Evaluation of Stirring and Flux Type Influence on Hot Metal Desulfurization Efficiency
16 May 22
3:30 PM
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4:00 PM
Speaker(s):
Elton Volkers do Espírito Santo, Bachelor, Instituto Federal do Espírito Santo; Inamara Amanda Souza Santos, MSc, Instituto Federal do Espírito Santo; Késsia Gomes Paradela, MSc, Instituto Federal do Espírito Santo; José Roberto de Oliveira, PhD, Instituto Federal do Espírito Santo; Marcelo Lucas Pereira Machado, Professor, Instituto Federal do Espírito Santo; Flaviani Marculano Marchesi, Instituto Federal do Espirito Santo; Caio Vaccari Silva, Instituto Federal do Espirito Santo
Desulfurization parameters such as stirring and flux type are fundamental to reach the low sulfur levels required nowadays. Therefore, this paper aims to determine their influence on desulfurization efficiency. Two types of stirrers were tested as well as the following fluxes: standard flux, sodalite, aluminum dross, fluorspar and B2O3. The tests were performed at 1,350°C in an inert atmosphere. The liquid and solid phases formed in the mixtures were determined by the software Factsage 7.0 and the desulfurization factor (FDeS) was developed. The stirrer with the highest stirring energy and the mixtures containing B2O3 generated the best results.