Mullite refractory castable has passed ISO certification.It has good thermal shock resistance and can resist high temperature.
Mullite Refractory Castable is made of high purity mullite raw materials.Its good bulk stability make it has high thermal shock resistance.Mulllite refractory castable has the advantage of high refractoriness under load,low creep under high temperature,stong hardness,erosion-resistance and so on.
| Items | MJ-1 | MJ-2 | MJ-3 |
| Al2O3,% ≥ | 45 | 50 | 50 |
| Bulk density,g/cm3 ≤ | 1.3 | 1.5 | 1.7 |
| Compressive strength,Mpa ≥(110°C*24h) | 10 | 12 | 15 |
| Compressive strength,Mpa ≥(1350°C*3h) | 13 | 15 | 20 |
| Modulus of rupture,Mpa ≥(110°C*24h) | 3 | 4 | 5 |
| Modulus of rupture,Mpa ≥(1350°C*3h) | 4 | 5 | 6 |
| Linear change, % (1350°C*3h) | ±0.5 | ±0.5 | ±0.5 |
| Thermal conductivity,W/m.k (700°C) | 0.4 | 0.5 | 0.7 |
Mullite refractory castable is widely used for insulating lining of kinds of furnace bottom,roof,wall.