Chirone, R;
Raganati, F;
Ammendola, P;
Barletta, D;
Lettieri, P;
Poletto, M;
(2018)
A comparison between interparticle forces estimated with direct powder shear testing and with sound assisted fluidization.
Powder Technology
, 323
pp. 1-7.
10.1016/j.powtec.2017.09.038.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | A comparison between interparticle forces estimated with direct powder shear testing and with sound assisted fluidization |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.powtec.2017.09.038 |
| Publisher version: | http://dx.doi.org/10.1016/j.powtec.2017.09.038 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Sound assisted fluidization, Fine and ultrafine cohesive powders, Interparticle forces, Cluster/subcluster model |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10022672 |
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