Evaluation of Palm Kernel Shell Charcoal for Blast Furnace Injection

Tsuruta, Hidekazu; Asanuma, Minoru; Murao, Akinori; Fujibayashi, Akio

doi:10.3775/jie.94.505

Cited by 1 publication

(1 citation statement)

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“…The obtained char was also injected to the blast furnace through tuyeres. 6,7) The heat of 120-148 J/g 8) is required for the carbonization depending on the type of biomass, its water content and carbonization conditions. Some of heats will not be necessary if biomass can directly use for the reduction of iron ores.…”

Section: ．Introductionmentioning

confidence: 99%

Low Temperature Reduction Mechanism of Carbon-Iron Ore Composite Using Woody Biomass

Higashi,

Maruoka,

Kasai

et al. 2023

ISIJ Int.

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Utilization of biomass, which is regarded as a carbon neutral fuel, has been discussed to decrease in the carbon dioxide emission from the ironmaking processes. Previous reports insisted the volatile matters in the uncarbonized biomass contributed to the reduction of iron ore at low temperature. However, its mechanism has not been explained by the pyrolysis reaction of biomass components. In this study, the low temperature reduction behavior of the carbon-iron ore composite using uncarbonized biomass was compared with that using its components such as cellulose and lignin. Furthermore, the effect of volatile matters in the biomass on the reduction of iron ores was examined.The composite using uncarbonized biomass was started to be reduced at 400~450℃ by CO produced by pyrolysis of cellulose. As the temperature was further increased, iron ore was reduced to metallic iron at approximately 800℃ by hydrogen produced by the interaction between cellulose and lignin. The metallic iron may contribute to the gasification of biomass char and fast reduction reaction as the catalyst.

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Section: ．Introductionmentioning

confidence: 99%