STP472: Present Status and Technical Advances of Steelworks Lime for Basic Oxygen Furnaces in Germany

    Obst, Karl-Heinz
    Kalk/Dolomit für die Stahlindustrie, Kalksteinwerke GmbH u. Dolomitwerke GmbH, Wilhelmstr., Wülfrath

    Stradtmann, Jürgen
    Kalk/Dolomit für die Stahlindustrie, Kalksteinwerke GmbH u. Dolomitwerke GmbH, Wilhelmstr., Wülfrath

    Ullrich, Wolfgang
    Stahlwerksmetallurgie, August Thyssen-Hütte AG, Postfach, Duisburg

    König, Gert
    Feuerfeststoffe und Mineralogie, August Thyssen-Hütte AG, Postfach, Duisburg

    Pages: 20    Published: Jan 1970


    Abstract

    The effect of chemical analysis, grain composition, and reactivity of lime on slag formation and metallurgy of steelmaking is discussed. Test showed that reburning of soft burn lime may occur in the BOF. By using special lime, which is manufactured from lime and fluxes, it is possible to work against reburning and C2S-formation. The acceleration of lime dissolution and the resulting improvement of the metallurgical reactions lead to a reduction of the blowing time.

    Keywords:

    steelmaking, calcium oxide, combustion, reactivity, magnesium oxide, sulfur oxides, slags, metallurgical furnace, dissolving, grain size, fluxes, phosphorus inorganic compounds, evaluation, tests


    Paper ID: STP41941S

    Committee/Subcommittee: C07.05

    DOI: 10.1520/STP41941S


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