从郴州某冶炼渣中分选锌铅银

摘要

There is 7.23% lead,5.02% zinc,143.28 g/t silver,45.70% iron,and 21.11% sulphur in a smelting slag from Chenzhou.Beneficiation experiments were conducted on the typical sample to develop and utilize the secondary resource. The results indicated that,at the grinding fineness of 72%passing 0.074 mm,with copper sulfate as the activator,quicklime as inhibitors and isobutyl xanthate as collector via one roughing-one scavenging-two cleaning closed circuit process for enrichment of zinc,and at the regrinding fineness of 84%passing 0.038 mm via shaking table for enrichment of lead and silver from zinc tailings,zinc concentrate with 40.02% Zn and recovery of 80.36% are obtained,and lead-silver mixed concentrate with 45.56% Pb and recovery of 62.83%,and with 1 000.12 g/t Ag and recovery of 69.59% are obtained.%郴州某冶炼渣中铅、锌、银、铁、硫含量分别为7.23％、5.02％、143.28 g／t、45.70％、21.11％。为开发利用该二次资源，对有代表性试样进行了选矿试验。结果表明：在磨矿细度为－0.074 mm占72％条件下，以硫酸铜为活化剂、生石灰为抑制剂、异丁基黄药为捕收剂，经1粗1扫2精流程选锌，选锌尾矿再磨至－0.038 mm占84％后经1次摇床重选选铅银，可获得锌品位为40.02％、回收率为80.36％的锌精矿，以及铅、银品位分别为45.56％和1000.12 g／t，铅、银回收率分别为62.83％和69.59％的铅银混合精矿。