从含银废催化剂中回收银和铼  

Recovery of Silver and Rhenium from Silver-Bearing Waste Catalyst

作　　者：赵雨 贺小塘 王欢 熊庆丰 吴喜龙 李勇 张选冬 王金营 

机构地区：[1]贵研资源(易门)有限公司,稀贵金属综合利用新技术国家重点实验室,贵研铂业股份有限公司,昆明650106

出　　处：《有色金属（冶炼部分）》2018年第1期52-54,63,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：云南省省院省校科技合作项目(2016IB002)

摘　　要：研究了溶解技术从废催化剂中回收银和铼的工艺。采用双氧水溶解铼,通过离子交换树脂吸附铼,铼回收率可达86.2%。考察了硝酸用量、反应温度等参数对银浸出效果的影响,当硝酸用量为1.6L,反应温度80℃时,银的溶解趋于平稳,采用电沉积回收银,银直收率可达93.21%,电沉积余液返回硝酸溶解步骤,银的总回收率大于99.6%,并实现了水的循环利用。Process to recover silver and rhenium from waste catalyst by dissolution technique was studied.Rhenium recovery rate is 86.2% after rhenium dissolution with hydrogen peroxide and rhenium extraction with ion exchange resin.The effects of nitric acid dosage and reaction temperature on leaching rate of silver were investigated.Silver recovery by electro-deposition is 93.21% under the optimum conditions including nitric acid dosage of 1.6 Land reaction temperature of 80 ℃.Total silver recovery rate is 99.6% above.Water recycling is realized when electrodeposition residue solution returns to nitric acid dissolution.

关 键 词：废催化剂 银 铼 回收 电沉积 

分 类 号：TF832[冶金工程—有色金属冶金]