吉林某难选铜镍硫化矿石选矿试验

吉林某难选铜镍硫化矿石铜品位为0.19%、镍品位为0.42%。矿石中铜镍矿物共生密切,嵌布粒度微细。为给该矿石的开发利用提供依据,进行了铜镍混合浮选—分离浮选试验。结果表明:在磨矿细度为-0.074 mm占80%条件下,以硫酸铜为活化剂、乙基黄药+丁铵黑药为捕收剂、2号油为起泡剂、CMC为精选抑制剂,经1粗3精2扫铜镍混合浮选获得铜镍混合精矿,铜镍混合精矿再磨至-0.038 mm占90%,以石灰为抑制剂、乙基黄药为捕收剂,经1粗3精2扫铜镍分离浮选,获得了铜品位为24.62%、铜回收率为79.04%、镍品位为0.73%、镍回收率为1.06%的铜精矿及镍品位为5.73%、镍回收率为75.85%、铜品位为0.11%、铜回收率为3.22%的镍精矿,实现了铜镍的有效综合回收。

Beneficiation Experiment of a Refractory Micro-fine Copper-nickel Sulfide Ore from Jinlin

There is 0.19% copper and 0.42% nickel in a refractory copper-nickel sulfide ore from Jilin.Copper and nickel ore mineral paragenesis significantly，fine disseminated.To provide technique basis for the development and utilization of the ore，copper and nickel bulk flotation-copper and nickel separation flotation process was conducted.The results show:at the grinding fineness of -0.074 mm accounted for 80%，using copper sulfate as activator，ethyl xanthenes + butyl ammonium aeroflot as collector，2# oil as the foaming agent，CMC for selection inhibitors via one roughing-three cleaning-two scavenging for copper and nickel bulk flotation to achieve Cu-Ni bulk concentrate，reground the Cu-Ni bulk concentrate to -0.038 mm accounted for 90%，with lime as inhibitor，ethyl xanthate as collector endure one roughing-three cleaning-two scavenging copper and nickel separation flotation，copper concentrate with copper grade of 24.62%，copper recovery of 79.04%，nickel grade of 0.73%，nickel recovery of 1.06% of the，nickel concentrate with nickel grade of 5.73%，nickel recovery of 5.73%，copper grade of 0.11%，copper recovery of 3.22% was achieved.Comprehensive recovery of the copper and nickel was realized.