ISSN 2594-357X
34º Seminário de Redução de Minério de Ferro e Matérias-Primas — Vol. 01 , num. 34 (2004)
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Abstract
Low slag volumes favour high productivities. In the case of Sidmar the burden consists of more than 90% sinter. The iron content of the sinter has been optimized. Slag volume was thus reduced and productivities between 65–70 tHM/m²·24h are realized. At high pulverized coal injection rates the residence time of the coke increases substantially and a higher degree of degradation is to be expected. Therefore a careful monitoring of the coke and sinter quality is of major importance. This paper describes the coke quality used in the Sidmar blast furnaces to control permeability of the furnace with long term PCI rates of 180 kg/tHM and coke rates around 300 kg/tHM. A global coke quality index has been defined which is well correlated with the blast furnace productivity. Sidmar believes that the quality requirements of the burden can directly be linked with the requested productivity and that good operational practices are necessary for optimisation of that productivity.
Low slag volumes favour high productivities. In the case of Sidmar the burden consists of more than 90% sinter. The iron content of the sinter has been optimized. Slag volume was thus reduced and productivities between 65–70 tHM/m²·24h are realized. At high pulverized coal injection rates the residence time of the coke increases substantially and a higher degree of degradation is to be expected. Therefore a careful monitoring of the coke and sinter quality is of major importance. This paper describes the coke quality used in the Sidmar blast furnaces to control permeability of the furnace with long term PCI rates of 180 kg/tHM and coke rates around 300 kg/tHM. A global coke quality index has been defined which is well correlated with the blast furnace productivity. Sidmar believes that the quality requirements of the burden can directly be linked with the requested productivity and that good operational practices are necessary for optimisation of that productivity.
Keywords
permeability, coke quality, productivity, blast furnace, PCI
permeability, coke quality, productivity, blast furnace, PCI
How to cite
Bonte, Luc; Huysse, Katleen; Daelman, Alain; Dauwels, Gabriel.
INFLUENCE OF THE COKE QUALITY ON THE PRODUCTIVITY OF THE BLAST FURNACE,
p. 919-928.
In: 34º Seminário de Redução de Minério de Ferro e Matérias-Primas,
None,
2004.
ISSN: 2594-357X, DOI 10.5151/2594-357x-34Red-919-928
