CAJ | 학술논문

针对以电解法生产高纯银过程中杂质铜难以深度去除这一难题，在探明铜离子在银电解过程中的作用机制基础上，研究了以无铜离子电解体系电解银。试验结果表明：电解体系中无铜离子，通过添加试剂A、B，可以明显改善电解液的导电性能和电银粉的析出性能，电流效率提高6．5％，电银粉中铜质量分数低于0．0005％，产品质量符合IC-Ag99．99国家标准。
침대이전해법생산고순은과정중잡질동난이심도거제저일난제，재탐명동리자재은전해과정중적작용궤제기출상，연구료이무동리자전해체계전해은。시험결과표명：전해체계중무동리자，통과첨가시제A、B，가이명현개선전해액적도전성능화전은분적석출성능，전류효솔제고6．5％，전은분중동질량분수저우0．0005％，산품질량부합IC-Ag99．99국가표준。
Aiming at the problems of copper being hard to be further removed from electrolytic silver product ,the electrolytic silver using copper-ions free electrolyte was studied based on the copper ions action mechanism in silver electrolysis process .T he results show that no copper ions but adding reagents A and B in electrolyte ,the conductive properties of electrolyte and precipitation properties of electrolytic silver powder can be obviously improved ,current efficiency increases by 6 .5% ,and high purity silver product in which copper content is lower than 0 .000 5% can be acquired .