Monolithic RefractoriesCastables
Wear-Resistant Refractory Castable
High-strength castable with good volume stability, high wear resistance, good thermal shock and corrosion resistance and good resistance to cracking and spalling. Grades NM-1 to NM-4.
- Grades / types
- NM-1, NM-2, NM-3, NM-4
Product overview
Wear-resistant refractory castable has good volume stability, high strength and high wear resistance. It has good thermal shock resistance and corrosion resistance, and resists cracking and spalling in use.
Key characteristics
- Good volume stability
- High strength
- High wear resistance
- Good thermal shock resistance and corrosion resistance
- Resistance to cracking and spalling in use
Technical data
| Property | Unit | NM-1 | NM-2 | NM-3 | NM-4 |
|---|---|---|---|---|---|
| Al₂O₃ | % | ≥70 | ≥75 | ≥80 | ≥85 |
| Bulk Density (110℃×24h) | g/cm³ | ≥2.6 | ≥2.75 | ≥2.8 | ≥2.9 |
| Cold Crushing Strength (CCS) (110℃×24h) | MPa | ≥60 | ≥65 | ≥70 | ≥75 |
| Cold Crushing Strength (CCS) (1400℃×3h) | MPa | ≥90 | ≥95 | ≥105 | ≥110 |
| Cold Modulus of Rupture (CMOR) (110℃×24h) | MPa | ≥8.5 | ≥9 | ≥10 | ≥11 |
| Cold Modulus of Rupture (CMOR) (1400℃×3h) | MPa | ≥13 | ≥14 | ≥15 | ≥16 |
| Cold Wear Loss | cm³ | <9.6 | <8.5 | <7.3 | <6 |
| Refractoriness Under Load, 0.2 MPa (RUL) | ℃ | >1450 | >1490 | >1530 | >1560 |
| Thermal Shock Resistance (TSR) (900℃ Water) | cycles | >20 | >20 | >20 | >20 |
| Max Working Temperature | ℃ | 1550 | 1550 | 1600 | 1600 |
| Permanent Linear Change (PLC) | % | <-0.3 | <-0.3 | <-0.2 | <-0.2 |
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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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
- NM-1
- NM-2
- NM-3
- NM-4
Related solutions
Services that work with this family of materials.
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Technical Consultation
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