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dc.contributor.authorRahmanian, Nejat
dc.contributor.authorGhadiri, M.
dc.contributor.authorJia, X.
dc.contributor.authorStepanek, F.
dc.date.accessioned2014-04-28T11:14:25Z
dc.date.available2014-04-28T11:14:25Z
dc.date.issued2009
dc.identifier.citationRahmanian, N., Ghadiri, M., Jia, X., Stepanek, F. (2009) Characterisation of granule structure and strength made in a high shear granulator. Powder Technology, 192(2), 184-194.
dc.identifier.urihttp://hdl.handle.net/10454/6143
dc.description.abstractResults of a study of the influence of impeller speed on the strength, structure and morphology of granules produced in a type of high shear mixer granulators are reported. Calcium carbonate particles (Durcal 65) have been granulated in a Cyclomix with a capacity of 5 L. An aqueous solution of polyethylene glycol was used as the binder. The granules produced have been dried and their structure visualized using X-ray micro-tomography equipment, Nanotom, with a resolution of less than 1 μm. It is shown that the operation of the granulator at high impeller tip speeds produces granules with a higher strength and lower porosity than those produced at medium and low impeller speeds. Two different granule micro-structures and morphologies are produced at high and low impeller speeds. Structure descriptors such as phase volume fraction (as representative of porosity), chord length distribution and auto-correlation function (as indices of homogeneity of structure) are used to quantify the internal structure of granules in 3D, which in turn affects the granule strength.en
dc.relation.isreferencedbyhttp://dx.doi.org/10.1016/j.powtec.2008.12.016
dc.subjectREF 2014; High shear mixer granulator; Structure characterisation; Strength characterisation; Cyclomix; X-ray micro-tomography; Porosity
dc.titleCharacterisation of granule structure and strength made in a high shear granulator
dc.typeArticle


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