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Introduction of silicon carbide bricks for blast furnace throat
Silicon carbide bricks for blast furnace throat are a refractory product made of silicon carbide as the main raw material. The content of silicon carbide is 72%~99%. Generally, black silicon carbide (more than 96% SiC content) is selected as raw material, which is relatively stable for acidic slag.
Features of alumina silicon carbide brick
Silicon carbide brick for blast furnace throat has good wear resistance, corrosion resistance, high temperature strength, good thermal shock stability, high thermal conductivity, low thermal expansion coefficient and other characteristics, belonging to the high performance refractory material.
Application of alumina silicon carbide brick
In addition to the application in the throat of blast furnace, silicon carbide brick is also widely used in industry. It can be used in the lining, nozzle, plug of metallurgical steel cylinder, bottom and bosh of blast furnace, etc.
More relevant refractory products: Lightweight mullite castable
Parameters of alumina 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 |
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