Coated expendable refractory lining having improved resistance to erosive and corrosive materials
AssigneeMinerals Technologies Inc.
InventorsJulie Annette Dody, Charles R. Rumpeltin, Jr.
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Abstract
The disclosed invention provides a method of forming refractory linings for maintaining refractory linings against attack by corrosive materials such as those present in steel manufacture. The method entails spraying an aqueous mixture of a refractory composition that includes at least one refractory material onto the working surface of a refractory lining. Spraying is performed to provide one or more layers of the refractory composition on the refractory lining after each exposure of the lining to corrosive materials such as those incurred in steel manufacture.
Claims21
A coated expendable refractory lining having improved resistance to erosive and corrosive materials comprising a refractory lining and a layer of refractory material thereon, wherein said layer is formed from a blend comprising refractory material, high temperature binder, and plasticizer.
A coated expendable refractory lining having improved resistance to erosive and corrosive materials comprising a refractory lining and a layer of refractory material thereon, wherein said layer is formed from a blend comprising about 80% to 95% of a refractory material of magnesia, olivine, fireclay, dolomite, calcia, zirconia, alumina, silica, chromite, graphite, zircon, or mixtures thereof;
- about 0.1 to 10% of a high temperature binder having an effective temperature range up to at least 3000.degree. F., said high temperature binder comprising a phosphate, silicate, or sulfate;
- and about 0.1 to 5% of a plasticizer of clay, starch, or aluminum hydroxide.
A coated expendable refractory lining having improved resistance to erosive and corrosive materials comprising a refractory lining and a layer of refractory material thereon, wherein said layer is formed from a blend consisting essentially of about 80% to 95% of a refractory material of magnesia, olivine, fireclay, dolomite, calcia, zirconia, alumina, silica, chromite, graphite, zircon, or mixtures thereof;
- about 0.1 to 10% of a high temperature binder having an effective temperature range up to at least 3000.degree. F., said high temperature binder comprising a phosphate, silicate, or sulfate;
- and about 0.1 to 5% of a plasticizer of clay, starch, or aluminum hydroxide.
Dependencies are inferred from the claim text.