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Breakage characteristics of granulated food products for prediction of attrition during lean-phase pneumatic conveying

Breakage characteristics of granulated food products for prediction of attrition during lean-phase pneumatic conveying

Kotzur, Benjamin A., Bradley, Michael S.A., Berry, Robert J. and Farnish, Richard J. (2016) Breakage characteristics of granulated food products for prediction of attrition during lean-phase pneumatic conveying. International Journal of Food Engineering, 12 (9). ISSN 1556-3758 (Print), 2194-5764 (Online) (doi:10.1515/ijfe-2016-0045)

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Abstract

Pneumatic conveying is utilised in a variety of industries to convey food products exhibiting diverse handling characteristics. Attrition of particles caused by this conveying process can result in a number of undesirable outcomes such as loss in product quality or issues in subsequent handling processes. The ability to predict the breakage behaviour of particulate materials is desirable in both new system design and resolving issues in existing plants. This work considers two different particulate materials (Salt and Golden Breadcrumbs) across a range of particle sizes, and quantifies their breakage behaviour under varying impact conditions. Narrow size fractions of each material was degraded; material retained on 250 µm and 355 µm sieves for salt, and 500µm, 710µm and 1000 µm sieves for Golden Breadcrumbs. Velocity was found to be the most influential factor with respect to particle attrition. The results from the narrow size fraction tests were superimposed to form a simulated full size distribution breakage behaviour, which was then compared to the experimentally determined behaviour. A good agreement was found, however the proportion of material predicted for size fractions smaller than 355 µm for Golden Breadcrumbs and 180 µm for Salt was under-predicted. Recommendations for increasing accuracy of the prediction method are given.

Item Type: Article
Uncontrolled Keywords: Particle attrition, Lean-phase, Pneumatic conveying
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Applied Engineering & Management
Faculty of Engineering & Science > Wolfson Centre for Bulk Solids Handling Technology
Last Modified: 05 Sep 2017 13:36
Selected for GREAT 2016: None
Selected for GREAT 2017: GREAT a
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/15667

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