Process for the production of oxide and carbide containing nuclear fuel particles for high temperature reactors

Patent · Tue Dec 25 04:00:00 EST 1973

OSTI ID:4362736

Hackstein, K G; Kadner, M; Foerster, H

Spherical oxide or carbide fuel particles of uranium and/or thorium are formed by dropping an aqueous salt solution of the heavy metal, e.g., uranyl and/ or thorium nitrate into an alkaline, preferably ammoniacal, precipitation bath. The solution also includes an organic polymer, preferably polyvinyl alcohol or partially hydrolyzed polyvinyl acetate, which delays the precipitation of the heavy metal compound in an alkaline medium. The polymer must be able to maintain the surface tension in spite of the precipitation of the uranium or thorium. The polymer is precipitated by an alcohol, e.g., primary or isopropyl alcohol followed by conventional drying, hardening, calcining, and sintering or melting the product. (Official Gazette)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-29-016145
• OSTI ID: 4362736
• Report Number(s): US 3781216
• Country of Publication: Germany
• Language: English

Related Subjects

*FUEL PARTICLES-- PRODUCTION
*HTGR TYPE REACTORS-- FUEL PARTICLES
AMMONIA
AQUEOUS SOLUTIONS
N50120* --Metals
Ceramics
& Other Materials--Ceramics & Cermets--Preparation & Fabrication
ORGANIC POLYMERS
POLYVINYLS
PRECIPITATION
PVA
THORIUM CARBIDES
THORIUM OXIDES
URANIUM CARBIDES
URANIUM OXIDES