Porous refractory cast material, its use and production
AssigneeVesuvius USA Corporation
InventorsDuane L. Debastiani, Xianxin Zhou
Life of this patent
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Abstract
A porous refractory cast material contains a closed refractory aggregate fraction having a minimum particle size and a maximum particle size; the ratio of maximum particle size to minimum particle size is 10:1 or less. This closed refractory aggregate fraction comprises all of the porous refractory cast material having a particle diameter greater than 0.1 mm. The porous refractory cast material also contains a binder phase containing refractory selected from calcium aluminate cement, alumina phosphate, hydratable alumina, colloidal silica and combinations thereof. Also disclosed is a metallurgical vessel with an interior lining incorporating the porous refractory cast material.
Claims15
A porous refractory cast material comprising:
- a closed refractory aggregate fraction having a minimum particle size and a maximum particle size, wherein the ratio of maximum particle size to minimum particle size is 10:1 or less;
- and
- a binder phase comprising refractory binder selected from the group consisting of calcium aluminate cement, alumina phosphate, alumina formed from hydratable alumina, silica formed from colloidal silica and combinations thereof;
- wherein the closed refractory aggregate fraction comprises 100 wt % of the material having a particle diameter greater than 0.1 mm and comprises a material selected from the group consisting of alumina, magnesite, zirconia, calcium oxide, silica, spinel, calcium aluminates, mullite, olivine, forsterite, zircon, calcium silicate, alumina zirconia silicate, and combinations of these materials.
Dependencies are inferred from the claim text.