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高锍分选的铜精矿中的金属镍(Ni°)以合金的形式呈细小颗粒分布于二硫化三镍(Ni_3S_2)中,且Ni°的氧化电位与Ni_3S_2相差很小(△E°=0.29V),故其选择氧化溶解困难。张炬提出的盐酸羟胺沸水浴法,较好地解决了水淬高冰镍中二者的分离问题。但由于浸取过程中蓝辉铜矿发生相变,有部分铜离子进入溶液和硫化镍发生置换反应,导致Ni_3S_2溶解而使Ni°结果偏高,因而不适于铜精矿中二者的选择溶解。Семавин等人提出的硫酸铜
Nickel (Ni °) in the high-matte copper concentrates was finely dispersed in nickel disulfide (Ni_3S_2) as an alloy and the oxidation potential of Ni ° was slightly different from that of Ni_3S_2 (ΔE ° = 0.29V), so the choice of oxidation and dissolution difficulties. Zhang Ju proposed hydroxylamine hydrochloride boiling water bath, a better solution to the water quenching high ice nickel in the separation of the two problems. However, due to the phase transition of the blue-chalcopyrite during the leaching process, some of the copper ions enter into the solution and the nickel sulfide undergoes displacement reaction, resulting in the dissolution of Ni_3S_2 and the high Ni ° result, which is not suitable for the selective dissolution of both copper concentrates . Семавин et al proposed copper sulfate