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Light Weight Insulation Mllite Fire Brick for Industrial Furnace
1.Features
Light Weight Mullite bricks gains typical advantages including low thermal conductivity, fine thermal shock resistance, low heat containment and low iron content, meanwhile, the outstanding mechanical flexibility, coupled with high insulating efficiency expands the extensive applications of IFB in a variety of industrial markets.
2.Specification
| Description | VB-3-23 | VB-3-26 | VB-3-28 | VB-3-30 |
| Chemical Composition (%) | ||||
| Al2O3 | 42 | 56 | 67 | 73 |
| SiO2 | 55 | 41 | 30 | 24 |
| Fe2O3 | ≤1 | ≤0.8 | ≤0.7 | ≤0.7 |
| K2O + Na2O | 1.1 | 1.7 | 1.7 | 1.7 |
| Physical Properties | ||||
| Density(kg/m3) | 600 | 800 | 900 | 1000 |
| Classification Temperature(°F) | 2300 | 2600 | 2800 | 3000 |
| Cold Crushing Strength(MPa) | 1.2 | 1.8 | 2.5 | 3.3 |
| Modulus of Rupture(MPa) | 1.0 | 1.7 | 2.3 | 3.1 |
| Permanent Linear Change(%) x 24hrs | ≤0.6 | ≤0.6 | ≤0.8 | ≤0.9 |
| Thermal Expansion(%)1800°F | 0.5 | 0.52 | 0.52 | 0.53 |
| Thermal Conductivity(W/m.k) | ||||
| 660°F | 0.18 | 0.25 | 0.33 | 0.38 |
| 750°F | 0.20 | 0.29 | 0.35 | 0.40 |
| 1100°F | 0.24 | 0.32 | 0.37 | 0.42 |
3. Application industry
Refractory materials in the iron and steel, nonferrous metals, petrochemical, building materials, machinery, electricity, light industry and other basic industries and aerospace and ships, missiles and other military fields have a wide range of applications.
The main application areas of refractories and their respective proportions in the steel industry accounted for the largest proportion. Followed by cement, ceramics, glass, chemical, nonferrous metals.