Carbothermic reduction behavior of FeS in the presence of CaO during microwave irradiation

Ahmadreza Amini, Takayuki Maeda, Ko ichiro Ohno, Kazuya Kunitomo

研究成果: ジャーナルへの寄稿記事

1 引用 (Scopus)

抄録

Carbothermic reduction of FeS in the presence of CaO was experimentally studied by employing a multi-mode microwave generator at 1 050 W and 2.45 GHz as an external heat source to mitigate CO 2 and SO 2 emissions. According to XRD analysis, an ion exchange reaction between FeS and CaO was initiated at temperatures lower than 645°C and progressed by a further heating to 850°C without any evidence for the onset of a reduction reaction. Detection of Fe phase in the XRD pattern of sample heated to 920°C and existence of CO/CO 2 in the off-gas during microwave treatment demonstrated that the reduction reaction initiates at ca. 850°C. It was found that the onset of reduction reaction promotes the ion exchange reaction by FeO consumption via reduction to Fe. Moreover, optical microscope and SEM-EDX observations showed that carbon can be absorbed by metallic iron to make molten iron particles at 1 290°C.

元の言語英語
ページ(範囲)672-678
ページ数7
ジャーナルisij international
59
発行部数4
DOI
出版物ステータス出版済み - 4 1 2019

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Carbothermal reduction
Microwave irradiation
Carbon Monoxide
Ion exchange
Iron
Microwaves
Molten materials
Energy dispersive spectroscopy
Microscopes
Carbon
Gases
Heating
Scanning electron microscopy
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

これを引用

Carbothermic reduction behavior of FeS in the presence of CaO during microwave irradiation. / Amini, Ahmadreza; Maeda, Takayuki; Ohno, Ko ichiro; Kunitomo, Kazuya.

:: isij international, 巻 59, 番号 4, 01.04.2019, p. 672-678.

研究成果: ジャーナルへの寄稿記事

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AB - Carbothermic reduction of FeS in the presence of CaO was experimentally studied by employing a multi-mode microwave generator at 1 050 W and 2.45 GHz as an external heat source to mitigate CO 2 and SO 2 emissions. According to XRD analysis, an ion exchange reaction between FeS and CaO was initiated at temperatures lower than 645°C and progressed by a further heating to 850°C without any evidence for the onset of a reduction reaction. Detection of Fe phase in the XRD pattern of sample heated to 920°C and existence of CO/CO 2 in the off-gas during microwave treatment demonstrated that the reduction reaction initiates at ca. 850°C. It was found that the onset of reduction reaction promotes the ion exchange reaction by FeO consumption via reduction to Fe. Moreover, optical microscope and SEM-EDX observations showed that carbon can be absorbed by metallic iron to make molten iron particles at 1 290°C.

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