Mullite Insulation Brick
The products are made according to the international standard. They are featured in low Fe2O3 composition, good thermal shock resistance and low thermal conductivity. The products can supply for furnace lining or heat reserving layer of roller kiln, cracking furnace and shuttle furnace etc.
Item | Index | |||
GJM23 | GJM26 | GJM28 | GJM30 | |
| Al2O3 % | ≥40 | ≥55 | ≥65 | ≥70 |
| Fe2O3 % | ≤1.0 | ≤1.0 | ≤1.0 | ≤1.0 |
| Classification temperature,℃ | 1260 | 1430 | 1540 | 1650 |
Bulk density,g/cm3 | ≤0.55-0.60 | ≤0.78 | ≤0.88 | ≤1.02 |
C.C.S.,Mpa | 1.2 | 1.6 | 2.1 | 2.5 |
Bending resistant strength,Mpa | 0.9 | 1.4 | 1.8 | 2 |
Linear change on reheating 24H,% | 0.5 | 0.5 | 0.5 | 0.5 |
Thermal conductivity,w/m.k，800℃ | 0.18 | 0.31 | 0.36 | 0.41 |
Thermalconductivity,w/m.k，1200℃ | - | 0.35 | 0.41 | 0.46 |