Industry Knowledge of Silicon Carbide Refractory Brick

Silicon carbide refractory brick, also known as SiC refractory brick, is a high-quality refractory material used in various industries for its excellent thermal conductivity, high mechanical strength, high temperature resistance, and excellent resistance to chemical corrosion.

Classified as one of the high-grade refractory materials, silicon carbide refractory bricks are widely used in industries such as metallurgy, ceramics, glass, and cement for its superior properties. They can sustain higher temperatures and pressures than other refractory materials.

The main technical parameters of silicon carbide refractory bricks include:
1. Bulk density: 3.01-3.15 g/cm³
2. Apparent porosity: 16-20%
3. Cold crushing strength: 50-90 MPa
4. Thermal conductivity: 24-60 W/(m·K)
5. Refractoriness: Higher than 1800℃

The production process of silicon carbide refractory bricks includes raw material preparation, molding, drying, and firing. Generally, the raw materials used for the production are silicon carbide, silicon metal, and petroleum coke. After mixing and grinding, the materials are molded into specific shapes using a high-pressure press, and then dried under certain conditions. Subsequently, the molded shapes are fired at a high temperature above 2200℃ to obtain the final product.

Silicon carbide refractory bricks are classified into different grades according to their specific applications. The classification is based on the content of silicon carbide, which determines the thermal strength, corrosion resistance, and thermal stability of the bricks. Some of the grades of SiC refractory bricks include:
1. High silicon carbide refractory bricks
2. Medium silicon carbide refractory bricks
3. Low silicon carbide refractory bricks
4. Clay bonded silicon carbide refractory bricks
5. Oxide-bonded silicon carbide refractory bricks

In conclusion, silicon carbide refractory bricks are highly customizable and can be manufactured to meet specific requirements of various industries. They are widely used for their superior properties and excellent resistance to high temperatures and chemical corrosion. The industry knowledge of silicon carbide refractory bricks includes its technical parameters, production process, and classification, which are crucial for choosing the right refractory material for specific applications.