A tunnel oven is a type of continuous oven that is typically open on both ends and heated centrally. Building materials, such as bricks, may be passed through the device in an uninterrupted fashion, allowing large volumes to be processed without shutting off the oven between batches.

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Shale, coal gangue, slag and fly ash.

**Technology Parameter of clay brick tunnel oven**
First, one time palletizing and burning tunnel oven are suitable for the soild bricks, hollow bricks and perforated bricks which are made by clay, shale and coal gangue.
Second, main feature: High mechanizatin degree, good conditions for labor, low work hard, need seldom workers, easy to get the planned bricks, same color for the products, the bricks won't be damage, low coal consumption and low cost.
Third, it use the modern tunnel oven technical, make the air in oven distribution more reasonable, not only reduce the coal consumption but also increase the producton. Also make the product same colour and size.
Fourth, use advanced technical to vault.
Fifth, it require the tunnel oven have high producting and running technical, high accuracy to building the oven, high requirements to making the oven car.