Iron production from Fe3O4 and graphite by applying 915MHz microwaves

Iron production from Fe3O4 and graphite by applying 915MHz microwaves

The chemical behavior of iron ore reduction was experimentally studied under electric and magnetic fields of microwaves. The microwave magnetic field rapidly heated the powdery ores so that the reduction of the ore to metal ions was completed. The mechanism was investigated theoretically. It was fou...

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Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2012-10, Vol.556, p.977-979
Hauptverfasser: Kashimura, Keiichiro, Sato, Motoyasu, Hotta, Masahiro, Kumar Agrawal, Dinesh, Nagata, Kazuhiro, Hayashi, Miyuki, Mitani, Tomohiko, Shinohara, Naoki
Format: Artikel
Sprache:eng
Schlagworte:
915 MHz
Fermi level
Iron
Magnetic fields
Materials science
Metal ions
Metal oxides
Microwave chemistry
Microwave heating
Microwaves
Reduction
Structural materials
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Zusammenfassung:The chemical behavior of iron ore reduction was experimentally studied under electric and magnetic fields of microwaves. The microwave magnetic field rapidly heated the powdery ores so that the reduction of the ore to metal ions was completed. The mechanism was investigated theoretically. It was found that the combined effect of thermal energy and a portion of the microwave magnetic field enhanced deoxidation and that the microwaves act as a dynamic catalyst at high temperatures. High-frequency magnetic fields were found to enhance the antibonding character of oxygen in materials with unpaired spins above the Fermi level of the 3d shell.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2012.07.049