Fused cast alpha-beta alumina products is produced by melting and casting high
purity alumina in electric furnace at 2000C. alpha-beta corundum products
is formed when alpha alumina and beta alumina inter-combine during their
crystallization stage. A very compact structure is then formed; it has excellent endurance
to strong alkali. Under 1350C, the corrosion resistance to glass melt is the same as
AZS products. Because it does not contain impurities such as Fe2O3 and TiO2, when
comes into contact with liquefied glass, air bubbles are rarely found. Therefore, this
product has the special characteristic of minimizing contamination to glass liquor. So it
is very suitable for sidewalls, pond bottoms, fore-hearth feeders of slap-up glass kiln.
purity alumina in electric furnace at 2000C. alpha-beta corundum products
is formed when alpha alumina and beta alumina inter-combine during their
crystallization stage. A very compact structure is then formed; it has excellent endurance
to strong alkali. Under 1350C, the corrosion resistance to glass melt is the same as
AZS products. Because it does not contain impurities such as Fe2O3 and TiO2, when
comes into contact with liquefied glass, air bubbles are rarely found. Therefore, this
product has the special characteristic of minimizing contamination to glass liquor. So it
is very suitable for sidewalls, pond bottoms, fore-hearth feeders of slap-up glass kiln.
Typical chemical composition:
AL2O3 no less than 95%
SiO2 no more than 0.5%
Fe2O3+TiO2+CaO no more than 0.5%
Na2O remnant