Recycling Process for Sinter-Active U3O8Powders

Autor: Kun Woo Song, Jae Ho Yang, Keon Sik Kim, Young Woo Rhee, Ki Won Kang
Rok vydání: 2010
Předmět:
Zdroj: Journal of Nuclear Science and Technology. 47:538-541
ISSN: 1881-1248
0022-3131
DOI: 10.1080/18811248.2010.9711976
Popis: 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.
Databáze: OpenAIRE