Refractory BricksZirconia and chrome bricks for glass and gasifier service
Chrome Corundum Brick
Chrome–corundum brick with high refractoriness, high strength, high refractoriness under load and excellent thermal shock resistance, resistant to steel slag, non-ferrous slag, gasifier slag and glass melts. Grades GGZ-5 to GGZ-30.
- Grades / types
- GGZ-5, GGZ-12, GGZ-20, GGZ-30
Product overview
Chrome corundum brick has high refractoriness, high strength, a high refractoriness under load and excellent thermal shock resistance. It has good corrosion resistance to steel slag, non-ferrous smelting slag, coal gasifier slag and various glass melts.
Key characteristics
- High refractoriness and high strength
- High refractoriness under load
- Excellent thermal shock resistance
- Resistance to steel slag, non-ferrous smelting slag and coal gasifier slag
- Resistance to glass melts
Technical data
| Property | Unit | GGZ-5 | GGZ-12 | GGZ-20 | GGZ-30 |
|---|---|---|---|---|---|
| Cr₂O₃ | % | ≥5 | ≥12 | ≥20 | ≥30 |
| Cr₂O₃+Al₂O₃ | % | ≥93 | ≥93 | ≥93 | ≥93 |
| Fe₂O₃ | % | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.3 |
| Apparent Porosity | % | ≤18 | ≤18 | ≤18 | ≤18 |
| Bulk Density g/ | cm³ | ≥3.10 | ≥3.20 | ≥3.40 | ≥3.50 |
| Cold Crushing Strength (CCS) | MPa | ≥100 | ≥100 | ≥100 | ≥100 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1700 | ≥1700 | ≥1700 | ≥1700 |
Where Refractories Are Used
Industry
Steel & Iron
Refractories in iron and steel production are used in the blast furnace, hot blast stove, cast house and coke oven on the ironmaking side, and in the hot metal ladle, converter, electric arc furnace, steel ladle, tundish, RH degasser and reheating furnace on the steelmaking side. Material selection varies by operating zone and includes silica, high alumina, magnesia, magnesia-carbon, alumina-silicon carbide-carbon and silicon carbide products together with castables, ramming mixes and mortars.
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Nonferrous Metals
Refractories for nonferrous metals divide into two groups. For aluminium they line the electrolysis cell side wall, corners and bottom, the smelter and the holding furnace, using silicon nitride bonded silicon carbide, carbon-based materials, low cement and non-stick castables and insulation. For copper, zinc, lead and nickel they are magnesia-chrome bricks in directly bonded, semi-rebonded and fused rebonded types.
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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.
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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.
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Available grades, shapes and sizes
Available grades
- GGZ-5
- GGZ-12
- GGZ-20
- GGZ-30
Related solutions
Services that work with this family of materials.
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Technical Consultation
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