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Fluidization of Fine Powders pp 65–73Cite as

Fluidization of Nanopowders

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Part of the book series: Particle Technology Series ((POTS,volume 18))

Abstract

Gas-fluidized beds of some nanopowders exhibit a nonbubbling fluid-like behavior as seen for conditioned fine powders. For example, powders of moderate density nanoparticles, such as silica nanoparticles, can be fluidized by a gas in a nonbubbling fluid-like regime. The suppression of macroscopic gas bubbles in fluidized beds of nanoparticles has been causally related to the formation of porous light aggregates. A phenomenological approach described in this chapter to analyze the behavior of gas-fluidized beds of nanoparticles is to consider aggregates as effective lightweight spheres which may exhibit non-bubbling gas-fluidization similarly to coarse beads fluidized by liquids. These complex-aggregates would be formed by a dynamic aggregation of simple-aggregates pre-existing to fluidization.

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Authors and Affiliations

  1. Faculty of Physics, University of Sevilla, Sevilla, Spain

    Prof. Dr. José Manuel Valverde Millán

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  1. Prof. Dr. José Manuel Valverde Millán
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© 2013 Springer Science+Business Media Dordrecht

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Valverde Millán, J.M. (2013). Fluidization of Nanopowders. In: Fluidization of Fine Powders. Particle Technology Series, vol 18. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5587-1_9

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