METALLURGICAL FURNACE FOR PRODUCING METAL ALLOYS

The present invention relates to metallurgical processes and equipment and, more particularly, to a metallurgical furnace that is capable of operating with a wide range of raw materials and fuels, including those containing high levels of impurities. To that end, the metallurgical furnace of the pre...

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Main Authors FERREIRA, FILHO, HERMES JOAQUIM, MAIA, LUCIANO AUGUSTO, MORAIS, LOVATI, KLEITON, GONÇALVES, DA SILVA, GEOVANE, VITURINO, DA LUZ, ANDRÉ, SILVA, OKADA, JUNIOR, ROBERTO
Format Patent
LanguageEnglish
French
Portuguese
Published 23.06.2016
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Abstract The present invention relates to metallurgical processes and equipment and, more particularly, to a metallurgical furnace that is capable of operating with a wide range of raw materials and fuels, including those containing high levels of impurities. To that end, the metallurgical furnace of the present invention comprises (i) at least one upper vessel (1), (ii) at least one lower vessel (2), (iii) at least one fuel feeder (5) positioned substantially between the at least one upper vessel (1) and the at least one lower vessel (2), (iv) at least one row of tuyeres (3, 4) positioned in at least one of the at least one upper vessel (1) and the at least one lower vessel (2), said at least one row of tuyeres (3, 4) placing the interior of the furnace in fluid communication with the external environment, and (v) at least one hood called a curtain wall located in the upper vessel, which extends longitudinally down the furnace, and (vi) at least one permeabilizing fuel loading system in the centre of the upper vessel called a booster loading system. Use of the booster loading system (8) along with the curtain wall (6) allows channelling the gas generated during combustion of the fuel in the lower vessel (2) with the air blown in through the primary tuyeres (3) and secondary tuyeres (4), controlling the distribution of gas in the furnace more efficiently. La présente invention concerne des procédés et des équipements métallurgiques et, plus particulièrement, un four métallurgique capable de fonctionner avec une vaste gamme de matières premières et des combustibles, y compris ceux présentant de hautes teneurs en impuretés. À cet effet, le four métallurgique de la présente invention comprend (i) au moins une cuve supérieure (1), (ii) au moins une cuve inférieure (2), (iii) au moins un dispositif d'alimentation en combustible (5) situé sensiblement entre ladite au moins une cuve supérieure (1) et ladite au moins une cuve inférieure (2), (iv) au moins une rangée de valves (3, 4) positionnée sur ladite au moins une cuve supérieure (1) et/ou ladite au moins une cuve inférieure (2), ladite au moins une rangée de valves (3, 4) assurant une communication fluidique entre l'intérieur du four et l'environnement extérieur, et (v) au moins un système de canalisation appelé Curtain Wall situé au niveau de la cuve supérieure et s'étendant le long du four, et (vi) au moins un système de charge en combustible de perméabilisation au centre de la cuve supérieure, appelé système de charge booster. L'utilisation du système de charge booster (8), conjointement avec le système Curtain Wall (6), permet une canalisation du gaz produit lors de la combustion du combustible de la cuve inférieure (2) avec l'air insufflé par l'intermédiaire des valves primaires (3) et des valves secondaires (4), ce qui permet de réguler plus efficacement la distribution gazeuse dans le four. A presente invenção está relacionada a processos e equipamentos metalúrgicos e, mais particularmente, a um forno metalúrgico capaz de operar com uma ampla gama de matérias-primas e combustíveis, incluindo aqueles com altos níveis de impurezas. Para tal, o forno metalúrgico da presente invenção compreende (i) pelo menos uma cuba superior (1), (ii) pelo menos uma cuba inferior (2), (iii) pelo menos um alimentador de combustível (5) posicionado substancialmente entre a pelo menos uma cuba superior (1) e a pelo menos uma cuba inferior (2), (iv) pelo menos uma fileira de ventaneiras (3, 4) posicionada em pelo menos um de pelo menos uma cuba superior (1) e pelo menos uma cuba inferior (2), a pelo menos uma fileira de ventaneiras (3, 4) comunicando de maneira fluida o interior do forno com o ambiente externo, e (v) pelo menos uma coifa chamada de Curtain Wall localizada na cuba superior que se estende longitudinalmente pelo forno, e (vi) pelo menos um sistema de carregamento de combustível permeabilizador no centro da cuba superior chamado de sistema de carregamento de booster. A utilização do sistema de carregamento booster (8) juntamente com o Curtain Wall (6) possibilita uma canalização do gás gerado na combustão do combustível da cuba inferior (2) com o ar insuflado pelas ventaneiras primarias (3) e ventaneiras secundarias (4), controlando com maior eficiência a distribuição gasosa no forno.
