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    Seeded granulation

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    Publication date
    2011
    Author
    Rahmanian, Nejat
    Ghadiri, M.
    Jia, X.
    Keyword
    REF 2014; High shear granulator; Granulation; Structure characterisation; Cyclomix; X-ray micro-tomography; Seeding
    
    Metadata
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    Abstract
    A novel method for manufacturing granules with a large particle at their core, referred to as seeded granules, is presented. As an example, calcium carbonate powders (Durcal) of different grades are used as primary particles and polyethylene glycol (PEG) as liquid binder in high shear granulators of different scales (Cyclomix, manufactured by Hosokawa Micron B.V., The Netherlands). The conditions giving rise to seeded granulations are specified in the form of an operational regime map. It is found that the seeded structure is strongly dependent on the impeller speed and the primary particles size distribution. It is shown that a Stokes number of around 0.1 represents the optimal dynamic conditions in the given example for producing seeded granules, regardless of the scale of the granulator.
    URI
    http://hdl.handle.net/10454/6145
    Citation
    Rahmanian, N., Ghadiri, M., Jia, X. (2011a) Seeded granulation. Powder Technology, 206(1-2), 53-62.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.powtec.2010.07.011
    Type
    Article
    Collections
    Engineering and Digital Technology Publications

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