The maximum service temperature of nozzle brick depends on its material and specific application scenarios. The following are the service temperature ranges of different types of nozzle bricks:

I. High-alumina nozzle brick

Fire resistance: above 1770℃.

Service temperature: usually around 1500℃.

This kind of nozzle brick is suitable for high temperature environment and has good corrosion resistance and high temperature stability.

II. Magnesia nozzle brick

Fire resistance: above 1700℃.

Service temperature: about 1600℃.

Magnesia nozzle brick has strong corrosion resistance, but strong thermal conductivity, which is easy to cause nodulation during pouring.

III. Zirconium nozzle brick

Fire resistance: above 1800℃.

Service temperature: about 1800℃.

Zirconium nozzle brick has high fire resistance and corrosion resistance, and is suitable for ultra-high temperature environment, such as aerospace and stainless steel casting.

IV. Aluminum-carbon nozzle brick

Fire resistance: above 1600℃.

Service temperature: about 1500℃.

Aluminum-carbon nozzle brick has good thermal shock resistance and corrosion resistance, and is often used in continuous casting tundish.

V. corundum nozzle brick

Fire resistance: above 1790℃.

Service temperature: about 1600℃.

Corundum nozzle brick belongs to advanced refractory material, which has high refractoriness and good corrosion resistance.

VI. Clay nozzle brick

Fire resistance: 1580℃.

Service temperature: about 1400℃.

Clay nozzle brick is suitable for low temperature environment, but its corrosion resistance is weak.

VII. Summary

Different materials of nozzle bricks have different refractories and service temperature ranges. In practical application, the suitable material of nozzle brick should be selected according to the specific casting process and temperature requirements. For example, for the pouring of high temperature steel, it is suggested to use high aluminum or zirconium nozzle bricks; For ordinary steel grades, clay or aluminum-carbon nozzle bricks may be more economical and applicable.