Industry Knowledge of Silicon Carbide Based Refractory Castables

Silicon carbide based refractory castables are highly heat-resistant materials that are used in high-temperature industries such as steel making, cement and glass production, and petrochemical industries. They provide excellent resistance to extreme high temperatures, corrosion, and wear resistance.

These castables are classified into different grades, depending on their characteristics and composition. For example, the grades are classified into low cement, ultra-low cement, and no cement castables, depending on the amount of cement used in the production process. The different types of castables can withstand temperatures ranging from 1,400°C to 1,700°C.

The technical parameters of silicon carbide based refractory castables are critical in determining their suitability for specific applications. These parameters include density, porosity, thermal conductivity, modulus of rupture, compressive strength, and creep resistance.

Density is a crucial factor in determining the insulating properties of the refractory castables. Porosity can affect the refractoriness of the material. Thermal conductivity is a measure of how well the castables can conduct heat. The modulus of rupture reflects the ability of the castables to withstand thermal shock, while compressive strength determines their resistance to crushing.

The production of silicon carbide based refractory castables involves a complex process that includes the selection of raw materials, mixing, and drying. The raw materials used in the production process are carefully selected to ensure that they meet the required specifications.

The mixing process involves the addition of water and a binder to the raw materials to form a homogenous mixture. The mixture is then poured into the mold, where it is compacted and allowed to dry for a specified period. After drying, the castables are fired in a kiln to achieve the desired properties.

Overall, silicon carbide based refractory castables have become a popular choice in high-temperature applications due to their excellent resistance to heat, corrosion, and wear. They offer high-performance characteristics and are widely used in various industries globally. The classification, technical parameters and production process make them an essential material in modern industry, with an increasing demand for higher quality materials.