Refractory Castable
INTRODUCTION
High aluminum castable is high aluminum aggregate with AL2O3 content greater than 75% as particle raw materials, combined with high aluminum powder and admixture composed of the overall aluminum content > 55% of the amorphous refractory castable, high aluminum castable after the initial solidification, standard curing to 28d, compressive strength up to 40~60MPa. It is characterized by slow hydration rate, high late strength and high refractoriness.
FEATURES
1. High refractoriness under load;
2. High compressive strength;
3. Good abrasive resistance ;
PHYSICAL AND CHEMICAL INDICATORS
Item | Unit | High Strength Mullite Castable | High Alumina High Strength Castable | High Strength Alkali Resistance Castable | ||
Chemical composition | Al2O3 | % | ≥65 | ≥65 | ≥45 | |
SiO2+SiC | % | ≤30 | ≤30 | ≥50 | ||
Bulk Density | g/cm3 | ≥2.65 | ≥2.50 | ≥2.20 | ||
Cold Crushing Strength | 110℃*24h | MPa | ≥90 | ≥80 | ≥50 | |
1100℃*3h | MPa | ≥100 | ≥80 | ≥60 | ||
Modulus of Rupture | 110℃*24h | MPa | ≥9 | ≥8 | ≥5 | |
1100℃*3h | MPa | ≥12 | ≥10 | ≥6 | ||
Linear Change after Firing | % | 1200*3h ±0.3 | 1200*3h ±0.4 | 1200*3h ±0.5 |
PRODUCT PICTURE