The crystalline phases of fused zirconia-corundum bricks consist of zircon (ZrO₂), corundum (Al₂O₃), mullite (3Al₂O₃•2SiO₂), and zircon (ZiSiO₄). The main crystalline phases are ZrO₂ (32%–33%), Al₂O₃ (45%–48%), mullite (3Al₂O₃•2%) (0%–2%),…