Ku, N, Hare, CL, Ghadiri, M et al. (2 more authors) (2015) Effect of mechanical vibration on the size and microstructure of titania granules produced by auto-granulation. Powder Technology, 286. 223 - 229. ISSN 0032-5910
Abstract
Auto-granulation is the growth of particle clusters of fine, cohesive powders due to agitation of the bed, such as mechanical vibration. This clustering occurs without the addition of any binder to the system and the granules reach an equilibrium size due to the balance between disruptive and adhesive forces experienced by the clusters during process operations. For this reason, it is important in powder processing to be able to characterize this behavior. In this study, a sub-micron titania powder is mechanically vibrated under controlled conditions to induce clustering and promote auto-granulation. The amplitude and frequency of the vibration are varied to view their effect on the equilibrium granule size. Furthermore, imaging of cross-sections of the granules is conducted to provide insight into the internal microstructure and measure the packing fraction of the constituent particles. It is found that under all vibrational conditions investigated the particles exhibit a core–rim microstructure.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 Published by Elsevier B.V. This is an author produced version of a paper published in Powder Technology. Uploaded in accordance with the publisher's self-archiving policy |
Keywords: | cohesion; granulation; vibration; microstructure |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Particle Science and Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 28 Aug 2015 12:55 |
Last Modified: | 08 Jun 2016 02:24 |
Published Version: | http://dx.doi.org/10.1016/j.powtec.2015.05.041 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.powtec.2015.05.041 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:89285 |