CA_(6)、MA和β-Al_(2)O_(3)质浇注料抗K_(2)CO_(3)侵蚀研究  

K_(2)CO_(3) corrosion resistance of CA_(6),MA or β-Al_(2)O_(3) castables

作　　者：许远超[1] 张三华[1] 秦红彬 许应顺 黄志林[1] Xu Yuanchao;Zhang Sanhua;Qin Hongbin;Xu Yingshun;Huang Zhilin(State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China;不详)

机构地区：[1]中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室,河南洛阳471039

出　　处：《耐火材料》2022年第5期412-415,共4页Refractories

摘　　要：采用碱蒸气法,对不同温度(800、1000、1200和1350℃)热处理后的3种材质(六铝酸钙、镁铝尖晶石和β-Al_(2)O_(3))的浇注料试样,在对应温度(800、1000、1200和1350℃)下进行抗K_(2)CO_(3)侵蚀试验,然后检测其抗K_(2)CO_(3)侵蚀试验后的显气孔率变化率、体积密度变化率和常温耐压强度变化率,并分析其抗K_(2)CO_(3)试验后的物相组成。结果表明:1800℃时,3种浇注料的抗K_(2)CO_(3)侵蚀性能都很好。21200℃时,六铝酸钙浇注料与K_(2)CO_(3)反应生成大量β-Al_(2)O_(3),抗K_(2)CO_(3)侵蚀性能较差;尖晶石浇注料与K_(2)CO_(3)反应生成的β-Al_(2)O_(3)较少,抗K_(2)CO_(3)侵蚀性能较好;β-Al_(2)O_(3)浇注料与K_(2)CO_(3)反应最弱,抗K_(2)CO_(3)侵蚀性能最好。Three castables(CA_(6),MA and β-Al_(2)O_(3))were heat treated at different temperatures(800,1000,1200 and 1350℃)and tested in terms of the K_(2)CO_(3) corrosion test at the corresponding temperatures(800,1000,1200 and 1350℃),and then the change rates of the apparent porosity,the bulk density,and the CCS of the samples after K_(2)CO_(3) corrosion resistance test were determined,and the phase composition was analyzed.The results show that:(1)all the three castables present good alkali corrosion resistance at 800℃;(2)at 1200℃,CA_(6) castable reacts with K_(2)CO_(3) to produce a large amount of β-Al_(2)O_(3),which has poor corrosion resistance to K_(2)CO_(3);spinel castable reacts with K_(2)CO_(3) to produce less β-Al_(2)O_(3) and has good corrosion resistance to K_(2)CO_(3);β-Al_(2)O_(3) castable has the weakest reaction with K_(2)CO_(3) and the best K_(2)CO_(3) corrosion resistance.

关 键 词：CA_(6) MA β-Al_(2)O_(3) K_(2)CO_(3) 抗碱侵蚀 

分 类 号：TQ175[化学工程—硅酸盐工业]