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
Custom Fabrication of Shaped Refractory Components