发明授权
- 专利标题: Electrolytic silver refining process and apparatus
- 专利标题(中): 电解银精制工艺及装置
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申请号: US642986申请日: 1984-08-22
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公开(公告)号: US4670115A公开(公告)日: 1987-06-02
- 发明人: Adalbert Prior , Rolf Marr , Hans J. Bart
- 申请人: Adalbert Prior , Rolf Marr , Hans J. Bart
- 申请人地址: ATX
- 专利权人: Ogussa Osterreichische Gold-und-Silber-Scheidean stalt Scheid und Roessler Gesellschaft m.b.H. & Co. KG
- 当前专利权人: Ogussa Osterreichische Gold-und-Silber-Scheidean stalt Scheid und Roessler Gesellschaft m.b.H. & Co. KG
- 当前专利权人地址: ATX
- 优先权: ATX3073/83 19840829
- 主分类号: C25C1/20
- IPC分类号: C25C1/20
摘要:
In an electrolytic silver refining process, crude silver is anodically dissolved while refined silver is cathodically deposited and at the accompanying (impurity) metals are selectively extracted from the used (spent) electrolyte and transferred to an aqueous phase. The used electrolyte is enriched in silver and accompanying metals are cathodically deposited and thus removed from the electrolyte. For this purpose, a specific electrolysis cell is provided. The cell being preferably a diaphragm cell with an anionic diaphragm. The extraction of the accompanying metals is achieved by liquid membrane permeation, preferably combined with solvent extraction.
公开/授权文献
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