The fire resistance of clay refractory bricks for coke ovens is usually between 1690℃ and 1750℃. Specifically, according to different product specifications and components, its fire resistance will be different. For example, the fire resistance of some clay refractory bricks for coke ovens with high aluminum content (such as JN-42) can reach 1750℃, while that of ordinary clay refractory bricks for coke ovens is generally around 1730℃.

I. Fire resistance of different models

JN-40: fire resistance ≥1740℃.

JN-42: fire resistance ≥1750℃.

II. Actual service temperature

Although the fire resistance of clay refractory bricks used in coke ovens is high, in practical use, their maximum service temperature is usually lower than the fire resistance. Generally speaking, the service temperature range of clay refractory brick for coke oven is 1300℃~1400℃. This is because the load softening temperature, thermal shock stability and other factors need to be considered in the actual working conditions of refractory bricks.

III. Performance characteristics

Clay refractory bricks for coke ovens not only have high refractoriness, but also have good thermal shock stability and corrosion resistance. Its thermal shock stability is good, and it can withstand the frequent temperature changes of coke oven during production. In addition, its apparent porosity is low, usually between 20% and 24%, which makes the brick body denser and more resistant to erosion in high temperature environment.

IV. Usage scenarios

Clay refractory bricks for coke oven are mainly used in key parts of coke oven, such as carbonization chamber and combustion chamber. These parts need refractories to remain stable under high temperature, high pressure and frequent temperature changes, and at the same time resist the corrosion of acid gas and slag.

To sum up, the fire resistance of clay refractory bricks for coke oven is between 1690℃ and 1750℃, and the actual use temperature is generally between 1300℃ and 1400℃, which can meet the use requirements of coke oven in high temperature environment.