锌电解体系中锰离子含量对阳极泥成核及生长机理研究  

Effect of Manganese Ion Concentration on the Nucleation and Growth Mechanism of Anode Slime in Zinc Electrolysis

作　　者：李回汉 田炳阳 高文成 温建康[1,2,3,4] LI Huihan;TIAN Bingyang;GAO Wencheng;WEN Jiankang(National Engineering Research Center for Environment-friendly Metallurgy in Producing Premium Non-ferrous Metals,China GRINM Group Co.,Ltd.,Beijing 101407,China;GRINM Resources and Environment Tech.Co.,Ltd.,Beijing 101407,China;General Research Institute for Nonferrous Metals,Beijing 100088,China;Beijing Engineering Research Center of Strategic Nonferrous Metals Green Manufacturing Technology,Beijing 101407,China)

机构地区：[1]中国有研科技集团有限公司高品质有色金属绿色特种冶金国家工程研究中心,北京101407 [2]有研资源环境技术研究院(北京)有限公司,北京101407 [3]北京有色金属研究总院,北京100088 [4]战略性有色金属绿色制造技术北京市工程研究中心,北京101407

出　　处：《有色金属(冶炼部分)》2025年第5期18-26,共9页Nonferrous Metals(Extractive Metallurgy)

基　　金：国家重点研发计划项目(2022YFC3900801);广西科技重大专项(桂科AA22068078)。

摘　　要：湿法炼锌行业电解锌的生产过程中,适宜的锰离子浓度有利于锌电解的生产,而过高的锰离子浓度则会促使阳极泥的产生,因此研究锰离子对锌电解中阳极泥成核及生长机理显得尤为重要。通过对铅银阳极板在160 g/L的Zn^(2+)电解液中加入不同浓度的Mn^(2+)进行电化学测试。对阳极板表面的阳极泥沉积形貌分析。结果表明,0~4 g/L的Mn^(2+)能够促进铅银阳极板在锌电解中的铅腐蚀,腐蚀电流密度变大,电解反应的阻抗减弱,电解体系的导电性增强;Mn^(2+)浓度提高到8 g/L,阳极板的铅腐蚀被抑制。4 g/L的Mn^(2+)浓度的电流效率最优,阳极泥量最小。In the process of zinc electrodeposition in zinc hydrometallurgy industry,a suitable manganese ion concentration is conducive to zinc electrolysis production,while excessive manganese ion concentration will contribute to the generation of anode slime.Therefore,it is particularly important to study the effect of manganese ion concentration on the nucleation and growth mechanism of anode slime in zinc electrolysis.Electrochemical tests were carried out by adding different concentrations of Mn^(2+)to lead-silver anode plates in 160 g/L Zn^(2+)electrolyte.The anode mud deposited on the surface of the anode plate was analyzed morphologically.The results show that Mn^(2+)from 0 to 4 g/L can promote the lead corrosion of lead-silver anode plates in zinc electrolysis,the corrosion current density become larger,the impedance of electrolysis reaction weakened,and the conductivity of electrolysis system is enhanced;The lead corrosion of the anode plates is suppressed by the increase of the Mn^(2+)concentration up to 8 g/L.The current efficiency is optimal for the Mn^(2+)concentration of 4 g/L,and the amount of anodic sludge is the smallest.

关 键 词：铅银阳极板 锌电解 锰离子 阳极泥 

分 类 号：TF813[冶金工程—有色金属冶金]