Chrome-free brick
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United States of America Patent
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Sep 24, 1996
Grant Date -
N/A
app pub date -
Dec 30, 1994
filing date -
Dec 9, 1993
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Chrome-free bricks which exhibit excellent resistance to corrosion, penetration, and thermal spalling. The bricks are mainly made from a magnesia material and/or a magnesia-alumina spinel material and comprise 1 to 10 wt % titania and 1 to 15 wt % alumina. They may contain 0.5 to 10 wt % iron oxide. Further, they may contain at least one material of the group consisting of 1 to 10 wt % metal powder, 1 to 20 wt % carbon and 1 to 20 wt % one of oxide materials except for iron oxide.
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