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Brief introduction of silicon carbide brick
Silicon carbide brick is a refractory brick sintered with silicon carbide as the main raw material and industrial silicon carbide as the raw material. It is characterized by normal temperature and high temperature resistance, large thermal conductivity, small linear expansion coefficient, good thermal shock resistance, high temperature abrasion resistance, strong chemical corrosion resistance, etc.
Application of silicon carbide brick
Silicon carbide bricks are widely used in industrial production. It can be used for the metallurgy of steel cylinder liners, nozzles, heads, blast furnace bottoms, boshes, etc. In industrial production, high-quality quartz sand and petroleum coke form silicon carbide blocks in resistance furnaces, which are processed into silicon carbide of different sizes through crushing, pickling, alkali washing and other processes. Magnetic separation and screening or water separation. It has stable chemical properties, high thermal conductivity, small thermal expansion coefficient and good wear resistance. It is an excellent refractory material and widely used in various industrial thermal equipment.
Parameters of silicon carbide brick
| ltem | Oxide bond SiC brick | Green SiC brick | Corundum silicon carbide brick | Mullite silicon carbide brick | High alumina SiC brick |
| SiC, % | ≥90 | ≥90 | ≥70 | ≥65 | ≥20 |
| Al2O3, % | – | – | – | ≥20 | ≥55 |
| Fe2O3, % | ≤0.6 | ≤0.6 | ≤1.0 | ≤1.0 | ≤1.5 |
| Bulk density, g/cm3 | ≥2.6 | ≥2.6 | ≥2.7 | ≥2.3 | ≥2.5 |
| Apparent porosity, % | ≤17 | ≤17 | ≤22 | ≤20 | ≤20 |
| Cold crushing strength, MPa | ≥100 | ≥100 | ≥100 | ≥80 | ≥80 |
| Refractoriness under load (0.2MPa,0.6%) | ≥1650 | ≥1650 | ≥1700 | ≥1600 | ≥1600 |