Burned refractories with low soluble chromium
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United States of America Patent
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Jun 21, 1994
Issued Date -
N/A
app pub date -
Jan 22, 1993
filing date -
Jun 27, 1991
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Expired
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Abstract
A burned chrome-containing refractory and method which provides a refractory having less than 5 ppm total soluble chromium. Such product is obtained by adding to the starting mix less than 10 wt. % (often less than 3 wt. %) zirconia, silica, zircon, or molybdic oxide either individually or in combination.
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