Impact breakage of spherical granules: Experimental study and DEM simulation

Journal
Chemical engineering and processing  
Volume
45
Issue
10
Start Page
838
End Page
856
Citation
Chemical Engineering and Processing 45 (10): 838-856 (2006-10)
Publisher DOI
10.1016/j.cep.2005.12.005
Scopus ID
2-s2.0-33747074661
A single impact granule test has been used to study the breakage behaviour of granules. The impact experiments are performed for three spherical granules (γ-Al2O3, synthetic zeolite Köstrolith® and sodium benzoate) at different velocities (from 10 to 50 m/s). The elastic and plastic breakage behaviours during the impact are explained with the help of SEM image analysis of fragments. It has been shown that the breakage behaviour is strongly dependent on the microscopic and macroscopic structure of the granules. The breakage probability is approximated by Weibull statistics. A two-dimensional discrete element simulation of the granule-wall impact at different velocities has been performed to investigate the breakage behaviour of the granules.
Subjects
Breakage mechanism
Breakage probability
DEM simulation
Granules
Impact test