少硫化物微细粒浸染型难处理金矿石提金试验研究  

Experimental study on micro fine disseminated refractory gold-bearing ore with low content of sulfur

作　　者：张国刚[1] 姚永楠[1] 邢志军[1] 郑晔[1] 

机构地区：[1]长春黄金研究院

出　　处：《黄金》2012年第10期37-40,共4页Gold

摘　　要：陕西某金矿原生矿石为少硫化物微细粒浸染型矿石,金矿物的粒度细小,赋存状态以包裹金为主,且含有砷、碳等有害元素,常规选冶方法金回收率较低。采用强化浮选—精矿压热氧化—氰化浸出提金工艺,金的浮选回收率为82.73%,浮选精矿金的氰化浸出率可达97.27%,金总回收率为80.47%,取得了较好的技术指标。Micro fine disseminated refractory gold-bearing ores occur as primary ores in a gold deposit in Shaanxi. Gold bearing minerals mainly take on small particle and inclusion form containing harmful elements like arsenic and carbon which make conventional processing methods less efficient. An enforced process of flotation-concentrates pres- sure oxidation-cyanide leaching gained a flotation recovery of 82.73 %, concentrates leaching rate of 97.27 % and a total recovery of 80.47 %, achieving good technique indexes.

关 键 词：难处理金矿石 压热氧化 生物氧化 氰化浸出 

分 类 号：TD953[矿业工程—选矿]