Refractory material and product thereof containing low-silica electrofused magnesia clinker
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United States of America Patent
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Nov 29, 1994
Grant Date -
N/A
app pub date -
Apr 26, 1993
filing date -
Sep 18, 1991
priority date (Note) -
Expired
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Abstract
Disclosed herein are a refractory material of high-purity electrofused magnesia clinker having good resistance to corrosion by slag, especially the slag with a high iron content, at high temperatures under an oxidative environment, and a burned or unburned refractory brick made of such refractory material of high corrosion resistance, which is superior in corrosion resistance as well as spalling resistance. The refractory material comprises more than 10 wt. % of electrofused magnesia clinker containing 98.0 to 99.8 wt. % of MgO, less than 0.05 wt. % of SiO.sub.2, and 0.1 to 2.0 wt. % of CaO. It may be in the form of burned or unburned or prepared unshaped refractories.
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