镍精矿氯气浸出液经除铁后 ,用萃取剂N2 35 萃取净化 ,研究了有机相组成对除杂效果的影响 ;确定了最佳的有机相组成为 2 5 %N2 35 — 12 %异构醇— 63 %磺化煤油 (体积分数 ) ;测定了有机相的钴饱和容量并进行了相应的串级试验。结果表明 :净化后溶液中 ρ(Ni) >2 0 0g L ,ρ(Ni) ρ(Co) >5 0 0 0 0 ,并且溶液中Cu、Fe、Mn、Zn等杂质含量也达到了生产 1号电镍的技术要求 ;产出的氯化钴溶液中 ρ(Co) >110g L ,ρ(Co) ρ(Ni) >5 0 0 0 ,实现了钴的富集。 After removing iron from the nickel concentrate leaching solution, the extractant N235 was used for extraction and purification to study the effect of the organic phase composition on the impurity removal effect. The optimum organic phase composition was identified as 25% N2 35-12% isomeric alcohol - 63% sulfonated kerosene (volume fraction); the saturation capacity of cobalt in the organic phase was measured and the corresponding cascade test was carried out. The results show that the content of impurities such as Cu, Fe, Mn, Zn and other impurities in the solution reaches to 1 Electroless Nickel; cobalt (Co)> 110g L and ρ (Co) ρ (Ni)> 5 0 0 0 were obtained in the cobalt chloride solution.