Internal firing assembly tunnel kiln

Equipment Introduction:

A tunnel kiln is a continuous firing device widely used in the ceramics, brick, and glass industries. It is named for its unique elongated structure and continuous production method.
The design of a tunnel kiln allows green bricks or other ceramic products to move slowly through the kiln, passing through different temperature zones to complete the firing process.
Typically the cross section width is 2.5m, 3.6m, 4.8m, 6.9m, 9m. The top generally adopts masonry type suspended roof with refractory bricks and splicing type hanging structure with aluminum silicate fiber modules. The length of kiln cart is matched according to the product

Working Principle of Tunnel Kilns:
1. The working principle of a tunnel kiln is based on a continuous production mode.
2. Green bricks are placed on kiln cars, which enter the kiln body via tracks or rollers.
3. The green bricks are gradually heated in the preheating zone to remove excess moisture, and the exhaust gases from the kiln can be recirculated to improve thermal efficiency.
4. The green bricks reach the highest temperature in the firing zone and complete the sintering process.
5. The fired bricks are gradually cooled in the cooling zone to a temperature suitable for unloading.
6. Kiln cars move continuously through the kiln, with new green bricks entering and fired bricks being unloaded, achieving continuous production.

Maintenance and Care of Tunnel Kilns:
To ensure the efficient operation and long service life of tunnel kilns, regular maintenance and care are necessary:
1. Regularly inspect the kiln body for cracks, deformations, or other damage, and repair them in a timely manner.
2. Clean the combustion system regularly, including burners and fuel supply systems, to ensure complete combustion.
3. Ensure that the ventilation ducts are unobstructed and check the normal operation of fans.
4. Inspect the operation of the drive system, including motors, chains, or roller drives, and lubricate and replace worn parts in a timely manner.
5. Regularly calibrate temperature sensors and control systems to ensure accurate temperature control.

Applications of Tunnel Kilns:
Tunnel kilns are widely used in the following fields:
1. Ceramics industry: For firing ceramic products such as tiles and sanitary ware.
2. Brick and tile industry: For firing clay bricks, cement bricks, etc.
3. Glass industry: For firing and annealing glass products.
4. Refractory materials industry: For firing refractory bricks and other refractory materials.