难浸含砷金精矿两段生物氧化—氰化提金工艺试验研究  

Study on the two-stage biooxidation-cyanidation process in leaching refractory arsenious gold concentrates

作　　者：郑艳平[1] 祁玉海[1] 赵禧民 

机构地区：[1]长春黄金研究院 [2]中国黄金集团湖南矿业有限公司

出　　处：《黄金》2013年第3期50-53,共4页Gold

摘　　要：某难浸含砷金精矿中金矿物嵌布粒度极细,有92.00%呈次显微金(不可见)的形式存在,且金矿物嵌存状态以包裹金为主,占94.58%。对金精矿进行常规氰化浸出,金的浸出率仅为3.41%。通过采用两段生物氧化预处理—氰化提金工艺,金的浸出率提高到95.02%,比常规氰化提高了91.61%。The dissemination of gold mineral existing in the refractory arsenious gold concentrates is so fine that there are 92.00 % of them taking the form of submicroscopic gold （ not visible）, and 94.58 % of them are embedded inclusion gold. Conventional cyanide leaching of the concentrates only achieves a leaching rate of 3.41%. However, gold leaching rate can reach 95.02 % after applying the two-stage biooxidation-cyanidation process,which is 91.61% higher than conventional cyanide leaching process.

关 键 词：难浸金精矿 两段生物氧化 氰化提金 

分 类 号：TD953[矿业工程—选矿]