Lining for Carbothermic Reduction Furnace
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United States of America Patent
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Sep 2, 2008
filing date -
May 13, 2004
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Abstract
An inner lining for the steel shell of a carbothermic reduction furnace for the production of alumina has a base layer of graphite and a coating layer of refractory material. The refractory material is corundum (Al.sub.2O.sub.3) bound by Sialon (Si.Al.O.N). The lining structure provides protection against the molten slag and it is not attacked by the CO-rich melt furnace atmosphere. Further, the lining does not contaminate the melt and it provides an effective heat dissipation system in case of a power shut-off.
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