Apparatus and burner for the firing of ceramic articles

A burner for the firing of ceramic articles, which can be installed in an industrial kiln comprising a firing chamber, the burner comprising:

• a mixing body;
• a duct to feed a fuel;
• a duct to feed an oxidizer;
• a spark device to start a combustion;
• a first tubular discharge element, which is configured to be flown through by a fluid flowing out of the mixing body and is provided with a first end, into which at least part of the mixing body is inserted, a second end, which is opposite the first end;
• wherein the burner comprises:
• a second tubular discharge element, which extends from the second end on the opposite side relative to the first end;
• and
• a suction element, which is configured to bring at least part of the gases present inside the firing chamber to the second tubular discharge element and is provided with one or more openings arranged between the first and the second tubular discharge element;
• wherein the burner is configured in such a way that the suction element is configured to be at least partially arranged inside the firing chamber;
• wherein the suction element has a choke arranged in the area of the second end;
• wherein the suction element has at least one segment with the shape of a truncated cone, which is delimited by a larger base and a smaller base;
• and
• wherein the second tubular discharge element has a first open end facing the suction element and a second open end facing the inside of the firing chamber,
• wherein the burner is configured in such a way that the second tubular discharge element is configured to be entirely arranged inside the firing chamber and, is coaxial to the first tubular discharge element, and
• wherein the first tubular discharge element, the second tubular discharge element and the suction element form a combustion block, which has a side surface at least partially without gaps.