REFRACTORY BRICKS AND METHODS OF MAKING THE SAME
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United States of America Patent
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Issued Date -
Jul 28, 2016
app pub date -
Jan 22, 2016
filing date -
Jan 23, 2015
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Abstract
A refractory brick including a refractory composition comprising, by weight based on total weight of the composition: 5% to 50% olivine; 3.5% to 35% magnesia-alumina spinel; optionally, 1% to 10% alumina; and the balance essentially magnesite and impurities. In certain non-limiting embodiments, the refractory brick can have a thermal conductivity of 2.6 W/(m·K) or less when tested at 1400° C., while maintaining a coefficient of thermal expansion of 12.6×10−6/° C. or less.
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