Monolithic RefractoriesPlastics and ramming mixes
Wear-Resistant Refractory Plastic
Refractory plastic with convenient installation, good plasticity and a high-strength, wear-resistant working layer, in high alumina, silicon carbide and zircon chrome corundum types.
- Grades / types
- NMK1, NMK4 (SiC), NMK5 (SiC), NMK6 (SiC), NMK7 (Zircon Chrome Corundum)
- Specification tables
- 2: High alumina grades; Silicon carbide and zircon chrome corundum grades
Product overview
Wear-resistant refractory plastic is convenient to install, has good plasticity and good wear resistance. The wear layer formed after installation has high strength and good wear resistance.
High alumina grades (NMK1), silicon carbide grades (NMK4 to NMK6) and a zircon chrome corundum grade (NMK7) are specified.
Key characteristics
- Convenient installation
- Good plasticity
- High-strength wear layer after installation
- High alumina, silicon carbide and zircon chrome corundum types
Technical data
| Property | Unit | NMK1 | NMK1 | NMK1 |
|---|---|---|---|---|
| Al₂O₃ | % | ≥65 | ≥75 | ≥85 |
| Bulk Density (110℃×24h) | g/cm³ | ≥2.5 | ≥2.7 | ≥2.8 |
| Permanent Linear Change (PLC) (1000℃×3h) | % | -0.4~0 | -0.5~0 | -0.5~0 |
| Cold Crushing Strength (CCS) (1000℃×3h) | MPa | ≥70 | ≥80 | ≥90 |
| Wear Resistance (1000℃×3h) | cm³ | ≤7 | ≤6 | ≤5 |
| Thermal Shock Resistance (TSR) (1000℃ Water; 1000℃×3h) | cycles | ≥30 | ≥30 | ≥25 |
| Plasticity Index | % | 15~55 | 15~55 | 15~55 |
| Thermal Conductivity (1000℃) | W/(m·K) | 1.1~1.6 | 1.1~1.6 | 1.6~2.0 |
| Max Working Temperature | ℃ | 1400 | 1500 | 1600 |
- The specification lists all three high alumina columns as NMK1; individual grade codes to be confirmed with the factory.
| Property | Unit | NMK4 (SiC) | NMK5 (SiC) | NMK6 (SiC) | NMK7 (Zircon Chrome Corundum) |
|---|---|---|---|---|---|
| Al₂O₃ | % | — | — | — | ≥80 |
| SiC | % | ≥40 | ≥60 | ≥70 | — |
| Cr₂O₃ | % | — | — | — | ≥3 |
| ZrO₂ | % | — | — | — | ≥2 |
| Bulk Density (110℃×24h) | g/cm³ | ≥2.4 | ≥2.5 | ≥2.6 | ≥2.8 |
| Permanent Linear Change (PLC) (1000℃×3h) | % | -0.4~0 | -0.5~0 | -0.6~0 | -0.6~0 |
| Cold Crushing Strength (CCS) (1000℃×3h) | MPa | ≥60 | ≥70 | ≥80 | ≥90 |
| Wear Resistance (1000℃×3h) | cm³ | ≤7 | ≤6 | ≤5 | ≤5 |
| Thermal Shock Resistance (TSR) (1000℃ Water) | cycles | ≥30 | ≥35 | ≥40 | ≥30 |
| Plasticity Index | % | 15~55 | 15~55 | 15~55 | 15~55 |
| Thermal Conductivity (1000℃) | W/(m·K) | 3~5 | 5~7 | 6~8 | 2~3 |
| Max Working Temperature | ℃ | 1400 | 1500 | 1600 | 1600 |
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
- NMK1
- NMK4 (SiC)
- NMK5 (SiC)
- NMK6 (SiC)
- NMK7 (Zircon Chrome Corundum)
Related solutions
Services that work with this family of materials.
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Technical Consultation
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