陕西某钼铅多金属矿选矿试验

陕西某钼矿石矿物成分复杂,主要有用矿物有辉钼矿、方铅矿、黄铁矿,并有少量钼铅矿等,钼、铅、硫、金等有回收价值,其中钼、铅主要以硫化物形式存在。为高效开发利用该矿石,进行了选矿试验研究。结果表明,矿石在磨矿细度为-0.074 mm占68%的情况下1次粗浮选选钼、钼粗精矿再磨至-0.038 mm占93.75%的情况下4次精选选钼,1粗1扫钼尾矿1粗1扫2精选铅,铅扫选尾矿1粗2扫2精选硫,所有中矿顺序返回闭路流程处理,最终获得了钼品位为49.24%、钼回收率为89.19%的钼精矿,铅品位为61.69%、铅回收率为83.47%的铅精矿,硫品位为46.32%、硫回收率为68.21%的硫精矿,较好地实现了钼铅硫的综合回收。

Beneficiation Test of Mo-Pb Polymetallic Ore in Shaanxi

Mineral composition of a molybdenum ore in Shaanxi province is complex,main minerals are molybdenite,galena,pyrite,and little wulfenite,among which molybdenum,lead,sulfur,gold has recovery value,molybdenum and lead mainly exists in form of sulfide.Beneficiation experiment is carried out in order to high efficiently develop and utilize the ore.The results showed that：at the grinding fineness of 68% passing 0.074 mm,through one molybdenum rough concentration,four cleaning molybdenum flotation of molybdenum rough concentrate at the grinding fineness of 93.75% passing 0.038 mm,molybdenum concentrate with molybdenum grade of 49.24% and recovery of 89.19%,lead concentrate with lead grade of 61.69% and recovery of 83.47%,and sulfur concentrate with sulfur grade of 46.32% and recovery of 68.21% were obtained separately through the process of lead concentration of one roughing-two cleaning-one scavenging,sulfur flotation of one roughing-two cleaning-two scavenging for lead tailings,all middles returns to the flow-sheet in turn.By this method,comprehensive recovery of molybdenum,lead and sulfur is well gained.