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Development of A Novel Electrolytic Process for Metallic Fuel Reprocessing

Research Project

Project/Area Number 03558023
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Nuclear engineering
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

ITO Yasuhiko  Kyoto University, Faculty of Technology, Professor, 工学部, 教授 (20026066)

Co-Investigator(Kenkyū-buntansha) KOYAMA Masashi  Foundation, Central Research Institute of Electric Power, Senior Researcher, 狛江研究所, 主査研究員
MORITANI Kimikazu  Kyoto University, Faculty of Technology, Assistant, 工学部, 教務職員 (50111943)
MORIYAMA Hirotake  Kyoto University, Research Reactor Institute, Professor, 原子炉実験所, 教授 (90127150)
常磐井 守泰  (財)電力中央研究所, 金属燃料研究室, 室長
河野 益近  京都大学, 工学部, 教務職員
Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥17,900,000 (Direct Cost: ¥17,900,000)
Fiscal Year 1993: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1992: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1991: ¥9,500,000 (Direct Cost: ¥9,500,000)
Keywordsfast breeder reactor / metallic fuel cycle / molten salt electrolysis / lanthanide / actinide / intermetallic compound / zirconium / yttrium / ランタノイド / アクチノイド / 核分裂生成物 / リチウムガラス / 腐食 / 不働態化
Research Abstract

Presently, the metallic fuel cycle is regarded as one of the most innovative technologies for fast breeder reactor (FBR). The feasibility of the FBR depends on the development of a reprocessing technology. And, molten salt electrolytic process is a key process in this reprocessing technology. The present authors have already proposed a new type of electrolytic process which incorporates the use of gas electrodes and solid electrolytes, and studied its possibility from both fundamental and engineering aspects. Results are summarized as follows :
1)When various elements are electrochemically extracted from a molten salt to a liquid metal cathode, solid intermetallic compounds are formed at the interface between the salt and liquid metal. This was considered being an obstacle to the molten salt electrolytic process. Ni-Y intermetallic compound was selected as a model system and its formation reaction was carefully investigated. As a result, the Ni-Y intermetallic compound formation mechanism was revealed and the diffusion coefficients of yttrium in various intermetallic compounds were determined.
2)Diffusion coefficients of actinide and lanthanide ions in molten salts were measured by a capillary method. The dependence of the diffusion coefficients on temperature and ionic charge were discussed.
3)Molten salt electrochemical processes, such as metallizing of ceramics with zirconium and surface nitriding of titanium, were developed for high corrosion resistive materials to be used for molten salt electrolysis. Furthermore, a novel method to from high corrosion resistive nanometer order oxide layr on metal surfaces e.g., Ni was also developed.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] G.Xie, K.Ema and Y.Ito: "Electrochemical Formation of Ni-Y intermetallic Compound Layer in Molten Chloride" J.Appl.Electrochemistry. 23. 753-759 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 伊藤 靖彦、多田 正行: "溶融塩電気化学プロセスによる薄膜形成" セラミック. 28. 1224-1249 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Moriyama, K.Moritani and Y.Ito: "Diffusion Coefficient of Actnide and Lantanide Ions in Li_2BeF_4" J.Chem.Eng.Data. 39. 147-149 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.Xie, K.Ema and Y.Ito: "Electrochemical Formation of Ni-Y intermetallic Compound Layr in Molten Chloride" J.Appl.Electrochemistry. vol.23. 753-759 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Y.Ito and M.Tada: "Thin Film Formation in Molten Salts by Electrochemical Processing(in Japanese)" Ceramic(in Japanese). vol.28. 1224-1249 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Moriyama, K.Moritani and Y.Ito: "Diffusion Coefficient of Actnide and Lantanide Ions in Li_2BeF_4" J.Chem.Eng.Data. vol.39. 147-149 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.Xie,K.Ema,Y.Ito: "Electrochemical formation of Ni-Y intermetallic compound layer in molten chloride" J.Applied Electrochemistry. 23. 753-759 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 伊藤靖彦、多田正行: "溶融塩電気化学プロセスによる薄膜形成" セラミック. 28. 1244-1249 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] H.Moriyama,K.Moritani,Y.Ito: "Diffusion Coefficient of Actinide and Lanthanide Ions in Li_2BeF_4" J.Chem.Eng.Data. 39. 147-149 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] S.Hikino,Gang Xie,K.Ema,Zhan Min shou,and Y.Ito: "Electrochemical Behaviour of Yttrium Ion in LiCl-KCl-NaCl Eutectic Melt" J.Electrochem.Soc.139. 1820-1824 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] H.Moriyama,T.Seshimo,K.Moritane,and Y.Ito: "Pyrochemical Separation of Actinides and Fission Products" Proc.4th Japan-China Bilateral Conference on Molten Salt Chemistry and Technology. 83-86 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.Ito: "Electrochemistry of Yttrium in a Molten Chloride System" Proc.Internaitonal Symposium on Molten Salt Chemistry and Technology. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 河瀬 誠,多田 正行,伊藤 靖彦: "セラミック上へのZrおよびZr合金皮膜の電解形成" 表面技術. 44. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 多田 正行,伊藤 靖彦: "Thin Anodic Oxide Film Formation and Pitting Corrosion of Nickel in LiCl-KCl Eutectic Containing Oxide Ion" 電気化学および工業物理化学. 60. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yasuhiko Ito;Shinya Hikino;Keiko Ema: "Rotating Ring Disk Electrode in Molten Chloride Systems" Materials Science Forum. 73. 409-414 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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