, desulfuration, dilute sulfuric acid leaching and copper replacement, the high grade silver concentrate and copper powder that can be sold directly, and the zinc containing solution that used for zinc recovery of the zinc electrolysis system;thereinto, the zinc leaching rate ≥95%, copper leaching rate ≥93%, silver leaching rate ≤0.5%, the recovery rate of zinc and copper in the whole process all greater than 92%, the silver loss is less than 1%;so the sales income can be increased more than RMB 6000 yuan once per gross ton silver concentrate treated.
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