有色金属科学与工程2025，Vol.16Issue(3)：357-366,10.DOI:10.13264/j.cnki.ysjskx.2025.03.004
钾、钠离子对氨法炼锌工艺的影响
Study on the impact of potassium and sodium ions on the ammonia method for zinc refining
摘要
Abstract
The effects of potassium and sodium ions on the zinc leaching rates within the ZnCl2-NH3-NH4Cl-H2O zinc refining process system were studied,the influence patterns of K+and Na+on the cathode throughout the electrodeposition process examined,and the impacts of K+and Na+on the quality of zinc coatings,current efficiency,power consumption,as well as the composition,structure,and morphology of these coatings throughout the electrodeposition process further explored.The findings demonstrate that the zinc leaching rate incrementally decreases as the concentration of K+and Na+in the solution increases in the leaching process.Throughout the electrodeposition process,with an increase in the concentration of K+and Na+in the electrolyte,the nucleation overpotential(NOP)value diminishes,the corrosion current density escalates,and the corrosion rate accelerates,culminating in diminished current efficiency,heightened power consumption,and a lowered zinc coating yield,which adversely affects the deposition of cathodic zinc.The increased concentrations of K+and Na+in the electrolyte will not only induce alterations in the morphology of the zinc coatings but may produce salt crystallization,which can accelerate electrode wear and corrosion.关键词
氨法炼锌/电化学/钾/钠Key words
ammonia method for zinc refining/electrochemistry/potassium/sodium分类
矿业与冶金引用本文复制引用
张思瑞,马冲,刘本华,张栋,吴春晗,陈菓,张帆..钾、钠离子对氨法炼锌工艺的影响[J].有色金属科学与工程,2025,16(3):357-366,10.基金项目
宁夏回族自治区重大科技成果转化资助项目(2022CJE09034) （2022CJE09034）
云南省教育厅科学研究基金资助项目(2021J0652) （2021J0652）
云南省科技厅基础研究计划资助项目(202201AU070044) （202201AU070044）
