三种耐火浇注料抗K_(2)CO_(3)侵蚀性能对比  

Corrosion resistance of three kinds of refractory castables against K_(2)CO_(3)

作　　者：许应顺 张三华[1] 秦红彬 曹迎楠[1] 冯海霞[1] 王欢 Xu Yingshun;Zhang Sanhua;Qin Hongbin;Cao Yingnan;Feng Haixia;Wang Huan(State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China)

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》2021年第2期135-139,共5页Refractories

摘　　要：为探索垃圾焚烧炉用耐火材料被碱金属化合物侵蚀的机制,采用碱蒸气法对莫来石、刚玉和铬刚玉三种浇注料在800、1000、1200和1350℃保温30 h进行侵蚀试验,对比不同温度下三种浇注料侵蚀前后的物理性能和抗碱侵蚀性能。结果表明:1)在800℃时,莫来石、刚玉和铬刚玉浇注料经K 2CO 3侵蚀后的强度都高于侵蚀前的强度,且刚玉浇注料侵蚀后的强度最高,莫来石和刚玉浇注料的抗碱侵蚀性比铬刚玉浇注料的好。2,当温度为1000、1200和1350℃时,莫来石、刚玉和铬刚玉浇注料经K 2CO 3侵蚀后耐压强度均下降,但铬刚玉浇注料抗碱侵蚀前后的耐压强度均高于莫来石和刚玉浇注料的,铬刚玉浇注料的抗碱侵蚀性能更好。In order to explore the corrosion mechanism of alkali metal compounds to refractories used in waste incinerators,the corrosion tests of mullite,corundum and chromium corundum castables were carried out at 800,1000,1200 and 1350℃for 30 h by alkali steam method.The physical properties and alkali resistance of three castables before and after corrosion at different temperatures were compared.The results show that:(1,at 800℃,the strength of mullite,corundum and chromium corundum castables after alkali corrosion is higher than before,while the strength of corundum castables after corrosion is the highest,the alkali corrosion resistance of mullite and corundum castables is better than that of chromium corundum castables;(2,when the temperature is 1000,1200 and 1350℃,the compressive strength of mullite,corundum and chromium corundum castables decreases after K 2CO 3 corrosion;the compressive strength of chromium corundum castables before and after alkali corrosion is higher than that of mullite and corundum castables;and the alkali corrosion resistance of chromium corundum castables is the best.

关 键 词：浇注料 莫来石 白刚玉 铬刚玉 抗碱侵蚀性 物理性能 

分 类 号：TQ175[化学工程—硅酸盐工业]