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Lightweight high alumina insulation brick, also called High alumina lightweight brick, the alumina content is above 48%, and the major crystalline phase is mullite、corundum, and glass phase. Build density between 0.4～1.35g/cm3, cold crushing strength between 1-8 MPa. It has the characteristics of high service temperature, low impurity content, high-temperature resistance, and good heat insulation performance.
Technical parameter of lightweight high alumina insulation brick
| Item | Index | |||||
| LG-1.2 | LG-1.0 | LG-0.8 | LG-0.7 | LG-0.6 | LG-0.5 | |
| Al2O3 % | ≥48 | |||||
| Fe2O3 % | ≤2 | |||||
| Bulk Density g/cm3 | ≤1.2 | ≤1.0 | ≤0.8 | ≤0.7 | ≤0.6 | ≤0.5 |
| Cold Crush Strength,MPa | ≥4.5 | ≥3.5 | ≥2.5 | ≥2.2 | ≥1.6 | ≥1.2 |
| Permanent Linear Change Rate,% | 1400℃×12h ≤-2 | 1350℃×12h ≤-2 | 1250℃×12h ≤-2 | |||
| Thermal Conductivity W/(m·K) 350±25℃ | ≤0.55 | ≤0.50 | ≤0.35 | ≤0.30 | ≤0.25 | ≤0.20 |
Application fields of lightweight high alumina bricks
Widely used in ceramic tunnel kilns, roller kilns, shuttle kilns, steel industry coking furnaces, and other thermal equipment. Mainly used for lining and insulation in areas not subject to strong erosion by high-temperature melts. When in direct contact with flame, the surface contact temperature shall not be higher than 1350℃.
Lightweight high alumina bricks shipping
Rongsheng high alumina brick factory
Rongsheng is a refractory material factory that supports customizing refractory bricks of different shapes and aluminum contents. Only high-aluminum insulation bricks that meet the standards can be packaged and transported. Please feel free to contact us if needed.
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