某中硫含铜金矿石的细菌预氧化一堆浸提金试验研究  

Experimental study of bacteria pre-oxidation and heap-leaching of a medium-sulphur copper-bearing gold ore wrapped by sulphide

作　　者：盛艳玲[1] 韩晓光[2] 等 Sheng Yanling 1,Han Xiaoguang 2,Li Shan 1 (1.Beijing University of science and Technology; 2.Changchun Gold Research Institute)

机构地区：[1]北京科技大学 [2]长春黄金研究院

出　　处：《黄金》2003年第3期38-40,共3页Gold

摘　　要：河北某金矿矿石属中硫含铜难浸金矿石，其中包裹金含量达28.77%。该矿石常规全泥氰化金浸出率仅为51.78%。本试验在堆浸前对矿石进行了细菌氧化预处理，试验结果表明：0－5mm粒级矿石经45d氧化后，Fe的氧化率为28．16％，S的氧化率为25．43％，Cu的氧化率为44．62％，氰化堆浸金的浸出率可达80.35%。The mineral of a certain gold mine in Hebei province belongs to refactory medium-sulphur gold ore containing copper,of which the content of gold wrapped is about 28.77%.The conventional all-sliming cyaniding rate is only 51.78%.In the experment,the ore is pretreated by bacteria oxidation before heap leaching.The result of the experiment shows that after 45 days bio-oxidation,the removing rate of iron of the ore in 0～5mm grain size is 28.16%,while the removing rates of sulphur and copper are 25.43% and 44.62% respectively,Meanwhile the cyaniding heap-leaching rate of gold is up to 80.30%.

关 键 词：细菌氧化 预处理 硫化矿 

分 类 号：TD953[矿业工程—选矿]