Silicon carbide bricks
Mohs hardness of 9. High resistance to acidic slags.
Application
Designed for furnaces used in non-ferrous metal smelting, aluminum casting molds, electric furnaces, waste incinerators, blast furnaces, and zinc distillation kettles.
Description
Silicon Carbide (Carborundum) Bricks are refractory materials primarily composed of SiC (72–99% content). Classification by Bonding Type: 1. Clay-bonded (with added fireclay) 2. Si₃N₄-bonded (silicon nitride) 3. Sialon-bonded (Si₆-zAlzOzN₈-z) 4. β-SiC-bonded (nano silicon carbide particles) 5. Oxynitride-bonded (Si₂ON₂) 6. Recrystallized (bond-free, sintered at >2200°C)Specifications
| Item | Bonding Type | |||||
|---|---|---|---|---|---|---|
| SiO2 | Clay | Si3N4 | Sialon | β-SiC | Recrystal-SiC | |
| SiC % | 90 | ≥85 | ≥75 | ≥70 | 94 | ≥99 |
| SiO2 % | 10 | 6~10 | / | / | 3.0 | / |
| Si3N4 % | / | / | ≥20 | / | / | / |
| Sialon % | / | / | / | ≥20 | / | / |
| Bulk Density, g/cm3 | 2.6~2.7 | 2.5~2.6 | 2.6~2.66 | 2.7 | 2.63 | 2.6~2.8 |
| Apparent Porosity, % | 12~15 | 14~20 | 19 | 15 | 16 | 7~20 |
| CCS, MPa | 100~145 | 100~160 | 220 | 228 | 140 | / |
| CMOR, MPa | 25 | 20~25 | 45 | 50 | 30~50 | 70~100 |
| Thermal Expansion Rate, ×10-6/°C | 4.7 | 4.6 | 4.6 | 5.1 | 5.5 | 4.5~5 |
| Thermal Conductivity, W/(m·K) 1000°C | 11~14.5 | 11~14 | 15 | 17.4 | 12.8 | 28 |
Features
Excellent thermal conductivity
Rapid heat transfer capabilityAbrasion Wear Resistance
Mohs hardness of 9 – second only to diamond (10)High Thermal Shock Resistance
Low Coefficient of Thermal ExpansionApplications
- Ceramic Industry: Shelving plates, posts, saggars
- Metallurgy: Ladle linings, tundish nozzles, stopper rods
- Blast Furnaces: Hearth linings, tuyere coolers, tuyeres, cooling staves, tap holes
- Non-Ferrous Metallurgy: Zinc distillation kettles; aluminum electrolytic cell linings
- Heating Furnaces: For Steel Slab Reheating
- Chemical Industry: Lining Plates and Thermal Insulation Partitions for High-Temperature Reactors
Blast Furnace Tuyere Products
For Blast Furnace Cooling Plates
Refractory Plates for Silicate Industry Furnaces
Silicon Carbide Products for Pyrolysis Furnaces
Silicon Nitride Bonded Silicon Carbide Brick for Waste Incineration Furnaces