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针对某铜镍混合精矿铜镍矿物嵌布粒度细且致密共生、残留药量大、铜离子活化干扰造成铜镍分离困难的特点,进行了浮选试验研究。试验研究结果表明:混合精矿再磨至-0.037mm占73.34%后,采用活性炭脱药、石灰+新型抑制剂NJ抑镍浮铜进行铜镍分离,闭路试验最终获得铜精矿铜品位28.26%、铜回收率84.13%,镍精矿镍品位8.02%、镍回收率97.91%,精矿中铜镍互含下降明显,获得了合格的铜精矿和镍精矿,实现了低碱条件下铜镍分离。
A flotation experiment was carried out on the copper-nickel concentrate of copper-nickel mixed concentrates with fine grain size, dense symbiosis, large residual dose and interference of copper ions in copper-nickel separation. The experimental results show that: after the mixed concentrate is refinded to -0.037mm, accounting for 73.34%, the copper and nickel are separated by activated carbon detoxification and lime + new inhibitor Ni-Ni floating copper. The closed-circuit test results in copper concentrate grade of 28.26% , Copper recovery rate of 84.13%, nickel concentrate grade of 8.02%, nickel recovery rate of 97.91%, the concentrate of copper and nickel decreased significantly, access to qualified copper concentrate and nickel concentrate to achieve low alkali copper Nickel separation.