A study of stripping uranium complex from an amine extract with aqueous salt solutions

Authors

  • R. S. Jickling,

    1. Department of Chemistry and Chemical Engineering, University of Saskatchewan, Saskatoon, Sask
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  • Gerhard Diez,

    1. Department of Chemistry and Chemical Engineering, University of Saskatchewan, Saskatoon, Sask
    Current affiliation:
    1. c/o Dr. C. Otto and Co., 5413 Bendorf (Rhein), Germany
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  • A. B. Van Cleave,

    1. Department of Chemistry and Chemical Engineering, University of Saskatchewan, Saskatoon, Sask
    Current affiliation:
    1. Division of Natural Sciences, University of Saskatchewan, Regina, Sask
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  • W. J. Decovrsey

    1. Department of Chemistry and Chemical Engineering, University of Saskatchewan, Saskatoon, Sask
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Abstract

The organic phase produced by extraction of a uranium leach liquor with Amberlite LA-2 in kerosene was stripped of uranium in laboratory tests with solutions of NaCl and H2SO4 or solutions of Na2SO4. It was found that NaCI-H2SO4 stripping reduced considerably the effectiveness of the solvent for subsequent extraction, whereas Na2SO4 stripped the uranium content without any deleterious effect. Optimum Na2SO4 concentration and pH for stripping were determined. Phase separation time and entrainment losses appear satisfactory.

Abstract

Dans des essais de laboratoire avec des solutions de NaCl et H2SO4 ou des solutions de Na2SO4, on a séparé l'uranium de la phase organique résultant de l'extraction d'une liqueur de lessivage contenant de l'uranium au moyen de l'amberlite LA-2 en solution dans le kérosène. On a trouvé que l'emploi de NaCl et H2SO4 a diminué considérablement l'efficacité du solvant pour une extraction subséquente, tandis que l'extraction faite avec Na2SO4 a permis d'isoler l'uranium sans effet dommageable. On a déterminé la concentration de Na2SO4 et le pH qui convenaient le mieux pour la dite extraction. Le temps de séparation des phases et les pertes par entraǐnement se sont avérés satisfaisants.

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