Method for the manufacture of (U,Pu)O.sub.2 mixed crystals

US4235740A · kind A · utility

Assignee

• Alkem GmbH · DE

Inventors

• Wolf-Gunther Druckenbrodt · Rodenbach, DE
• Siegfried Baumann · Vöcklabruck, AT
• Roland Krause · Friedrichshafen, DE
• Wolfgang Stoll · Hanau, DE

Key dates

• Filing date: Mar 13, 1979
• Grant date: Nov 25, 1980
• Expiry date: Mar 13, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S376/901
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Manufacture of uranium/plutonium oxide mixed crystals soluble in nitric acid in which a solution of uranium nitrate and plutonium nitrate are oxidized to cause the plutonium to reach valence VI. The oxidized solution is admixed with ammonium carbonate, oxalate or carbamate and the pH adjusted to 8.1 to 8.5 to precipitate an ammonium uranyl plutonyl carbonate, oxalate or carbamate. The precipitate is calcined to uranium/plutonium oxide.