Baffle plates for roller hearth tunnel kilns - for controlling gas flow along ceramic prods. travelling through kiln

摘要

Projecting downwards from the roof of the tunnel is a longitudinal row of transverse baffle plates and a similar row of baffle plates project upwards from the base of the tunnel. The downward projecting plates at least can be adjusted vertically; and the plates are used to control the layer of hog gases flowing along the tunnel and over the roller track carrying the ceramic or refractory prods. being baked. At the end of each portion of the kiln used for a specific stage of the baking process, two pairs of plates are pref. located close together to form a chamber sepg. adjacent kiln sections so that a sudden change of temp. can be achieved. The system is esp. used for mfg. tiles, stove tiles, bricks, etc., where accurate temp. control can be achieved along the kiln and in each temp. zone.