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Reduction of CO2 emission is the most important subject in a blast furnace operation. The key point of reduction of CO2 emission is to decrease the Fe-FeO-CO-CO2 equilibrium temperature in the blast furnace shaft. Considering the equilibrium temperature is decided by the carbon solution loss reaction, an acceleration of its reaction might be the key technology in the blast furnace ironmaking. Recently, various methods such as the carbon composite agglomeration and the alkali addition to the coke have been studying to accelerate the carbon solution loss reaction and the iron ore reduction. In these studies, it was found that the beginning temperature of carbon solution loss reaction was decreased by the vicinity arrangement of ore and coke. It shows the possibility of innovative blast furnace ironmaking lead to CO2 gas reduction. This paper introduces the acceleration effects of iron ore reduction and carbon gasification reactions by the vicinity arrangement of ore and coke.
Reduction of CO2 emission is the most important subject in a blast furnace operation. The key point of reduction of CO2 emission is to decrease the Fe-FeO-CO-CO2 equilibrium temperature in the blast furnace shaft. Considering the equilibrium temperature is decided by the carbon solution loss reaction, an acceleration of its reaction might be the key technology in the blast furnace ironmaking. Recently, various methods such as the carbon composite agglomeration and the alkali addition to the coke have been studying to accelerate the carbon solution loss reaction and the iron ore reduction. In these studies, it was found that the beginning temperature of carbon solution loss reaction was decreased by the vicinity arrangement of ore and coke. It shows the possibility of innovative blast furnace ironmaking lead to CO2 gas reduction. This paper introduces the acceleration effects of iron ore reduction and carbon gasification reactions by the vicinity arrangement of ore and coke.
Palavras-chave
CO2 emission; Blast furnace; Carbon solution loss reaction; Reduction; Vicinity arrangement of ore and coke
CO2 emission; Blast furnace; Carbon solution loss reaction; Reduction; Vicinity arrangement of ore and coke
Como citar
Shimizu, Masakata.
VIEW POINTS AND POSSIBILITY FOR INNOVATION OF BLAST FURNACE IRONMAKING
,
p. 228-235.
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 10.5151/5463-5463-0025
