• 제목/요약/키워드: molten-salt

검색결과 371건 처리시간 0.024초

AN EXPERIMENTAL STUDY ON AN ELECTROCHEMICAL REDUCTION OF AN OXIDE MIXTURE IN THE ADVANCED SPENT-FUEL CONDITIONING PROCESS

  • Jeong, Sang-Mun;Park, Byung-Heung;Hur, Jin-Mok;Seo, Chung-Seok;Lee, Han-Soo;Song, Kee-Chan
    • Nuclear Engineering and Technology
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    • 제42권2호
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    • pp.183-192
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    • 2010
  • An electrochemical reduction of a mixture of metal oxides was conducted in a LiCl molten salt containing 3 wt% $Li_2O$ at $650^{\circ}C$. The oxide reduction was carried out by applying a current to an electrolysis cell, and the $Li_2O$ concentration was analyzed during each run. The concentration of $Li_2O$ in the electrolyte bulk phase gradually decreases according to Faraday's law due to a slow diffusion of the $O^{2-}$ ions. A hindrance effect of the unreduced metal oxides was observed for the reduction of the uranium oxide. Cs, Sr, and Ba of high heat-load fission products were diffused into and accumulated in the salt phase as predicted with thermodynamic consideration.