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    Towards sonic injection in Peirce-Smith converters: A computational fluid dynamics (CFD) Modelling Study

    Access Status
    Fulltext not available
    Authors
    Chibwe, D.
    Akdogan, G.
    Bradshaw, S.
    Bezuidenhoudt, G.
    Davis, J.
    Eksteen, Jacques
    Kapusta, J.
    Date
    2012
    Type
    Conference Paper
    
    Metadata
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    Citation
    Chibwe, D.K. and Akdogan, G. and Bradshaw, S.M. and Bezuidenhoudt, G.A. and Davis, J. and Eksteen, J.J. and Kapusta, J.P.T. 2012. Towards sonic injection in Peirce-Smith converters: A computational fluid dynamics (CFD) Modelling Study, in R.H. Schonewille and others (ed), 51st Annual Conference of Metallurgists, Sep 30 - Oct 03 2012, pp. 117-129. Niagara Falls, Canada: Metallurgy and Materials Society.
    Source Title
    Proceedings of 51st Annual Conference of Metallurgists 2012
    Source Conference
    51st Annual Conference of Metallurgists 2012
    ISBN
    978-1-926872-11-7
    URI
    http://hdl.handle.net/20.500.11937/20818
    Collection
    • Curtin Research Publications
    Abstract

    This research work forms part of an assessment to complement the feasibility of implementing high pressure sonic injection into relatively small (2.25 m I.D by 3.66 m I.L) Peirce-Smith converters (PSC) used at Lonmin Plc. Work has been carried out to characterize the fluid dynamics of three-phase (air, matte and slag) fluid flow in these converters using Computational Fluid Dynamics (CFD) simulations. The investigation has been done to study the flow pattern of the three phase system at high air pressure injection achieving sonic velocity at the tuyere exit into the converter. The 2-D and 3-D simulations of the three phase system were carried out using the volume of fluid (VOF) and realizable k - ε turbulence models to account for the multiphase and turbulence nature of the flow, respectively. These models were implemented using the commercial CFD numberical code FLUENT. A detailed study of the flow pattern has been presented in the form of contour plots and the results obtained are useful for understanding plume extension and velocity distribution, shear wall stress distribution, and phase distribution characteristics in the system. The results provide a basis for further development of sonic injection technology into relatively small industrial Peirce-Smith converters with the ultimate objective of achieving lower energy comsumption, improved process efficiency and increased throughput of the converting process.

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