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研究了用季铵盐从含氯化钠接近饱和的溶液中萃取分离二价金属离子钴、铁、锰的方法。实验结果表明 ,以含少量异辛醇改性剂的季铵氯化物的煤油溶液为萃取剂 ,萃取时尽管有 15 %～ 2 0 %的二价锰和钴一起被萃取 ,但通过两级洗涤可将负荷有机相中的锰降低到 0 .0 2 g/L以下 ,经三级洗涤除锰即可达到钴、锰分离。钴的回收率可达 98% ,负荷有机相中钴锰含量比大于 30 0。
A method for extracting and separating divalent metal ions of cobalt, iron and manganese from a solution containing sodium chloride almost saturated with quaternary ammonium salt was studied. The experimental results show that the kerosene solution containing a small amount of quaternary ammonium chloride as an isooctanol modifier is used as the extractant. Although the extractant is extracted with 15% ~ 20% of the bivalent manganese and cobalt, The manganese in the organic phase of the load can be reduced to less than 0.02 g / L, and manganese and manganese can be separated after three levels of washing to remove manganese. Cobalt recovery rate of up to 98%, load the organic phase of cobalt and manganese content ratio greater than 30 0.