某难处理硫化金精矿加压氧化—氰化浸金试验研究  

Experimental investigation on ssure oxidation-cyanide leaching process for refractory gold sulfide concentrates

作　　者：李奇伟[1] 陈奕然[1] 陈明军[1] 葛云松[1] 

机构地区：[1]云南黄金矿业集团股份有限公司研发中心

出　　处：《黄金》2013年第2期55-58,共4页Gold

摘　　要：对云南某难处理硫化金精矿进行加压氧化—氰化浸金试验研究,考察了加压氧化各因素对氰化浸金的影响。加压氧化最优条件为:固液比1∶4,木质素磺酸钠5 g/t,硫酸初始质量浓度10 g/L,温度190℃,压力2.0 MPa,反应时间4 h,搅拌转速450 r/min。金精矿经加压氧化—氰化浸出获得了97.55%的较高金浸出率。The pre-processing technique for a refactory gold concentrate from Yunnan Province by acid pressure preoxidation-cyanide leaching process was experimentally investigated. Effects of various factors on pressure preoxida- tion and gold extraction by cyanide leaching have been discussed. The optimal conditions for pressure preoxidation are like these： ratio of solid to liquid is 1：4, content of sodium lignin sulfonates 5 g/t,initial acidity 10 g/L,processing temperature 190 ℃ , pressure 2.0 MPa, processing time 4 h and stirring speed 450 rpm. The results showed that with the pressure preoxidation-cyanide leaching process, the leaching rate of gold reaches 97.55 %, a relatively high level.

关 键 词：难处理金精矿 加压氧化 氰化浸金 

分 类 号：TD953[矿业工程—选矿]