赤峰某低品位铜钼矿选矿试验

赤峰某大型斑岩型低品位铜钼矿床，铜钼矿物主要以硫化物形式存在，且嵌布关系密切、嵌布粒度微细。为高效开发利用该贫矿资源，对矿石进行了选矿工艺技术条件研究。结果表明，铜钼混浮适宜的磨矿细度为-0.074 mm占70%，铜钼分离适宜的磨矿细度为-0.043 mm占80%；采用1粗2精1扫、中矿顺序返回闭路流程混浮铜钼，1粗5精2扫、中矿顺序返回闭路流程分离铜钼，最终获得了铜品位为17.51%、铜回收率为81.25%的铜精矿，以及钼品位为42.41%、钼回收率为88.35%的钼精矿。

Beneficiation Experiment on a Low Grade Copper-molybdenum Ore from Chifeng

Cu-Mo minerals mainly exist in form of sulfide ore and closely associated with each other in fine dissemination in a large-scale porphyry low grade copper-molybdenum deposit in Chifeng.In order to realize high efficient development and utilization of the ore,conditioning tests of mineral processing for the ore were carried out.The results showed that,under the optimum grinding fineness for copper and molybdenum mixed flotation at 0.074 mm passing 70%,grinding fineness for copper and molybdenum separation at 0.043 mm passing 80%,copper concentrate with copper grade of 17.51%,copper recovery of 81.25%,and molybdenum concentrate with molybdenum grade of 42.41%,molybdenum recovery of 88.35% were obtained through closed-circuit process of one roughing,two cleanings,one scavenging and middles back to the flow-sheet in turn for copper and molybdenum mixed flotation,and the closed-circuit process of one roughing,five cleanings,two scavengings and middles back to the flow-sheet in turn for copper and molybdenum separation flotation.