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Full-Text Articles in Engineering
Experiments And Modelling Of Micro-Jet Assisted Fluidization Of Nanoparticles, J. Ruud Van Ommen, David M. King, Alan Weimer, Robert Pfeffer, Berend Van Wachem
Experiments And Modelling Of Micro-Jet Assisted Fluidization Of Nanoparticles, J. Ruud Van Ommen, David M. King, Alan Weimer, Robert Pfeffer, Berend Van Wachem
The 13th International Conference on Fluidization - New Paradigm in Fluidization Engineering
The fluidization of nanoparticle agglomerates can be largely improved by using downward pointing micronozzles, creating a high-velocity jet, as experimentally shown. By discrete particle simulations – treating the agglomerates as single particles – we show that the main reason is probably the reduction of the agglomerate size by agglomerate-agglomerate collisions.
Fluidization Of Nanopowders: Experiments, Modeling, And Applications, J. Ruud Van Ommen, Robert Pfeffer
Fluidization Of Nanopowders: Experiments, Modeling, And Applications, J. Ruud Van Ommen, Robert Pfeffer
The 13th International Conference on Fluidization - New Paradigm in Fluidization Engineering
Nanopowders are applied in a wide range of processes, and their use continues to increase. Fluidization is one of the best techniques available to disperse and process nanoparticles. However, nanoparticles cannot be fluidized individually; they fluidize as very porous agglomerates. Often, it is needed to apply an assisting method, such as vibration or microjets, to obtain proper fluidization. In this paper, we give a brief review of the developments in nanopowder fluidization.
Vibro-Fluidization Characteristics For Size Arranged Agglomerates, Yoshihide Mawatari, Yuji Tatemoto, Katsuji Noda, Masato Yamamura, Hiroyuki Kage
Vibro-Fluidization Characteristics For Size Arranged Agglomerates, Yoshihide Mawatari, Yuji Tatemoto, Katsuji Noda, Masato Yamamura, Hiroyuki Kage
The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering
Fine cohesive powders (Geldart’s group-C) were fluidized with a vibro-fluidized bed. Diameters of the powder used in this study were 0.2μm. For 0.2μm titanium oxide powder, stable and relatively large agglomerates were observed. In this study, the size distribution of agglomerates was arranged by sieving to examine its effect on the fluidization characteristics, such as the minimum fluidization velocity, the minimum bubbling velocity and the bed expansion ratio. The fluidization characteristics were drastically influenced by the size distribution of agglomerates. It was found that the size arrangement of agglomerates was one of the factors to obtain stable fluidization state for …