(北京有色金屬研究總院 生物冶金國家工程實驗室，北京 100088)
摘 要: 綜述1990以來國內外采用協同萃取方法從復雜溶液中分離鈷和鎳的研究現狀。將鈷和鎳協萃體系分為螯合萃取劑-有機酸體系、有機磷酸類混合體系、吡啶羧酸酯-有機酸類體系和胺類-有機酸類體系4類，分別介紹這些協萃體系對鈷、鎳及其他金屬離子的分離情況及萃取機理，對相同類型的體系進行比較，分析各協萃體系的分離特點，并提出運用協萃體系需要進一步解決的問題。
關鍵字: 鈷；鎳；協同萃取；分離
（National Engineering Laboratory of Bio-hydrometallurgy,
General Research Institute for Nonferrous Metals, Beijing 100088, China）
Abstract:The synergistic solvent extraction of cobalt and nickel from complex solution at home and abroad was summarized since the 1990s. The system of synergistic extraction is divided into four categories, including chelating extractant and organic acid, organophosphorous class of hybrid, pyridinecarboxylate esters and organic acids, and amines and organic acids. The separation and extraction mechanisms of different extraction systems were introduced, respectively. And the characteristics of synergistic extraction were analyzed by comparing the same synergistic extraction system. Finally, some problems about the synergistic extraction system that should be further studied were proposed.
Key words: cobalt; nickel; synergistic solvent extraction; separation
