从碱性氰化液中萃取低浓度Au(Ⅰ)的放大实验  

Study on pilot trial of solvent extraction from low gold concentration alkaline cyanide solutions

作　　者：杨项军[1] 陈景[1] 韦群燕[1] 赵家春[2] 李奇伟[2] 

机构地区：[1]云南大学化学与材料工程学院,云南昆明650091 [2]昆明贵金属研究所,云南昆明650221

出　　处：《化学研究与应用》2004年第5期693-694,共2页Chemical Research and Application

基　　金：云南省省院省校合作项目基金资助(B9808K)

摘　　要：The solvent extraction of trace gold(Ⅰ) from alkaline cyanide solution by CTAB/TBP system was investigated using a new extraction equipment.The results demonstrated that the addition of CTAB in aqueous phase could enhance the gold(Ⅰ) extraction rate of TBP sharply.The extraction of 20L alkaline cyanide solutions in two extraction columns showed that the extraction percentage was more than 91%,and the gold mass concentration of raffinate was less than 0.8ppm in the all process of extraction.Gold(Ⅰ) Stripping from loaded organic phase by KSCN was also studied.Almost all of gold in loaded CTAB/TBP could be stripped into aqueous phase by 3mol/L KSCN solutions for three times stripping.The solvent extraction of trace gold(Ⅰ) from alkaline cyanide solution by CTAB/TBP system was investigated using a new extraction equipment.The results demonstrated that the addition of CTAB in aqueous phase could enhance the gold(Ⅰ) extraction rate of TBP sharply.The extraction of 20L alkaline cyanide solutions in two extraction columns showed that the extraction percentage was more than 91%,and the gold mass concentration of raffinate was less than 0.8ppm in the all process of extraction.Gold(Ⅰ) Stripping from loaded organic phase by KSCN was also studied.Almost all of gold in loaded CTAB/TBP could be stripped into aqueous phase by 3mol/L KSCN solutions for three times stripping.

关 键 词：萃取 KAu(CN)2 十六烷基三甲基溴化铵 磷酸三丁酯 

分 类 号：TF804.2[冶金工程—有色金属冶金]