摘要
熔铸Al_(2)O_(3)-ZrO_(2)-SiO_(2)(AZS)耐火材料是玻璃熔窑的关键筑炉材料。本文分别以煅烧氧化铝粉和普通工业氧化铝粉为原料制备熔铸AZS耐火材料,并采用岩相分析、X射线衍射分析和能谱分析等测试方法,对比分析了两种熔铸AZS耐火材料的结构和性能。结果表明:普通工业氧化铝粉制备的熔铸AZS耐火材料中存在未转化完全的γ-Al_(2)O_(3),导致获得的Al_(2)O_(3)-ZrO_(2)共晶体分布不均匀。煅烧氧化铝粉制备的熔铸AZS耐火材料中,氧化铝物相为α-Al_(2)O_(3),其晶体结构中斜锆石少,Al_(2)O_(3)-ZrO_(2)共晶体多,玻璃相分布均匀。晶体结构的分布影响着玻璃相渗出量和抗玻璃液侵蚀性能。煅烧氧化铝粉制备的熔铸AZS耐火材料玻璃相渗出量比普通工业氧化铝粉制备的熔铸AZS耐火材料玻璃相渗出量降低了0.57个百分点,抗玻璃液侵蚀性能提高了0.15 mm/24 h。
Fused cast Al_(2)O_(3)-ZrO_(2)-SiO_(2)(AZS)refractory is the key building material of glass furnace.Calcined aluminum oxide powder and ordinary industrial aluminum oxide powder were used as raw materials to prepare fused cast AZS refractories,respectively.The structure and properties of the two fused cast AZS refractories were compared and analyzed by lithofacies analysis,X-ray diffraction analysis,and energy dispersive spectroscopy analysis,etc.The results indicate that fused cast AZS refractory material prepared by ordinary industrial aluminum oxide powder has the incomplete conversionγ-Al_(2)O_(3),which leads to uneven distribution of Al_(2)O_(3)-ZrO_(2)eutectic.The alumina phase in the fused cast AZS refractory prepared by calcined alumina oxide powder isα-Al_(2)O_(3).The fused cast AZS refractory prepared by calcined aluminum oxide has less baddeleyite,more Al_(2)O_(3)-ZrO_(2)eutectic and more uniform distribution of glass phase.The distribution of crystal structure affects amount of glass phase exudation and corrosion resistance to molten glass.The glass phase exudation of the fused cast AZS refractory prepared by calcined aluminum oxide powder is 0.57 percentage points lower than that of fused cast AZS refractory prepared by ordinary industrial aluminum oxide powder.The corrosion resistance to molten glass of fused cast AZS refractory prepared by calcined aluminum oxide power is 0.15 mm/24 h higher than that of fused cast AZS refractory prepared by ordinary industrial aluminum oxide power.
作者
邓丽娜
易帅
王明刚
李伟豪
司国栋
姜文博
王长安
谢金莉
DENG Lina;YI Shuai;WANG Minggang;LI Weihao;SI Guodong;JIANG Wenbo;WANG Chang’an;XIE Jinli(China Testing&Certification International Group Co.,Ltd.,Beijing 100024,China;Shandong Refractories Co.,Ltd.,Lunai Company,Zibo 255200,China)
出处
《硅酸盐通报》
CAS
北大核心
2023年第8期2952-2959,共8页
Bulletin of the Chinese Ceramic Society
基金
北京市科技服务业促进专项(YD-809)。
关键词
煅烧氧化铝粉
普通工业氧化铝粉
熔铸AZS耐火材料
玻璃相渗出量
抗玻璃液侵蚀
calcined aluminum oxide powder
ordinary industrial aluminum oxide powder
fused cast AZS refractory
glass phase exudation
corrosion resistance to molten glass
