以方镁石、镁铝尖晶石、铬矿为主晶相的中性耐火制品。产品具有较高的高温机械强度、韧性和抗热震 稳定性及耐磨、耐冲刷等特点。产品广泛应用于平炉、电炉、高温隧道窑炉顶、矿热炉炉衬、玻璃熔窑碹拱 ，水泥回转窑高温区等。 　　 It`s made from periclasite,magnesite aluminium spinel,chrome ore as raw material.It`s char acteristic of high temperature machinery and strength,toughn-ess,milling resistance , watering resistance , good t-hermal shock resistance.Mainly used in open hearth,EAF ,high temperature t unnel kiln , smelting furnace,glass kiln,cement rotary kiln etc.