锰银矿与含砷金矿同时浸出过程探讨  

Simultaneous Leaching of Mn-containing Silver Ore and As-containing Gold Ore

作　　者：袁明亮[1] 陈可 邱冠周[1] 

机构地区：[1]中南工业大学矿物工程系,长沙410083

出　　处：《化工冶金》2000年第2期179-182,共4页

基　　金：国家自然科学基金!(编号:59904007)

摘　　要：在硫酸体系中用两矿工艺同时浸出含砷金矿和锰银矿，以分解包裹金、银的毒砂和氧化锰矿物．由于毒砂和氧化锰可互为还原剂和氧化剂，因此该工艺降低了贵金属矿的预处理消耗．实验表明，在使用少量水溶性氧化剂ＮａＣｌＯ３的条件下，氧化锰、毒砂分解率分别为９６％和９２％；银、金的浸出率分别可达８５．４％和９３．５％，总回收率分别为８４．５％和９３％As-containing gold ore and Mn-containing silver ore were leached simultaneously by sulphuric acid to resolve FeAsS and MnO2. FeAsS and MnO2 can act as reductant and oxidant to each other, and the co-leaching technique reduces the leaching cost. The experiments showed that the resolution rate of MnO2 and FsAsO were 96% and 92% respectively, and the leaching rate of silver and gold were 85.4% and 93.5% respectively, under the condition of using small amount of water-soluble oxidant. The overall recovery rate of gold and silver are 93% and 84.5% respectively.

关 键 词：银矿 金矿 氧化锰 毒砂 浸出 

分 类 号：TF831.032[冶金工程—有色金属冶金] TF832.032