Gabatarwa ga rarrabawa high alumina refractory tubalin bisa ga abun ciki na Al2O3

High alumina refractory tubalin sun kasu kashi uku maki bisa ga abun ciki na Al2O3: Class I (Al2O3> 75%); Class II (Al2O3 shine 60% ~ 75%); Class III (Al2O3 shine 48% ~ 60%). Dangane da abun da ke ciki na ma’adinai, ana iya raba shi zuwa: ƙananan mullite (ciki har da sillimanite) da mullite (Al2O3 shine 48% ~ 71.8%), mullite-corundum da corundum-mullite (Al2O3 shine 71.8% ~ 95%), corundum (Al2O3). shine 95% ~ 100%) da sauran tubalin da ba a so.