Iron oxide recovery from fayalite in water vapor at high temperature
The oxidation behavior of fayalite (Fe2SiO4) in water vapor at 1000°C was investigated. The phase constitution and microstructure of the solid products were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive spectrometer (EDS). The gas product w...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2018-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700011C.pdf |
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| author | Chen J.H. Mi W.J. Chen H.Y. Li B. Chou K.C. Hou X.M. |
| author_facet | Chen J.H. Mi W.J. Chen H.Y. Li B. Chou K.C. Hou X.M. |
| author_sort | Chen J.H. |
| collection | DOAJ |
| description | The oxidation behavior of fayalite (Fe2SiO4) in water vapor at 1000°C was investigated. The phase constitution and microstructure of the solid products were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive spectrometer (EDS). The gas product was continuously measured online by a gas analyzer. The results showed that fayalite was completely decomposed into magnetite (58.8 wt%), hematite (21.6 wt%) and silica (19.6 wt%) at 1000 °C for 40 min under water vapor condition. Compared with the result obtained in dry air, water vapor could promote fayalite to transform into magnetite by decreasing oxygen fugacity. In addition, the iron oxide product was further enriched via alkaline cleaning in 1 mol/L NaOH. As for the gas product, the hydrogen production capacity reached 24.41 mL/g when exposed to 50 vol% water-50 vol% Ar at 1000°C for 40 min. |
| format | Article |
| id | doaj-art-6f07bb42b41643b88c75fd1f0f73aa4d |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-6f07bb42b41643b88c75fd1f0f73aa4d2025-02-02T18:13:43ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752018-01-015411810.2298/JMMB160926011C1450-53391700011CIron oxide recovery from fayalite in water vapor at high temperatureChen J.H.0Mi W.J.1Chen H.Y.2Li B.3Chou K.C.4Hou X.M.5University of Science and Technology, School of Material Science and Engineering, Beijing, ChinaUniversity of Science and Technology, School of Material Science and Engineering, Beijing, ChinaUniversity of Science and Technology, School of Material Science and Engineering, Beijing, ChinaUniversity of Science and Technology, School of Material Science and Engineering, Beijing, ChinaUniversity of Science and Technology, State Key Laboratory of Advanced Metallurgy, Beijing, ChinaUniversity of Science and Technology, State Key Laboratory of Advanced Metallurgy, Beijing, ChinaThe oxidation behavior of fayalite (Fe2SiO4) in water vapor at 1000°C was investigated. The phase constitution and microstructure of the solid products were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM) with energy dispersive spectrometer (EDS). The gas product was continuously measured online by a gas analyzer. The results showed that fayalite was completely decomposed into magnetite (58.8 wt%), hematite (21.6 wt%) and silica (19.6 wt%) at 1000 °C for 40 min under water vapor condition. Compared with the result obtained in dry air, water vapor could promote fayalite to transform into magnetite by decreasing oxygen fugacity. In addition, the iron oxide product was further enriched via alkaline cleaning in 1 mol/L NaOH. As for the gas product, the hydrogen production capacity reached 24.41 mL/g when exposed to 50 vol% water-50 vol% Ar at 1000°C for 40 min.http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700011C.pdffayalitewater vaporoxidation behaviorhydrogenmagnetite |
| spellingShingle | Chen J.H. Mi W.J. Chen H.Y. Li B. Chou K.C. Hou X.M. Iron oxide recovery from fayalite in water vapor at high temperature Journal of Mining and Metallurgy. Section B: Metallurgy fayalite water vapor oxidation behavior hydrogen magnetite |
| title | Iron oxide recovery from fayalite in water vapor at high temperature |
| title_full | Iron oxide recovery from fayalite in water vapor at high temperature |
| title_fullStr | Iron oxide recovery from fayalite in water vapor at high temperature |
| title_full_unstemmed | Iron oxide recovery from fayalite in water vapor at high temperature |
| title_short | Iron oxide recovery from fayalite in water vapor at high temperature |
| title_sort | iron oxide recovery from fayalite in water vapor at high temperature |
| topic | fayalite water vapor oxidation behavior hydrogen magnetite |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700011C.pdf |
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