Published January 15, 1986 | Version v1
Patent Open

Procedure for the fabrication of ceramic fuel pellets with an adjustable structure

Creators

Description

The invention has been aimed at a procedure for the fabrication of ceramic fuel pellets with an adjustable structure preferably of UO2, PuO2, ThO2 and their mixtures. A control of the pore size and pore distribution as well as the grain size increase of fuel pellets with a stable burnup is possible without additional or complex procedure steps or devices. Before or during the milling the particle shaped fuel pellets have been added a mixture of polyethyleneglycol/polystyrene and/or polyvinylalcohol with component portions from 2 to 1 to 1 to 2 in a total amount of 0.5 - 2.0 percent in weight

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Additional titles

Original title (German)
Verfahren zur Erzeugung von keramischen Kernbrennstoffpellets einstellbarer Gefuegestruktur

Publishing Information

Imprint Pagination
9 p.
IPC:
Int. Cl. G21c 3/62.
IPC
Int. Cl. G21c 3/62.
Patent number
DD patent document 232135/A/

INIS

Country of Publication
German Democratic Republic
Country of Input or Organization
German Democratic Republic
INIS RN
17069142
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Descriptors DEI
CERAMICS; CRUSHING; FABRICATION; FUEL PELLETS; GRAIN GROWTH; GRAIN SIZE; MIXTURES; PLUTONIUM DIOXIDE; POLYETHYLENE GLYCOLS; POLYSTYRENE; POROSITY; PVA; SINTERED MATERIALS; SPATIAL DISTRIBUTION; SPECIFICATIONS; THORIUM OXIDES; URANIUM DIOXIDE
Descriptors DEC
ACTINIDE COMPOUNDS; ALCOHOLS; CHALCOGENIDES; CRYSTAL STRUCTURE; DISPERSIONS; DISTRIBUTION; HYDROXY COMPOUNDS; MATERIALS; MECHANICAL FRAGMENTATION; MICROSTRUCTURE; ORGANIC COMPOUNDS; ORGANIC POLYMERS; OXIDES; OXYGEN COMPOUNDS; PLUTONIUM COMPOUNDS; PLUTONIUM OXIDES; POLYMERS; POLYOLEFINS; POLYVINYLS; SIZE; THORIUM COMPOUNDS; TRANSURANIUM COMPOUNDS; URANIUM COMPOUNDS; URANIUM OXIDES