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Study on Air Tubes Failure in Sponge Iron Rotary Kiln
Published in 2015
The rotary kiln process is a commonly practiced method in the industry for producing sponge iron using coal. In the industry, there have been recent reports of premature failures of certain air tubes in a rotary kiln. Most of those cases have concentrated on those air tubes which run into the kiln around the middle portion of the kiln. This research work aims at identifying the probable cause of the failure. Two different types of kiln models (Front view and Side view 2-D models) were constructed and a temperature profile and an air-flow velocity profile were obtained. The causes of failures were identified as steep temperature changes in some zones of the air tubes.
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