【摘要】 用ＡｃｏｒｇａＭ５６４０萃取剂对硫酸锌浸出液优先萃取分离铜．用二（２－乙基己基）二硫代磷酸（Ｄ２ＥＨＤＴＰＡ）和三辛胺（ＴＯＡ）协萃体系进行锌、镉分离．应用Ｄ２ＥＨＤＴＰＡ－甲苯体系时，镉完全萃取，但有机相中的镉很难反萃．应用Ｄ２ＥＨＤＴＰＡ－ＴＯＡ协萃体系时，镉能从硫酸锌溶液中选择性萃取，也能很容易地从有机相中反萃，实现镉与锌的分离．提出了从硫酸锌中性浸出液萃取分离铜、镉的无渣净化新工艺．更多还原

【Abstract】 The extraction and separation of copper with Acorga M5640 and cadmium with di-(2-ethylhexyl)-dithiophosphoric acid(D2EHDTPA) are investigated Copper and cadmium can be extracted very easily Cadmium is almost completely extracted, but stripping of cadmium from D2EHDTPA phase is very difficult With the newly developed synergistic extraction system of D2EHDTPA-Trioctylamine(TOA), high selective extraction of cadmium from zinc sulphate solution is obtained and stripping of cadmium from loaded phase can be operated satisfactorily The synergistic extractant system developed in this work was examined with a real leaching liquor containing copper, cadmium and zinc, and a good result of extraction separation was acquired A new process for the extraction and separation of copper and cadmium from zinc sulfate solution without residue was proposed更多还原