A nuclei size distribution model including nuclei breakage

Liu, L. X., Zhou, L., Robinson, D. J. and Addai-Mensah, J. (2013) A nuclei size distribution model including nuclei breakage. Chemical Engineering Science, 86 19-24. doi:10.1016/j.ces.2012.04.009

Author Liu, L. X.
Zhou, L.
Robinson, D. J.
Addai-Mensah, J.
Title A nuclei size distribution model including nuclei breakage
Journal name Chemical Engineering Science   Check publisher's open access policy
ISSN 0009-2509
Publication date 2013-02-04
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.ces.2012.04.009
Volume 86
Start page 19
End page 24
Total pages 6
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2013
Language eng
Abstract In this work, a nucleation model that includes nuclei breakage/fragmentation is proposed. The model is based on the nucleation model of Hapgood and the Stokes deformation number calculated from the granule dynamic yield strength from the previously reported granule breakage work. It is proposed that breakage or fragmentation of primary nuclei from binder spray will occur if the Stokes deformation number exceeds a certain critical number. In the case where breakage occurs the model for secondary nuclei size distribution is proposed. To validate the model, the characteristics of the primary nuclei formed from nickel laterite ores with diluted sulphuric solutions as a binder were investigated. The nuclei were produced by dropping the binder solution onto a stationary powder bed. The mechanical integrity of the primary nuclei formed, the relationship between the nuclei diameter and binder drop diameter were studied. The Stokes deformation numbers for nickel laterite powders with different particle size in a lab scale drum granulator were calculated and the nuclei size distributions with different nickel laterite feed powders are predicted.
Keyword Agglomeration
Nuclei size distribution model
Nuclei breakage
Primary nuclei
Secondary nuclei
Nickel laterite
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 14 April 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2013 Collection
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