Abstract
The mixing of powders and granular materials is a common and significant operation in the processing industries but we know surprisingly little about how equipment works and how performance is affected by particle properties. Such considerations gave rise to a substantial body of work in the 1970s conducted largely at the University of Oxford. Fundamental issues in mixing have been discussed at some length previously (Bridgwater, 1976). Here the overall findings from the group, led by the author of this chapter, are presented.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Bagster, D.F. and Bridgwater, J., The flow of granular material over a moving blade, Powder Technol., 3, 323–338, 1970.
Bridgwater, J., Fundamental powder mixing mechanisms, Powder Technol., 15, 215–236, 1976.
Bridgwater, J., On the width of failure zones, Géotechnique, 30, 533–536, 1980a.
Bridgwater, J., Self-diffusion coefficients in deforming powders, Powder Technol, 25, 129–131, 1980b.
Bridgwater, J. and Ingram, N.D., Rate of spontaneous inter-particle percolation, Trans. Inst. Chem. Eng., 49, 163–169, 1971.
Bridgwater, J. and Scott, A.M., Statistical models of packing: application to gas absorption and solids mixing, Trans. Inst. Chem. Eng., 52, 317–324, 1974.
Bridgwater, J., Bagster, D.F., Chen, S.F. and Hallam, J.H., Geometric and dynamic similarity in particle mixing, Powder Technol. 2, 198–206, 1969a.
Bridgwater, J., Sharpe, N.W. and Stocker, D.C., Particle mixing by percolation, Trans. Inst. Chem. Eng., 47, T114–T119, 1969b.
Bridgwater, J., Cooke, M.H. and Scott, A.M., Interparticle percolation: equipment development and mean percolation velocities, Trans. Inst. Chem. Eng., 56, 157–167, 1978.
Bridgwater, J., Cook, H.H. and Drahun, J.A., Strain induced percolation, I, Chem. E. Symp. Ser., 69, 171–191, 1983.
Bridgwater, J., Foo, W. S. and Stephens, D.J., Particle mixing and segregation in failure zones: theory and experiment, Powder Technol., 41, 147–158, 1985.
Cooke, M.H. and Bridgwater, J., Interparticle percolation: a statistical mechanical interpretation, Ind. Eng. Chem. Fund., 18, 25–27, 1979a.
Cooke, M.H. and Bridgwater, J., Modelling particle motion down surfaces and in free flight, Powder Bulk Solids Technol., 3, 11–19, 1979b.
Cooke, M.H. and Bridgwater, J., The simulation of a particle disperser, Powder Technol., 33, 239–247, 1982.
Cooke, M.H., Bridgwater, J., and Scott, A.M., Interparticle percolation: lateral and axial diffusion coefficients, Powder Technol., 21, 183–193, 1978.
Drahun, J.A. and Bridgwater, J., Free surface segregation, I, Chem. E. Symp. Ser., 65, S/Q/l–S/Q/14, 1981.
Drahun, J.A. and Bridgwater, J., The mechanisms of free surface segregation, Powder Technol, 36, 39–53, 1983.
Foo, W.S. and Bridgwater, J., Particle migration, Powder Technol., 36, 271–273, 1983.
Masliyah, J. and Bridgwater, J., Particle percolation: a numerical study, Trans. Inst. Chem. Eng., 52, 31–42, 1974.
Roscoe, K.H. The influence of strain in soil mechanics, Géotechnique, 20, 129–170, 1970.
Schofield, A.N. and Wroth, C.P., Critical State Soil Mechanics, McGraw-Hill, London, 1968.
Scott, A.M. and Bridgwater, J., Interparticle percolation: a fundamental solids mixing mechanism, Ind. Eng. Chem. Fund., 14, 22–27, 1975.
Scott, A.M. and Bridgwater, J., Self-diffusion of spherical particles in a simple shear apparatus, Powder Technol., 14, 177–183, 1976.
Stephens, DJ. and Bridgwater, J., The mixing and segregation of cohesionless particulate materials. I. Failure zone formation, Powder Technol., 21, 17–28, 1978a.
Stephens, D.J. and Bridgwater, J., The mixing and segregation of cohesionless particulate materials. II. Microscopic mechanisms for particles differing in size, Powder Technol., 21, 29–44, 1978b.
Tranter, I. and Bridgwater, J., The effect of interstitial liquid on inter-particle percolation, J. Powder Bulk Solids Technol., 2, 9–14, 1978.
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1994 Springer-Verlag New York, Inc.
About this chapter
Cite this chapter
Bridgwater, J. (1994). Mixing and Segregation Mechanisms in Particle Flow. In: Mehta, A. (eds) Granular Matter. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-4290-1_6
Download citation
DOI: https://doi.org/10.1007/978-1-4612-4290-1_6
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4612-8725-4
Online ISBN: 978-1-4612-4290-1
eBook Packages: Springer Book Archive