高效银电解设备在铅阳极泥回收银中的应用  

Application of High-efficiency Silver Electrolysis Equipment in Silver Recovery from Lead Anode Slime

作　　者：解维平 代昕璐 XIE Wei-ping;DAI Xin-lu

机构地区：[1]山东恒邦冶炼股份有限公司,山东烟台264109

出　　处：《有色冶金节能》2022年第1期14-17,共4页Energy Saving of Nonferrous Metallurgy

摘　　要：某冶炼厂采用人工水平方式浇铸银阳极板和利用传统船型银电解槽电解银阳极板,从而回收铅阳极泥中的银,存在占地面积大、占压资金多、生产成本高、操作环境差等诸多问题,急需引进新的高效银电解设备。本文介绍了立模人工浇铸阳极板、自动水平连铸阳极板、立式高效电解槽、无残极电解槽等设备的原理、优点及其应用。采用自动水平连铸阳极板配套立式高效电解槽及无残极电解槽的工艺回收银,残极率为5%~10%,比传统电解设备降低了15%,电流密度提高约70 A/m^(2),电流效率提高了约35%,节约了生产成本,产出的银粉品质符合国标要求,银粉含金量由16.5 g/t降至0.5 g/t,具有显著的经济效益。Manually horizontal casted silver anode plates and traditional ship-type silver electrolytic cells are adopted by a certain smelter to recover silver from lead anode slime by electrolysis,presenting multiple issues such as large footprint,large amounts of capital tied up,high production costs and poor operating environment,so it’s urgent to introduce new high efficiency silver electrolysis equipments.The principles,advantages and application of anode plates produced by manually vertical mould casting and automatically horizontal continuous casting,vertical high-efficiency electrolytic cells and no residuals anode electrolytic cells were introduced in this paper.The silver recovery process of automatically horizontal continuous casted anode plates together with vertical high-efficiency electrolytic cells and no residuals anode electrolytic cells,results in an anode scrap ratio of 5%~10%,down by 15%compared with traditional electrolysis equipment,an increase in current density by about 70 A/m^(2) and a rise in current efficiency by around 35%,saving production costs.The produced silver powder is up to the national standards and the gold content in it drops from 16.5 g/t to 0.5 g/t,leading to remarkable economic benefits.

关 键 词：银电解 银阳极板 立式电解槽 电流效率 水平浇铸 无残极电解槽 直收率 

分 类 号：TF832[冶金工程—有色金属冶金]