从难处理硫化银物料中提取银新工艺研究  

Study on Leaching Silver from Refractory Silver Sulfide Materials

作　　者：陈耿涛[1] 郭欢[1] 杨声海[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083

出　　处：《有色金属（冶炼部分）》2010年第2期38-41,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(50974138)

摘　　要：研究了硫氰酸铵水溶液氧压浸出-铁粉置换法从湿法炼锌热酸浸出渣浮选银精矿、硫化锰银矿脱锰后渣中提银新工艺。试验结果表明,浮选银精矿与脱锰渣的银浸出率分别为大于95%与接近88%。A new technique for extraction silver from silver sulfide materials,such as flotation concentrates of zinc hydrometallurgical hot-acid leaching residue and Mn-stripped residue of silver-manganese sulfide concentrate,have been investigated.This new method includes two processes,oxygen pressure leaching in ammonium thiocyanate solution and iron powder cementation.The results show that the leaching ratios of silver from silver flotation concentrates and Mn-stripped residues are more than 95% and about 88%,respectively.

关 键 词：硫氰酸铵 置换 脱锰渣 氧压 银 

分 类 号：TF832[冶金工程—有色金属冶金]