%D 2018
%O This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
%T A comparison between interparticle forces estimated with direct powder shear testing and with sound assisted fluidization
%A R Chirone
%A F Raganati
%A P Ammendola
%A D Barletta
%A P Lettieri
%A M Poletto
%X Understanding the role of the interparticle forces in fluidization of cohesive powders is crucial for a proper application of fluidization to these type of powders. However, a direct measure of the interparticle interactions (IPFs) is challenging, mainly because cohesive particles cannot be fluidized under ordinary conditions. That is the reason why IPFs are typically measured using a rheological approach. The aim of this study is, therefore, to evaluate the IPFs of cohesive powders under actual fluidization conditions, by using an experimental and theoretical approach. In particular, a sound assisted fluidized bed apparatus was used to achieve a fluidization regime of the particles. Then, the cluster/subcluster model was applied to calculate IPFs, starting from the experimental data. The obtained IPFs were then compared to those evaluated by using a shear testing approach.
%J Powder Technology
%K Sound assisted fluidization, Fine and ultrafine cohesive powders, Interparticle forces, Cluster/subcluster model
%L discovery10022672
%V 323
%P 1-7