Effect of batch size on mechanical properties of granules in high shear granulation

C Mangwandi, Michael Adams, MJ Hounslow, AD Salman

Research output: Contribution to journalArticle

24 Citations (Scopus)


The flow patterns in a high shear granulator depend on the fill volume. For example, DEM simulations reported by Terashita et al. [1] show that fill volume affects the velocities and kinetic energies of the particles. It also influences the granule size distribution [2]. Here the effects on the properties of the granule are described. The total mass of the granulate material was varied without changing the other variables such as impeller speed, granulation time and liquid to solid ratio. The resulting mechanical properties, such as strength, yield stress and Young's modulus, of the granules were measured. For the materials studied in the current work, increasing the fill factor (batch size) increased the values of these material parameters. This could be explained by the relative increase in the number and intensity of collisions between the particles, when the size of a batch was increased, leading to smaller porosities. (c) 2010 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)44-52
Number of pages9
JournalPowder Technology
Issue number1-2
Publication statusPublished - 1 Jan 2011


  • Fill factor
  • Granules strength
  • Circularity
  • Batch size
  • Diametric compression
  • Compression


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