Mullite brick
Mullite brick belongs to high alumina refractory brick, which is a kind of high-grade high alumina brick. Generally, alumina content is between 60% – 75%, which is a high alumina refractory with mullite as the main crystal phase.
Mullite brick (also called mullite refractory bricks) is a kind of fine refractory material, with stable expansion, good thermal stability, high RUL capacity, low creep under high temperature, anti-chemical erosion ability, and have a hard texture.
Physical and chemical indexes of mullite brick
ltem |
Mullite Brick |
||
Al2O3,% ≥ |
70 |
65 |
60 |
Fe2O3,% ≤ |
0.8 |
1.2 |
1.5 |
Apparent Porosity,% ≤ |
19 |
19 |
19 |
Bulk Density,g/cm3 ≥ |
2.65 |
2.6 |
2.5 |
Compressive Strength,Mpa ≥ |
75 |
70 |
60 |
Softening Temperature Under Load 0.2Mpa,℃ |
1650 |
1600 |
1550 |