某含铜金矿石氰化过程中铜的影响及解决途径  

Effect and Solution of Copper Oxide Dissolution on Cyanide Leaching Process of Copper-bearing Gold Ore

作　　者：邱显扬[1] 宋宝旭[1] 胡真[1] 何斌[2] 高起方 

机构地区：[1]广州有色金属研究院,稀有金属分离与综合利用国家重点实验室,广州510651 [2]云南黄金矿业集团股份有限公司,昆明650093

出　　处：《有色金属（冶炼部分）》2015年第8期50-53,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：云南省科技创新强省计划项目(2012IB022)

摘　　要：某含铜矿石采用全泥氰化浸出工艺回收金,金浸出率仅为88.21%、铜浸出率高达19%左右。为减少铜矿物溶解对氰化浸出过程的影响,提出了"控制氰根离子浓度减弱铜溶解"的技术思路,并通过分点添加氰化钠的方式来控制氰根离子浓度。工业应用结果表明,在不大范围改变原工艺流程的基础上,铜浸出率可有效降至1.93%,金浸出率提高至93.40%。Gold leaching rate of copper-bearing gold ore by cyanide leaching was only 88.21% due to dissolution of copper minerals,whose leaching rate is about 19%.In order to reduce effect of dissolution of copper minerals on cyanidation leaching,a novel technology to weaken copper minerals dissolution by＂carefully controlling concentrations of dissociative cyanide ions＂was put forward.Concentrations of dissociative cyanide ions were controlled by fractional adding of sodium cyanide.Industry application results show that copper leaching rate drops to 1.93%and gold leaching rate significantly rises to 93.40%without a big change of original technological process.

关 键 词：含铜金矿 金 氰化法 选择性浸金 

分 类 号：TF831[冶金工程—有色金属冶金]