A tunnel kiln is a type of industrial furnace used primarily for firing ceramics and bricks. It consists of a long, continuous chamber where products are placed on a conveyor belt and moved through various temperature zones. This design allows for efficient and uniform heating, making it ideal for large-scale production. The process begins with the loading of raw materials, which are then gradually heated to high temperatures. After firing, the finished products exit the kiln at the other end. Tunnel kilns are known for their energy efficiency and ability to produce high-quality items, contributing significantly to the ceramics and construction industries.