P507从酸性硫脲浸金液中回收金  

Recovery of Gold from Gold-leaching Acidic Thiourea Solution by P507 Extraction and Na_2SO_3 Stripping

作　　者：朱萍[1] 古国榜[1] 贾宝琼[1] 

机构地区：[1]华南理工大学应用化学系,广州五山510640

出　　处：《过程工程学报》2002年第2期142-145,共4页The Chinese Journal of Process Engineering

摘　　要：研究了用P507的煤油溶液作为萃取剂,从酸性硫脲(TU)浸金液中回收金的性能. 用浓度为1.65 mol/L的P507萃取剂在料液[H2SO4]=0.335 mol/L, 相比O/A=1:1,两相接触时间5 min的条件下萃取金,得到金的一级萃取率达99.80%;用50 g/L的Na2SO3溶液反萃,一级反萃率达82.45%,同时达到金、铁的分离.The performance using P507 to extract gold from gold-leaching acidic thiourea solution was investigated. Gold was extracted by P507 of 1.65 mol/L in kerosene under the conditions of H2SO4 concentration 0.335 mol/L, phase ratio 1:1 and time of contact 5 min. The percentage extraction in a single stage reached 99.80%. When 50 g/L Na2SO3 was used for stripping, the percentage stripping in one stage reached 82.45%, and gold was separated from iron by stripping operation.

关 键 词：酸性硫脲浸金液 回收 金 P507 溶剂萃取 萃取剂 

分 类 号：TF831[冶金工程—有色金属冶金]