Functional refractory material refers to the refractory material that can be used in special parts and can meet certain special functions produced by precision technology. It is often used as a single element or in combination with other auxiliary refractory products, and its production is prepared according to the production process.

Functional refractory material is a kind of special refractory material formed with the development of continuous casting technology in iron and steel metallurgy industry, more precisely, it should be called functional refractory material for continuous casting. The main refractory products currently included in the functional refractories for continuous casting include sliding nozzles, long nozzles, integral plugs, immersion nozzles (commonly known as the three major parts of continuous casting), sizing nozzles and breathable bricks. Each product has a special function in use, such as flow control, blowing and stirring, preventing secondary oxidation and protecting casting, and determining the flow field distribution of molten steel in the mold. The use of these refractory materials is one of the important prerequisites to ensure the continuous casting process.

Breathable bricks:

It is mainly used for ladle, which is built on the bottom of the ladle. Argon gas is blown into the ladle through air-permeable bricks. During the process of argon gas bubbles floating up, the molten steel can be stirred, so that the temperature and composition of the molten steel in the ladle are uniform. effect;

The overall tap of the converter:

The integral tapping hole for converter tapping is used in converter tapping, and it is installed through the overall assembly method to ensure the stable use quality and long service life of the tapping hole; by optimizing the method of reducing the inner diameter of the tapping, it can meet the requirements of different converters for the tapping time. needs;

Converter tap slag blocking slide gate system:

The slag blocking system technology is adopted when the converter is tapping, and the slag blocking rate reaches 100%, which reduces the amount of slag, reduces the content of inclusions and harmful elements in the molten steel, reduces the cost of the refining process, and improves the alloy yield;

Ladle control flow sliding nozzle system:

It is used for molten steel flow control operation in continuous casting and die casting process. By adopting a sliding nozzle system on the ladle, during the process of pouring steel, according to the liquid level of the tundish ladle, the sliding plate can be reasonably opened and closed to achieve accurate control of the steel pouring process. Meet the requirements of continuous casting speed;

Long nozzle:

The long shroud connects the ladle and the tundish, and transports the molten steel from the ladle to the tundish to achieve protective pouring and prevent secondary oxidation of the molten steel;

Integral stopper and tundish nozzle:

The overall stopper rod cooperates with the nozzle of the middle package, and the size of the gap between the rod head and the nozzle bowl can be controlled through the opening and closing action, so as to realize the purpose of opening, controlling and closing the flow; by blowing argon, it can effectively prevent molten steel flocculation;

Immersion nozzle:

The submerged nozzle connects the tundish and the mold, and transports the molten steel in the tundish to the mold to protect pouring, prevent secondary oxidation, nitriding and splashing of molten steel; prevent non-metallic inclusions of mold slag from being involved in steel water; adjust the molten steel flow state and injection speed, and optimize the molten steel temperature field and flow field distribution in the mold.