FUSED CAST HIGH-ZIRCONIUM REFRACTORY MATERIAL Russian patent published in 1995 - IPC

FIELD: refractory industry. SUBSTANCE: fused cast high-zirconium refractory material contains, mass percent: SiO₂ 1.0 to 5.5; Al₂O₃ 0.3 to 1.2; SnO₂ 0.1 to 0.5; ZnO 0.1 to 0.4; P₂O₅ 0.1 to 0.3; at least one alkaline oxide from group Na₂O, K₂O, Zi₂O 0.1 to 0.3; at least one oxide from group MgO, CaO 0.4 to 7.0; at least one halogen from group F, Cl 0.1 to 0.3; Z₂O₂ the rest. EFFECT: enhanced refractories of refractory vitreous phase, enhanced degree of material penetration at a high corrosion resistance of refractory material to optical glass melts. 2 tbl