Chromia-magnesia refractory body
AssigneeNorton Company
InventorsAnthony K. Butkus, Scott D. Martin
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Abstract
An improved chromia-magnesia refractory product of co-fused chromia-magnesia grains bonded by an in situ formed chromia bond is prepared by substantially avoiding the presence of grains that will pass through a screen with openings of 150 microns. The resultant product exhibits improved resistance to silicieous materials such as are present in coal slags.
Claims20
In a refractory product consisting essentially of grains of co-fused chromia and magnesia bonded with an in situ formed microcrystalline bond of chromia, the improvement consisting essentially of the substantial absence of said grains which can pass though a sieve opening of 150 microns.
A raw batch refractory mix consisting essentially of grains of co-fused chromia and magnesia and a finely particulate source of chromia, in the absence of more than about 10 weight % of co-fused grains that pass through a sieve opening of 150 microns.
Dependencies are inferred from the claim text.