RECOVERY OF URANIUM AND PLUTONIUM FROM SULFURIC ACID DECLADDING SOLUTIONS

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Uranium and plutonium were recovered by liquid-liquid extraction from simulated sulfuric acid stainless steel decladding solution with several extractants. Consecutive extraction of U(IV) and Pu(III) or (IV) by 0.1 to 0 3 M primary amine in hydrocarbon-- alcohol diluent appeared promising, and chemical flowsheets were demonstrated in laboratoryscale continuous countercurrent extraction. Extraction of U(VI) with a dialkylphosphoric acid appeared promising when plutonium recovery is not needed. Recovery is also chemically feasible by extraction of U(VI) and Pu(IV) with an N-benzyl secondary alkyl amine or a trialkylphosphine oxide. The amine extracts are stripped with nitric acid, giving a sulfate-nitrate product solution. ... continued below

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Pages: 46

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Horner, D.E. & Coleman, C.F. November 25, 1959.

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Uranium and plutonium were recovered by liquid-liquid extraction from simulated sulfuric acid stainless steel decladding solution with several extractants. Consecutive extraction of U(IV) and Pu(III) or (IV) by 0.1 to 0 3 M primary amine in hydrocarbon-- alcohol diluent appeared promising, and chemical flowsheets were demonstrated in laboratoryscale continuous countercurrent extraction. Extraction of U(VI) with a dialkylphosphoric acid appeared promising when plutonium recovery is not needed. Recovery is also chemically feasible by extraction of U(VI) and Pu(IV) with an N-benzyl secondary alkyl amine or a trialkylphosphine oxide. The amine extracts are stripped with nitric acid, giving a sulfate-nitrate product solution. The organophosphorus extractants permit elimination of the sulfate but require sodium carbonate for stripping. (auth)

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Pages: 46

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  • Other Information: Orig. Receipt Date: 31-DEC-60

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  • Report No.: ORNL-2830
  • Grant Number: W-7405-ENG-26
  • DOI: 10.2172/4207898 | External Link
  • Office of Scientific & Technical Information Report Number: 4207898
  • Archival Resource Key: ark:/67531/metadc1017238

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  • November 25, 1959

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  • Oct. 15, 2017, 10:09 p.m.

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  • Oct. 20, 2017, 2:44 p.m.

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Horner, D.E. & Coleman, C.F. RECOVERY OF URANIUM AND PLUTONIUM FROM SULFURIC ACID DECLADDING SOLUTIONS, report, November 25, 1959; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc1017238/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.