两种典型结合方式对不定形耐火材料耐酸腐蚀性的影响  

Effects of two typical bonding methods on acid corrosion resistance of unshaped refractories

作　　者：赵燕 李金雨 李佳东 占华生 栾舰[2] Zhao Yan;Li Jinyu;Li Jiadong;Zhan Huasheng;Luan Jian(Bejing Jinyu Tongda Refractory Technology Co.,Ltd.,Beijing 100085,China;Liaoning University of Science&Technology,Anshan 114051,China)

机构地区：[1]北京金隅通达耐火技术有限公司,北京100085 [2]辽宁科技大学,鞍山114051

出　　处：《耐火与石灰》2022年第4期17-20,29,共5页Refractories & Lime

基　　金：国家重点研发计划“固废资源化”项目“大宗低阶固废规模化制备高值矿物材料关键技术”课题三“陶瓷固废微结构屏蔽调控制备耐高温材料研究及示范”(2018YFC1901503)。

摘　　要：以铝酸钙水泥(水硬性)和磷酸二氢铝(热硬性)结合的不定形耐火材料,在不同温度下热处理后放入盐酸和硫酸中浸泡7天和30天,观察其耐酸腐蚀性情况。结果表明:结合方式不同、热处理温度不同、酸腐蚀溶液不同、浸泡时间不同,不定形耐火材料所显示的耐酸腐蚀性能均不同。而与硫酸相比,盐酸对不定形耐火材料的腐蚀性更强。废酸高温浓缩处理用装置内衬需根据酸的种类,选择不同结合剂结合的不定形耐火材料和烘炉温度,以提高耐火材料的耐酸腐蚀性,保证废酸处理装置的安全运行。The unshaped refractories,which were made of calcium aluminate cement(hydraulic cement)and aluminum dihydrogen phosphate(thermal hardening),were soaked in hydrochloric acid and sulfuric acid for 7 days and 30 days after heat treatment at different temperatures,and their acid resistance and corrosion resistance were observed.The results show that the unshaped refractories have different acid corrosion resistance with different bonding methods,different heat treatment temperatures,different acid corrosion solutions and different soaking time.Compared with sulfuric acid,hydrochloric acid is more corrosive to unshaped refractories.According to the type of acid,the unshaped refractories combined with different binders and the baking temperatures should be selected for the lining of the device for high-temperature concentration of waste acid,so as to improve the acid corrosion resistance of the refractories and ensure the safe operation of the waste acid treatment device.

关 键 词：废酸处理装置 磷酸二氢铝 铝酸钙水泥 腐蚀性 热处理温度 

分 类 号：TQ175.73[化学工程—硅酸盐工业]