ResumoNa última década, com o crescente aumento da demanda na produção de aço, as usinas siderúrgicas estão, cada vez mais, procurando soluções que tornem seus processos mais ágeis e economicamente competitivos, sem perder qualidade do produto final. O presente trabalho visou a uma avaliação post mortem dos tijolos refratários utilizados em carros torpedo. Esse estudo foi feito através das técnicas de difração de raios-X (DRX) e microscopia eletrônica de varredura (MEV) associada à espectroscopia de energia dispersiva de raios-X (EDS), com o intuito de se avaliar as modificações estruturais nos materiais em estudo (refratários TCP e TCE). Com base nos resultados obtidos foi possível verificar modificações estruturais mais significativas nos tijolos refratários TCE após o uso com base na incorporação de material associada à escória na sua superfície, o qual contribui para um aumento significativo na sua densidade. Palavras-chave: Carro torpedo; Refratários; Post mortem; Espinélio. POST MORTEM STUDY OF AL2O3/SIC/C AND AL2O3/SIC/C/MGO REFRACTORY BRICKS USED IN TORPEDO LADLE AbstractThe demand for steel production growing up in the last decade. The steel mills are looking constantly for solutions that make their processes more agile and competitive for the market that require products with quality. The present work goal was a refractory bricks post morten evaluation used in the Torpedo Ladle. The study was performed by using the following techniques: X-ray Diffraction (XRD) and Scanning Electronic Microscopy (SEM) associated with X-ray Energy Dispersive Spectroscopy (EDS), in order to evaluate the structural changes in the materials under study (TCP and TCE refractories). Based on the results its verified more significant structural changes in the TCE refractory bricks after use based on the material incorporation associated with the scum on the surface, which contributes to a significant increase in its density.
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