Method and apparatus for the electrolytic extraction of metals from a solution containing metal ions

US5372683A · kind A · utility

Assignee

• W. C. Heraeus GmbH · DE

Inventors

• Jochen-Werner Kuhn-von Burgsdorff · Bruchköbel, DE
• Ulrich Stroder · Goldbach, DE

Key dates

• Filing date: Nov 25, 1991
• Grant date: Dec 13, 1994
• Expiry date: Nov 25, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25C7/02
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

For the electrolytic extraction of metal from a solution containing metal ions and situated in a first cell, metal is cathodically deposited by means of an anode on an electrically conductive endless band immersed partially into the solution, and is redissolved anodically in the electrolyte of an adjacent second cell by partial immersion of the circulating endless band; the metal dissolved in the second cell is again deposited in high purity on a cathode.