从银电解废液中回收银试验研究  

Recovery of Silver From Waste Silver Electrolyte

作　　者：谭代娣 罗正波 张剑锋 张圣南 李家元 TAN Daidi;LUO Zhengbo;ZHANG Jianfeng;ZHANG Shengnan;LI Jiayuan(Jingui Silver Industry Co.,Ltd.,Chenzhou 423038,China;Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds and Applications,Chenzhou 423000,China;Chemical Biology and Environmental Engineering,Xiangnan University,Chenzhou 423000,China)

机构地区：[1]郴州市金贵银业股份有限公司,湖南郴州423038 [2]湘南稀贵金属化合物及其应用湖南省重点试验室,湖南郴州423000 [3]湘南学院化学生物与环境工程学院,湖南郴州423000

出　　处：《湿法冶金》2022年第2期113-116,共4页Hydrometallurgy of China

基　　金：湖南省科技创新引领项目(2020SK2021);湖南创新型省份建设郴州国家可持续发展议程创新示范区专项经费资助项目(2021sfq08)。

摘　　要：研究了用银电解阳极布袋洗水制备氧化银,并用此氧化银净化银电解废液回收银,考察了氧化银制备条件及银电解液净化条件对银回收率的影响。结果表明:制备氧化银时,n(NaOH)∶n(AgNO_(3))=1.2∶1为最佳;净化电解废液时,温度90℃、反应时间1.0 h为最佳。生产实践表明,采用此法可大大减少银的损失,银直收率提高至99%以上。Silver oxide is prepared using anode cloth bag washing water and used to purify waste electrolyte for recovery silver.The results show that suitable condition is n(NaOH)∶n(AgNO_(3))=1.2∶1 for preparing silver oxide,and temperature of 90℃and reaction time of 1.0 h for cleansing the waster electrolyte.The production practice shows that the method can reduce greatly silver loss amount and increase the silver direct yield to 99%.

关 键 词：银电解 废液 氧化银 银 回收 

分 类 号：TF832[冶金工程—有色金属冶金] TF803.27