用溴盐氧化法从矿石中浸出金试验研究  

Leaching of Gold by Bromide Oxidation From Ore

作　　者：杨炯 YANG Jiong(Test Center of Hanzhong Geological Brigade of Shaanxi Geological Mining Group,Hanzhong 723000,China)

机构地区：[1]陕西地矿汉中地质大队检测中心,陕西汉中723000

出　　处：《湿法冶金》2020年第4期285-288,共4页Hydrometallurgy of China

摘　　要：研究了用溴盐(NaBr)、氧化剂(YA)和配合剂(NaCl)从矿石中氧化浸出金,考察了溴盐、氧化剂、配合剂用量、体系pH、浸出时间对金浸出率的影响。结果表明:对于100 g矿石,在固液质量体积比1/3、NaBr浓度0.146 mol/L、YA浓度0.071 mol/L、NaCl浓度0.342 mol/L、浸出时间8 h、溶液pH=6、反应温度17~25℃条件下,金浸出率超过92.4%,浸出效果较好。Bromide(NaBr),oxidant(YA)and complexing agent(NaCl)are used to leach gold from ore.The effects of usages of bromide,oxidant and complexing agent,system pH and leaching time on leaching of gold were examined.The results show that for the ores of 100 g,under the conditions of solid mass-to-liquid volume of 1/3,NaBr concentration of 0.146 mol/L,YA concentration of 0.071 mol/L,NaCl concentration of 0.342 mol/L,leaching time of 8 h,solution pH of 6 and reaction temperature of 17~25℃,the leaching of gold is over 92.4%,and the leaching effect is good.

关 键 词：非氰化浸出 溴盐 氧化剂 金 

分 类 号：TF831[冶金工程—有色金属冶金] TF803.21