Ki sa ki main uses of refractory materials

The characteristics of refractory materials: the special functional role played by the metallurgical process in use, often used as a single component or combined with some auxiliary refractory products, there are special production processes in production, and almost all materials are selected with high performance High-end refractory materials, such as magnesia carbon materials, aluminum carbon materials, zirconium carbon materials, corundum-based zirconia materials, etc., and most of the functional refractories used at present are carbon-containing refractories.

Performance requirements of refractory materials: the use conditions of functional refractory materials are relatively harsh, such as the sliding surface withstands the thermal shock of high-temperature molten steel during use and the wear of the sliding surface during flow control: continuous casting long nozzle, integral stopper, immersion type The nozzle is subjected to the thermal shock of the molten steel and the strong erosion of the slag liquid during the pouring;

During use, the air-permeable brick is subjected to the strong thermal cycle of the operation process and the erosion effect of the molten steel flow under the agitation of the air flow, and so on. With the continuous development and maturity of continuous casting technology, there are higher and higher requirements for the service life and functions of functional refractories.

Therefore, the common requirements for castables: in order to ensure safety, reliability and long service life under harsh conditions of use, functional refractories for continuous casting must have high thermal shock resistance, spalling resistance, and high corrosion resistance. And the corresponding structural features that should be possessed in order to fulfill its function.