Mechanisms governing the packing of bagasse into grooves during uniaxial compression

Kauppila, D.J., Loughran, J.G., and Kent, G.A. (2001) Mechanisms governing the packing of bagasse into grooves during uniaxial compression. Proceedings of the Australian Society of Sugar Cane Technologists, 23. pp. 421-427.

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The use of various V-groove roller configurations in the milling of sugar cane dates back over 150 years. One phenomenon that remains poorly understood is the deformation state of the blanket during compression between grooved rolls, and more specifically the mechanisms that govern the packing of bagasse into roll grooves. Improved understanding of such fundamental issues will in turn build knowledge with regard to the influence of varying groove geometry on the milling of prepared cane and bagasse. This paper reports on the results of an experimental program to assess the key mechanisms controlling the penetration of prepared cane into V-grooved platens. Uniaxial compression tests were conducted using several blanket depths, inc1uding deep blankets, and four varied groove geometries, inc1uding two platen sets with a 50 mm pitch. The results identified two particular groove penetration mechanisms: 1) the folding of a lightly consolidated blanket into the grooves; 2) the shearing of a heavily consolidated blanket at the tips of the grooves. Each of these blanket 'failure' modes results in a different form of groove packing with the potential to influence dewatering behaviour. A non-dimensional factor that identifies the approximate point of transition between the two failure modes is defined.

Item ID: 13392
Item Type: Article (Research - C1)
ISSN: 0726-0822
Keywords: blanket depth; dewatering; friction/wear lubrication; grooving; itch; penetration
Date Deposited: 04 Mar 2013 01:26
FoR Codes: 09 ENGINEERING > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified @ 100%
SEO Codes: 82 PLANT PRODUCTION AND PLANT PRIMARY PRODUCTS > 8203 Industrial Crops > 820304 Sugar @ 100%
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