微细粒含砷难处理金矿石提金工艺研究
Gold(2017)
Abstract
针对某微细粒含砷难处理金矿石性质,进行了金回收工艺试验研究.矿石中金品位4.14 g/t,砷品位1.80%,金属矿物以赤褐铁矿、毒砂为主.矿石中金的粒度较细,以显微金为主,约占矿石中金的66.67%.通过对单一浮选、浮选—氰化浸出、全泥氰化浸出等工艺流程进行探索试验表明:采用浮选—氰化浸出流程处理该矿石,金总回收率达84.82%,但金精矿中砷含量超标,可采用冶金方法进行后续金精矿降砷试验;采用原矿全泥氰化浸出流程,金回收率73.61%,浸渣中砷质量分数1.71%左右,指标相对较好.
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