Nuclear Engineering and Technology

  • 제42권2호
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  • Pages.183-192
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  • 2010
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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AN EXPERIMENTAL STUDY ON AN ELECTROCHEMICAL REDUCTION OF AN OXIDE MIXTURE IN THE ADVANCED SPENT-FUEL CONDITIONING PROCESS

  • Jeong, Sang-Mun (Nuclear Fuel Cycle Development Group, Korea Atomic Energy Research Institute) ;
  • Park, Byung-Heung (Nuclear Fuel Cycle Development Group, Korea Atomic Energy Research Institute) ;
  • Hur, Jin-Mok (Nuclear Fuel Cycle Development Group, Korea Atomic Energy Research Institute) ;
  • Seo, Chung-Seok (Nuclear Fuel Cycle Development Group, Korea Atomic Energy Research Institute) ;
  • Lee, Han-Soo (Nuclear Fuel Cycle Development Group, Korea Atomic Energy Research Institute) ;
  • Song, Kee-Chan (Nuclear Fuel Cycle Development Group, Korea Atomic Energy Research Institute)
  • 투고 : 2009.05.26
  • 심사 : 2010.03.09
  • 발행 : 2010.04.30
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초록

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.

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참고문헌

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피인용 문헌

  1. O-LiCl Molten Salt vol.10, pp.4, 2012, https://doi.org/10.7733/jkrws.2012.10.4.229
  2. Direct electrochemical conversion of metal oxides to metal by molten salt electrolysis: a review vol.122, pp.4, 2013, https://doi.org/10.1179/0371955313Z.00000000069
  3. Alternate Anodes for the Electrolytic Reduction of UO2 vol.46, pp.1, 2015, https://doi.org/10.1007/s11661-014-2633-2
  4. Review—Metallic Lithium and the Reduction of Actinide Oxides vol.164, pp.8, 2017, https://doi.org/10.1149/2.0251708jes
  5. -48mol% NaCl Melt vol.160, pp.9, 2013, https://doi.org/10.1149/2.080309jes
  6. Thermodynamic investigation on the behavior of rare earth oxides during electrolytic reduction process vol.317, pp.2, 2018, https://doi.org/10.1007/s10967-018-5975-1