Refractory cement
AssigneeNorton Company
InventorsCecil M. Jones, Malcolm E. Washburn, Louis J. Trostel, Jr.
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Abstract
A novel raw batch and improved fired refractory cement is described. A bulk refractory grain mass is initially bonded with a fired bond, which upon being fired includes Si.sub.3 N.sub.4 and/or Si.sub.2 ON.sub.2 reaction component that better protects the ultimate high temperature sintered cement product from erosion when the cement is used as a liner for furnace walls, troughs, and runners that contain a flow of molten iron or slag, as well as induction furnaces which process corrosive slag.
Claims17
A refractory cement adapted to be fired in situ, said cement containing a major proportion of refractory grain, wherein the improvement comprises:
- a bond for said grain comprising a mixture of fine silica, a source of iron oxide, silicon powder, and a source of calcium oxide.
A refractory cement fired in place as linings in furnaces, and the like comprising a major proportion of grains of alumina, silicon carbide, mullite and kyanite, and a minor proportion of a bond that is formed as the reaction product resulting from firing a mixture of bonding ingredients comprising fine silica, a source of iron oxide, silicon powder and a source of calcium oxide.
Dependencies are inferred from the claim text.