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The influence of gas phase resistance on mass transfer to a liquid metal

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Abstract

When a dilute gas is absorbed in a liquid metal in which Sievert’s law is obeyed, the gas phase resistance is likely to be significant. The influence of gas phase resistance will de-pend on the concentration of the transferred species in both the gas and the liquid as well as on the mass transfer coefficients in both the gas and liquid phases. An overall mass transfer coefficient is defined by: n″(X)1=kov√pb -cb and equations are developed relating this to the variables mentioned. Experimental work has been carried out with dilute oxygen jets (p(O2) = 0.1 and 0.2 atm) blowing onto molten silver, and the results have confirmed that the resistance in the gas phase contributes to the overall resistance. From these results it has been possible to estimate gas phase mass transfer coefficients which range from 1.4 cm/s for a jet momentum of 8000 dyne and lance height of 18.5 cm to 4.8 cm/s for a jet momentum of 56,000 dynes and lance height of 10.5 cm.

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Authors and Affiliations

  1. The Tata Iron and Steel Co. Ltd., Jamshedpur-1, India

    A. Chatterjee (Technical Assistant (Iron and Steel)

  2. Applied Metallurgy at Imperial College of Science and Technology, University of London, London, England

    A. V. Bradshaw (Professor)

Authors
  1. A. Chatterjee
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  2. A. V. Bradshaw
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Additional information

A. CHATTERJEE, formerly in The John Percy Research Group in Process Metallurgy, Imperial College of Science and Technology, University of London, England

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Chatterjee, A., Bradshaw, A.V. The influence of gas phase resistance on mass transfer to a liquid metal. Metall Trans 4, 1359–1364 (1973). https://doi.org/10.1007/BF02644533

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  • DOI: https://doi.org/10.1007/BF02644533

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