Optimum solids concentration in an agitated vessel

Wang, S, Parthasarathy, R, Wu, J and Slatter, P 2014, 'Optimum solids concentration in an agitated vessel', Industrial & Engineering Chemistriy Research, vol. 53, no. 10, pp. 3959-3973.


Document type: Journal Article
Collection: Journal Articles

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Title Optimum solids concentration in an agitated vessel
Author(s) Wang, S
Parthasarathy, R
Wu, J
Slatter, P
Year 2014
Journal name Industrial & Engineering Chemistriy Research
Volume number 53
Issue number 10
Start page 3959
End page 3973
Total pages 15
Publisher American Chemical Society
Abstract Particle suspension in high-concentration slurries has been studied using radial-, mixed-, and axial-flow impellers. Impeller power measurements in this study were linked to the mass of solids suspended in the agitation system rather than the suspension volume. This approach was based on the consideration that the rate of dissolution or reaction depends to a large extent on the exposed surface area or mass of solids and might not be affected by the suspension volume, once off-bottom suspension is achieved. It was found that the specific power, based on the mass of solids, can be minimized by operating the system at relatively higher solids concentrations in the range of 0.20-0.35 (v/v) for the solids, impeller types, and geometrical conditions used in this work. Overall, improved energy efficiency can be achieved by using higher-power-number impellers under unbaffled conditions over a range of solids concentrations. A case example is illustrated to demonstrate the benefits of adopting some of the optimization methods highlighted in this article.
Subject Chemical Engineering Design
Keyword(s) Solids suspension
Agitated Vessels
Energy Efficiency
Mineral Processing
DOI - identifier 10.1021/ie402252c
Copyright notice © 2014 American Chemical Society
ISSN 0888-5885
Additional Notes This document is the Accepted Manuscript version of a Published Work that appeared in final form in the Journal of Industrial & Engineering Chemistry Research, copyright © 2014 American Chemical Society after peer review and technical editing by the publisher.
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