Refractory BricksSilica and fireclay bricks
Low-Porosity Clay Brick
Dense fireclay brick with low apparent porosity, high cold crushing strength and good resistance to acid and slag erosion.
- Grades / types
- ZMN-45, ZMN-42, ZMN-42L, ZMN-40
Product overview
Low-porosity clay brick has a compact structure, low porosity and high cold crushing strength. It resists acid and slag erosion, has a high refractoriness under load and good thermal shock resistance at low and medium temperature.
Key characteristics
- Compact structure with low apparent porosity
- High cold crushing strength
- Acid resistance and slag erosion resistance
- High refractoriness under load
- Good thermal shock resistance at low and medium temperature
Technical data
| Property | Unit | ZMN-45 | ZMN-42 | ZMN-42L | ZMN-40 |
|---|---|---|---|---|---|
| Al₂O₃ | % | ≥45 | ≥42 | ≥42 | ≥42 |
| Fe₂O₃ | % | ≤1.2 | ≤1.5 | ≤1.8 | ≤1.7 |
| P₂O₅ | % | — | — | ≥5 | — |
| Apparent Porosity | % | ≤12 | ≤15 | ≤14 | ≤17 |
| Cold Crushing Strength (CCS) | MPa | ≥80 | ≥70 | ≥70 | ≥55 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | ≥1500 | ≥1460 | ≥1450 | ≥1420 |
| Permanent Linear Change (PLC) | % | -0.2~0.1 (1450℃×3h) | -0.2~0.1 (1450℃×3h) | -0.2~0.1 (1450℃×3h) | -0.4~0 (1400℃×2h) |
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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Power & CFB Boilers
Refractories in CFB boilers are used in areas including the boiler combustion chamber, the cyclone separator and refeeder, the economizer, the ignition air flue and cold air chamber, and the tail flue. Material selection varies by operating zone and includes wear-resistant castables, steel-fibre-reinforced castables, wear-resistant plastic refractories, thermal-shock-resistant and fireclay castables, wear-resistant and fireclay bricks, and insulating products.
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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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Available grades, shapes and sizes
Available grades
- ZMN-45
- ZMN-42
- ZMN-42L
- ZMN-40
Related solutions
Services that work with this family of materials.
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Technical Consultation
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