利用锌冶炼过程中的铅银浮渣回收银  

Recovery of silver from lead-silver dross in zinc smelting process

作　　者：孙明生[1] 陈鹏[1] 杜敏[1] 甄勇[1] 

机构地区：[1]巴彦淖尔紫金有色金属有限公司,内蒙古巴彦淖尔015543

出　　处：《中国有色冶金》2012年第5期34-36,共3页China Nonferrous Metallurgy

摘　　要：铅银浮渣生产硫酸铅过程中形成的氯化银沉淀含银仅为10%～20%,本文采用硫代硫酸钠浸出-锌粉置换工艺从低品位氯化银中回收银,并研究了最佳工艺控制条件。采用此工艺获得的银纯度可达99.90%以上,符合国标IC-Ag99.90牌号银标准。The silver content in silver chloride precipitation that produced in process of lead sulfate production with lead-silver dross is only 10%~20%.The silver was recovered from low-grade silver chloride with the method of sodium thiosulfate leaching-zinc powder replacement process/The optimal process control conditions was studied. The silver purity would reach over 99.90%after applying this process,and the purity accord with the international standard of silver branch IC-Ag99.90.

关 键 词：锌冶炼 铅银浮渣 氯化银 锌粉置换 硫代硫酸钠 浸出 银 

分 类 号：TF813[冶金工程—有色金属冶金]