Abstract
This work describes a new biomass ironmaking that uses low-grade iron ore and woody biomass for promoting the direct reduction of a nanoporous iron ore infiltrated and carbonized with biomass tar (biotar). The mechanism and kinetics of the reduction reaction of the carbon-infiltrated ore were systematically studied by means of thermogravimetric analysis with X-ray diffraction (XRD) and Raman scattering spectrometry. The results showed that the carbon-infiltrated ore reduced at a significantly lower temperature than the mixture of reagent magnetite and metallurgical coke. It was confirmed that this high reactivity was due to the nanoscale contact between carbon and the ore and the less fused and less cross-linked nature of the biotar-derived carbon. From the combination of thermogravimetry and XRD analyses, it is revealed that the reduction reaction occurred serially in three steps: re-evaporation and/or carbonization of biotar, reduction of magnetite to wüstite, and reduction of wüstite to iron. Finally, the kinetic parameters for each reaction were summarized by the Friedman-Ozawa method.
| Original language | English |
|---|---|
| Pages (from-to) | 7274-7279 |
| Number of pages | 6 |
| Journal | Energy and Fuels |
| Volume | 26 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 20 2012 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
Cite this
Kinetic study on the reduction reaction of biomass-tar-infiltrated iron ore. / Hosokai, Sou; Matsui, Kosuke; Okinaka, Noriyuki; Ohno, Ko Ichiro; Shimizu, Masakata; Akiyama, Tomohiro.
In: Energy and Fuels, Vol. 26, No. 12, 20.12.2012, p. 7274-7279.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Kinetic study on the reduction reaction of biomass-tar-infiltrated iron ore
AU - Hosokai, Sou
AU - Matsui, Kosuke
AU - Okinaka, Noriyuki
AU - Ohno, Ko Ichiro
AU - Shimizu, Masakata
AU - Akiyama, Tomohiro
PY - 2012/12/20
Y1 - 2012/12/20
N2 - This work describes a new biomass ironmaking that uses low-grade iron ore and woody biomass for promoting the direct reduction of a nanoporous iron ore infiltrated and carbonized with biomass tar (biotar). The mechanism and kinetics of the reduction reaction of the carbon-infiltrated ore were systematically studied by means of thermogravimetric analysis with X-ray diffraction (XRD) and Raman scattering spectrometry. The results showed that the carbon-infiltrated ore reduced at a significantly lower temperature than the mixture of reagent magnetite and metallurgical coke. It was confirmed that this high reactivity was due to the nanoscale contact between carbon and the ore and the less fused and less cross-linked nature of the biotar-derived carbon. From the combination of thermogravimetry and XRD analyses, it is revealed that the reduction reaction occurred serially in three steps: re-evaporation and/or carbonization of biotar, reduction of magnetite to wüstite, and reduction of wüstite to iron. Finally, the kinetic parameters for each reaction were summarized by the Friedman-Ozawa method.
AB - This work describes a new biomass ironmaking that uses low-grade iron ore and woody biomass for promoting the direct reduction of a nanoporous iron ore infiltrated and carbonized with biomass tar (biotar). The mechanism and kinetics of the reduction reaction of the carbon-infiltrated ore were systematically studied by means of thermogravimetric analysis with X-ray diffraction (XRD) and Raman scattering spectrometry. The results showed that the carbon-infiltrated ore reduced at a significantly lower temperature than the mixture of reagent magnetite and metallurgical coke. It was confirmed that this high reactivity was due to the nanoscale contact between carbon and the ore and the less fused and less cross-linked nature of the biotar-derived carbon. From the combination of thermogravimetry and XRD analyses, it is revealed that the reduction reaction occurred serially in three steps: re-evaporation and/or carbonization of biotar, reduction of magnetite to wüstite, and reduction of wüstite to iron. Finally, the kinetic parameters for each reaction were summarized by the Friedman-Ozawa method.
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U2 - 10.1021/ef3013272
DO - 10.1021/ef3013272
M3 - Article
AN - SCOPUS:84871558435
VL - 26
SP - 7274
EP - 7279
JO - Energy & Fuels
JF - Energy & Fuels
SN - 0887-0624
IS - 12
ER -