AION加入物对碱性浇注料抗渣性的影响  

STUDY ON SLAG RESISTANCE OF AION BEARING BASIC CASTABLES

作　　者：苏新禄[1] 叶方保[2] 周宁生[1] 钟香崇[2] 张三华[1] 

机构地区：[1]洛阳耐火材料研究院,河南洛阳471039 [2]郑州大学高温材料研究所,郑州450052

出　　处：《硅酸盐学报》2003年第10期1011-1015,共5页Journal of The Chinese Ceramic Society

摘　　要：氧化镁-氧化铝碱性浇注料一个弱点为抗渗透性差,为改善钢包浇注料抗渣性能,提高其使用效果和寿命,运用静态坩埚法研究含AlON的MgO-Al_2O_3浇注料抗渣性。实验温度为1600℃,渣侵蚀时间为3h研究结果表明:在还原气氛下,AlON取代浇注料基质中Al_2O_3能显著提高试样的抗渣侵蚀和抗渗透性。在氧化气氛下,AlON对基质中Al_2O_3取代质量比不超过50％时,抗氧化剂的加入有助于保持AlON优良的抗渣性,产生这种结果的原因可归结于形成在高温下与氧化物渣难以润湿的含N尖晶石MgAlON,从而延缓渣对浇注料的侵蚀和渗透。The weakness of magnesia - alumina basie castable is the poor slag penetration resistance. In order to ameliorate slag resistance of magnesia - alumina castable, which used as in-lining material of steel ladle and improve its service life, slag resistance of AION-bearing magnesia - alumina castables were studied by static crucible method at 1600℃. The corrosion time of slag samples is 3 h. The results indicate; (1) Incorporation of AION into the matrix of the castable would lead to remarkable improvement of corrosion resistance and penetration resistance when testing in reducing atrnosphere. (2) In oxidizing atmos-phere, the improved slag resistant properties may be maintained by addition of antioxidants, provided that AION content in the matrix does not exceed 50% of total Al2O3. The above results may be attributed to the formation of MgAlON spinel which would be beneficial to retard slag corrosion and penetration due to its poor wettability

关 键 词：氧氮化铝 氧化镁—氧化铝系统 碱性浇注料 抗渣性 

分 类 号：TQ175.732[化学工程—硅酸盐工业]