电化学连续净化法脱除硫酸锌溶液中的氯  

Chlorineion removal from zinc sulfate aqueous solution byelectrochemical continuous purification method

作　　者：李启坤 杨长江[1] 李灿 常军 LI Qikun;YANG Changjiang;LI Can;CHANG Jun(School of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;College of Material and Chemical Engineering,Tongren University,Tongren 554300,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]铜仁学院材料与化学工程学院,贵州铜仁554300

出　　处：《矿冶》2024年第5期662-669,共8页Mining And Metallurgy

基　　金：国家自然科学基金资助项目(51864042,51664040);昆明理工大学分析与测试基金资助(2022M20212202131,2023M20222202126);贵州省高等学校绿色冶金与过程强化重点实验室项目(黔教技[2023]026号);贵州省高层次创新型人才项目(黔科合平台人才-GCC[2023]050);贵州省基础研究计划项目(黔科合基础-ZK[2021])。

摘　　要：提出了一种从锌电积液中连续分离氯离子的电化学方法,并探究了分离氯离子的最佳工艺。结果表明:控制锌电积液在自制装置中的水力停留时间为5.6 min、电场场强为100 V·m^(-1)的条件下,可获得最好的分离效果及较低的能耗;分离比达到12.39,分离净化过程中的净化功耗仅为0.003519 kW·h·m^(-3),氯离子迁移效率达到36.40 mg·J^(-1);分离净化所得氯离子净化液中氯离子质量浓度低于100 mg·L^(-1),符合工业生产对锌电积液中氯离子含量的要求。该工艺净化深度高、稳定性良好,可满足湿法炼锌工艺中连续生产的需求,为湿法炼锌的净化除氯提供了一种新工艺。In this paper,an electrochemical continuous purification process for the separation of chloride ions from zinc electrowinning electrolyte is presented,and the optimum process conditions are investigated.The results show that the optimal separation efficiency and lower energy consumption occur when the hydraulic residence time of the electrolyte is 5.6 min and the electric field intensity is 100 V·m^(-1) in the home-made apparatus.When the separation ratio reaches 12.39,the purification power consumption during the process is 0.003519 kW·h·m^(-3),with a chloride ion migration efficiency of 36.40 mg·J^(-1).The mass concentration of chloride ions in the purified solution is less than 100 mg·L^(-1),which meets the requirement of chloride ion content in zinc electrowinning electrolyte of industrial production.The method achieves higher purification depth and stability in the separation of chloride ions,meeting the requirement of continuous production in zinc hydrometallurgy,while providing a new process for the zinc hydrometallurgy dechlorination.

关 键 词：湿法炼锌 锌电积液 氯离子 电化学方法 除氯 连续净化 

分 类 号：TD97[矿业工程—选矿] TF813[冶金工程—有色金属冶金] TQ15[化学工程—电化学工业]