Products with good thermal stability at high temperatures，liquid glass erosion scour resistance， the glass liquid pollution is small. Mainly used for glass kiln of the upper structure,material,cover plate,and molding parts.The steel industry hot-blast stove, the blast furnace,etc.

项目 Item	75莫来石砖 75 Mullite Brick	70莫来石砖 70 Mullite Brick	65硅线石砖 65 Sillimanite Brick	60硅线石砖 60 Sillimanite Brick	65红柱石砖 65 Andalusite brick	60红柱石砖 60 Andalusite brick
Al2O3（%）	≥75	≥70	≥65	≥60	≥65	≥60
SiO2 (%)	≤23	≤28	≤33	≤38	≤33	≤38
Fe2O3 (%)	≤0.3	≤0.3	≤0.5	≤0.6	≤0.9	≤0.8
体积密度(g/cm3) Bulk Density	≥2.7	≥2.65	≥2.45	≥2.3	≥2.45	≥2.3
显气孔率(%) Apparent Porosity	≤17	≤17	≤22	≤23	≤22	≤23
常温耐压强度(Mpa) Cold Crushing Strength	≥140	≥120	≥80	≥80	≥80	≥80
荷重软化开始温度(℃) (0.2Mpa,0.6%) Refractoriness under Load	≥1700	≥1680	≥1650	≥1600	≥1650	≥1600
重烧线变化率 (%) Reheating Linear Change Rate	0.2	0.2	0.2	0.2	0.2	0.2
典型应用 Typical Application	制品具有良好的高温热稳定性，抗玻璃液侵蚀冲刷能力，对玻璃液污染小，适用于玻璃窑的上部结构，料道，盖板和成型部件。同时应用于钢铁行业热风炉，高炉等部位。 Products with good thermal stability at high temperatures，liquid glass erosion scour resistance， the glass liquid pollution is small. Mainly used for glass kiln of the upper structure,material,cover plate,and molding parts.The steel industry hot-blast stove, the blast furnace,etc.