某铜铅锌多金属硫化矿石的浮选试验

某铜铅锌多金属硫化矿石中的有用金属矿物主要为方铅矿、闪锌矿、黄铜矿,其次是斑铜矿、蓝铜矿、异极矿和铅矾等,为了确定铜铅锌回收工艺,进行了选矿试验。结果表明,矿石在磨矿细度为-0.074 mm占75%的情况下,采用1粗3精2扫铜铅混浮、1粗3精2扫铜铅分离、1粗2精1扫选锌流程处理矿石,可获得铜品位为22.13%、铜回收率为80.08%的铜精矿,铅品位为62.32%、铅回收率为79.63%的铅精矿,以及锌品位为52.56%、锌回收率为82.20%的锌精矿。在铜铅分离过程中,无氰无铬环保型铅组合抑制剂CHP的使用是实现铜、铅高效分离的关键。

Research on Flotation Tests of a Cu-Pb-Zn Polymetallic Sulfide Ore

Useful metal minerals in a copper-lead-zinc polymetallic sulfide ore are mainly galena， sphalerite and chalcopyrite， followed by bornite， azurite， hemimorphite ， anglesite and so on. Mineral processing tests were carried out in order to determine the technological process for recovering copper， lead and zinc. The results showed that one-roughing， three-cleaning and two-scavenging for copper-lead mixed flotation， one-roughing， three-cleaning and two-scavenging for copper-lead separation flotation， one-roughing， two-cleaning and one-scavenging for zinc flotation were adopted when the grinding fineness is 0.074 mm accounted for 75%. The copper concentrate with copper grade of 22.13% and copper recovery of 80.08%， lead concentrate with lead grade of 62.32% and lead recovery of 79.63%， zinc concentrate with zinc grade of 52.56% and zinc recovery of 82.20% were obtained. In the process of copper and lead separation， CHP， an environment-friendly lead combined inhibitor without cyanide or chromium， is the key to realize the efficient separation of copper and lead.