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Phase distribution of uranium in matrices obtained by co-melting basalt and uranium-containing aluminum oxideстатья
Дата последнего поиска статьи во внешних источниках: 6 октября 2021 г.
- Авторы: Martynov K.V., Kulemin V.V., Gorbacheva M.P., Kulyukhin S.A.
- Журнал: Annals of Nuclear Energy
- Том: 163
- Год издания: 2021
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Номер статьи: 108555
- DOI: 10.1016/j.anucene.2021.108555
- Аннотация: Safe disposal of nuclear waste is key to sustainable use of nuclear energy. Exploring safe and reliable disposal methods for nuclear waste has become a research hotspot. The phase distribution of uranium in matrices obtained by co-melting basalt and uranium-containing Al2O3 was examined for the development of a potential material for radioactive waste immobilization. The co-melting of basalt with UO3-containing Al2O3 produced matrices containing glass, plagioclase, and spinel as major phases. The highest uranium content (97 mass % UO3) was observed on the non-dissolved fragment of the Al2O3 grains. The titanium-containing complex oxide phase, supposedly, ilmenite, contained up to 62 mass % UO3. The glass phase exhibited an uneven distribution of uranium, with its content ranging ~ 5 to ~ 10 mass % UO3. Data on the leaching of uranium into H2O from the co-melt of basalt and UO3-containing Al2O3 were obtained.
- Добавил в систему: Кулюхин Сергей Алексеевич