METALLURGISK OVN TIL FREMBRINGELSE AF METALLEGERINGER

• Main Authors: FERREIRA, FILHO, Hermes Joaquim, LOVATI, Kleiton, Gonçalves, DA LUZ, André, Silva, DA SILVA, Geovane, Viturino, OKADA, JUNIOR, Roberto, MAIA, Luciano Augusto, Morais
• Format: Patent
• Language: Danish
• Published: 11.03.2024
• Subjects: BLASTING; CHEMISTRY; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; HEATING; KILNS; LIGHTING; MANUFACTURE OF IRON OR STEEL; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OPEN SINTERING OR LIKE APPARATUS; OVENS; RETORTS; WEAPONS

The instant invention relates to metallurgical processes and apparatuses and, more particularly, to a metallurgical furnace capable of operating with a wide range of feedstocks and fuels, including those with high levels of impurities. To this end, the metallurgical furnace of the instant invention comprises (i) at least one upper stack (1), (ii) at least one lower stack (2), (iii) at least one fuel feeder (5) positioned substantially between at least one upper stack (1) and the at least one lower stack (2), and (iv) at least one row of tuyeres (3, 4) positioned in at least one of the at least one upper stack (1) and at least one lower stack (2), the at least one row of tuyeres (3, 4) providing a fluid communication between the inside of the furnace and the external environment, (v) at least one hood, called Curtain Wall, located in the upper stack extending longitudinally through the furnace, and (vi) the at least one permeabilizing fuel charging system in the center of the upper stack called the booster charging system. The use of the booster charging system (8) together with the curtain wall (6) enables a channeling of the gas generated in the combustion of the fuel from the lower stack (2) with the air blown by the primary tuyeres (3) and secondary tuyeres (4), more efficiently controlling the gas distribution in the furnace.