QINGDAO LAURENT NEW MATERIALS CO.,LTD
QINGDAO LAURENT NEW MATERIALS CO.,LTD The Professional manufacturer of refractory and insulation materials in China.
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White Color Mullite Insulation Brick Top Grade Insulating bricks
Laurel supply several grades of mullite insulating brick for use in applications from 1260°C to 1760°C.Each grade of brick is formulated to meet specific thermal and physical requirements.After firing each brick is machined to close dimensional tolerances.Insulating bricks are manufactured utilising exceptionally high purity clays and other ceramic materials.The carefully graded organics which are used during the manufacturing process burn out during firing to give a uniform pore structure.
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| Mullite Insulating bricks | ||||
| Grade | 23 | 26 | 28 | 30 | |
| Al2O3(%) | ≥40 | ≥42 | ≥50 | ≥67 | ≥70 |
| SiO2(%) | 53 | 52 | 43 | 30 | 25 |
| Fe2O3(%) | ≤1.2 | ≤1.0 | ≤1.0 | ≤0.7 | ≤0.7 |
| Bulk density ( g/cm3 ) | 0.6 | 0.8 | 0.8 | 0.9 | 1.0 |
| Classification Temperature(°C) | 1300 | 1300 | 1400 | 1500 | 1550 |
| Cold Crushing Strength (Mpa) | ≥1 | ≥2 | ≥2 | ≥3 | ≥3.5 |
| Permanent Linear Change(%) x 12hrs | ≤1.0 | ≤1.0 | ≤1.0 | ≤0.8 | ≤0.8 |
| Thermal conductivity(W/m.k) | 0.18(400℃) | 0.20(400℃) | 0.25(400℃) | 0.33(400℃) | 0.43(400℃) |
Product Characteristics:
1. Low levels of iron and other impurities
2. High mechanical intensity
3. High refractoriness, can contact with the flame directly, suitable for various atmosphere
4. High porosity, low volume density, low thermal conductivity
5. Good heat insulating performance and energy-efficient
6. Low creep rare at high temperature,good thermal shock stability
7. Chemical corrosion resistance
8. Long service life
Application:
high alumina bricks,high temperature fire brick,alumina silica fire brick,high temp fire brick,high alumina refractory bricks,alumina fire brick,high alumina fire bricks