Process for separating metals from aqueous solutions

US4392962A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Klaus Lehr · Hürth, DE
• Gero Heymer · Lechenich, DE
• Christian May · Garching an der Alz, DE
• Hermann Klein · Trossingen, DE

Key dates

• Filing date: Nov 6, 1981
• Grant date: Jul 12, 1983
• Expiry date: Nov 6, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S210/914
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process for separating seminoble and/or noble metals from an aqueous solution having compounds of these metals dissolved therein by subjecting the solution to reaction with red phosphorus. More particularly, the solution is conveyed through a zone containing a layer of granular red phosphorus particles with a size of 0.01 to 10 mm, which may be used in admixture with active carbon.