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世界第二大产钢国日本,最近在开发钢铁工业用高质量的耐火材料。由于全面采用铁水预处理,使铁水沟和鱼雷式铁水包的耐火材料使用寿命降低。因此必须提高上述部位所用耐火材料的质量,现所用耐火材料多为碳化硅和铝尖晶质而不用中级氧化铝耐火材料,二次精炼技术的发展使钢包和脱气装置需采用硅和氧化铁含量低的铬结合的镁铬耐火砖,因此,将以高氧化铝和铝尖晶石等复合衬取代传统的叶腊石或锆英石质钢包衬。洁净优质钢的生产趋势表明,锆英石、莫来石和粘土质耐火材料等硅质耐火材料,
Japan, the world’s second-largest steel producer, recently developed high-quality refractory materials for the steel industry. As the full use of hot metal pretreatment, the hot metal ladle and torpedo ladle refractory life reduced. Therefore, it is necessary to improve the quality of the refractory materials used in the above parts. At present, most refractory materials used are silicon carbide and aluminum spinel without intermediate alumina refractories. The development of the secondary refining technology requires the use of silicon and iron oxide Low content of chromium-bonded magnesia-chrome refractory bricks, therefore, will be high-alumina and aluminum spinel and other composite lining to replace the traditional pyrophyllite or zircon quartz lining. The production trend of clean high-quality steel shows that siliceous refractory materials such as zircon, mullite and clay-based refractories,