Process for de-silvering of a silver-containing solution

US5759377A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Guy Damen · Kasterlee, BE
• Benny Jansen · Geel, BE
• Patrick Mertens · Vrasene, BE
• Werner Van De Wynckel · Mortsel, BE
• Paul Smet · Wilrijk, BE
• Frank Michiels · Arendonk, BE

Key dates

• Filing date: Jul 9, 1996
• Grant date: Jun 2, 1998
• Expiry date: Jul 9, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25C1/20
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A silver-containing solution is de-silvered in an electrolytic cell having an anode and a cathode. The diffusion limitation current density of the electrolytic cell is estimated by measuring a current flow there-through and silver is deposited on the cathode at a de-silvering current density which is lower than the diffusion limitation current density.