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Desulfurizing iron-carbon melts with lime under reduced pressures

  • Pyrometallurgy
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Abstract

Experiments were carried out to compare the rates of formation of CaS on CaO crystals which were either immersed in a sulfur-bearing, carbon-saturated iron melt or held in the effluent gases just above the melt. Temperatures ranged from 1375°C to 1600°C, and times ranged from one to twelve hours. The CaS layers were measured both metallo-graphically and with an electron microprobe. Data on the time and temperature dependence of the layer thickness are presented. These layers were about 15 microns thick after 6 h at 1460°C, independent of whether or not the crystal was immersed in molten iron. The role of lime in the desulfurization process is to act as a getter for removal of sulfur from the gas stream.

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Authors and Affiliations

  1. Corning Class Works, Corning, New York

    D. C. Boyd (Research Ceramist) & W. C. Phelps

  2. Department of Chemical Engineering and Metallurgy, University of Denver, 80210, Denver, Colo

    M. T. Hepworth (Professor and Chairman)

Authors
  1. D. C. Boyd
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  2. W. C. Phelps
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  3. M. T. Hepworth
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Additional information

W. C. PHELPS, JR., Deceased, formerly with the Department of Metallurgy and Materials Science, Purdue University, Lafayette, Ind. 47907.

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Boyd, D.C., Phelps, W.C. & Hepworth, M.T. Desulfurizing iron-carbon melts with lime under reduced pressures. Metall Trans B 6, 87–93 (1975). https://doi.org/10.1007/BF02825682

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  • DOI: https://doi.org/10.1007/BF02825682

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