CAJ | 학술논문

为了提高水泥分解炉三次风闸板用 Al2 O3－SiC 质低水泥浇注料的性能特别是抗热震性能，研究了不同热处理温度（400、600、800、1000和1200℃）、升温速率（3、4、5、6和7℃·min －1）以及保温时间（2、3、4、5和6 h）对 Al2 O3－SiC 质低水泥浇注料性能的影响。结果表明：热处理温度升高，试样的显气孔率先增加后减小，强度增加；升温速率增加，试样中莫来石和钙长石的生成量减少，液相量增加，显气孔率基本呈降低趋势，综合作用使试样的抗热震性能在升温速率大于4℃·min －1时逐渐降低；延长保温时间有利于试样增加内部莫来石和钙长石的生成量，提高试样的抗热震性能。
위료제고수니분해로삼차풍갑판용 Al2 O3－SiC 질저수니요주료적성능특별시항열진성능，연구료불동열처리온도（400、600、800、1000화1200℃）、승온속솔（3、4、5、6화7℃·min －1）이급보온시간（2、3、4、5화6 h）대 Al2 O3－SiC 질저수니요주료성능적영향。결과표명：열처리온도승고，시양적현기공솔선증가후감소，강도증가；승온속솔증가，시양중막래석화개장석적생성량감소，액상량증가，현기공솔기본정강저추세，종합작용사시양적항열진성능재승온속솔대우4℃·min －1시축점강저；연장보온시간유리우시양증가내부막래석화개장석적생성량，제고시양적항열진성능。
Effects of hot treatment temperatures (400,600,800,1 000 and 1 200 ℃),heating rates (3,4,5,6 and 7 ℃· min -1 )and insulating times (2,3,4,5 and 6 h )on performance of Al 2 O3 -SiC low cement castables were researched in order to enhance the performance of the castables for tertiary air damper of cement decomposition furnace,especially the thermal shock resistance.The results show that with the hot treatment temperature rising,the apparent porosity of the specimens firstly increases and then decreases, and the strength increases;with the heating rate increasing,the formation of mullite and anorthite decrea-ses,the liquid phase increases,and the apparent porosity decreases in substance,the thermal shock re-sistance decreases gradually when the heating rate is higher than 4 ℃·min -1;prolonging the insulating time is beneficial to the formation of mullite and anorthite and the thermal shock resistance.