Heat Transfer Analysis of Lance Skulling in Top Blown Oxygen Steelmaking converters

Havelia, Sarthak and Malathi, M and Deo, Brahma (2004) Heat Transfer Analysis of Lance Skulling in Top Blown Oxygen Steelmaking converters. In: International Symposium of Research Students on Material Science and Engineering, December 20-22, 2004, Chennai, India.

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The lance used for blowing oxygen in top blown oxygen steelmaking converters (BOF) is water-cooled. Deposition of metal on the lance surface results in an increase in the diameter and mass of the lance. If the deposition (skulling) is excessive, it may cause severe operational difficulties in taking out the lance from the vessel after the blow is over. The temperature difference of inlet and exit cooling water circulating inside the lance is a direct measure of the condition of the lance. An iterative calculation procedure using a computer program has been developed, for the case of a lance used in a 100T vessel, to study the effect of solidification of molten metal (skulling) on the lance body on the exit water temperatures. For the first time, the effect of radiation from hot spots has been taken into account and it turns out to be the most significant factor in heat transfer.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://metallurgy.iitm.ac.in/isrs/isrs04/cd/conten...
Uncontrolled Keywords:Heat transfer, Lance, Skulling, Hot Spots and View Factor
Divisions:Metal Extraction and Forming
ID Code:1160
Deposited By:Malathi M
Deposited On:22 Jun 2010 17:40
Last Modified:12 Dec 2011 14:44
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