A breakage and adhesion regime map for the normal impact of loose agglomerates with a spherical target
Artikel i vetenskaplig tidskrift, 2015

Discrete element method-based analysis is conducted to investigate the effects of interface energy between particles on the breakage and adhesion of loose agglomerates upon impact with a spherical target. A mechanistic approach is tested to find a relationship between particle properties, kinetic energy, and the agglomerate structure after the impact, which resulted in a new dimensionless number, the ratio of the two interface energies. In combination with Δ, a dimensionless number relating incident kinetic energy to agglomerate strength (Moreno-Atanasio and Ghadiri M, Chem Eng Sci. 2006;61(8):2476-2481), a good description of the agglomerate impact is obtained. The agglomerate structure after impact is mapped using the two dimensionless numbers and is in good agreement with experimental observations. The constructed regime map can serve as a guide for selecting preliminary process parameters in adhesive particle mixing.

Regime map

DEM

Breakage

Adhesion

Loose agglomerates

Författare

Duy Nguyen

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk miljövetenskap

Anders Rasmuson

Chalmers, Kemi och kemiteknik, Kemiteknik, Kemisk miljövetenskap

K. Thalberg

I. Niklasson Björn

AICHE Journal

0001-1541 (ISSN) 1547-5905 (eISSN)

Vol. 61 4059-4068

Ämneskategorier

Kemiteknik

Styrkeområden

Livsvetenskaper och teknik

DOI

10.1002/aic.14922