Search for dissertations about: "SSAB"
Showing result 11 - 15 of 21 swedish dissertations containing the word SSAB.
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11. Modeling the microstructural evolution during hot working of C-Mn and Nb microalloyed steels using a physically based model
Abstract : Recrystallization kinetics, during and after hot deformation, has been investigated for decades. From these investigations several equations have been derived for describing it. The equations are often empirical or semi-empirical, i.e. READ MORE
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12. Avoiding slopping in top-blown BOS vessels
Abstract : Slag formation plays a decisive role in all steelmaking processes. In top-blowing Basic Oxygen Steelmaking (BOS), i.e. in the LD process, an emulsion consisting of liquid slag, dispersed metal droplets and solid particles will, together with process gases, form an expanding foam. READ MORE
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13. Solubility of hydrogen in slags and its impact on ladle refining
Abstract : In the present thesis a study of the mechanisms of hydrogen control pickup during ladle treatment was undertaken. Previous studies showed that the presence of hydroxyl ions in the ladle slag resulteds in hydrogen transfer from the slag back into the steel bath. READ MORE
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14. Numerical modelling of swirling drying flow
Abstract : Waste hydrochloric acid (HCl) from the pickling process at SSAB EMEA in Borl¨ange, Sweden, is regenerated using a technique called spray roasting where waste HCl is sprayed into a hot reactor through four spray nozzles at the top of the reactor. The regeneration (drying) process is driven by four natural gas burners placed symmetrically along the periphery of the reactor and causes the water in the waste acid droplets to evaporate. READ MORE
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15. Process integration in the steel industry : possibilities to analyse energy use and environmental impacts for an integrated steel mill
Abstract : There is a growing awareness of serious problems associated with the use of energy. These problems include local and global environmental degradation associated with energy use and depletion of resources. READ MORE