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US 8,497,222 B2Granted
Alumina-magnesia material for a gasifier
AssigneeSaint-Gobain Centre De Recherches Et D'Etudes Europeen
InventorsEric Jorge, Sebastien Bourdonnais
Life of this patent
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Abstract
A molten and cast refractory material having a chemical composition, in weight percent on the basis of oxides, of: —Al2O3: the remainder up to 100%; —MgO: 28% to 50%; —CuO: 0.05% to 1.0%; —B2O3: ≦1.0%; —SiO2: <0.5%; —Na2O+K2O: <0.3%; —CaO: <1.0%; —Fe2O3+TiO2: <0.55%; —and other oxide species: <0.5%.
Claims15
A fused-cast refractory product having a chemical composition comprising in percentages by weight on the basis of the oxides:
- Al2O3:
- balance to 100%;
- MgO:
- 28% to 50%;
- CuO:
- 0.05% to 1.0%;
- B2O3:
- ≦
- 1.0%;
- SiO2:
- ≦
- 0.5%;
- Na2O + K2O:
- ≦
- 0.3%;
- CaO:
- ≦
- 1.0%;
- Fe2O3 + TiO2:
- <
- 0.55%;
- other oxide species
- <
- 0.5%.
21 more elements
Dependencies are inferred from the claim text.