新疆某低品位铜镍矿选矿试验研究

Experiment Study on Mineral Processing on One kind of Low-Grade Copper-Nickel Ore in Xinjiang

针对新疆某低品位铜镍矿矿石性质的特点,采用1粗2扫2精铜镍混浮、1粗1扫铜镍分离、中矿顺序返回的闭路试验流程,铜镍混浮以CMC与水玻璃的组合为脉石矿物抑制剂、异丁基黄药为捕收剂、A8为辅助捕收剂,铜镍分离以活性炭为脱药剂、石灰与T12的组合为镍矿物抑制剂、Z-200为捕收剂,获得了铜品位为27.03%、铜回收率为67.79%、含镍0.93%的铜精矿,以及铜品位为3.79%、镍品位为5.59%、铜回收率29.14%、镍回收率70.82%的铜镍混合精矿。

According to the characteristics of the low grade copper-nickel ore in Xinjiang,adopt a closed circuit test flowsheet which have one roughing, two scavenging and two concentrating copper-nickel mixed floating; and one roughing, one scavenging copper-nlckel separation, middlings order returned.＇Reagents used in copper-nickel mixed flotation are the combined depressants of CMC and Sodium silicate,colleeter iso-butyle Xanthate and assistant collecter A8. Copper-nickel separation medicament is conducted： using Activated Carbon to remove reagents,lime and T12 as the Inhibitors,Z-200 for collector. The Copper concentrate is obtained with Copper grade of 27.03%, nickel grade of 0. 93% and Copper reeovery of 67.79%. the mixed concentrate of copper and nickel is obtained with nickel grade of 5.59% ,copper grade of 3.79% and nickel recovery of 70. 82% , copper recovery of 29. 14%.