内蒙古某铜铅锌多金属硫化矿石选矿试验

摘要

内蒙古某铜铅锌多金属硫化矿石中主要有价元素为铜、铅、锌、银,主要金属矿物方铅矿、闪锌矿、黄铁矿、黄铜矿等嵌生关系密切.为确定该矿石的选矿工艺流程,采用铜铅混浮再抑铅浮铜、锌硫混浮再抑硫浮锌原则流程进行了选矿试验.结果表明:矿石在磨矿细度为-200目占70%的情况下,采用1粗2扫3精铜铅混浮、1粗1扫2精铜铅分离、1粗1精3扫锌硫混浮、1粗2扫3精锌硫分离流程处理,获得了铜品位13.52%、含银3398.44 g/t、铜回收率68.95%、银回收率29.25%的铜精矿,铅品位68.36%、含银3053.78 g/t、铅回收率84.28%、银回收率46.39%的铅精矿,锌品位46.73%、含银241.13 g/t、锌回收率81.85%、银回收率11.90%的锌精矿,以及硫品位16.09%、硫回收率18.89%的硫精矿.%Main valuable element of a Cu-Pb-Zn multi-metal ore in Inner Mongolia is copper,lead,zinc and silver,the main valuable metallic mineral is galena,sphalerite,pyrite and chalcopyrite etc,are symbiosis intimately. In order to ascertain mineral processing flow of the ore,the principle process of mineral processing experiment are adopted by process of copper-lead bulk flotation then copper float lead suppression,zinc-sulfide bulk flotation then zinc float sulfide suppression. The results show that:with grinding fineness of-200 mesh passing 70%,via one roughing-three cleaning-two scavenging copper-lead bulk flota-tion,one roughing-two cleaning-one scavenging copper and lead separation,one roughing-one cleaning-three scavenging zinc-sulfide bulk flotation,one roughing-three cleaning-two scavenging zinc and sulfide separation process,copper concentrate with 13. 52% Cu and 3398. 44 g/t Ag,Cu and Ag recovery of 68. 95% and 29. 25%,lead concentrate with 68. 36% Pb,3053. 78 g/t Ag,Pb and Ag recovery of 84. 28% and 46. 39%,zinc concentrate with 46. 73% Zn and 241. 13 g/t Ag,Zn and Ag recov-ery of 81. 85% and 11. 90%,and sulfide concentrate with 16. 09% S and recovery of 18. 89% was obtained.