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    Reduction of Waste Smelter Slags using Top-submerged Injection of Gases

    Access Status
    Fulltext not available
    Authors
    Yan, X Yong
    Li, Nan
    Grimsey, Eric
    Date
    1996
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Yan, X.Y. and Li, N. and Grimsey, E. 1996. Reduction of Waste Smelter Slags using Top-submerged Injection of Gases. In: Proceedings of the 5th International Conference on Molten Slags, Fluxes and Salts '97, 5-8 Jan 1997, pp. 135-145, Sydney, NSW.
    Source Title
    5th International Conference on Molten Slags and Fluxes
    Source Conference
    5th International Conference on Molten Slags, Fluxes and Salts 97'
    ISBN
    1886362149
    Faculty
    Faculty of Science and Engineering
    School
    WASM: Minerals, Energy and Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/81587
    Collection
    • Curtin Research Publications
    Abstract

    The top-submerged injection method has been used to introduce methane and air mixtures into a waste smelter slag to reduce the dissolved nickel, cobalt and cuprous oxides. A number of parameters affecting the reduction rate have been investigated. These are total gas flowrate, methane to air ratio, temperature, slag composition, orifice size and immersion depth of the lance. The results show that the reduction is enhanced with increase in the methane-to-air ratio, and by using a smaller orifice and deeper immersion of the lance. The maximum metal reductions achieved were 90 percent for nickel, 70 percent for cobalt, and 55 percent for copper, with ten percent of the gas achieving equilibration with the slag under these conditions.

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