Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    On the refractory nature of precious metal tellurides

    Access Status
    Fulltext not available
    Authors
    Dyer, Laurence
    Sauber, M.
    Dixon, D.
    Asselin, E.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Dyer, L. and Sauber, M. and Dixon, D. and Asselin, E. 2017. On the refractory nature of precious metal tellurides. Hydrometallurgy. 169: pp. 488-495.
    Source Title
    Hydrometallurgy
    DOI
    10.1016/j.hydromet.2017.03.009
    ISSN
    0304-386X
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/53805
    Collection
    • Curtin Research Publications
    Abstract

    An investigation into the factors inhibiting the leaching of precious metal tellurides in cyanide solutions and initial testing of possible methods to improve leach performance were conducted. Petzite (Ag3AuTe2) was the principle mineral examined, along with calaverite (AuTe2) and hessite (Ag2Te). Both electrochemical measurements and batch leach experiments were employed to verify findings. It was found that tellurium is not readily oxidised under standard cyanidation conditions and thus was impeding the extraction of the precious metal elements. While this appears to be the primary problem to be overcome in leaching telluride minerals (particularly calaverite and hessite), evidence of passivation (previously noted in multiple studies) by a Te-rich layer was also observed in leach tests. Both established and new approaches to improve the telluride mineral leaching were tested to examine their effectiveness and better understand the fundamental chemistry involved. While elevated pH remains the most effective approach, actually leaching tellurides faster than pure gold, small proportions of citrate improved recovery from the gold-bearing tellurides.

    Related items

    Showing items related by title, author, creator and subject.

    • Processing technologies for gold-telluride ores
      Zhang, Jian; Zhang, Y.; Richmond, William; Wang, H. (2010)
      Gold telluride ores are important gold refractory ores due to the presence of sulfides and other gangue materials. The classification and main physical properties of gold telluride ores were described, and possible treatment ...
    • A novel sequential heap leach process for treating crushed Platreef ore
      Mwase, James; Petersen, Jochen; Eksteen, Jacques (2014)
      A novel sequential heap leaching process has been identified as a possible alternative to the conventional concentrate–smelt–refine route for processing Platreef ore, a platinum group metals containing ore with palladium ...
    • Assessing a Two-Stage Heap Leaching Process for Platreef Flotation Concentrate
      Eksteen, Jacques; Mwase, J.; Petersen, J. (2011)
      The Platreef is a relatively rich ore body in terms of the presence of platinum group metals (PGMs) and base metals (BMs). It differs from the Merensky and UG2 ore bodies in that a significant portion of the PGMs are ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.