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八十年代以前,国内钢包衬砖一般使用粘土质或高铝质耐火材料砌筑。粘土质材料抗腐蚀性差,高铝质材料抗渗透性弱,致使包伶低。八十年代以来,成功地研制、开发并推广了铝镁质材料。它因相组成中存在一种高熔点、高强度、高化学稳定性的镁铝尖晶石矿物和一定数量的高温粘滞相,保证了它在钢包使用时优良的抗腐蚀性和抗渗性,从而显著地提高了包伶。如在天钢二炼钢厂等钢水达1700℃以上的钢包,原包伶为8—12次,采用铝镁质后可达20—22次。但
Before the 1980s, domestic ladle lining brick generally use clay or high aluminum refractory masonry. Anti-corrosive clay material is poor, high permeability of aluminum material is weak, resulting in package Ling low. Since the eighties, successfully developed, developed and promoted the aluminum-magnesium material. Because of its phase composition, there is a high melting point, high strength and high chemical stability of magnesium aluminum spinel minerals and a certain number of high-temperature viscous phase, which ensures that it is used in the ladle, excellent corrosion resistance and impermeability , Thus significantly improving the package Ling. Such as steel in the second day of the steel mill and other steel up to 1700 ℃ above the ladle, the original package Ling 8-12 times, after the use of aluminum magnesium up to 20-22 times. but