Silicon carbide brick is a kind of refractory brick with SiC as the main component, which is made by firing industrial SiC as raw material. Features: High strength at room temperature and high temperature, large thermal conductivity, small coefficient of linear expansion, good thermal shock resistance, excellent high temperature wear resistance, and strong resistance to chemical erosion.
Silicon carbide brick classification.Oxide bonded silicon carbide bricks are divided into 3 types of clay bonded silicon carbide bricks, mullite bonded silicon carbide bricks and silicon dioxide bonded silicon carbide bricks. Nitride bonded silicon carbide brick is divided into: Si3N4, Sialon, Si2N2O bonded/complex bonded silicon carbide brick.
Characteristics of silicon carbide bricks.
High strength at room temperature and high temperature, large thermal conductivity, small coefficient of linear expansion, good thermal shock resistance, excellent high temperature wear resistance, and strong resistance to chemical erosion.
Application areas of silicon carbide bricks.
Widely used in steel, non-ferrous metallurgy, ceramics, chemical, electric power and aerospace industries.
Support custom silicon carbide brick all kinds of brick type, can come to the picture custom processing.
Silicon carbide brick performance index
| Στοιχείο | Clay-bound SiC | Clay-bound SiC | Mullite bonded SiC | SiO2-bound SiC | SiO2 combined with SiC | ||
| 1 | 2 | 3 | |||||
| Bulk density /g – cm-3 | 2.4-2.6 | Approximate 2.5 | – | 2.70-2.75 | 2.66 | 2.78 | 2.82 |
| Porosity, % | 15-25 | 14～18 | 14～16 | 7-8 | 13.3 | 5.8 | 6 |
| Normal temperature compressive strength/MPa | – | Approximate 100 | ＞130 | 120 | 150 | ＞130 | |
| Coefficient of linear expansion, ℃-1(20 to 1000 ℃) | – | 4.6×10 -6 | – | ＜4.9×10 -6 | 4.8×10 -6 | 4.8×10 -6 | （4.5-4.9）×10 -6 |
| Thermal conductivity, W – ( m – k ) -1(1000 ℃) | – | 11 | – | 15.7-16.9 | 15.7（ 1200 ℃） | 16.2（1200 ℃） | 16.8-17.4 |
| ω(SiC), % | 50～90 | ＞85 | ＞70 | ≥90 | 88 | 89.8 | ≥90 |
| ω(SiO2), % | – | – | – | – | 9.5 | 8.9 | – |
| ω(Al2O3), % | – | – | – | – | 1.5 | 0.5 | – |
| ω(Fe2O3), % | – | – | – | – | 0.7 | 0.3 | – |
Application of Silicon Carbide Brick
Our company produces silicon carbide brick, widely used in steel, non-ferrous metallurgy, ceramics, chemical, electric power and aerospace industries. We adjust the performance of our products for different parts of the kiln and different temperature requirements in the production environment of the steel industry. At the same time, we use shaped brick masonry in complex areas, taking into account the economic benefits and post-maintenance needs of enterprises.
