Mechanochemical Approach for Oxide Reduction of Spent Nuclear Fuels for Pyroprocessing

• 영문명: 10.7733/jnfcwt.2021.19.2.255
• 발행기관: 한국방사성폐기물학회
• 저자명: Sung-Wook Kim Seung Youb Han Junhyuk Jang Min Ku Jeon Eun-Young Choi
• 간행물 정보: 『Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT)』Vol.19 No.2, 255~266쪽, 전체 12쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2021.06.30

국문 초록

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.

키워드

Spent nuclear fuel Pyroprocessing Oxide reduction Mechanochemical reaction