Method for monitoring the wear and extending the life of blast furnace refractory lining
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United States of America Patent
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Apr 6, 1999
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app pub date -
Sep 26, 1997
filing date -
Sep 26, 1997
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Abstract
A method is provided for on-line monitoring of the wear of a refractory lining of a blast furnace and for extending the life of said lining. The method includes determining the wear line of the lining from signals of temperature probes embedded at spaced locations across the thickness of the refractory using a one dimensional heat transfer model to locate a first approximation of a solidification isotherm of hot metal in the furnace, using the one dimensional heat transfer approximation as an initial boundary in a moving boundary calculation of a two dimensional heat transfer model and iterating the two dimensional model to find a final location of the isotherm by minimizing the difference between the measured and predicted temperatures of the thermoprobes.
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