Item

Index

AL 2 O 3 %

≥42

Fe 2 O 3 %

≤1.7

Refractoriness ℃

≥1730

Cold Crushing Strength MPa

≥42

Apparent Porosity %

≤20

Refractoriness Under Load 0.2MPa ℃

≥1400

Linear Change After Reheating ( 1400℃ × 2h) %

-0.2