摘要
本文叙述了５７０９对镍钴及其他杂质阳离子的溶剂萃取行为，研究了平衡水相ｐＨ值、５７０９浓度以及温度对阳离子分配系数的影响，特别研究了平衡水相ｐＨ值以及５７０９浓度对钴／镍分离系数的影响。结果表明，可以推荐的萃取参数有平衡水相ＰＨ＝５．１，５７０９浓度为１０％煤油溶液，萃取温度为５０～５５℃。本文还对钴／镍以及高铁的反萃取进行了研究。推荐两步反萃，即先以０．５ｍｏｌ／Ｌ Ｈ＿２ＳＯ＿４反萃钴镍，接着以０．５ｍｏｌ／Ｌ Ｈ＿２Ｃ＿２Ｏ＿４反萃取Ｆｅ￣（３＋）。
The solvent extraction behaviour of 5709 towards co6alt, nickel andother impurities of metal cations is described,The effects of equilihrium pH,concentration of 5709 and the temperature on the extraction efficiency anddistribution coeficient of metal cations are studied,The effects of equllibrium pHand concentration of 5709 on the separation coeficient are also examined.Results have shown that the equilibrium pH of 5.1 and the concentration of10%5709 can be preferred,Tlie re-extraction efficiency of cobalt,...
出处
《有色金属》
CSCD
1995年第1期37-43,共7页
Nonferrous Metals
关键词
己基膦酸甲庚酯
钴
镍
溶剂萃取
萃取反应热效应
hexyl（methyl heptyl）phosphoric acid
solvent extraction
obalt
nickel
thermal effect
