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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 67  2008
Failure Mechanism of Alumino Silicate Refractories in Anode Baking Furnace
B. Mishra*, B. B. Sahu and B. K. Panda
Pages : 147-150
DOI : 10.1080/0371750X.2008.11078651
Abstract
Anode baking furnaces is an integral part of aluminium industry. In this furnace, anodes are baked to use in electrolytic reduction. Depending on the design either open top or closed top furnaces are employed. Till date, alumino-silicate refractories are the choicest material due to low cost, low creep under compression, high resistance to thermal cycle, carbon monoxide disintegration and alkali attack. This paper deals with failure mechanism of such type of refractories. Used samples from a Reid Hammer bake oven have been studied to find out the reasons of failure. The failure has occurred due to thermo-mechanical, pyro-chemical stresses and alkali attack in reducing condition. Out of different reasons of failure, alkali attack in reducing condition is found to be the prime cause for failure.
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