Mapping of regimes for the key processes in wet granulation: foam vs. spray

Tan, Melvin X.L. and Hapgood, Karen P. 2013, Mapping of regimes for the key processes in wet granulation: foam vs. spray, AIChE journal, vol. 59, no. 7, pp. 2328-2338, doi: 10.1002/aic.14024.

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Title Mapping of regimes for the key processes in wet granulation: foam vs. spray
Author(s) Tan, Melvin X.L.
Hapgood, Karen P.ORCID iD for Hapgood, Karen P.
Journal name AIChE journal
Volume number 59
Issue number 7
Start page 2328
End page 2338
Total pages 11
Publisher Wiley-Blackwell
Place of publication Chichester, Eng.
Publication date 2013-07
ISSN 0001-1541
Keyword(s) foam granulation
high-shear mixer
regime map
wet granulation
Science & Technology
Engineering, Chemical
Summary The evaluation of foam and spray granulation mechanisms and their performances in achieving uniform liquid distribution in a high-shear mixer-granulator is presented. A regime map is presented to describe the granulation mechanisms for the foam and spray systems. Foam and spray granulation are shown to successfully create granules of well-distributed moisture at the end of wet massing despite there was a deviation from the theoretical moisture content at the end of binder addition. In the wetting and nucleation regime, spray granulation involves drop penetration nucleation outside of the drop-controlled regime, whereas foam granulation operates favorably in the mechanical dispersion regime. For foam granulation, mechanical dispersion produces more uniform granule-size distributions below the overwetting limit. Spray granulation exhibits steady granule growth, whereas foam granulation shows induction granule growth followed by rapid granule growth. The regime map provides a basis to customize formulations and compare the different foam and spray granulation mechanisms.
Language eng
DOI 10.1002/aic.14024
Field of Research 0904 Chemical Engineering
0914 Resources Engineering And Extractive Metallurgy
Socio Economic Objective 0 Not Applicable
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2013, American Institute of Chemical Engineers
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