Tunnel kilns are widely used in the ceramics industry, and their thermal efficiency directly determines the production cost of enterprises. To maintain the long-term and efficient operation of the kiln, the refractory fire brick lining is particularly important.
1. Key performance requirements of refractory bricks in tunnel kilns
As the basic material for constructing the lining of tunnel kilns, refractory bricks must possess excellent high-temperature strength and good thermal shock stability.
refractory brick
At the same time, the friction of materials and the scouring effect of airflow within the kiln require refractory bricks to have sufficient mechanical strength.
Furthermore, high-quality refractory materials can adapt to frequent temperature fluctuations, avoiding unplanned downtime for maintenance due to brick cracking or spalling.
2. Selection of different refractory bricks
The working conditions of different parts of a tunnel kiln vary significantly; therefore, the selection of refractory bricks needs to be considered in different areas.
(1) Kiln walls
This area bears high temperatures and mechanical stress, and clay bricks or high-alumina bricks with high load softening temperatures are usually selected.
(2) Kiln roof
The kiln roof is an arched structure that needs to bear its own weight and thermal stress. Therefore, silica bricks or magnesia-alumina bricks with high strength and good thermal shock stability are often selected.
(3) Combustion chamber
The combustion chamber has the highest temperature and complex atmosphere. Therefore, corundum bricks or chrome corundum bricks with higher refractoriness are required here.
(4) Kiln car
Kiln car lining bricks require both wear resistance and thermal shock resistance, and cordierite bricks or mullite bricks are commonly used.
Tunnel kilns
It is evident that only by rationally configuring refractory bricks in different parts can the overall performance of the kiln lining be fully utilized.
3. Supplier selection
The factors affecting refractory brick prices are complex. Therefore, when purchasing, one should not simply compare unit prices, but should comprehensively consider the cost-effectiveness.
A professional refractory brick manufacturer should possess advanced production equipment and a strict quality management system to ensure that all product indicators meet industry standards.
High-quality refractory brick manufacturers can usually provide technical consultation, masonry guidance, and after-sales service to help users reduce overall operating costs. In addition, the supplier’s industry experience and reputation are also important reference factors.
Choosing a suitable refractory brick supplier requires attention to both product quality and technical support capabilities. Professional suppliers can recommend suitable products based on kiln operating conditions, thereby achieving long-term stable operation of the kiln.
Henan Ruitai Lianxin Refractory Materials Co., Ltd. has 20 years of experience in refractory material production. We not only provide customers with high-quality refractory bricks that meet our standards, but also offer solutions tailored to specific kiln operating conditions.
Please feel free to contact us if you have any needs. Choosing Ruitai Lianxin means choosing strength.
