The importance of wet-powder dynamic mechanical properties in understanding granulation

Iveson, Simon M., Page, Neil W. and Litster, James D. (2003) The importance of wet-powder dynamic mechanical properties in understanding granulation. Powder Technology, 130 1-3: 97-101. doi:10.1016/S0032-5910(02)00233-4


Author Iveson, Simon M.
Page, Neil W.
Litster, James D.
Title The importance of wet-powder dynamic mechanical properties in understanding granulation
Journal name Powder Technology   Check publisher's open access policy
ISSN 0032-5910
Publication date 2003-02
Sub-type Article (original research)
DOI 10.1016/S0032-5910(02)00233-4
Volume 130
Issue 1-3
Start page 97
End page 101
Total pages 5
Editor J.P.K.Seville
Place of publication Albi, France
Language eng
Subject 290000 Engineering and Technology
290600 Chemical Engineering
290602 Process Control and Simulation
EX
Abstract Granule impact deformation has long been recognised as important in determining whether or not two colliding granules will coalesce. Work in the last 10 years has highlighted the fact that viscous effects are significant in granulation. The relative strengths of different formulations can vary with strain rate. Therefore, traditional strength measurements made at pseudo-static conditions give no indication, even qualitatively, of how materials will behave at high strain rates, and hence are actually misleading when used to model granule coalescence. This means that new standard methods need to be developed for determining the strain rates encountered by granules inside industrial equipment and also for measuring the mechanical properties of granules at these strain rates. The constitutive equations used in theoretical models of granule coalescence also need to be extended to include strain-rate dependent components.
Keyword Granulation
Agglomeration
Dynamic strength
Viscosity
Coalescence modelling
Q-Index Code EX

 
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Created: Tue, 13 Mar 2007, 16:14:31 EST by Fei Yu on behalf of School of Engineering