(1. 昆明贵金属研究所， 昆明 650221；
2.北京大学 化学与分子工程学院， 北京 100871)
摘 要: 研究了水相中加入表面活性剂CTAB与水相中无CTAB时，100%TBP对低浓度氰化金液（z久10mg/L)的萃取性能，包括盐析剂NaCl浓度的影响，连续萃取低浓度金萃取率的变化、萃取平均等温线、有机相中金浓度对金萃取率影响等。结果表明，在水相中加入CTAB后，100%TBP的萃取性能比水可上无CTAB时更优越。实验室放大结果表明，水相中加入CTAB时，100%TBP能适应对低浓度金（约10mg/L)的萃取要求，对10L合成料液的一级萃取率在90%以上，具有一定的工业应用前景。
关键字: 金； 碱性氰化液； 十六烷基三甲基溴化铵； 磷酸三丁脂
（1. Institute of Precious Metals, Kunming 650221, China;
2. College of Chemistry and Molecular Engineering, Peiking University,
Beijing, 100871, China）
Abstract:Gold extraction from alkaline aurocynide solution(about 10mg/L) with 100% TBP in aqueous phase with CTAB and without CTAB, was studied, The effect of NaCl concentration, initial gold concentration in organic phase, equilibrium isotherm and the changes of extraction rate with extraction times were investigated. The results show that 100% TBP has better ectraction characteristic in aqueous phase with CTAB than in aqueous phase without CTAB. The results of extraction from 10L gold alkaline aurocynide solution of 10mg/L using 150mL TBP indicate that gold extraction rate is more than 90%.
Key words: gold; alkaline aurocynide solution; surfactant CTAB; TBP
