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Kinetic studies of the reduction of FeO and FeWO4 by hydrogen

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Abstract

The kinetics of the reduction of FeO and FeWO4 have been investigated by thermogravimetric method in the temperature ranges of 1023 to 1173 K and 823 to 1173 K, respectively. The experiments were conducted under isothermal conditions in flowing hydrogen gas. The activation energies for the reduction of the pure iron oxide and iron tungstate were found to be 42.7 kJ/mol and 85.1 kJ/mol, respectively. The results obtained show that the reduction of iron tungstate proceeds in one single step from FeWO4 to Fe3W2 and W. The experimental data are compared with the information available in the literature, and the correlations between the results obtained in pure oxide systems and complex systems are discussed.

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Authors and Affiliations

  1. the Department of Metallurgy, Royal Institute of Technology, S-100 44, Stockholm, Sweden

    J. A. Bustnes (Graduate Student, Research Metallurgist)

  2. LKAB, S-98381, Malmberget, Sweden

    J. A. Bustnes (Graduate Student, Research Metallurgist)

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  1. J. A. Bustnes
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Bustnes, J.A. Kinetic studies of the reduction of FeO and FeWO4 by hydrogen. Metall Mater Trans B 28, 613–618 (1997). https://doi.org/10.1007/s11663-997-0033-3

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  • DOI: https://doi.org/10.1007/s11663-997-0033-3

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