JOM

, Volume 37, Issue 7, pp 46–52

Pressure Hydrogen Stripping in Solvent Extraction

  • G. P. Demopoulos
  • P. A. Distin
Process & Extractive Metallurgy Overview
  • 31 Downloads

Abstract

This paper reviews pressure hydrogen stripping as applied on a laboratory scale to commercial solvent extraction reagents developed for the metals extraction industry. The chemistry of hydrogen stripping reactions is briefly described, and degree of stability under hydrogen stripping conditions is discussed for the various extractants studied.

Important details of those systems that showed promise under laboratory conditions are presented. Some characteristics of hydrogen stripping kinetics, and properties of the metal powders produced are also described. Finally, potential applications of hydrogen stripping are discussed.

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References

  1. 1.
    A.R. Burkin and J.E.A. Burgess, “Production of High Purity Metals Powders by Direct Pressure Reduction of Loaded Extractants,” Proc. 1st Annual Meeting of Canadian Hydrometallurgists, Montreal, Canada, Oct. 1971, pp. 51–62.Google Scholar
  2. 2.
    A.R. Burkin and J.E.A. Burgess, “Production of Metal Powders by Reduction of Loaded Extractants with Hydrogen,” Het Ingenieursblad, 41e jaargany, nr. 17, (1972), pp. 459–462.Google Scholar
  3. 3.
    A.J. Van der Zeeuw and L. Gandon, “Study of the Hydrogenation of the ‘Versatic’ Acid Salts of Copper, Nickel and Cobalt,” Proc. 10th Int. Mineral Processing Congress, London, U.K., 1973, pp. 1067–1083.Google Scholar
  4. 4.
    A.J. Van der Zeeuw and L. Gandon, “Study of the Hydrogenation of the ‘Versatic’ Acid Salts of Copper, Nickel and Cobalt,” Hydrometallurgy, G.A. Davies and J.B. Scuffharn, eds., Inst. Chem. Engrs., London, U.K., 1975, Symposium Series 42, 11, pp. 1–9.Google Scholar
  5. 5.
    M. Freifelder, “Practical Catalytic Hydrogenation: Techniques and Applications,” Wiley-Interscience, New York, NY, 1971, p. 66.Google Scholar
  6. 6.
    G.P. Demopoulos and P.A. Distin, “Copper Precipitation from Loaded Kelex 100 by Reaction with Hydrogen,” Proc. Int. Solvent Extraction Conference, ISEC ’80, Liège, Belgium, 2, Sept. 1980, No 80–76.Google Scholar
  7. 7.
    G.P. Demopoulos and P.A. Distin, “A Study of the Hydrogenation of Kelex 100 Loaded with Copper,” J. Chew. Terhn. and Biotechn., 33A, (1983), pp. 249–260.CrossRefGoogle Scholar
  8. 8.
    O.P. Demopoulos and P.A. Distin, “On the Structure and Composition of Kelex 100,” Hydrometallurgy, 11, (1983). pp. 389–396.CrossRefGoogle Scholar
  9. 9.
    M.G. Navarro and P.A. Distin, Unpublished work, Department of Mining and Metallurgical Engineering, McGill University, Montreal, Canada.Google Scholar
  10. 10.
    A.W. Ashbrook, “Commercial Chelating Solvent Extraction Reagents: 1. Purification and Isomer Separation of 2-Hydroxyoximes,” J. of Chrom., 105, (1975), pp. 141–150.CrossRefGoogle Scholar
  11. 11.
    M.C. Navarro and P.A. Distils, “Hydrogen Reduction of Copper from Loaded LIX65N,” 24th Annual Conference of Metallurgists, Met. Soc. CIM, Vancouver, Canada, Aug. 1985.Google Scholar
  12. 12.
    D. DeSantis and P.A. Distin, Unpublished work. Department of Mining and Metallurgical Engineering, McGill University, Montreal, Canada.Google Scholar
  13. 13.
    G.P. Demopoulos, Unpublished work, Extractive Metallurgy Laboratory, CANMET, Energy Mines and Resources, Ottawa, Canada.Google Scholar
  14. 14.
