Sökning: "metallurgical slag"

Visar resultat 6 - 10 av 60 avhandlingar innehållade orden metallurgical slag.

  1. 6. Influence of Ladle-slag Additions on BOF-Process Parameters

    Författare :Anders Dahlin; Pär G. Jönsson; Joel Gustavsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; BOF; slag formation; ladle slag; recycling; steel; composition; energy; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning : The influence of ladle-slag additions on the BOF-process performance were investigated in plant trials. The aim of the study was to recycle ladle slag from secondary steelmaking to the LD-converter to save lime and improve the slag formation. LÄS MER

  3. 7. A Study of EAF Austenitic and Duplex Stainless Steelmaking Slags Characteristics

    Författare :Saman Mostafaee; Margareta Andersson; Pär Jönsson; Nzotta Mselly; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EAF; Slag; Duplex steel; 304L stainless steel; Characterization; Microstructural evolution; Spinels; Basicity; Computational thermodynamics; Slag foaming; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik;

    Sammanfattning : The high temperature microstructure of the solid phases within the electric arc furnace (EAF) slag has a large effect on the process features such as foamability of the slag, chromium recovery, consumption of the ferroalloys and the wear rate of the refractory. The knowledge of the microstructural and compositional evolution of the slag phases during the EAF process stages is necessary for a good slag praxis. LÄS MER

  4. 8. Microwave contact free measurements in metallurgical processes

    Författare :Donald Malmberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; metallurgical processes; antenna; level measurements; microwave; signal analysis; gas analysis; slag thickness measurements; refractive index;

    Sammanfattning : .... LÄS MER

  5. 9. A Study of EAF High-Chromium Stainless Steelmaking Slags Characteristics and Foamability

    Författare :Saman Mostafaee; Pär Jönsson; Margareta Andersson; Malin Selleby; Lauri Holappa; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-chromium stainless steel; EAF; Slag; Microstructural characterization; Microstructural Evolution; Computational thermodynamics; Solid particles; Viscosity; Foamability; Basicity; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning : A good slag practice is essential for production of a high-quality stainless steel. In addition, the electrical and material efficiency of the electric arc furnace (EAF) can considerably be improved by a good slag practice. The metallurgical properties of the slag are strongly influenced by its high-temperature microstructure. LÄS MER

  7. 10. Fundamental Experimental and Numerical Investigation Focusing on the Initial Stage of a Top-Blown Converter Process

    Författare :Mikael Ersson; Pär Jönsson; Stein-Tore Johanssen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; numerical modeling; top-blown converter; BOF; CFD; Thermodynamics; slag; dynamic simulations; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning : The aim of this thesis work is to increase the knowledge of phenomena taking place during the initial stage in a top blown converter. The work has been done in a few steps resulting in four different supplements. Water model experiments have been carried out using particle image velocimetry (PIV) technology. LÄS MER