西藏某特大型铜钼矿矿石选矿试验

地处西藏高海拔生态脆弱区的某特大型铜钼矿矿石铜钼品位不高，伴生的金、银有综合回收价值。为了确定生产指标好、对矿区生态环境扰动小的开发利用方案，北京矿冶研究总院以自主开发的高效、低用量、易降解捕收剂BK401和起泡剂BK201为主要浮选药剂，进行了选矿试验研究。结果表明，矿石磨至-200目占70%后，采用2粗2精2扫铜钼混浮-1粗2扫铜钼分离-钼粗精矿再磨至-400目占80%后再进行5次精选-中矿顺序返回流程处理，最终可获得铜、金、银品位分别为26.22%、4.83 g/t、384.00 g/t，铜、金、银回收率分别为91.09%、59.42%、73.62%的铜精矿，以及钼品位为46.85%、钼回收率为65.18%的钼精矿。该试验研究成果对同一地区类似矿山的选矿具有指导和示范意义。

Mineral Processing of Ore from a Super-huge Copper-molybdenum Mine in Tibet

There is a super-huge copper-molybdenum mine in Tibet，which is located in an ecologically vulnerable area，contents of Cu and Mo are relatively low，associated silver and gold can be comprehensively recovered.To find a develop method which can have good production index and have little effect on the environment，beneficiation experiments were carried out by Beijing General Research Institute of Mining and Metallurgy(BGRIMM) using efficient，low consumption，easily degradable collector BK401 and frother BK201 as main flotation reagents.Results indicated that at the grinding fineness of 70% passing 200 mesh，via two roughing-two cleaning-two scavenging Cu-Mo bulk flotation，and one roughing-two scavenging separation of molybdenum from copper process，regrinding the molybdenum rough concentrate to 80% passing 400 mesh and enduring 5 times cleaning，copper concentrate with 26.22% Cu，4.83 g/t Au，384.00 g/t Ag，and Cu，Au，Ag recovery of 91.09%，59.42%，73.62% respectively，Molybdenum concentrate with molybdenum grade and recovery of 46.85% and 65.18% respectively was obtained.The research achievements have good guidance and demonstration significance to similar mine.