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Large-scale measurements of the physical characteristics of round vertical bubble plumes in liquids

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Abstract

The hydrodynamics of air/water plumes in a large-scale model of a metallurgical ladle were investigated. The dimensions of the cylindrical vessel were 1600-mm ID and 2250-mm total height. The air was injected through a centered nozzle. Axial and radial profiles of gas concentration, bubble frequency, and liquid and gas velocities were measured using electrical resistivity probes and a propeller flowmeter. It was found that the bubble plume is not at a fixed position but wanders away from the vertical vessel axis. This causes difficulties in the measurements, and special methods have to be designed to define and deduce reproducible values for the characteristic plume quantities. In the analysis of the data, the various physical characteristics were related toz 0, the distance from the nozzle where the axial gas concentration is 50 Pct. The maximum values of the radial profiles are presented in nondimensional correlations.

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Authors and Affiliations

  1. Mannesmann S.A., 30,000, Belo Horizonte, Brazil

    Marco A. S. C. Castello-Branco

  2. Institut für Allgemeine Metallurgie, Technical University of Clausthal, 38678, Clausthal-Zellerfeld, Germany

    Klaus Schwerdtfeger (Professor)

Authors
  1. Marco A. S. C. Castello-Branco
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  2. Klaus Schwerdtfeger
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Additional information

MARCO A.S.C. CASTELLO-BRANCO, formerly Scientist, Institut für Allgemeine Metallurgie, Technical University of Clausthal

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Castello-Branco, M.A.S.C., Schwerdtfeger, K. Large-scale measurements of the physical characteristics of round vertical bubble plumes in liquids. Metall Mater Trans B 25, 359–371 (1994). https://doi.org/10.1007/BF02663385

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  • DOI: https://doi.org/10.1007/BF02663385

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