Refractory article and composition
OwnerLaura GRANA-SUAREZ, Michael KUBIAK +1inventors
InventorsLaura GRANA-SUAREZ, Michael KUBIAK, Frank VOSSEBELD
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Abstract
There is provided a refractory article for use in metal casting and a composition for manufacture thereof, comprising a particulate refractory material, an oxidisable fuel, an oxidant, a sensitizer; a binder, and from 0.5 to 5 wt % CaSO4.
Claims16
A composition for making a refractory article for use in a feeding system in metal casting, the composition comprising:
- a particulate refractory material;
- an oxidisable fuel;
- an oxidant;
- a sensitizer;
- and
- a binder,
- wherein the composition comprises from 0.5 to 5 wt % CaSO4.
The composition according to any one of the preceding claims, wherein the sensitizer comprises a fluorine compound which is insoluble in water.
The composition of any one of the preceding claims, wherein the oxidant comprises one or more oxidants selected from the group consisting of:
- iron oxide (Fe2O4 and/or Fe3O4), ferrosilite (FeSiO3), potassium nitrate (KNO3), manganese dioxide (MnO2), titanium dioxide (TiO2) and copper oxide (CuO).
The composition of any one of the preceding claims, wherein the composition comprises from 2 to 30 wt % oxidant.
The composition of any one of the preceding claims, wherein the oxidisable fuel comprises a metal, and optionally wherein the oxidisable fuel is aluminium, and optionally wherein the oxidisable fuel comprises aluminium foil and/or granular aluminium.
The composition of any one of the preceding claims, wherein the oxidisable fuel comprises silicon metal.
The composition of any one of the preceding claims, wherein the composition comprises:
- i) at least 10 wt % oxidisable fuel;
- and/or
- ii) no more than 30 wt % oxidisable fuel.
The composition of any one of the preceding claims, wherein the oxidisable fuel comprises an atomised powder, optionally wherein the atomised powder comprises atomised aluminium and/or atomised silicon metal.
The composition of any one of the preceding claims, further comprising a carrier fluid, optionally wherein the carrier fluid is water.
A refractory article for use in a feeding system in metal casting, wherein the article is formed from a composition according to any one of the preceding claims.
Dependencies are inferred from the claim text.