Application of lithium in molten-salt reduction processes.

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Metallothermic reductions have been extensively studied in the field of extractive metallurgy. At Argonne National Laboratory (ANL), we have developed a molten-salt based reduction process using lithium. This process was originally developed to reduce actinide oxides present in spent nuclear fuel. Preliminary thermodynamic considerations indicate that this process has the potential to be adapted for the extraction of other metals. The reduction is carried out at 650 C in a molten-salt (LiCl) medium. Lithium oxide (Li{sub 2}O), produced during the reduction of the actinide oxides, dissolves in the molten salt. At the end of the reduction step, the lithium is ... continued below

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9 p.

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Gourishankar, K. V. November 11, 1998.

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Description

Metallothermic reductions have been extensively studied in the field of extractive metallurgy. At Argonne National Laboratory (ANL), we have developed a molten-salt based reduction process using lithium. This process was originally developed to reduce actinide oxides present in spent nuclear fuel. Preliminary thermodynamic considerations indicate that this process has the potential to be adapted for the extraction of other metals. The reduction is carried out at 650 C in a molten-salt (LiCl) medium. Lithium oxide (Li{sub 2}O), produced during the reduction of the actinide oxides, dissolves in the molten salt. At the end of the reduction step, the lithium is regenerated from the salt by an electrowinning process. The lithium and the salt from the electrowinning are then reused for reduction of the next batch of oxide fuel. The process cycle has been successfully demonstrated on an engineering scale in a specially designed pyroprocessing facility. This paper discusses the applicability of lithium in molten-salt reduction processes with specific reference to our process. Results are presented from our work on actinide oxides to highlight the role of lithium and its effect on process variables in these molten-salt based reduction processes.

Physical Description

9 p.

Notes

INIS; OSTI as DE00010899

Medium: P; Size: 9 pages

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  • 1999 TMS Annual Meeting, San Diego, CA (US), 02/28/1999--03/04/1999

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  • Report No.: ANL/CMT/CP-96895
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10899
  • Archival Resource Key: ark:/67531/metadc625741

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  • November 11, 1998

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  • June 16, 2015, 7:43 a.m.

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  • April 11, 2017, 7:29 p.m.

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Gourishankar, K. V. Application of lithium in molten-salt reduction processes., article, November 11, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc625741/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.