Method of producing weakly acidic cation exchange resin particles charged with uranyl ions

US4279866A · kind A · utility

Assignee

• Kernforschungsanlage Lulich Gesellschaft mit beschrankter Haftung · DE

Inventors

• Helmut Ringel · Niederzier, DE
• Erich Zimmer · Jülich, DE
• Nabil Abdelmonem · Jülich, DE

Key dates

• Filing date: Jul 19, 1978
• Grant date: Jul 21, 1981
• Expiry date: Jul 19, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22B60/0265
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Weakly acidic cationic ion exchange resin particles are charged with uranyl ions by contacting the particles step wise with aqueous uranyl nitrate solution at higher uranium concentrations from stage to stage. An alkaline medium is added to the uranyl nitrate solution in each stage to increase the successive pH values of the uranyl nitrate solution contacting the particles in dependence upon the uranium concentration effective for maximum charging of the particles with uranyl ions.