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| Study on Reduction Sequence of Hematite at LowTemperature NonEquilibrium State |
| ZHAO Pei,GUO Peimin,ZHANG Dianwei |
| The State Key Laboratory for Advanced Iron and Steel Processes and Products, Central Iron and Steel Research Institute, Beijing 100081, China |
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Abstract Reduction kinetic Mechanism of hematite by CO or H2 gas below 570 ℃ was studied. The results show that reduction process is of nonequilibrium process, and its kinetics depend on compositions of reducing gas.Reduction sequence of hematite is Fe2O3→Fe3O4→Fe when the content of CO or H2 in reduction gas can not satisfy the reaction Fe3O4＋CO（H2）→3FeO＋CO2（H2O）; if the later is satisfied, two reduction sequences Fe2O3→Fe3O4→Fe and Fe2O3→Fe3O4→FeO→Fe will be coexisted.
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Received: 01 January 1900
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2006, Vol. 41 