CAJ | 학술논문

分别采用静态坩埚抗渣法和回转抗渣法，对w（Cr2 O3）＝10％的A和B两种Al2 O3-Cr2 O3砖进行了抗渣性能对比。结果发现：两种砖的化学组成、显气孔率、体积密度和抗热震性相近，B砖强度优于A砖的。但由于与B砖相比，A砖内部气孔尺寸更小，所用电熔白刚玉骨料形貌平滑，较为致密，粒度呈连续式分布，且A砖中Al2 O3-Cr2 O3固溶体发育较小，相互交错，形成了孔隙较小的空间网状结构，这种显微结构显著降低了熔渣对耐火材料的渗透和破坏，使A砖的抗渣性优于B砖的。因此，制备微气孔化结构的制品是提高Al2 O3-Cr2 O3材料抗渣性能的有效途径。
분별채용정태감과항사법화회전항사법，대w（Cr2 O3）＝10％적A화B량충Al2 O3-Cr2 O3전진행료항사성능대비。결과발현：량충전적화학조성、현기공솔、체적밀도화항열진성상근，B전강도우우A전적。단유우여B전상비，A전내부기공척촌경소，소용전용백강옥골료형모평활，교위치밀，립도정련속식분포，차A전중Al2 O3-Cr2 O3고용체발육교소，상호교착，형성료공극교소적공간망상결구，저충현미결구현저강저료용사대내화재료적삼투화파배，사A전적항사성우우B전적。인차，제비미기공화결구적제품시제고Al2 O3-Cr2 O3재료항사성능적유효도경。
The slag resistance of two Al2 O3-Cr2 O3 bricks (with 10 mass%Cr2 O3 )A and B were researched using static crucible method and rotary slag method,respectively.The results show that,two Al2 O3-Cr2 O3 bricks have similar properties such as apparent porosity,bulk density,thermal shock resistance,and chem-ical compositions.Brick B has higher strength than brick A.Compared with brick B:brick A has smaller in-ner pores,because the white corundum aggregates in brick A are smoother and denser with continuous particle size distribution;Al2 O3-Cr2 O3 solid solution in brick A is smaller,crossing and forming net structure with small gaps,which reduces the penetration and wear of slag to refractories,meaning that brick A has better slag resistance than brick B.It’s obvious that optimizing microstructure is an effective way to im-prove the slag resistance of Al2 O3-Cr2 O3 materials.