Refractory BricksAlumina–silica and corundum bricks
Corundum Brick
Dense corundum brick with high refractoriness under load and good chemical stability against acidic and alkaline slag, metal and molten glass, in grades GYZ-95 to GYZ-99A.
- Grades / types
- GYZ-99A, GYZ-99B, GYZ-98, GYZ-95
Product overview
Corundum brick has a high refractoriness under load and good chemical stability. It offers strong resistance to acidic and alkaline slag, to metal and to molten glass, and has a compact structure.
Key characteristics
- High refractoriness under load
- Good chemical stability
- Strong resistance to acidic and alkaline slag, metal and molten glass
- Compact structure
Technical data
| Property | Unit | GYZ-99A | GYZ-99B | GYZ-98 | GYZ-95 |
|---|---|---|---|---|---|
| Al₂O₃ | % | ≥99 | ≥99 | ≥98 | ≥95 |
| SiO₂ | % | ≤0.15 | ≤0.2 | ≤0.5 | — |
| Fe₂O₃ | % | ≤0.1 | ≤0.15 | ≤0.2 | ≤0.3 |
| Apparent Porosity | % | ≤19 | ≤19 | ≤19 | ≤20 |
| Bulk Density | g/cm³ | ≥3.20 | ≥3.15 | ≥3.15 | ≥3.1 |
| Cold Crushing Strength (CCS) | MPa | ≥80 | ≥80 | ≥80 | ≥100 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
| Permanent Linear Change (PLC) (1500℃×2h) | % | ±0.2 | ±0.2 | ±0.2 | ±0.2 |
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 Industry
Available grades, shapes and sizes
Available grades
- GYZ-99A
- GYZ-99B
- GYZ-98
- GYZ-95
Related solutions
Services that work with this family of materials.
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Technical Consultation
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