银电解生产中非金属杂质元素硒的控制与实践  

Control and Practice of A Non-metallic Impurity Element-Selenium in Silver Electrolysis Production

作　　者：佘忠智 杨少坤 周兴 雷宇 余小江 刘祖涛 SHE Zhong-zhi;YANG Shao-kun;ZHOU Xing;LEI Yu;YU Xiao-jiang;LIU Zu-tao(Yunnan Dianjin Investment Co.,Ltd.,Yunnan Gold&Mineral Group Co.,Ltd,Kunming,Yunnan 650000,China)

机构地区：[1]云南黄金矿业集团云南滇金投资有限公司,云南昆明650000

出　　处：《云南冶金》2024年第2期89-93,共5页Yunnan Metallurgy

摘　　要：针对银电解生产中银粉硒元素单项超标的问题,通过电解机理研究与生产实践,全面优化了相关工艺控制参数,确定了高硒阳极板电解的电流强度(1100 A)、硝酸浓度(50 g/L)、电解液流量(2.5 m^(3)/h)等关键工艺控制参数,电解银粉中杂质硒含量超标的问题得到解决,银粉及银锭杂质含量符合国标1#银要求。Selenium element is a single item that exceeds the standard in silver powder in silver production,the relative process control parameters are fully optimized through electrolysis mechanism study and production practice,it confirmed the following parameters of high-selenium anode plate electrolysis:the strength of the current(1100 A),nitric acid concentration(50 g/L),electrolyte flow(2.5 m^(3)/h),and the other critical process control parameters,then it solved the exceeded impurity selenium in electrolytic silver powder,so the impurity content of silver powder and silver ingot can meet the 1#silver requirements of Guobiao.

关 键 词：银电解 杂质元素硒 酸度 流量 电流强度 

分 类 号：TF804.4[冶金工程—有色金属冶金] O613.52[理学—无机化学]