Monolithic RefractoriesCastables
Steel Fiber Reinforced Castable
Castable reinforced with steel fiber for high strength, good toughness, thermal shock resistance, spalling resistance and wear resistance in kiln zones with large temperature gradients. Grades GNM60 to GNM90.
- Grades / types
- GNM60, GNM70, GNM75, GNM80, GNM90
Product overview
Steel fiber reinforced castable has high strength, good toughness, good thermal shock resistance, spalling resistance and strong wear resistance.
It is suitable for kiln zones with large temperature gradient changes that are prone to spalling and damage.
Key characteristics
- High strength
- Good toughness
- Good thermal shock resistance
- Spalling resistance
- Strong wear resistance
Technical data
| Property | Unit | GNM60 | GNM70 | GNM75 | GNM80 | GNM90 |
|---|---|---|---|---|---|---|
| Al₂O₃ | % | ≥60 | ≥70 | ≥75 | ≥80 | ≥90 |
| Bulk Density (110℃×24h) | g/cm³ | 2.3~2.4 | 2.4~2.5 | 2.5~2.6 | 2.6~2.8 | 2.9~3.1 |
| Permanent Linear Change (PLC) (1100℃×3h) | % | ±0.5 | ±0.5 | ±0.3 | ±0.3 | ±0.3 |
| Cold Modulus of Rupture (CMOR) (110℃×24h) | MPa | ≥6 | ≥7 | ≥8 | ≥9 | ≥11 |
| Cold Modulus of Rupture (CMOR) (1100℃×3h) | MPa | ≥8 | ≥10 | ≥11 | ≥11 | ≥11 |
| Cold Crushing Strength (CCS) (110℃×24h) | MPa | ≥35 | ≥45 | ≥50 | ≥55 | ≥70 |
| Cold Crushing Strength (CCS) (1100℃×3h) | MPa | ≥50 | ≥60 | ≥70 | ≥80 | ≥100 |
Applications
- Kiln zones with large temperature gradient changes prone to spalling and damage
Where Refractories Are Used
Industry
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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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.
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Available grades, shapes and sizes
Available grades
- GNM60
- GNM70
- GNM75
- GNM80
- GNM90
Related solutions
Services that work with this family of materials.
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Technical Consultation
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