High zirconia fused refractory product
AssigneeAsahi Glass Company, Limited
InventorsMasataro Okumiya, Kiyoharu Kuwabara
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Abstract
A high zirconia fused refractory product consists essentially of the following constituents analytically, on a weight basis: 85% to 97% of ZrO.sub.2 ; 0.1% to 3% of P.sub.2 O.sub.5 ; 2% to 10% of SiO.sub.2 ; up to 3% of Al.sub.2 O.sub.3 without a substantial amount of a rare earth oxide.
Claims7
A high zirconia fused refractory product consisting essentially of the following constituents analytically, on a weight basis:
- 85% to 97% of ZrO.sub.2 ;
- 0.1% to 3% of P.sub.2 O.sub.5 ;
- 2% to 10% of SiO.sub.2 ;
- up to 3% of Al.sub.2 O.sub.3 ;
- and
- being full of rare earth oxide.
A high zirconia fused refractory product consisting essentially of the following constituents analytically, on a weight basis:
- 85% to 97% of ZrO.sub.2 ;
- 0.1% to 3% of P.sub.2 O.sub.5 ;
- 2% to 10% of SiO.sub.2 ;
- up to 3% of Al.sub.2 O.sub.3 ;
- less than 1% of alkali metal oxide and being free of rare earth oxide.
A high zirconia fused refractory product consisting essentially of the following constituents analytically, on a weight basis:
- 90% to 96% of ZrO.sub.2 ;
- 0.1% to 3% of P.sub.2 O.sub.5 ;
- 3% to 6% of SiO.sub.2 ;
- less than 1% of Al.sub.2 O.sub.3 ;
- less than 0.6% of alkali metal oxide;
- less than 0.5% of alkaline earth metal oxide +Fe.sub.2 O.sub.3 +TiO.sub.2 ;
- and
- being free of rare earth oxide.
Dependencies are inferred from the claim text.