某低品位铜钼矿工艺矿物学及选矿工艺研究

Study on Process Mineralogy and Mineral Processing Technology of A Low Grade Copper-Molybdenum Ore

青海某铜钼矿含钼0.084%,铜含量0.067%。工艺矿物学研究表明,原矿中钼主要以辉钼矿形式存在,铜以黄铜矿、辉铜矿及斑铜矿等形式赋存。针对矿石性质,结合探索实验,最终采用铜钼优先浮选工艺处理该矿石。在磨矿细度为-74μm 70%条件下,经一次粗选一次扫选两次空白精选得钼粗精矿,钼粗精矿再磨后经三次精选获得了钼品位50.21%、回收率85.21%的钼精矿;钼浮选尾矿用硫酸铜活化后经一次粗选一次扫选四次精选,获得了品位15.32%、回收率54.92%的铜精矿,实现了有价元素的综合回收。

A copper-molybdenum ore in Qinghai contains 0.084% Mo and 0.067% Cu. Process mineralogical study shows that molybdenum in the ore mainly exists in the form of molybdenite, while copper in the form of chalcopyrite, chalcocite and bornite. Based on the molybdenum ore property, the flowsheet of selective flotation was adopted.Copper and molybdenum were comprehensively recovered by flotation process. Under the condition of grinding fineness of 74 μm 70%, molybdenum concentrate was obtained by one roughing, one scavenging and two blank cleaning. After regrinding, molybdenum concentrate with molybdenum grade of 50.21% and recovery of 85.21% was obtained by three cleaning.After molybdenum flotation tailings were activated with copper sulfate, copper concentrate with grade of15.32% and recovery of 54.92% was obtained by one roughing, one scavenging and four cleaning. The comprehensive recovery of valuable elements was realized.