| 摘要 |
A refractory material for steel melts in a casting process comprises 20 to 32% Al2O3; 60 to 70% SiO2, and up to 10% of accompanying oxides. The accompanying oxides at least include CaO and MgO in an amount of at least 1.5%, but may also comprise other oxides such as TiO2, Fe2O3, and Na2O. |
