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Study of the behavior of cesium and strontium in co-melting basalt and silica gel containing cesium or strontium nitrates for the development of a potential material for radioactive waste immobilizationстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
- Авторы: Martynov K.V., Kulemin V.V., Kulyukhin S.A.
- Журнал: Progress in Nuclear Energy
- Том: 164
- Год издания: 2023
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 104855
- DOI: 10.1016/j.pnucene.2023.104855
- Аннотация: The work studied the distribution of cesium and strontium in cast stone matrices obtained by co-melting basalt and silica gel (hereinafter SiO2) containing cesium and strontium nitrates, respectively. Co-melting basalt and CsNO3-containing SiO2 at a basalt/SiO2 initial mass ratio of 5 : 1 produced cast stone matrices, in which the main phases were Cr-Fe spinel and glass. The glass phase showed almost an even distribution of cesium, whereas the spinel phase was virtually free of cesium. Co-melting basalt and CsNO3-containing SiO2 at an initial mass ratio of 2 : 1 yielded matrices which, apart from Cr-Fe spinel and glass, included pollucite, clinopyroxene, and Ti-containing magnetite phases. The major amount of cesium was found in the pollucite phase, where it mainly occurred in parts containing SiO2. Some amount of cesium was found in the glass phase. The other crystal phases found in the matrix were virtually free of cesium. Co-melting basalt and Sr(NO3)2-containing SiO2 at their initial mass ratio of 5 : 1 produced cast stone matrices with Cr-Fe spinel and glass as main phases. The process yielded two types of glass: one rich in Ca and the other in Sr. Strontium was mainly found in the glass phases. The spinel phase was virtually free of strontium. Co-melting basalt and Sr(NO3)2-containing SiO2 at their initial mass ratio of 2 : 1 produced cast stone matrices which, apart from Cr-Fe spinel and two glasses, included magnetite and olivine phases. Strontium was mainly found in the glass phases. The magnetite, olivine, and Cr-Fe spinel phases were virtually free of strontium.
- Добавил в систему: Кулюхин Сергей Алексеевич