钢液对连铸用含碳耐火材料的侵蚀作用研究  

Study on erosion effect of molten steel on carbon-containing refractories for continuous casting

作　　者：李红霞[1] 杨彬[1] 刘国齐[1] 程贺朋[1] 

机构地区：[1]中钢集团洛阳耐火材料研究院,洛阳471039

出　　处：《耐火材料》2007年第3期161-167,共7页Refractories

摘　　要：采用中频炉的实验室模拟试验(试验条件:钢液温度1600℃,浸入时间30min,气氛分别为空气和真空)和通过对用后耐火材料的显微结构分析,研究了钢液对3种连铸用含碳耐火材料(Al2O3-C、MgO-C和ZrO2-C)的侵蚀作用。结果表明,脱碳层的形成及钢液中夹杂物与脱碳层中耐火氧化物的反应是材料蚀损的主要原因。因此,在含碳耐火材料接触钢液的表面形成致密耐火层,能有效抑制钢液对连铸用含碳耐火材料的侵蚀。The erosion of carbon-containing refractories for continuous casting （ MgO - C, Al2O3 - C, ZrO2 - C） by molten steel were investigated by means of simulative corrosion test soaking in molten steel at 1 600 ℃ for 30 min in air or vacuum in medium frequency furnace. The results show that the decarbonization and reac- tions between molten steel and decarbonization layer are main erosion process of carbon containing refractories by molten steel. The reactions between molten steel and oxide in the refractories determine the thickness of decarbonization layer. A dense layer formation on the working surface contacting with molten steel during casting will suppress decarbonization and erosion process.

关 键 词：连铸 含碳耐火材料 脱碳 侵蚀 

分 类 号：TQ175.714[化学工程—硅酸盐工业]