English
loading
Products Introduction:
Mullite brick refers to a high alumina refractory material with mullite as the main crystal phase. Generally, the alumina content is between 65% and 75%.Mullite bricks have high refractoriness, which can reach above 1790℃. Mullite bricks are divided into sintered mullite bricks and fused mullite bricks.
Features:
1. Long service life.
2. Low linear expansion change.
3. Good erosion and corrosion resistance.
4. High compressive strength.
5. Good thermal shock resistance.
Application:
Mullite bricks are mainly used for hot blast stove top, blast furnace body and bottom, regenerator of glass melting furnace, ceramic sintering kiln, lining of petroleum system, etc.
Technical Properties:
Item | FMLZ-60 | FMLZ-65 | FMLZ-70 | |
Al2O3 / % | ≥60 | ≥65 | ≥70 | |
Fe2O3 / % | ≤1.5 | ≤1.2 | ≤0.8 | |
TiO2 / % | - | ≤0.6 | ≤0.5 | |
Bulk Density / g/cm3 | ≥2.5 | ≥2.6 | ≥2.65 | |
Apparent Porosity / % | ≤19 | ≤19 | ≤19 | |
0.2MPa Refractoriness Under Load / ℃ | ≥1500 | ≥1550 | ≥1600 | |
Cold Crushing Strength / MPa | ≥60 | ≥70 | ≥75 | |
Thermal Shock Resistance (900℃, water cooling) / Cycles | ≥25 | ≥30 | ≥35 | |
Thermal Expansion Rate (20~1000℃) / % | ≤0.8 | ≤0.7 | ≤0.7 | |
Permanent Linear Change (1500℃×3h) / % | ±0.5 | ±0.5 | ±0.3 | |
Creep Rate % | Testing Temperature | 1350℃ | 1400℃ | 1450℃ |
0~50 hrs | ≤0.6 | |||
20~50 hrs | ≤0.2 | |||
