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Mixing and drying mud and ash at Tully Mill

Plaza, Floren, Booth, Andrew, Mann, Anthony P., & Kent, Geoffrey Alan (2012) Mixing and drying mud and ash at Tully Mill. In Bruce, Robin C. (Ed.) Proceedings of the 34th Conference of the Australian Society of Sugar Cane Technologists, Australian Society of Sugar Cane Technologists, Novotel Palm Cove Resort, Cairns, QLD.

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Abstract

Disposal of mud and ash, particularly in wet weather conditions, is a significant expense for mills. This paper reports on part of a process to pelletise mud and ash, aimed at making mud and ash more attractive to growers across entire mill districts. The full process and the re-constituting and centrifuging rotary vacuum filter mud part of the process were described in two papers to the 2011 conference. The component described in this paper involves aspects of mixing mud and ash with subsequent drying using boiler exit gas. The mud material needs to mix easily with boiler ash and the mixture has to feed easily into and be pneumatically conveyed by a flue gas dryer. The performance of a pilot flue gas dryer for drying mud and ash was evaluated. The mud and ash mixture was found to dry much faster than final bagasse, provided the mud and ash material was broken up into individual particles. A previously developed computer model of bagasse drying was updated to take into account the smaller particle size of the mud and ash mixture. This upgraded model predicted the performance of the pilot flue gas dryer well.

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ID Code: 50933
Item Type: Conference Paper
Keywords: Rotary vacuum filter mud, Boiler ash, Mixing, Drying
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CHEMICAL ENGINEERING (090400) > Chemical Engineering Design (090403)
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 Australian Society of Sugar Cane Technologists
Copyright Statement: 2012 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording or any information storage and retrieval system, without permission of the publisher. Published in 2012 in Mackay, Queensland, by the Australian Society of Sugar Cane Technologists.
Deposited On: 19 Jun 2012 09:02
Last Modified: 26 Jan 2013 02:05

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