The main uses of refractory materials

Characteristics of refractory materials: The special functional role played by the metallurgical process in use is often used as a single component or combined with some auxiliary refractory products, the production has a special production process, and the material selection is almost all high-grade refractory materials with high performance, such as magnesium carbon materials, aluminum carbon materials, zirconium carbon materials, corundum zirconium oxide materials, etc. At present, most of the functional refractories used are carbonaceous refractories.

The performance requirements of refractory materials: the use conditions of functional refractory materials are relatively harsh, such as the thermal impact of the skateboard in use and the wear of the sliding surface when the flow is controlled: the long nozzle for continuous casting, the whole plug rod, and the immersion nozzle are subjected to the thermal impact of the liquid steel when the pouring is started and the strong erosion of the slag during the pouring;

The breathable brick is subjected to the strong thermal circulation in the operation process and the erosion of the molten steel flow under the agitation of the air flow. With the continuous development and maturity of continuous casting technology, there are higher and higher requirements for the service life and function of functional refractory materials.

Therefore, the common requirements for castables: in order to ensure the safety and reliability under harsh conditions of use and high service life, functional refractories for continuous casting need to have high thermal shock resistance and spalling resistance, high erosion resistance and the corresponding structural characteristics in order to play its functional role.