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Brief introduction of silicon carbide brick
Silicon carbide bricks are refractory products made of silicon carbide as the main raw material. Silicon carbide content is 72%~99%. Generally, black silicon carbide (with more than 96% SiC content) is used as raw material, with binder (or without binder) added, and is prepared through batching, mixing, molding, firing and other processes. The main crystalline phase is silicon carbide.
Features of silicon carbide brick
High temperature strength, high 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 iron and steel, nonferrous metallurgy, ceramics, chemistry, electric power, aerospace and other industrial fields.
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 |