以铬矿、镁铝尖晶石、方镁石为主晶相的化学结合碱性不定型耐火材料，产品具有较高的高温体积稳定 性、致密性和耐侵蚀性、抗剥落、耐冲刷、热震稳定性强等特点。产品广泛应用于筑造与熔融物直接接触的 冶炼炉炉衬、电弧炉炉顶、炉底、感应炉内衬及制造大型预制构件等。 　　 It`s made from chrome ore,magnesite aluminium spinel,periclasite ,which has advantages of bulk sta-bility under high temperature,firm and tight ,corrosion resistance,spalling resistan ce,strength thermal shock stability . Mainly used in melting furnace , EAF ,indu-ction furnac e, large precast.