    G.P. Demopoulos and D.L. Gefvert, “Iron (III) Removal from Base-Metal Electrolyte Solutions by Solvent Extraction,” Hydrometallurgy, 12, (1984), pp. 299–315.CrossRefGoogle Scholar
  15. 15.
    R.X. Li and P.A. Distin, “Gold Reduction front Dibutyl Carbitol Using Hydrogen,” Proc. Int. Mineral Processing and Extractive Metallurgy Conference, Inst. Min. and Met., Chinese Soc. of Metals, Kunming, China, Oct. 1984, pp. 235–243.Google Scholar
  16. 16.
    RT. Morrison and R.N. Boyd, “Organic Chemistry,” 3rd ed., Allyn and Bacon, Inc., Boston, Mass., 1979, p. 559.Google Scholar
  17. 17.
    G. Pouskouleli and O.P. Demopoulos, “Direct Recovery of Precious Metals by Integration of Solvent Extraction and Hydrogen Reduction Techniques,” Proc. 8th Int. Precious Metals Conference, IPMI, Toronto, Canada, June 1984, in press.Google Scholar
  18. 18.
    G.P. Demopoulos and P.A. Distin, “Direct. Copper Precipitation from a Loaded Chelating Extractant by Pressure Hydrogen Stripping,” Metall. Trans., 1611, (1985), pp. 13–23.Google Scholar
  19. 19.
    D. DeSantis and P.A. Distill, “Hydrogen Reduction of Lead from Kelex 100,” 9th Canadian Metal Chemistry Conference. Kingston, Canada, June 1985.Google Scholar
  20. 20.
    R.N. Li, G.P. Demopoulos and P.A. Distin, “Nickel Recovery from Loaded Relax 100 by Precipitation using Hydrogen,” 20th Annual Conference of Metallurgists, Met. Soc. CIM, Hamilton, Canada, Aug. 1981Google Scholar
  21. 21.
    N.M. Stubina and P.A. Distill, “Direct Cobalt Recovery from Loaded Kelex 100 by Reaction with Hydrogen.” 21st Annual Conference of Metallurgists, Met. Soc. CIM, Toronto, Canada, Aug. 1982.Google Scholar
  22. 22.
    B. Meddings and V.N. Mackiw, “The Gaseous Reduction of Metals from Aqueous Solutions,” Unit Processes in Hydrornetallurgy, M.E. Wadsworth and F.T. Davies, eds., AIME, New York, N.Y., 1964, pp. 345–384.Google Scholar
  23. 23.
    M.M. Davis, “Bronsted Acid-Base Behavior in Inert. Organic Solvents,” The Chemistry of Non-Aqueous Solvents, J.J. Lagowski, ed., Academic Press, New York, N.Y., 3, 1970, pp. 10–11.Google Scholar
  24. 24.
    J. Halpern, “Homogeneous Catalytic Activation of Molecular Hydrogen by Metal Ions and Complexes,” J. Phys. Chem., 63, (1959) pp. 398–403.CrossRefGoogle Scholar
  25. 25.
    A.W. Ashhrook, “Chelating Reagents in Solvent Extraction Processes: The Present Position,” Coordination Chemistry Reviews, 16, (1975), p. 292.Google Scholar
  26. 26.
    H. Irving and H.S. Rossotti, “The Stabilities of Some Metal Complexes of 8-Hydroxyquinoline and Related Substances,” J. Chem. Soc., (1954), Part 3, pp. 2910–2918.Google Scholar
  27. 27.
    G.P. Demopoulos, “Direct Copper Production from a Loaded Chelating Extractant (an Alkylated 8-Hydroxyquinoline I by Pressure Hydrogen Stripping,” Ph.D. Thesis, McGill University, Montreal, Canada, 1982, pp. 181–183.Google Scholar
  28. 28.
    V.N. Mackiw, W.C. Tin and W. Kunda, “Reduction of Nickel by Hydrogen from Arnmoniacal Nickel Sulphate Solutions,” J. of Metals Trans. AIME, 9, (1957), pp. 791–793.Google Scholar
  29. 29.
    A.J. Van der Zeeuw, “Process for the Separation of Metals,” U.K. Patent 1,267,586, (1972).Google Scholar
  30. 30.
    J.E. Barnes and J.D. Edwards, “Solvent Extraction at inco’s Acton Precious Metals Refinery.” Chemistry and Industry, 10, (1982), pp. 151–155.Google Scholar

Copyright information

© TMS 1985

Authors and Affiliations

  • G. P. Demopoulos
  • P. A. Distin

There are no affiliations available

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