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http://dx.doi.org/10.7733/jnfcwt.2021.19.2.255

Mechanochemical Approach for Oxide Reduction of Spent Nuclear Fuels for Pyroprocessing  

Kim, Sung-Wook (Korea Atomic Energy Research Institute)
Han, Seung Youb (Korea Atomic Energy Research Institute)
Jang, Junhyuk (Korea Atomic Energy Research Institute)
Jeon, Min Ku (Korea Atomic Energy Research Institute)
Choi, Eun-Young (Korea Atomic Energy Research Institute)
Publication Information
Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT) / v.19, no.2, 2021 , pp. 255-266 More about this Journal
Abstract
Solid-state mechanochemical reduction combined with subsequent melting consolidation was suggested as a technical option for the oxide reduction in pyroprocessing. Ni ingot was produced from NiO as a starting material through this technique while Li metal was used as a reducing agent. To determine the technical feasibility of this approach for pyroprocessing, which handles spent nuclear fuels, thermodynamic calculations of the phase stabilities of various metal oxides of U and other fission elements were made when several alkaline and alkali-earth metals were used as reducing agents. This technique is expected to be beneficial, not only for oxide reduction but also for other unit processes involved in pyroprocessing.
Keywords
Spent nuclear fuel; Pyroprocessing; Oxide reduction; Mechanochemical reaction;
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Times Cited By KSCI : 3  (Citation Analysis)
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