Item | Physical and Chemical Specifications | ||
BN-40 | BN-60 | ||
Al2O3 % | ≥43 | ≥61 | |
Fe2O3 % | ≤1.3 | ≤1.3 | |
R2O % | ≤1.0 | ≤1.0 | |
Refractoriness℃ | ≥1750 | ≥1750 | |
Refractoriness Under Load KD℃ | ≥1400 | ≥1550 | |
Variation of Re-Burning Line 1400℃×2h | +0.1/-0.4 | +0.1/-0.3 | |
Apparent Porosity % | ≤18 | ≤19 | |
Bulk Density g/cm³ | ≥2.35 | ≥2.45 | |
Cold Crushing Strength MPa | ≥50 | ≥60 |