铝酸钙水泥种类对Al_(2)O_(3)-SiC-C质铁沟浇注料性能的影响  

Effect of different calcium aluminate cements on properties of Al_(2)O_(3)-SiC-C iron trough castables

作　　者：牛春林 任林[1] 张晓波[1] Niu Chunlin;Ren Lin;Zhang Xiaobo(Beijing Lier High-temperature Materials Co.,Ltd.,Beijing 102211,China)

机构地区：[1]北京利尔高温材料股份有限公司,北京102211

出　　处：《耐火材料》2021年第6期483-486,共4页Refractories

摘　　要：以棕刚玉、碳化硅、α-Al_(2)O_(3)微粉、SiO_(2)微粉及不同种类的铝酸钙水泥等为原料,制备了Al_(2)O_(3)-SiC-C质铁沟浇注料,研究了铝酸钙水泥种类(水泥CA50、CA70、Vical71、Vical21)对浇注料性能的影响。结果表明:引入CA50、CA70、Vical71、Vical21四种铝酸钙水泥的试样,随所含水泥中Al_(2)O_(3)和SiO_(2)总含量的增加,CaO及其他杂质含量的减少,110℃干燥后的显气孔率降低,1450℃热处理后的显气孔率先减小后增大,两条件下体积密度的变化幅度均较小;干燥后的常温强度先减小后增大,热处理后的常温强度、高温抗折强度、抗渣性能均逐渐增大。综合实验室和工业试验结果考虑,选用水泥Vical21,使用效果最好。Al_(2)O_(3)-SiC-C iron trough castables were prepared using brown corundum,silicon carbide,α-Al_(2)O_(3) micropowder,SiO_(2) micropowder,and different calcium aluminate cements as raw materials to study the influence of cements(CA50,CA70,Vical71,and Vical21)on their properties.The results show that with the Al_(2)O_(3) and SiO_(2) content increasing,CaO and other impurities content decrease in the cements,for the specimens,the apparent porosity after drying at 110℃decreases gradually,and the apparent porosity after heat treatment at 1450℃decreases at first and then increases,the bulk density in the two conditions both changes slightly;the cold strengths after drying decrease firstly and then increase,the cold strength after heat treatment,the hot modulus of rupture,and the slag corrosion resistance enhance gradually.Considering both the laboratory and the industrial results,Vical21 cement is the best choice.

关 键 词：Al_(2)O_(3)-SiC-C质铁沟浇注料 铝酸钙水泥 高温抗折强度 抗渣性能 

分 类 号：TQ175[化学工程—硅酸盐工业]