碱性硫脲浸金的研究现状与发展趋势  

Investigation Status and Development Trend of Leaching Gold with Alkaline Thiourea

作　　者：刘有才[1] 朱忠泗[1] 符剑刚[1] 李丽峰[1] 林清泉[1] 陈凯达[1] 李志辉[1,2] 

机构地区：[1]中南大学化学化工学院,长沙410083 [2]长沙矿冶研究院,长沙410012

出　　处：《贵金属》2013年第2期78-81,89,共5页Precious Metals

摘　　要：阐述了可能取代氰化浸金的高效、无毒碱性硫脲浸金的研究现状。相比酸性硫脲浸金,碱性硫脲浸金具有溶金选择性好,溶液的再生及净化工序相对容易等优点。阐明了碱性硫脲浸金原理及金在碱性硫脲溶液中的溶解机理,对碱性硫脲溶液中的稳定剂及氧化剂的选择做了详细探讨。最后,指明了碱性硫脲浸金所取得的成果及需要解决的问题,并展望了其发展趋势。The recent research progresses of gold leaching with alkaline thiourea solution were summarized. This method is efficient, nontoxic and the most possible to substitute for dissolving gold with cyanide solution. Comparing with gold leaching in acidic thiourea solution, the advantages of gold leaching by alkaline thiourea solution are good selectivity, easier to regenerate and to purify the lixiviums. The principles and mechanisms of gold leaching with alkaline thiourea solution were stated. Stabilizers and oxidants of gold leaching with alkaline thiourea solution were discussed in detail. In the end, the achievements and unresolved questions of gold leaching with alkaline thiourea solution were pointed out, and the developing trends were expected.

关 键 词：冶金技术 碱性硫脲 机理 稳定剂 氧化剂 浸金 

分 类 号：TF831[冶金工程—有色金属冶金]