Item

Index

SiO 2 %

∽28

Al 2 O 3 % ≥

60

Fe 2 O 3 % ≤

1.0

R 2 O % ≤

1.0

Refractoriness ℃ ≥

1790

Refractoriness Under Load (KD ℃) ≥

1600

Linear Change After Reheating (1500℃x2h), %

0∽+0.3

Apparent Porosity % ， ≤

20

Bulk Density g/cm 3 ， ≥

2.5

Cold Crushing Strength MPa ≥

50

Thermal Shock Resistance

(1100℃ ， water) ， cycle ≥

12