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Improving the quality of alumina-containing sinter using water-cooled furnace shell

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Author(s): Aleksandrov A.V. | Aleksandrov V.V.

Journal: Science of Sintering
ISSN 0350-820X

Volume: 44;
Issue: 3;
Start page: 281;
Date: 2012;
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Keywords: CFD | alumina | sinter | rotary tube kiln | coal

ABSTRACT
This article deals with the use of computer modeling to develop technical solutions to ensure better quality of alumina-containing sinter. The simulation accounted for the influence of the feed materials on the thermal processes in the furnace. The energy balance (including thermal conductivity, heat convection and radiant heat exchange) was solved assuming steady state. A good correlation was observed for the actual and calculated temperatures of the solids and gases, with less than 15% discrepancy. Using the model of the furnace investigated the possibility of lowering the temperature of sintering by removing heat from the outside of the furnace shell. To reduce the sintering temperature to 1000 °C length of the refractory lined steel is 5 m, the height of the lining should not exceed - 0.06 m, the required rate of cold water - 54.7 m3/h
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