Tundish Refractories

Zirconium Sizing Nozzle Introduction:
Zirconium sizing nozzle, the inner core uses zirconia as the main raw material. Zirconium sizing nozzle is widely used in billet continuous casting tundish. The performance of nozzle will directly affect the time of continuous casting. Reliable performance of sizing nozzle is very important for providing high quality molten steel for billet caster and successful casting operation. 

Zirconium sizing nozzle is made of stabilized zirconia and imported natural oblique zircon after being stabilized by a special process, and then formed by high pressure molding and high temperature firing. The nozzle brand can be set according to the different steelmaking environment and use requirements of users. The service life and performance of the sizing nozzle refractories are very critical. Zirconia sizing nozzle is widely used in billet continuous casting tundish. The performance of the nozzle directly affects the length of continuous casting time. The sizing nozzle is the nozzle brick in the sliding nozzle device adopted by the steel mill when casting the billet. Zirconia nozzles are highly corrosive to molten steel and molten slag. The nozzles are usually made of higher purity zircon, CaO stabilized ZrO2 and industrial zirconia.

Zirconium Sizing Nozzle Advantages:
Zirconium sizing nozzle is mainly used for continuous casting of tundish billets, blooms, rectangular billets, and small slabs.

Sizing nozzle is mainly used for continuous casting of tundish billets, blooms, rectangular billet and small plate, which is with following characteristic: 

1.High refractoriness 

2.Good thermal shock performance

3.Erosion stability 

4.Small diameter expansion

5.Long service life
Zirconium Sizing Nozzle Effect:

The sizing nozzle, as the key refractory material for billet continuous casting, plays a role in controlling the flow of molten steel, determines the drawing speed of the billet in continuous casting, and is a necessary condition to ensure the normal operation of continuous casting. It is called continuous casting function. Refractory materials. In addition to preventing pouring bursting, blockage and falling off, the sizing nozzle must not be expanded too fast to meet the requirements of long-term casting.

The production process of the sizing nozzle plays a vital role in its performance. The process parameters such as the particle gradation of raw materials, mixing time, molding pressure, drying method and firing system will all affect the performance of the nozzle. Through the control of production process factors such as granulation, molding, and firing, the service life of the sizing nozzle can be increased.