摘要
内蒙古某黄金矿山金精矿中,金主要包裹在黄铁矿及砷黄铁矿中,同时还有锑金属硫化物的存在。氰化浸出生产工艺中金的回收率比较低,只有76.63%。通过常规氰化工艺条件优化试验,金的回收率最高可达到80.15%。对该低品位含砷、锑难处理金精矿进行碱浸预处理,优先除砷、锑,以提高金氰化浸出率。确定了生产操作的最佳工艺条件,金的氰化回收率由原来的76.63%提高到92%,试验获得了较好技术指标和经济效益。
Gold in the gold concentrates of a mine in Inner Mongolia is mainly wrapped in pyrite and arsenopyrite, and together with the existence of metallic antimony sulfide, cyanide leaching rate of gold in the production is relatively low, only 76.63 %. By optimization experiment of conventional cyanide process conditions, gold recovery rate can reach a max of 80.15 %, using alkaline leaching to pretreat the arsenic and antimony contained refractory gold concentrate, with the arsenic and antimony first removed, the cyanide leaching rate of gold increased from 76.63 % to 92 %, achieving satisfactory technical and economical index.
出处
《黄金》
CAS
2013年第3期61-64,共4页
Gold
关键词
含砷锑难处理金精矿
碱浸预处理
提高
回收率
arsenic and antimony contained refractory gold concentrate
alkaline leaching pretreatment
improvement
recovery rate
