自多金属精矿中综合回收金银铜铅的清洁工艺  

COMPREHENSIVE RECOVERY OF GOLD, SILVER, COPPER AND LEAD FROM COMPLEX CONCENTRATES

作　　者：石伟[1] 夏光祥[1] 涂桃枝[1] 韩宝玲[1] 

机构地区：[1]中国科学院化工冶金研究所,北京100080

出　　处：《化工冶金》1999年第4期415-419,共5页

摘　　要：对于含金银铜铅的浮选精矿，为综合回收其中的这些金属，经过多种湿法方案的对比，以氨浸脱钢－酸溶解脱铅－氰化提金工艺为优，金、银、铜、铅的回收率分别可达95％，85％，90％及98％．该工艺氧化氨浸脱铜在80℃及80kPa下操作，工艺简单，金属综合口收率高，易于工程实施，主要试剂（氨、二氧化碳及硝酸）可循环使用，对环境污染小，是一种清洁的生产工艺．A clean process of recovering gold, silver, copper and lead from complexconcentrates is studied. This Process consists of three sections: (1) oxidation leaching of Cuin ammonia solution, (2) leaching Pb with nitric acid and (3) leaching Au, Ag with cyanide.The recovery rates of gold, silver, copper and lead are 95%, 85%, 90% and 98% respectively.Oxidation leaching of Cu in ammonia solution is operated at 80℃ and 80 kpa, with theadvantage of simple technology and easy application to industrial processing. Ammonia, carbonbioxide and nitric acid can be recycled into the process.

关 键 词：多金属精矿 综合回收 银 金 铜 铅 清洁工艺 

分 类 号：X383[环境科学与工程—环境工程] TF803.2[冶金工程—有色金属冶金]