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This paper presents some preliminary observations on sound-assisted fluidization of hydrophobic fumed silica nanoparticles (Degussa Aerosil(R) R974, having a primary particle size of 12 nm) in the form of large 100-400 μm agglomerates. The effect of sound on the fluidization behavior of the nanoparticle agglomerates, including the fluidization regime, the minimum fluidization velocity, the bed pressure...
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