Tunnel kiln and burner for firing bricks

摘要

The present invention relates to a tunnel kiln (1) for firing ceramic articles, preferably bricks. Such kiln comprises a kiln wall (2) which defines a containment chamber (4) of at least one ceramic article and a plurality of burners (6', 6", 8) distanced along the kiln wall (2) to heat said chamber (4) so as to promote firing of the ceramic article, wherein the chamber (4) is suitable for receiving at least partially unburned gaseous products from the burners (6', 6", 8) and/or from the ceramic product. The kiln further comprises oxidant supplying means (10, 12), preferably supplying air, to the plurality of burners (6', 6", 8), and suction means (14) suitable for withdrawing a portion of the gaseous products from the containment chamber (4). The suction means (14) are fluidically connected to the oxidant supplying means (10, 12) so that the portion of gaseous products feeds at least one (6', 6") of said burners (6', 6", 8). The present invention also relates to a burner (6', 6"), preferably usable in the aforesaid kiln (1).