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Title: Recovery of UO[sub 2]/PuO[sub 2] in IFR electrorefining process

Abstract

A process is described for converting PuO[sub 2] and UO[sub 2] present in an electrorefiner to the chlorides, by contacting the PuO[sub 2] and UO[sub 2] with Li metal in the presence of an alkali metal chloride salt substantially free of rare earth and actinide chlorides for a time and at a temperature sufficient to convert the UO[sub 2] and PuO[sub 2] to metals while converting Li metal to Li[sub 2]O. Li[sub 2]O is removed either by reducing with rare earth metals or by providing an oxygen electrode for transporting O[sub 2] out of the electrorefiner and a cathode, and thereafter applying an emf to the electrorefiner electrodes sufficient to cause the Li[sub 2]O to disassociate to O[sub 2] and Li metal but insufficient to decompose the alkali metal chloride salt. The U and Pu and excess lithium are then converted to chlorides by reaction with CdCl[sub 2].

Inventors:
;
Issue Date:
OSTI Identifier:
6898492
Patent Number(s):
5356605 A
Application Number:
PPN: US 7-967652
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; EDB-94-164489
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Patent File Date: 28 Oct 1992
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; PLUTONIUM DIOXIDE; CHLORINATION; ELECTROREFINING; REDUCTION; URANIUM DIOXIDE; CADMIUM CHLORIDES; LITHIUM; LITHIUM OXIDES; PLUTONIUM CHLORIDES; URANIUM CHLORIDES; ACTINIDE COMPOUNDS; ALKALI METAL COMPOUNDS; ALKALI METALS; CADMIUM COMPOUNDS; CADMIUM HALIDES; CHALCOGENIDES; CHEMICAL REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; ELECTROLYSIS; ELEMENTS; HALIDES; HALOGEN COMPOUNDS; HALOGENATION; LITHIUM COMPOUNDS; LYSIS; METALS; OXIDES; OXYGEN COMPOUNDS; PLUTONIUM COMPOUNDS; PLUTONIUM OXIDES; PROCESSING; REFINING; TRANSURANIUM COMPOUNDS; URANIUM COMPOUNDS; URANIUM OXIDES 050400* -- Nuclear Fuels-- Feed Processing

Citation Formats

Tomczuk, Z., and Miller, W.E. Recovery of UO[sub 2]/PuO[sub 2] in IFR electrorefining process. United States: N. p., 1994. Web.
Tomczuk, Z., & Miller, W.E. Recovery of UO[sub 2]/PuO[sub 2] in IFR electrorefining process. United States.
Tomczuk, Z., and Miller, W.E. Tue . "Recovery of UO[sub 2]/PuO[sub 2] in IFR electrorefining process". United States.
@article{osti_6898492,
title = {Recovery of UO[sub 2]/PuO[sub 2] in IFR electrorefining process},
author = {Tomczuk, Z. and Miller, W.E.},
abstractNote = {A process is described for converting PuO[sub 2] and UO[sub 2] present in an electrorefiner to the chlorides, by contacting the PuO[sub 2] and UO[sub 2] with Li metal in the presence of an alkali metal chloride salt substantially free of rare earth and actinide chlorides for a time and at a temperature sufficient to convert the UO[sub 2] and PuO[sub 2] to metals while converting Li metal to Li[sub 2]O. Li[sub 2]O is removed either by reducing with rare earth metals or by providing an oxygen electrode for transporting O[sub 2] out of the electrorefiner and a cathode, and thereafter applying an emf to the electrorefiner electrodes sufficient to cause the Li[sub 2]O to disassociate to O[sub 2] and Li metal but insufficient to decompose the alkali metal chloride salt. The U and Pu and excess lithium are then converted to chlorides by reaction with CdCl[sub 2].},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {10}
}