... crystalline phase---α-Al2O3Refractory gradeGrainmm0-50,0-1, 1-3, 3-5,5-8Finesmesh-200, 325Grit(F grade and P grade)FEPA16, 24 ... crystalline phase---α-Al2O3Refractory gradeGrainmm0-50,0-1, 1-3, 3-5,5-8Finesmesh-200, 325Grit(F grade and P grade)FEPA16, 24 ...