1. Interparticle forces
By definition, the fluidized state is reached when the drag force exerted by the gas offsets the force of gravity. So it's easy to imagine that a fluidized bed will behave differently if cohesive forces are added between the particles.
Historically, a great deal of research has been carried out to characterize the fluidization of Class A particles. According to Geldart et al.
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Interparticle forces
Bibliography
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(1) - GELDART (D.), HARNBY (N.), WONG (A.C.) -
Fluidization of cohesive powders.
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Powder Technology, 37, p. 25-37 (1984).
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(2) - MOLERUS (O.) -
Interpretation of Geldart's type A, B, C and D powders by taking into account...
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