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    Thermodynamic Modelling for Process Control at the Kalgoorlie Nickel Smelter

    Access Status
    Fulltext not available
    Authors
    Tran, Ba P
    Grimsey, Eric
    Messner, Shoena A
    Date
    1996
    Type
    Conference Paper
    
    Metadata
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    Citation
    Tran, B.P. and Grimsey, E.J. and Messner, S.A. 1996. Thermodynamic Modelling for Process Control at the Kalgoorlie Nickel Smelter. In: Pickles, C. and Hancock, P. and Wynnycki, J. (ed), Proceedings of the International Symposium on Challenges in Process Intensification: Challenges in Process Intensification, 24-29 Aug 1996, Montreal, Quebec.
    Source Title
    Proceedings of the International Symposium on Challenges in Process Intensification
    Source Conference
    International Symposium on Challenges in Process Intensification
    ISBN
    0919086683
    9780919086685
    Faculty
    Faculty of Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/81626
    Collection
    • Curtin Research Publications
    Abstract

    WMC Ltd operates a flash furnace for the treatment of nickel concentrates at Kalgoorlie in Western Australia. A thermodynamically based model has been developed for the furnace to provide setpoints based on feed forward control with feed back correction. The model employs a non-stoichiometric method to predict the quantities of matte. slag and gas through a minimisation of the free energy of the system. It is designed to predict key process inputs such as total process oxygen, flux addition and process oil, to meet the process targets of matte grade, iron/silica ratio and slag temperature. The feed back is designed to trim the control through adjustment of the oxygen efficiency, heat loss from the reaction shaft and an iron/silica ratio offset. This paper provides an overview of the structure of the model and experience gained during its implementation.

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