Published June 2010 | Version v1
Journal article Metadata-only

Recycling process for sinter-active U3O8 powders

Creators

  • 1. Innovative Nuclear Fuel Division, Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

Description

The effect of the oxidation temperature of UO2 pellets on the powder properties of oxidized U3O8 powders has been investigated. The powder morphology, crystalline size, and BET surface area of recycled U3O8 could be modified by controlling the oxidation temperature of the UO2 pellets. Recycled U3O8 powder with a high BET surface area and a small particle size could be obtained by lowering the oxidation temperature. It was also found that this low-temperature-oxidized sinter-active U3O8 powder is effective in mitigating the density drop of the UO2 pellets when the recycled U3O8 powder is added. Moreover, the recycled powder acted as a grain-size-enlarging promoter in the UO2 pellets. (author)

Availability note (English)

Available from http://dx.doi.org/10.3327/jnst.47.538

Additional details

Identifiers

DOI
10.3327/jnst.47.538;

Publishing Information

Journal Title
Journal of Nuclear Science and Technology (Tokyo)
Journal Volume
47
Journal Issue
6
Journal Page Range
p. 538-541
ISSN
0022-3131

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
42000536
Subject category
S36: MATERIALS SCIENCE; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
BWR TYPE REACTORS; GRAIN SIZE; MORPHOLOGY; OXIDATION; PELLETS; POWDERS; PWR TYPE REACTORS; RECYCLING; SINTERING; SURFACE AREA; TEMPERATURE CONTROL; URANIUM OXIDES; URANIUM OXIDES U3O8
Descriptors DEC
ACTINIDE COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; CONTROL; ENRICHED URANIUM REACTORS; FABRICATION; MICROSTRUCTURE; OXIDES; OXYGEN COMPOUNDS; POWER REACTORS; REACTORS; SIZE; SURFACE PROPERTIES; THERMAL REACTORS; URANIUM COMPOUNDS; URANIUM OXIDES; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
16 refs., 6 figs.