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From the viewpoint of the improvement of reaction efficiency in the blast furnace, a trial of the use of the high reactivity coke into the blast furnace was carried out as one of the technologies to realize the low reducing agent operation. In addition to the evaluation of the effect of coke reactivity on the reaction efficiency in the blast furnace, it is also important to establish the technology which predicts the coke strength after the gasification reaction in the blast furnace in order to evaluate the effect of coke quality on the blast furnace operation. However, the effect of coke reactivity index called CRI or the coke strength index after the gasification reaction called CSR on the blast furnace operation has not been clarified quantitatively yet. In this study, in order to evaluate the effects of coke quality indexes of CRI and CSR on the degradation behavior of coke in the blast furnace, a numerical analysis method based on the simultaneous analysis by a three dimensional mathematical model for the blast furnace and a solid flow model which can describe the stress field in the blast furnace was developed.
From the viewpoint of the improvement of reaction efficiency in the blast furnace, a trial of the use of the high reactivity coke into the blast furnace was carried out as one of the technologies to realize the low reducing agent operation. In addition to the evaluation of the effect of coke reactivity on the reaction efficiency in the blast furnace, it is also important to establish the technology which predicts the coke strength after the gasification reaction in the blast furnace in order to evaluate the effect of coke quality on the blast furnace operation. However, the effect of coke reactivity index called CRI or the coke strength index after the gasification reaction called CSR on the blast furnace operation has not been clarified quantitatively yet. In this study, in order to evaluate the effects of coke quality indexes of CRI and CSR on the degradation behavior of coke in the blast furnace, a numerical analysis method based on the simultaneous analysis by a three dimensional mathematical model for the blast furnace and a solid flow model which can describe the stress field in the blast furnace was developed.
Palavras-chave
Blast furnace; Reaction efficiency; High reactivity coke; Coke degradation; CRI; CSR; Numerical analysis
Blast furnace; Reaction efficiency; High reactivity coke; Coke degradation; CRI; CSR; Numerical analysis
Como citar
Ujisawa, Yutaka;
Inada, Takanobu;
Takatani, Kouji.
NUMERICAL ANALYSIS TECHNOLOGY TO EVALUATE COKE DEGRADATION BEHAVIOR IN BLAST FURNACE
,
p. 65-70.
In: 7th Japan-Brazil Syposium on Dust Processing-Energy-Environment and 1st International Seminar On Self-Reducing and Cold Bonded Agglomeration,
São Paulo,
2008.
ISSN: -
, DOI 10.5151/5463-5463-2009-15672-0008
