Effect of particle shape on packing properties during tapping

Citation
T. Miyajima et al., Effect of particle shape on packing properties during tapping, ADV POW TEC, 12(1), 2001, pp. 117-134
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemical Engineering
Journal title
ADVANCED POWDER TECHNOLOGY
ISSN journal
0921-8831 → ACNP
Volume
12
Issue
1
Year of publication
2001
Pages
117 - 134
Database
ISI
SICI code
0921-8831(2001)12:1<117:EOPSOP>2.0.ZU;2-8
Abstract
In order to investigate the effects of particle properties, including parti cle shape, on packing characteristics of particles with tapping, changes in the void fraction epsilon in a tapping particle bed were measured using so me materials differing in particle shape, size dp and density p. The partic le shapes were characterized by image analysis of random-oriented particles and evaluated by a pair of shape indices, circularity <(<phi>)over bar> an d smoothness <(<zeta>)over bar>. As a result, it was confirmed that changes in the void fraction with tapping number n can be given by a simple equati on: (epsilon - epsilon (f))/(epsilon (0) - epsilon (f)) = exp(-kn(q)). Furthermore, the effects of particle properties <(<phi>)over bar>, <(<zeta> )over bar>,(dp) over bar and rho on the initial and final void fractions so and sc in a packed bed, and on the parameters k and q were clarified by mu ltiple regression analysis of the experimental results.