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Size Segregation Studies Using a Primary Segregation Shear Cell

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  024033,  2002 ASAE Annual Meeting . (doi: 10.13031/2013.10953) @2002
Authors:   P. Tang, V. M. Puri, and P.H. Patterson
Keywords:   Size segregation, granular material, bulk solids, poultry feed

Size segregation induced by the percolation mechanism is pervasive in numerous industries such as agriculture, ceramic, chemical, food, pharmaceutical, and powdered metal. A redesigned, second generation primary segregation shear cell (PSSC-II) is being developed to simulate the size segregation occurring in two different poultry feed trough delivery systems (drag chain and auger). The critical parameters in the development of the PSSC-II include: powder bed depth, maximum powder bed strain, strain rate, and particle/granule size ratios. Based on these results, quantitative relationships between fine percolation rates and feed flowability, size ratio, as well as other PSSC-II parameters are being developed. In addition, the effect of size segregation during the delivery of feed to the birds on quality and quantity of egg production are being evaluated.

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