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The rate of chlorination of metals and oxides: part III. the rate of chlorination of fe2O3 and NiO in Cl2 and HCL

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Abstract

The rate of chlorination of Fe2O3, NiO, and NiFe2O4 by Cl2 (1073 to 1473 K) and by HCl (1073 to 1273 K) diluted with He or Ar has been measured. The rates were measured as a function of particle size, temperature, gas composition and internal surface area. In all cases gas diffusion influences the rate. During the chlorination of the oxides with Cl2 at low temperatures there was incomplete pore diffusion and the rate is restricted to the pore walls near the external surface. At high temperatures the rate is controlled by the diffusion of Cl2 through the gas film boundary layer around the oxide particle. During the chlorination by HCl the rate is controlled primarily by the counter current diffusion of HCl to the surface and of the reaction products away from the surface.

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Authors and Affiliations

  1. Research Center, U. S. Steel Corporation, 15146, Monroeville, Pa.

    R. J. Fruehan (Senior Scientist) & L. J. Martonik (Research Metallurgical Analyst)

Authors
  1. R. J. Fruehan
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  2. L. J. Martonik
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Fruehan, R.J., Martonik, L.J. The rate of chlorination of metals and oxides: part III. the rate of chlorination of fe2O3 and NiO in Cl2 and HCL. Metall Trans 4, 2793–2797 (1973). https://doi.org/10.1007/BF02644579

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  • DOI: https://doi.org/10.1007/BF02644579

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