Search for dissertations about: "secondary steelmaking"

Showing result 1 - 5 of 15 swedish dissertations containing the words secondary steelmaking.

  2. 1. Some Fundamental Aspects Concerning Secondary Steelmaking

    Author : Jimmy Gran; Du Sichen; Tooru Matsumiya; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Teknisk materialvetenskap;

    Abstract : The present thesis deals with some aspects concerning secondary metallurgy of steel where there is little or very inconsistent information in the literature. More specifically, it is devoted to the studies on high temperature phase equilibria in the Al2O3-CaO-MgO-SiO2 system, the formation of ladle glaze and the thermodynamics of magnesium in liquid iron. READ MORE

  4. 2. A Study of Different Methods for Inclusion Characterization towards On-line use during Steelmaking

    Author : Diana Janis; Pär Jönsson; Lauri Holappa; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; on-line method; PDA OES; electrolytic extraction; inclusions; clusters; nozzle clogging; secondary steelmaking;

    Abstract : The interest of gaining on-line information related to non-metallic inclusions during the steelmaking process has recently increased due to the development as well as the promising results of the Pulse Distribution Analysis with Optical Emission Spectroscopy method (PDA/OES). Even though, the time from sampling to presented results on inclusions is only about 5-10 minutes, the method has also shown limitations with respect to the determination of some inclusion characteristics. READ MORE

  5. 3. Formation of Inclusions and their Development during Secondary Steelmaking

    Author : Mikael Thunman; Du Sichen; Piotr Scheller; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallurgical manufacturing engineering; Metallurgisk produktionsteknik;

    Abstract : Al–O relations in iron were investigated. Pure iron with varying Al content was equilibrated at 1873 K. The oxygen content of iron with higher Al content than 1.0 mass % was found to be much lower than previous works, while the oxygen content for Al content less than 1 mass% was found to be slightly higher. READ MORE

  6. 4. Simulation of ladle lining and steel temperature in secondary steelmaking

    Author : Bekele Olika; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Abstract : .... READ MORE

  7. 5. Growth and Removal of Inclusions During Ladle Stirring

    Author : Mats Söder; KTH; []
    Keywords : inclusions; ladle; gas-stirring; induction-stirring; secondary refining; bubble flotation;

    Abstract : The growth and removal of inclusions in stirred ladles hasbeen studied. First, the importance of different growthmechanisms suggested in the literature were studied. Simulationresults from a fundamental model of an induction-stirred ladlehave been used as input in the calculations. READ MORE