摘要
研究了用硫酸及盐酸-氯化镁体系从锌银渣中浸出银和锌。先用稀硫酸浸出锌银渣中的部分锌、铁,使银、铅富集在浸出渣中,再硫酸浸出渣用盐酸-氯化镁溶液浸出银、锌,然后用铁板置换回收浸出液中的银。考察了氯化镁浓度、浸出温度、浸出时间、液固体积质量比及其他因素对银浸出率的影响。试验结果表明,在最佳条件下,银回收率为85.26%,锌回收率为89.46%。
Leaching of zinc and silver from zinc-silver residue in sulfuric acid and hydrochloric acidmagnesium chloride system was studied.Zinc-silver residue was leached first using dilute sulfuric acid.The leaching solution was returned to leach zinc.The leaching residue was leached using HClmagnesium chloride solution,silver in leaching solution was replaced by iron plate.Influences of magnesium chloride concentration,leaching temperature,leaching time,ratio between liquid volume and solid mass,and others fractors on leaching rate of silver and zinc were investigated.The experimental results show that the recovery rate of silver and zinc are 85.26% and 89.46%,respectively under the optimum conditions.
出处
《湿法冶金》
CAS
北大核心
2014年第4期274-277,共4页
Hydrometallurgy of China
关键词
锌银渣
硫酸
盐酸-氯化镁体系
浸出
银
锌
zinc-silver residue
sulfuric acid
hydrochloric acid-magnesium chloride system
leaching
silver
zinc
