The choice of lining material for industrial kilns directly affects production efficiency and operating costs. Among the many types of refractory bricks, clay refractory bricks occupy a mainstream position due to their balanced performance. Why has it continued to be favored? The key lies in the precise matching of its characteristics with the needs of the kiln.
1.Characteristics and Applications of Clay Bricks
Clay refractory bricks are mainly made of 50% soft clay and 50% hard clay. The Al₂O₃ content is usually between 30% and 48%, and the refractoriness can reach 1580-1750℃.
Refractory clay bricks not only have excellent thermal shock resistance, but also have a moderate load softening temperature.
Therefore, clay bricks can provide stable protection for kilns, heat treatment furnaces, and ordinary boilers.
Although high-alumina refractory bricks or refractory silica bricks perform better in specific high-temperature zones. However, the versatility of clay bricks makes them the preferred choice for large-scale kiln construction.
In addition, its mineral composition makes it difficult to peel off during repeated heating and cooling, which is especially important for kilns that operate intermittently.
2.Refractory Brick Prices and Model Selection
The price of clay bricks is one of their core competitive advantages in the market.
Compared to high-alumina bricks or magnesia-chrome bricks, clay bricks have lower material costs, making them more attractive in terms of overall construction cost.
Refractory material manufacturers typically offer a wide range of models. Common models such as N-1, N-2a, and N-3b correspond to different Al₂O₃ contents and compressive strength indicators. Therefore, the purchaser can accurately select the model based on the specific temperature zone of the kiln.
It should be noted that although clay bricks are inexpensive, improper selection may lead to frequent repairs, which may increase the overall cost.
Therefore, the evaluation should not only look at the unit price, but also take into account the kiln’s life cycle.
3.Recommendations for Selecting and Purchasing Refractory Brick Manufacturers
Reliable clay refractory brick manufacturers not only provide qualified products, but also offer support in terms of construction plans and after-sales service. High-quality refractory material suppliers usually have sufficient raw material reserves, thus ensuring a more reliable delivery cycle.
Henan Ruitai Lianxin Refractory Materials Co., Ltd. has been focusing on the production and manufacturing of refractory materials for 20 years. The company not only provides customers with high-quality refractory bricks, but also offers the most suitable solutions based on the kiln conditions.
If you have any needs for refractory materials, please feel free to contact us. We not only provide clay refractory bricks, but also high-alumina bricks, corundum bricks, refractory castables, ramming mixes and other high-quality refractory materials.
Choosing Ruitai Lianxin is choosing strength.