新疆某铜镍硫化矿铜镍回收试验

新疆某铜镍硫化矿石为矿物分布不均匀、粒度粗细不等、镶嵌关系复杂、并伴生有金的低品位原生铜镍硫化矿石。为高效回收矿石中的铜、镍,采用铜镍混浮再分离流程对该矿石进行了选矿试验研究。结果表明,在磨矿细度为-0.074 mm占70%的情况下,采用1粗1扫3精铜镍混浮、1粗1扫2精铜镍分离、中矿顺序返回流程处理该矿石,最终获得了铜品位为22.36%、铜回收率为65.33%、含金115.00 g/t、金回收率为63.94%的铜精矿和镍品位为6.11%、镍回收率为71.25%的镍精矿。

Experiments of Copper and Nickel Recovery from a Copper-nickel Sulfide Ore in Xinjiang

The copper-nickel sulfide ore in Xinjiang with uneven distribution of minerals，wide range particle size distribution，and complex embedment，is a low grade natural copper and nickel sulfide ore associated with gold.Beneficiation experiments of Cu-Ni bulk flotation and then separation of Cu and Ni process are conducted in order to high efficiently recover copper and sulfur.Results indicated that，at the grinding fineness of 70% passing 0.074 mm，copper concentrate with copper grade of 22.36% and recovery of 65.33%，gold grade of 115.00 g/t and recovery of 63.94%，nickel concentrate with nickel grade of 6.11% and recovery of 71.25% were obtained through the process of Cu-Ni bulk flotation of one roughing-three cleaning-one scavenging，Cu and Ni separation of one roughing-two cleaning-one scavenging，and middles back to the flow-sheet in turn to deal with the ore.