Chapter 10. Solid–Liquid Mixing

  1. Edward L. Paul3,
  2. Victor A. Atiemo-Obeng4,
  3. Suzanne M. Kresta5
  1. Victor A. Atiemo-Obeng4,
  2. W. Roy Penney1,
  3. Piero Armenante2

Published Online: 30 JAN 2004

DOI: 10.1002/0471451452.ch10

Book Title

Handbook of Industrial Mixing: Science and Practice

Handbook of Industrial Mixing: Science and Practice

Additional Information

How to Cite

Atiemo-Obeng, V. A., Penney, W. R. and Armenante, P. (2004) Solid–Liquid Mixing, in Handbook of Industrial Mixing: Science and Practice (eds E. L. Paul, V. A. Atiemo-Obeng and S. M. Kresta), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471451452.ch10

Editor Information

  1. 3

    Merck & Co., Inc. (retired); 308 Brooklyn Boulevard, Sea Girt, NJ 08750, USA

  2. 4

    The Dow Chemical Company, Building 1776, Midland, MI 48674, USA

  3. 5

    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, Canada T6G 2G6

Author Information

  1. 1

    Department of Chemical Engineering, University of Arkansas, 3202 Bell Engineering Center, Fayetteville, AR 72701, USA

  2. 2

    Otto H. York Department of Chemical Engineering, New Jersey Institute of Technology, University Heights, Newark, NJ 07102-1982, USA

  3. 4

    The Dow Chemical Company, Building 1776, Midland, MI 48674, USA

Publication History

  1. Published Online: 30 JAN 2004
  2. Published Print: 14 NOV 2003

ISBN Information

Print ISBN: 9780471269199

Online ISBN: 9780471451457

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CHAPTER TOOLS

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Keywords:

  • solid–liquid systems;
  • off-bottom suspension;
  • just suspended state;
  • Njs;
  • solid dispersion;
  • solids distribution;
  • solid–liquid mass transfer coefficient;
  • solid dissolution;
  • solid distribution;
  • floating solids;
  • non-wetting solids

Summary

The focus of this chapter is on mixing operations in mechanically stirred vessels which involve dispersion of solids in liquids. The minimum agitation speed to achieve the just off-bottom suspended state, Njs, is defined, and experimental approaches to its determinations are provided. Correlations for the prediction of Njs are provided for different impeller-vessel configurations, geometric and physical parameters, and operating conditions. Correlations for the determination of solid–liquid mass transfer coefficients are also given, as well as the equations to determine the rate of solid dissolution, and the time to achieve complete dissolution. Limitations on the draw down of floating solids, and on the distribution of solids throughout the vessel are discussed. Examples for the calculation of Njs and other variables of importance in solid–liquid systems are provided.

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