ISSN 2594-357X
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After the blow-down of the Blast Furnace #2 of Termium Planta General Savio, there were taken 24 cores from different locations of the hearth in order to obtain samples from the different layers that formed the hearth’s design. The scope of this work was to determine the wear profile of the hearth after eleven years of campaign and to identify the main wear mechanism of the refractory lining. The post mortem study included physical and mechanical properties determination, chemical composition analysis as well as crystalline phase identification by DRX and determination of the thermal conductivity at 400oC. It was possible to determine the location of a brittle zone with presence of cracks, high apparent porosity and low mechanical strength. Among the wear mechanism, it was identified penetration of hot metal and alkalis, and the presence of circumferential and longitudinal cracks, responsible of the variation in the physical and mechanical properties of the carbon materials.
After the blow-down of the Blast Furnace #2 of Termium Planta General Savio, there were taken 24 cores from different locations of the hearth in order to obtain samples from the different layers that formed the hearth’s design. The scope of this work was to determine the wear profile of the hearth after eleven years of campaign and to identify the main wear mechanism of the refractory lining. The post mortem study included physical and mechanical properties determination, chemical composition analysis as well as crystalline phase identification by DRX and determination of the thermal conductivity at 400oC. It was possible to determine the location of a brittle zone with presence of cracks, high apparent porosity and low mechanical strength. Among the wear mechanism, it was identified penetration of hot metal and alkalis, and the presence of circumferential and longitudinal cracks, responsible of the variation in the physical and mechanical properties of the carbon materials.
Palavras-chave
Blast furnace; Hearth; Refractory wear; Carbon
Blast furnace; Hearth; Refractory wear; Carbon
Como citar
Rimoldi, Maria José;
camelli, Silvia;
Vázquez, Adrián;
Marinelli, Pablo;
Doro, Enrique;
Mirabelli, Juan J..
POST MORTEM STUDY OF THE HEARTH CARBON 1 REFRACTORIES OF TERNIUM BLAST FURNACE #
,
p. 1113-1123.
In: 38º Seminário de Redução de Minério de Ferro e Matérias-primas e 9º Simpósio Brasileiro de Minério de Ferro,
São Luís - MA,
2008.
ISSN: 2594-357X
, DOI 10.5151/2594-357x-0111
