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System analysis of the reduction of iron oxides

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Abstract

The parameters of the equilibria that take place during the reduction of iron oxides in the water gas medium (CO-CO2-H2-H2O) in the presence and absence of carbon are calculated. The possibilities of the diagram technique of representing results are discussed. The following two spatial diagrams are plotted: one of them reflects a set of three-phase equilibrium surfaces, and the curved surface in the other diagram consists of a set of six three-phase equilibrium regions separated by four-phase equilibrium lines. The last diagram has a single point that determines the parameters of invariant five-phase equilibrium. A method is proposed to graphically determine possible water gas compositions in equilibrium with the following mixtures: Fe3O4-C, Fe3O4-FeO-C, FeO-C, FeO-Fe(C)-C, Fe(C)-C, and Fe3O4-Fe(C)-C.

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Authors and Affiliations

  1. Southern Ural State University (National Research University), Chelyabinsk, Russia

    G. G. Mikhailov, Yu. S. Kuznetsov & O. I. Kachurina

Authors
  1. G. G. Mikhailov
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  2. Yu. S. Kuznetsov
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  3. O. I. Kachurina
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Correspondence to G. G. Mikhailov.

Additional information

Original Russian Text © G.G. Mikhailov, Yu.S. Kuznetsov, O.I. Kachurina, 2014, published in Metally, 2014, No. 2, pp. 10–15.

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Mikhailov, G.G., Kuznetsov, Y.S. & Kachurina, O.I. System analysis of the reduction of iron oxides. Russ. Metall. 2014, 179–184 (2014). https://doi.org/10.1134/S0036029514030033

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