Description：
Refractory Black Silicon carbide is of a high melting point(about 2700 C) material. It is produced at high temperature in an electric resistance type furnace with quarts sand and petroleum coke. With the low thermal expansion and good ability to anti-high-temperature shock, it is an excellent refractory material.
Properties:
- low coefficient of expansion, oxidation resistance
- excellent chemical resistance
- high thermal shock resistance, wear, and hardness resistance, strength, high-temperature resistance
Applications of Refractory Black Silicon carbide :
Refractory, Furnace Burden, Casting, Ramming Compound, Refractory Bricks, etc
Kiln furniture
Metallurgical:
The silicon carbide used in steel mills is mainly composed of black silicon carbide with content of 88%-80%-75%. The content of the silicon carbide is mainly based on the different formulations. and the different use requirements of the produced steel types are also different. At high temperatures, silicon carbide decomposes into carbon and silicon ions. The chemical properties make that silicon carbide react with oxygen first, which can reduce the oxidation of molten iron. Therefore, it can be used as a deoxidizer for steelmaking.
| TYPICAL PHYSICAL PROPERTIES | Hardness: | Mohs:9.2 | Color: | Black | |
| Melting Point: | dissociated at about 2300 °C | Particle shape: | Hexagonal | ||
| Maximum service temperature: | 1900℃ | Modulus of Elasticity | 58-65×106 psi | ||
| Specific Gravity: | 3.2-3.45 g/cm3 | Coefficient of Thermal Expansion | 3.9-4.5 x10-6/ ℃ | ||
| Bulk density(LPD): | 1.2-1.6 g/cm3 | Thermal Conductivity | 71-130 W/MK | ||
| TYPICAL CHEMICAL ANALYSIS of Refractory Black Silicon carbide | |||||
| Item | SiC | F.C | Fe2O3 | Moisture | |
| SiC86 | min 86% | max 2.4% | max 2.0% | max 0.2% | |
| SiC88 | min 88% | max 2.3% | max 2.0% | max 0.2% | |
| SiC90 | min 90% | max 2.0% | max 1.8% | max 0.2% | |
| SiC92 | min 92% | max 1.8% | max 1.7% | max 0.2% | |
| SiC93 | min 93% | max 1.8% | max 1.6% | max 0.2% | |
| SiC95 | min 95% | max 1.0% | max 1.3% | max 0.2% | |
| SiC97 | min 97% | max 0.8% | max 1.2% | max 0.2% | |
| SiC97.5 | min 97.5% | max 0.8% | max 0.9% | max 0.2% | |
| SiC98 | min 98% | max 0.5% | max 0.5% | max 0.2% | |
| AVAILABLE SIZES | |||||
| 0-1mm,1-3mm,3-5mm,5-8mm,0-10mm,0-20mm320-0#,200-0#,325# | |||||
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