某锌铁尾矿中锌硫的回收试验

Recovery Experiment of Zinc and Sulfur from a Zinc-iron Tailings

某锌铁矿山选厂采用先浮后磁工艺获得锌精矿和铁精矿,尾矿Zn品位为1.36%、S品位为2.40%,-200目39.82%,主要锌、硫矿物为闪锌矿和硫铁矿,且已基本单体解离。为了高效回收其中的有用成分锌、硫,进行了选矿试验研究。结果表明,现场尾矿试样采用1粗2精1扫流程选锌、1粗1精流程选硫,最终可获得Zn品位为43.18%、Zn回收率为88.25%、S品位为29.25%、S回收率为37.68%的锌精矿,以及S品位为42.15%、S回收率为48.26%的硫精矿。

Zinc concentrate and iron concentrate were obtained by floatation followed by magnetiza tion in a concentrator of a zinc-iron mine.The zinc grade of tailings was 1.36%,the sulfur grade was 2.40%,and-200 mesh was accounting for 39.82%.The main zinc-bearing and sulfur-bearing minerals were sphalerite and pyrite,and has been dissociated in monomer.In order to recover the useful compo nents,like zinc and sulfur efficiently,the mineral processing test was carried out.The results showed that the in-situ tailings samples are treated with one roughing,two cleaning and one scavenging process for zinc separation and one roughing and one cleaning process for sulfur separation.Finally,zinc concentrate with Zn grade of 43.18%,Zn recovery rate of 88.25%,S grade of 29.25%,S recovery rate of 37.68%and sul fur concentrate with S grade of 42.15%and S recovery rate of 48.26%could be obtained.