欢迎访问过程工程学报, 今天是

›› 2002, Vol. 2 ›› Issue (2): 0-0.

• 2 •    

P507从酸性硫脲浸金液中回收金

朱萍,古国榜,贾宝琼   

  1. 华南理工大学应用化学系,广州 五山 510640
  • 出版日期:2002-04-20 发布日期:2002-04-20

Recovery of Gold from Gold-leaching Acidic Thiourea Solution by P507 Extraction and Na2SO3 Stripping

ZHU Ping, GU Guo-bang, JIA Bao-qiong   

  1. South China University of Technology, Wushan, Guangdong 510640, China
  • Online:2002-04-20 Published:2002-04-20

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.

关键词: 金, 硫脲, 萃取, P507

Abstract: 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.

Key words: gold, thiourea, extraction, P507

中图分类号: