某铜金精矿焙烧-酸浸-氰化综合回收金铜工艺研究  

Comprehensive Recovery of Gold and Copper from a Copper-bearing Gold Concentrate by a Roasting-acid leaching-cyanide leaching Process

作　　者：谭希发[1] 

机构地区：[1]紫金矿业集团股份有限公司紫金矿冶设计研究院,福建上杭364200

出　　处：《矿冶工程》2011年第1期47-50,共4页Mining and Metallurgical Engineering

摘　　要：对吉林某浮选铜金精矿进行了焙烧-酸浸-氰化浸出综合回收金、铜的试验研究。焙烧的最佳焙烧条件为:焙烧温度550℃,焙烧时间1.5 h。焙砂硫酸浸出的最佳条件为:酸浸温度75℃,酸浸时间4 h,初酸浓度40 g/L,液固比4。氰化浸金的最优条件为:氰化钠初始浓度3‰,氰化时间24 h,液固比2。试验结果表明,该工艺技术指标较好,金、铜浸出率分别为99.06%和97.63%。Using a flowsheet of roasting-acid leaching-cyanide leaching,experimental research on comprehensive recovery of gold and copper in a copper-bearing gold flotation concentrate from a Jilin gold mine was conducted.According to the test results,adopting the optimum roasting conditions with roasting temperature of 550 ℃ and duration of 1.5 h,the best sulfuric acid leaching parameters are leaching temperature of 75 ℃,duration of 4 h,initial acid dosage of 40 g/L and solid/liquid ratio of 4,and the best cyanide-leaching parameters are initial NaCN concentration of 3‰,leaching duration of 24 h and solid/liquid ratio of 2.It showed excellent technical indexes obtained,with the gold and copper extraction rate of 99.06% and 97.63%,respectively.

关 键 词：难处理金矿 焙烧 酸浸 氰化浸金 

分 类 号：TF111[冶金工程—冶金物理化学]