Kinetic study on the reduction reaction of biomass-tar-infiltrated iron ore

Sou Hosokai, Kosuke Matsui, Noriyuki Okinaka, Ko Ichiro Ohno, Masakata Shimizu, Tomohiro Akiyama

Research output: Contribution to journalArticle

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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 languageEnglish
Pages (from-to)7274-7279
Number of pages6
JournalEnergy and Fuels
Volume26
Issue number12
DOIs
Publication statusPublished - Dec 20 2012

Fingerprint

Tars
Iron ores
Tar
Biomass
Carbon
Kinetics
Ferrosoferric Oxide
Ores
Magnetite
Thermogravimetric analysis
Metallurgical coke
X ray diffraction
Carbonization
Kinetic parameters
Spectrometry
Raman scattering
Evaporation
Iron

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Hosokai, S., Matsui, K., Okinaka, N., Ohno, K. I., Shimizu, M., & Akiyama, T. (2012). Kinetic study on the reduction reaction of biomass-tar-infiltrated iron ore. Energy and Fuels, 26(12), 7274-7279. https://doi.org/10.1021/ef3013272

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 journalArticle

Hosokai, S, Matsui, K, Okinaka, N, Ohno, KI, Shimizu, M & Akiyama, T 2012, 'Kinetic study on the reduction reaction of biomass-tar-infiltrated iron ore', Energy and Fuels, vol. 26, no. 12, pp. 7274-7279. https://doi.org/10.1021/ef3013272
Hosokai, Sou ; Matsui, Kosuke ; Okinaka, Noriyuki ; Ohno, Ko Ichiro ; Shimizu, Masakata ; Akiyama, Tomohiro. / Kinetic study on the reduction reaction of biomass-tar-infiltrated iron ore. In: Energy and Fuels. 2012 ; Vol. 26, No. 12. pp. 7274-7279.
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