Recovery of cesium chloride from contaminated solutions

US4770861A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Klaus-Peter Koller · Bad Soden, DE
• Wilfried Schwab · Altentreptow, DE

Key dates

• Filing date: Feb 10, 1987
• Grant date: Sep 13, 1988
• Expiry date: Feb 10, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01D17/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Cesium chloride is recovered from used density gradient solutions by extraction of lipophilic and coloring components using a lipophilic solvent, subsequent extraction with a polar protic organic solvent, adding perchlorate ions to the extraction residue, and converting the precipitated cesium perchlorate into cesium chloride.