Effect of chute level on mill capacity

Kent, Geoffrey Alan (2013) Effect of chute level on mill capacity. In Hogarth, D.M. (Ed.) Proceedings of the International Society of Sugar Cane Technologists, Sociedade dos Tecnicos Acucareiros e Alcooleiros do Brasil & The XXVIIIth ISSCT Organising Committee, Sao Paulo, Brazil, pp. 1584-1594.

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Abstract

IN MANY FACTORIES, the feed chute of the first mill is operated with a high chute level for the purpose of maximising the cane rate through the mill. There is a trend towards trying to control chute level within a small control range near the top of a chute that can result in rapid changes in cane feeding rate to maintain the chute level set point. This paper reviews the theory that predicts higher cane rate with higher chute level and discusses the main weakness in the theory that it does not consider the beneficial effect on capacity of cane falling from the top of the chute to the top surface of the cane mat. An extension to the chute theory model is described that predicts higher capacity with lower chute level because of the effect of the falling cane. The original model and this extended model are believed to be the upper and lower limits to the true effect. The paper reports an experiment that measured the real effect of chute level on capacity and finds that increasing chute level does lead to higher capacity but that the trend is only about one-third as strong as the original theory predicted. The paper questions whether the benefits of slightly greater capacity outweigh the costs of operating with the small control range near the top of the chute.

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ID Code: 77914
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Chute, Mill, Capacity, Level, Model, Control
ISBN: 9780949678270
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > FOOD SCIENCES (090800) > Food Processing (090805)
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Copyright Owner: Copyright 2013 STAB & The XXVIIIth ISSCT Organising Committee
Deposited On: 21 Oct 2014 23:00
Last Modified: 26 Oct 2015 01:11

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