Thermal Insulation MaterialsInsulating bricks
Lightweight High Alumina Brick
Insulating high alumina brick with high working temperature, low impurity content and good thermal insulation, in six density grades from LG-0.5 to LG-1.2.
- Grades / types
- LG-1.2, LG-1.0, LG-0.8, LG-0.7, LG-0.6, LG-0.5
Product overview
Lightweight high alumina brick has a high working temperature and a low impurity content. It withstands high temperature and has good thermal insulation performance.
Key characteristics
- High working temperature
- Low impurity content
- High temperature resistance
- Good thermal insulation performance
- Six bulk density grades
Technical data
| Property | Unit | LG-1.2 | LG-1.0 | LG-0.8 | LG-0.7 | LG-0.6 | LG-0.5 |
|---|---|---|---|---|---|---|---|
| Al₂O₃ | % | ≥48 | ≥48 | ≥48 | ≥48 | ≥48 | ≥48 |
| Fe₂O₃ | % | ≤2 | ≤2 | ≤2 | ≤2 | ≤2 | ≤2 |
| Bulk Density | g/cm³ | ≤1.2 | ≤1.0 | ≤0.8 | ≤0.7 | ≤0.6 | ≤0.5 |
| Cold Crushing Strength (CCS) | MPa | ≥4.5 | ≥3.5 | ≥2.5 | ≥2.2 | ≥1.6 | ≥1.2 |
| Permanent Linear Change (PLC) | % | ≤-2 (1400℃×12h) | ≤-2 (1400℃×12h) | ≤-2 (1400℃×12h) | ≤-2 (1350℃×12h) | ≤-2 (1350℃×12h) | ≤-2 (1250℃×12h) |
| Thermal Conductivity (350±25℃) | W/(m·K) | ≤0.55 | ≤0.50 | ≤0.35 | ≤0.30 | ≤0.25 | ≤0.20 |
Where Refractories Are Used
Industry
Glass
Refractories in the glass industry line the melting tank, the superstructure, the working end and forehearth, the throat and the regenerator. Different furnace types take different materials, in fused, siliceous and magnesia groups: silica, clay, high alumina, sillimanite, mullite, fused mullite, zirconia-corundum, fused corundum and zirconium-containing refractory bricks.
Explore IndustryIndustry
Chemical & Petrochemical
Refractories in chemical and petrochemical plants line coal water slurry and residue oil gasifiers, secondary reformers, carbon black reactors, hydrogen production furnaces, gas generators and cracking furnaces. The technical reference's gasifier schemes build the lining from a high chrome brick working face, a chrome corundum brick backing, an alumina bubble brick insulating layer, refractory castables and a ceramic fibre coating or felt against the shell.
Explore IndustryIndustry
Cement
Refractories in cement plants line the preheater, the calciner and tertiary air duct, the rotary kiln from the kiln inlet through the safety, transition and burning zones to the kiln outlet, the kiln hood and burner, and the grate cooler. RISING's kiln configuration tables assign alkali-resistant bricks and castables to the preheater system, silicon mullite, magnesia spinel and magnesia-chrome bricks to the kiln zones, and low-cement and steel-fiber castables to the kiln mouths, hood and cooler.
Explore Industry
Available grades, shapes and sizes
Available grades
- LG-1.2
- LG-1.0
- LG-0.8
- LG-0.7
- LG-0.6
- LG-0.5
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Technical Consultation
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