从难处理含金黄铁矿中回收金的研究  

Research on recovery of gold from a refractory pyrite containing gold

作　　者：叶富兴[1] 

机构地区：[1]广州有色金属研究院

出　　处：《材料研究与应用》2010年第2期145-148,共4页Materials Research and Application

摘　　要：云南某金矿的金主要以包裹体状赋存于黄铁矿中，浮选硫精矿硫品位46．18％、金品位42．42g/t，采用火法焙烧一氰化浸出的工艺回收硫和金．将硫精矿在800℃焙烧3h脱硫，然后在矿浆液固质量比为2：1，用石灰调浆至pH=10，氰化钾用量1kg／t的条件下从烧渣中浸出金，获得硫回收率为99．79％，金浸出率为87．14％的指标．The gold of some gold deposit in Yunnan Province exisits in pyrite in the shape of inclusion. The sulfur grade 46.18 % and gold grade 42.42g/t is obtained by flotating sulfur concentrate. Sulphur and gold were extracted by the process of roasting-cyanide leaching. First the sulphur concentrate is roasted for 3h at 800 ℃, then the gold is leached under the conditions of pulp mass ratio of liquid to solid 2 ： 1, pH=10 and potassium cyanide usage 1 kg/t, finally the index of sulphur recovery 99. 79% and gold recovery 87. 14% are obtained.

关 键 词：硫精矿 火法焙烧 氰化浸出 

分 类 号：TM273[一般工业技术—材料科学与工程]