Back to results
US 10,295,261 B2Granted
Refractory lining repair material
AssigneeVesuvius U S A Corporation
InventorRyan Hershey
Life of this patent
Estimating the term…
Abstract
A formulation containing polymer, resin and cement combined with aggregate can be used as a gunnable mix that is applied to a surface by being conveyed pneumatically in dry form to a nozzle, where water is added. Polymer in the gunnable mix enables it to adhere and bond to a surface, such as carbon brick, of a lining of a vessel used for the containment of molten metals. The formulation may be used, for example, to repair and protect blast furnace hearth linings.
Claims17
A dry refractory composition, comprising:
- 5 wt % to 97 wt % of an aggregate comprising a material selected from the group consisting of calcined flint clay, calcined kaolin, calcined bauxitic kaolin, andalusite, tabular alumina, silicon carbide, silicon nitride, calcined alumina, reactive alumina, hydrated alumina, silica fume, white fused alumina, brown fused alumina, calcined bauxite, silica sand, silica, clay, kyanite, spinel, fused silica, zircon, zirconia, and combinations of each thereof;
- 0.01 wt % to 32 wt % of a water-soluble polymer selected from the group consisting of cellulose, dextran, poly(N-vinylpyridine), poly(acrylamide/acrylic acid), poly(acrylic acid), poly(ethylene glycol), poly(ethylene oxide), poly(N-vinylpyrrolidone), poly(vinyl alcohol), polyacrylamide, polyethyleneimine and combinations of each thereof;
- 0.01 wt % to 32 wt % of a resin selected from the group consisting of phenolic novolac resin, phenolic resole resin, epoxy resin, polyester resin, polyurethane resin, acrylic resin and combinations of each thereof;
- and
- 0.01 wt % to 15 wt % of a cement comprising a material selected from the group consisting of silicon dioxide, aluminum oxide, iron (III) oxide, calcium oxide and combinations of each thereof.
2 more elements
Dependencies are inferred from the claim text.