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Title: Lithium metal reduction of plutonium oxide to produce plutonium metal

Abstract

A method is described for the chemical reduction of plutonium oxides to plutonium metal by the use of pure lithium metal. Lithium metal is used to reduce plutonium oxide to alpha plutonium metal (alpha-Pu). The lithium oxide by-product is reclaimed by sublimation and converted to the chloride salt, and after electrolysis, is removed as lithium metal. Zinc may be used as a solvent metal to improve thermodynamics of the reduction reaction at lower temperatures. Lithium metal reduction enables plutonium oxide reduction without the production of huge quantities of CaO--CaCl.sub.2 residues normally produced in conventional direct oxide reduction processes.

Inventors:
 [1]
  1. (Livermore, CA)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
868321
Patent Number(s):
US 5118343
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
lithium; metal; reduction; plutonium; oxide; produce; method; described; chemical; oxides; pure; reduce; alpha; alpha-pu; by-product; reclaimed; sublimation; converted; chloride; salt; electrolysis; removed; zinc; solvent; improve; thermodynamics; reaction; temperatures; enables; production; huge; quantities; cao-cacl; residues; normally; produced; conventional; direct; processes; plutonium oxide; lithium oxide; lithium metal; reduction process; chloride salt; plutonium metal; reduction reaction; normally produced; chemical reduction; plutonium oxides; solvent metal; /75/

Citation Formats

Coops, Melvin S. Lithium metal reduction of plutonium oxide to produce plutonium metal. United States: N. p., 1992. Web.
Coops, Melvin S. Lithium metal reduction of plutonium oxide to produce plutonium metal. United States.
Coops, Melvin S. Wed . "Lithium metal reduction of plutonium oxide to produce plutonium metal". United States. doi:. https://www.osti.gov/servlets/purl/868321.
@article{osti_868321,
title = {Lithium metal reduction of plutonium oxide to produce plutonium metal},
author = {Coops, Melvin S.},
abstractNote = {A method is described for the chemical reduction of plutonium oxides to plutonium metal by the use of pure lithium metal. Lithium metal is used to reduce plutonium oxide to alpha plutonium metal (alpha-Pu). The lithium oxide by-product is reclaimed by sublimation and converted to the chloride salt, and after electrolysis, is removed as lithium metal. Zinc may be used as a solvent metal to improve thermodynamics of the reduction reaction at lower temperatures. Lithium metal reduction enables plutonium oxide reduction without the production of huge quantities of CaO--CaCl.sub.2 residues normally produced in conventional direct oxide reduction processes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}

Patent:

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