云南某难处理硫化银矿石氰化浸出试验研究  

Experimental study on cyanidation leaching of a silver sulfide ore from Yunnan Province

作　　者：宋强[1,2,3] 谢贤[1,2,3] 童雄[1,2,3] 彭伟[1,2,3] 

机构地区：[1]省部共建复杂有色金属资源清洁利用国家重点实验室 [2]昆明理工大学国土资源工程学院 [3]云南省金属矿尾矿资源二次利用工程研究中心

出　　处：《黄金》2017年第4期46-50,共5页Gold

基　　金：云南省应用基础研究计划项目(2014FA027);云南省选冶新技术重点实验室开放课题基金(xy2015kf01)

摘　　要：对云南某难处理硫化银矿石进行氰化浸出及锌粉置换工艺试验研究。通过对其影响因素进行探讨,得出最佳试验条件,且可获得68.41%的银浸出率,高于理论浸出率;将锌粉用质量分数1%的硝酸铅溶液浸泡10 min后,过滤清洗,再进行贵液置换,银的置换率达86.79%,指标相对较好,而锌粉的处理方式是影响贵液置换的关键因素。Experimental study on cyanidation leaching and zinc powder replacement process treating a silver sulfide ore from Yunnan Province is carried out. After discussion of its influence factors,the optimal conditions are obtained as well as a silver leaching grade of 68. 41 %,which is higher than the theoretical leaching rate. The zinc powder is soaked in lead nitrate solution with mass fraction of 1 % for 10 min and then filtered and cleansed before the replacement of the pregnant solution. The replacement rate of silver reaches 86. 79 %,which is good index. The zinc powder treatment manner is the key factor influencing pregnant solution replacement.

关 键 词：难处理硫化银矿石 氰化浸出 贵液 锌粉置换 置换率 

分 类 号：TD953[矿业工程—选矿]