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%.
作者
盛艳玲
韩晓光
等
Sheng Yanling 1,Han Xiaoguang 2,Li Shan 1 (1.Beijing University of science and Technology; 2.Changchun Gold Research Institute)
出处
《黄金》
CAS
2003年第3期38-40,共3页
Gold
关键词
细菌氧化
预处理
硫化矿
bio-oxidation
pretreatment
sulphide ore
