Process for the two-phase extraction of metal ions from phases containing solid metal oxides, agents and the use thereof

US5260039A · kind A · utility

Assignee

• Hendel Kommanditgesellschaft auf Aktien · DE

Inventors

• Werner Schwab · Monheim, DE
• Ralf Kehl · Goldkronach, DE

Key dates

• Filing date: Nov 12, 1991
• Grant date: Nov 9, 1993
• Expiry date: Nov 12, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process is disclosed for the two-phase extraction of metal ions from phases containing solid metal oxides, which is characterized in that the solid metal oxides are brought into contact with a hydroxamic acid, known per se, dissolved in a hydrophobic organic solvent, the phases containing the solid metal oxides and the organic phase are intensively intermixed over a sufficient contact time, after phase-splitting, the organic phase is separated and the metal ions are re-extracted from the organic phase in a manner known per se and processed. The extracting agent used therein and the use of this extracting agent are also disclosed.