某难处理金矿石提金工艺试验研究  

Experimental study of gold extraction process for a refractory gold ore

作　　者：惠学德 王海东[2] 梁泽来[3] 

机构地区：[1]中国黄金集团科技有限公司,北京100176 [2]中国黄金集团公司,北京100011 [3]长春黄金研究院,长春130012

出　　处：《有色金属（选矿部分）》2011年第2期22-26,共5页Nonferrous Metals（Mineral Processing Section）

摘　　要：针对某含砷高、含碳高、硫化物含量低的微细粒浸染型难处理金矿石,进行了不同流程的提金工艺试验研究。对于金品位为2.98 g/t的原生矿,用常规氰化金的浸出率仅为0.68%;焙烧—氰化提金工艺,金的浸出率为80%左右;原矿浮选,金的浮选回收率为82.73%;浮选—金精矿生物氧化—炭浸提金工艺,金的总回收率74.72%;浮选—金精矿热压氧化—炭浸提金工艺,金的总回收率80.98%。For some high arsenic,high carbon,low sulphide,fine grained disseminated gold ore,several different processes of gold extraction process have been carried out.For primary ore with 2.98 g/t gold grade,conventional cyanide method can only obtain 0.68 % leaching rate.Roasting-cyanide process can reach 80 % gold extraction rate.Flotation of primary ore can reach 82.73 % gold recovery.Ore flotation——bio-oxidation of gold concentrate-carbon leaching can obtain a total gold recovery of 74.72 % e;Flotation-hot pressing oxidation of gold concentrate-carbon leaching can obtain 80.98 % gold recovery.

关 键 词：微细粒浸染 难处理矿石 原矿焙烧 生物氧化 热压氧化 

分 类 号：TD953[矿业工程—选矿]