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    The extraction of platinum and palladium from a synthetic cyanide heap leach solution with strong base anion exchange resins

    Access Status
    Fulltext not available
    Authors
    Schoeman, E.
    Bradshaw, S.
    Akdogan, G.
    Snyders, C.
    Eksteen, Jacques
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Schoeman, E. and Bradshaw, S. and Akdogan, G. and Snyders, C. and Eksteen, J. 2017. The extraction of platinum and palladium from a synthetic cyanide heap leach solution with strong base anion exchange resins. International Journal of Mineral Processing. 162: pp. 27-35.
    Source Title
    International Journal of Mineral Processing
    DOI
    10.1016/j.minpro.2017.02.017
    ISSN
    0301-7516
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/52875
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Elsevier B.V.The use of ion exchange resins for the extraction of platinum and palladium from a synthetic cyanide leach solution is described in this paper. An increase in the concentrations of both platinum and palladium cyanide in solution from 0.15 to 0.45 mg/L and from 0.40 to 1.2 mg/L respectively resulted in higher equilibrium loadings while the first order constants remained constant. The solution pH did not have a significant effect on the equilibrium loading of platinum cyanide and palladium cyanide in the ranges 9 to 11. However, improvements in the loading kinetics of both these complexes were noticed with an increase in solution temperature from 30 to 60 °C. Changes in zinc cyanide and nickel cyanide concentrations in the range 5 to 20 mg/L did not have a significant effect on the adsorption of platinum cyanide and palladium cyanide. It was concluded that strong base anion exchange resins could effectively recover platinum and palladium cyanides from dilute synthetic cyanide solutions and that the exchange capacity and functionality of these ion exchange resins might have played an important role in their affinity for different metal anions in solutions.

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      © 2017 Elsevier B.V.The paper discusses the elution of platinum cyanide and palladium cyanide from strong base anion exchange resins, namely Amberlite PWA5 and Minix, with the use of acidic thiourea, potassium thiocyanate ...
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      Leaching of platinum and palladium with alkaline cyanide solutions has been shown to be feasible for a number of leach modes. The platinum and palladium leaching will typically take place at elevated temperatures, which ...
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