Abstract
Abstract The rate of oxidation of manganese in liquid iron by oxidizing slag and rate of reduction of manganese oxide in liquid slag by liquid iron were measured at 1873 K. At the same time the liquid iron-slag interface was observed by an X-ray TV and the shape of iron drops was photographed on a film to determine the interfacial tension. From the results of the rate measurements it was found that the reaction proceeded rapidly over the initial period in the case of oxidation, but not in the case of reduction. The rate of reaction was analysed on the assumption that the reaction was controlled by simultaneous transport of manganese and oxygen. The change of interfacial tension during a run was small in spite of the transfer of surface active oxygen. Resume Les vitesses d'oxydation et de reduction du manganese ont ete mesurees a l'interface metal-scorie d'un bain de fonte liquide a 1873 K. Simultanement, l'interface fonte-scorie a ete observee a l'aide d'une camera de television R-X et les goutelettes de ...
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