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    Recovery of Gold and Copper from Alkaline Cyanide-Starved Glycine Solutions Using Sulfide Precipitation and Ion-Exchange

    Deng Z 2021.pdf (12.94Mb)
    Access Status
    Open access
    Authors
    Deng, Zixian
    Date
    2021
    Supervisor
    Jacques Eksteen
    Elsayed Oraby
    Type
    Thesis
    Award
    PhD
    
    Metadata
    Show full item record
    Faculty
    Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/84799
    Collection
    • Curtin Theses
    Abstract

    A novel glycine-based leach system was recently proposed, and it has been proved to be effective for copper and gold extraction. The synergetic glycine-cyanide system is particularly effective for treating copper-gold resources. To further improve this process and pave the way to scale-up the process from bench-scale to pilot-scale testing, detailed studies of two recovery technologies i.e. sulfide precipitation and ion-exchange adsorption for gold and copper recovery from the cyanide-starved glycine system were investigated.

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    • Gold and copper leaching from gold-copper ores and concentrates using a synergistic lixiviant mixture of glycine and cyanide
      Oraby, E.; Eksteen, Jacques; Tanda, B. (2017)
      © 2017 Elsevier B.V.The presence of cyanide soluble copper in the cyanidation of gold-copper ores and concentrates significantly increases the cyanide consumption in order to achieve sufficient gold recovery. In addition, ...
    • Activated carbon adsorption of gold from cyanide-starved glycine solutions containing copper. Part 1: Isotherms
      Tauetsile, P.; Oraby, Elsayed; Eksteen, Jacques (2019)
      Cyanide-starved alkaline glycine solutions have been shown to have distinct advantages in terms of lower reagent consumption and detoxification needs, or leach rate and recovery, over cyanide- only and glycine-only leach ...
    • Gold leaching in cyanide-starved copper solutions in the presence of glycine
      Oraby, E.; Eksteen, Jacques (2015)
      © 2015 Elsevier B.V. Abstract In the cyanidation of copper-gold ores, the presence of copper minerals can lead to soluble gold losses, the production of weak acid dissociable (WAD) cyanide, as well as a number of operational ...
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