02-02-2017 дата публикации
Номер: US20170030647A1
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. 1. A refractory composition , comprising:aggregate;polymer;resin; andcement.2. The refractory composition of claim 1 , wherein the aggregate comprises a material selected from the group consisting of calcined flint clay claim 1 , calcined kaolin claim 1 , calcined bauxitic kaolin claim 1 , andalusite claim 1 , tabular alumina claim 1 , silicon carbide claim 1 , silicon nitride claim 1 , calcined alumina claim 1 , reactive alumina claim 1 , hydrated alumina claim 1 , silica fume claim 1 , white fused alumina claim 1 , brown fused alumina claim 1 , calcined bauxite claim 1 , silica sand claim 1 , silica claim 1 , clay claim 1 , kyanite claim 1 , spinel claim 1 , fused silica claim 1 , zircon claim 1 , zirconia claim 1 , and combinations thereof.3. The refractory composition of claim 1 , wherein the polymer is selected from the group consisting of cellulose claim 1 , dextran claim 1 , poly(N-vinylpyridine) claim 1 , poly(acrylamide/acrylic acid) claim 1 , poly(acrylic acid) claim 1 , poly(ethylene glycol) claim 1 , poly(ethylene oxide) claim 1 , poly(N-vinylpyrrolidone) claim 1 , poly(vinyl alcohol) claim 1 , polyacrylamide claim 1 , polyethylenimine and combinations thereof.4. The refractory composition of claim 1 , wherein the resin is selected from the group consisting of phenolic novolac resin claim 1 , phenolic resole resin claim 1 , epoxy resin claim 1 , polyester resin claim 1 , epoxy-polyester resin claim 1 , polyurethane resin claim 1 , polyester claim 1 , acrylic and combinations thereof.5. The ...
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