The influencing factors of refractory bricks during the firing process

As a key material in high-temperature industry, the quality of refractory bricks is of great significance for the normal operation and production safety of industrial equipment. The firing process of the brick is a key factor in determining its quality, and there are many influencing factors during this process. The refractory brick factory has introduced the main influencing factors during the firing process to everyone. Let's take a look together!

The firing process of refractory bricks is carried out at high temperatures and usually requires specific kilns. Its firing is a complex process of physical and chemical changes, involving changes in material morphology, structure, and properties.

1. Temperature

The temperature directly determines the mineral composition, microstructure, and properties of bricks. Excessive temperature may lead to over firing, while low temperature may result in non sintering, both of which can have adverse effects on its performance. Therefore, precise control of firing temperature is crucial for producing high-quality bricks.

2. Burn into an atmosphere

The different atmospheres can affect the redox reaction, gas composition, and surface tension of bricks. For example, bricks fired in an oxidizing atmosphere have higher density and strength, while bricks fired in a reducing atmosphere have lower porosity and good slag resistance.

3. Burning time

The length of firing time determines the degree of physical and chemical changes of bricks at high temperatures. If the firing time is too short, it may cause the bricks to not be fully sintered; If the firing time is too long, it may cause the bricks to overheat. Therefore, reasonable control of firing time is crucial for improving the performance of bricks.

4. Chemical composition and particle size distribution of raw materials

The chemical composition of raw materials determines the mineral composition and microstructure of refractory bricks, while particle size distribution affects the forming performance of bricks and the shrinkage rate during firing. Therefore, selecting high-quality raw materials is the foundation for producing high-quality bricks.

In summary, temperature, atmosphere, time, and raw materials are all important factors that affect the firing process of refractory bricks. Understanding and mastering the impact of these factors on brick quality can help us optimize process parameters and improve the performance and quality of bricks in the production process.