Conversion Reactions of Metal Chlorides into Oxides with Boric Acid. Applicability to the Vitrification of Molten Salt Wastes.

• IKEDA Yasuhisa

  Kashiwa Laboratory, Institute of Research and Innovation To whom correspondence should be addressed.

• TAKASHIMA Yoichi

  Kashiwa Laboratory, Institute of Research and Innovation

• KOBAYASHI Hiroaki

  Power Reactor and Nuclear Fuel Development Corp.

• IGARASHI Hiroshi

  Power Reactor and Nuclear Fuel Development Corp.

Bibliographic Information

Other Title

• Applicability to the Vitrification of Molten Salt Wastes Generated in Pyro-reprocessing Process

Abstract

Conversion reactions of metal chlorides into oxides with boric acid (H₃BO₃) were studied to develop the method for vitrification of radioactive molten salt wastes generated in the pyroreprocessing process. Mixtures of metal chlorides and H₃BO₃ with appropriate compositions in Pt crucible were heated at 1, 000°C for 1h in an electric furnace, followed by rapid cooling to room temperature. The chloride compounds used were LiCl, NaCl, KCl, CsCl, SrCl₂, BaCl₂•2H₂O, and CeCl₃•6H2O. All chlorides other than CsCl were found to be transformed into oxides (borate glass) in the molar ratios of H₃BO₃/chlorides ?? 2. Furthermore, four-component systems, i.e., the mixtures of LiCl, KCl, NaCl (or SrCl₂, BaCl₂•2H₂O, CeCl₃•6H₂O), and H₃BO₃ were also examined in a similar manner. The borate glasses were found to be formed in the molar ratio of H₃BO₃/chlorides ?? 2.

Journal

• Journal of Nuclear Science and Technology

  Journal of Nuclear Science and Technology 32 (11), 1138-1145, 1995

  Atomic Energy Society of Japan

Keywords

• vitrification
• solidification
• mixture
• lithium chloride
• sodium chloride
• potassium chloride
• cesium chloride
• strontium chloride
• barium chloride
• cerium chloride
• boric acid
• borate glasses
• molten salts
• radioactive wastes
• pyro-reprocessing process

Details

• CRID: 1390282679072846464
• NII Article ID: 10002073612
• NII Book ID: AA00703720
• DOI: 10.3327/jnst.32.1138
• COI: 1:CAS:528:DyaK28XltVei
• ISSN: 18811248
• ISSN: 00223131
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed