Search for dissertations about: "Refractory of the Steel Ladle"

Showing result 1 - 5 of 8 swedish dissertations containing the words Refractory of the Steel Ladle.

  1. 1. Growth and removal of inclusions during ladle refining

    Author : Mats Söder; Pär Jönsson; Hae-Geon Lee; KTH; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Meteorology; inclusions; steel; ladle; cluster growth; modelling; Meteorologi; Meteorology; Meteorologi;

    Abstract : The overall purpose of this thesis work has been to further our understanding of the growth and removal of inclusions in gas- and induction-stirred ladles. The primary focus has been on alumina inclusions.Growth mechanisms were studied using data from fundamental mathematical models of gas- and induction-stirred ladles. READ MORE

  2. 2. A Study on the Correlation between Ladle Glaze and Non-Metallic Inclusions in the Ladle Treatment

    Author : Minho Song; Du Sichen; Jerome P. Downey; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; non-metallic inclusions; ladle treatment; ladle glaze; tracer; tool steel; viscosity; activity; modelling; Al2O3-CaO-MgO-SiO2 system; Materials science; Teknisk materialvetenskap;

    Abstract : In the present thesis, the correlation between ladle glaze and non-metallic inclusions in the ladle treatment was studied. A number of industrial trials with full scale ladle and laboratory works were performed to investigate the inclusions in the ladle treatment. READ MORE

  3. 3. Formation of non-metallic inclusions and the possibility of their removal during ingot casting

    Author : Lars Ragnarsson; Sichen Du; Carlo Mapelli; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ingot casting; tool steel; inclusion; runner; refractory; erosion; casting powder; cold model; argon shroud; reoxidation; oxygen measurement; CFD; PIV; Metallurgical process engineering; Metallurgisk processteknik;

    Abstract : The present study was carried out to investigate the formation and evolution of non-metallic inclusions during ingot casting. Emphasize have been on understanding the types of inclusions formed and developed through the casting process and on the development of already existing inclusions carried over from the ladle during casting. READ MORE

  4. 4. A Study on the Reaction between MgO Based Refractories and Slag-Towards the Development of Carbon-free Lining Material

    Author : Huijun Wang; Sichen Du; Stuart Millman; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MgO refractory; lining material; carbon-free; clean steel; ladle glaze; slag penetration; dissolution mechanism; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : In present thesis, the fundamental studies on the reaction between MgO based refractories and slag were undertaken for the development of a carbon-free bonding MgO lining material. Alumina was selected as a potential binder material. Due to MgO-Al2O3 chemical reaction, the developed refractory was bonded by MgO·Al2O3 spinel phase. READ MORE

  5. 5. A Study on the Influence of Steel, Slag or Gas on Refractory Reactions

    Author : Sune Jansson; Pär Jönsson; Lauri Holappa; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallurgical process engineering; Metallurgisk processteknik;

    Abstract : During the production of steel the oxide inclusion content partly depends on the reaction of the melt with the furnace lining, the ladle lining and the pouring system. The refractory material may be eroded by the molten steel and slag as well as corroded through chemical reactions with the slag and molten steel and the deoxidation products. READ MORE