Per: Elton volkers do espírito santo (INSTITUTO FEDERAL DO ESPÍRITO SANTO), Flaviani Marculano Marchesi (INSTITUTO FEDERAL DO ESPÍRITO SANTO), Heitor Cristo Clem de Oliveira (INSTITUTO FEDERAL DO ESPÍRITO SANTO), Silas Gambarine Soares (INSTITUTO FEDERAL DO ESPÍRITO SANTO), Henrique Silva Furtado (ARCELORMITTAL TUBARÃO), Felipe Fardin Grillo (INSTITUTO FEDERAL DO ESPÍRITO SANTO), José Roberto de Oliveira (INSTITUTO FEDERAL DO ESPÍRITO SANTO)
Abstract:
Due to the increased restriction of sulfur content in steels grades it becomes necessary to investigate the efficiency of hot metal desulfurization process. Therefore, the objective of this work is to employ different raw materials and fluxes such as lime, sodalite, limestone, standard mixture, fluorspar, KR slag, aluminum dross and B2O3, in order to find the composition with higher desulfurisation efficiency, relating it to the desulfurisation factor obtained by computational thermodynamics. The tests were performed at 1350 °C in an inert atmosphere with constant stirring. The results showed that the mixture with the highest efficiency was the one with 69% lime, 5% sodalite, 15% limestone, 6% KR slag and 5% B2O3.