Isingeniso sokuhlukaniswa kwe izitini eziphezulu ze-alumina refractory ngokuvumelana nokuqukethwe kwe-Al2O3

Izitini eziphakeme ze-alumina refractory zihlukaniswe ngamamaki amathathu ngokusho kokuqukethwe kwe-Al2O3: I-Class I (Al2O3>75%); I-Class II (i-Al2O3 ingu-60% ~ 75%); I-Class III (Al2O3 ingu-48%~60%). Ngokusho kokwakhiwa kwamaminerali, ingahlukaniswa: i-mullite ephansi (kuhlanganise ne-sillimanite) ne-mullite (Al2O3 i-48% ~ 71.8%), i-mullite-corundum ne-corundum-mullite (i-Al2O3 i-71.8% ~ 95%), i-corundum (Al2O3) ingu-95% ~ 100%) nezinye izitini eziphikisayo.