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    • 2. 发明授权
    • Electrolytic silver refining process and apparatus
    • 电解银精制工艺及装置
    • US4670115A
    • 1987-06-02
    • US642986
    • 1984-08-22
    • Adalbert PriorRolf MarrHans J. Bart
    • Adalbert PriorRolf MarrHans J. Bart
    • C25C1/20
    • C25C1/20
    • 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.
    • 在电解银精炼过程中,粗银被阳极溶解,而精制银被阴极沉积,并且伴随(杂质)金属从所用(废)电解质中选择性提取并转移到水相中。 所使用的电解质富含银,伴随的金属被阴极沉积,从而从电解质中除去。 为此,提供了特定的电解槽。 电池优选为具有阴离子膜片的隔膜电池。 伴随金属的萃取通过液膜渗透实现,优选与溶剂萃取相结合。