AbstractList The present invention relates to metallurgical processes and equipment and, more particularly, to a metallurgical furnace that is capable of operating with a wide range of raw materials and fuels, including those containing high levels of impurities. To that end, the metallurgical furnace of the present invention comprises (i) at least one upper vessel (1), (ii) at least one lower vessel (2), (iii) at least one fuel feeder (5) positioned substantially between the at least one upper vessel (1) and the at least one lower vessel (2), (iv) at least one row of tuyeres (3, 4) positioned in at least one of the at least one upper vessel (1) and the at least one lower vessel (2), said at least one row of tuyeres (3, 4) placing the interior of the furnace in fluid communication with the external environment, and (v) at least one hood called a curtain wall located in the upper vessel, which extends longitudinally down the furnace, and (vi) at least one permeabilizing fuel loading system in the centre of the upper vessel called a booster loading system. Use of the booster loading system (8) along with the curtain wall (6) allows channelling the gas generated during combustion of the fuel in the lower vessel (2) with the air blown in through the primary tuyeres (3) and secondary tuyeres (4), controlling the distribution of gas in the furnace more efficiently. La présente invention concerne des procédés et des équipements métallurgiques et, plus particulièrement, un four métallurgique capable de fonctionner avec une vaste gamme de matières premières et des combustibles, y compris ceux présentant de hautes teneurs en impuretés. À cet effet, le four métallurgique de la présente invention comprend (i) au moins une cuve supérieure (1), (ii) au moins une cuve inférieure (2), (iii) au moins un dispositif d'alimentation en combustible (5) situé sensiblement entre ladite au moins une cuve supérieure (1) et ladite au moins une cuve inférieure (2), (iv) au moins une rangée de valves (3, 4) positionnée sur ladite au moins une cuve supérieure (1) et/ou ladite au moins une cuve inférieure (2), ladite au moins une rangée de valves (3, 4) assurant une communication fluidique entre l'intérieur du four et l'environnement extérieur, et (v) au moins un système de canalisation appelé Curtain Wall situé au niveau de la cuve supérieure et s'étendant le long du four, et (vi) au moins un système de charge en combustible de perméabilisation au centre de la cuve supérieure, appelé système de charge booster. L'utilisation du système de charge booster (8), conjointement avec le système Curtain Wall (6), permet une canalisation du gaz produit lors de la combustion du combustible de la cuve inférieure (2) avec l'air insufflé par l'intermédiaire des valves primaires (3) et des valves secondaires (4), ce qui permet de réguler plus efficacement la distribution gazeuse dans le four. A presente invenção está relacionada a processos e equipamentos metalúrgicos e, mais particularmente, a um forno metalúrgico capaz de operar com uma ampla gama de matérias-primas e combustíveis, incluindo aqueles com altos níveis de impurezas. Para tal, o forno metalúrgico da presente invenção compreende (i) pelo menos uma cuba superior (1), (ii) pelo menos uma cuba inferior (2), (iii) pelo menos um alimentador de combustível (5) posicionado substancialmente entre a pelo menos uma cuba superior (1) e a pelo menos uma cuba inferior (2), (iv) pelo menos uma fileira de ventaneiras (3, 4) posicionada em pelo menos um de pelo menos uma cuba superior (1) e pelo menos uma cuba inferior (2), a pelo menos uma fileira de ventaneiras (3, 4) comunicando de maneira fluida o interior do forno com o ambiente externo, e (v) pelo menos uma coifa chamada de Curtain Wall localizada na cuba superior que se estende longitudinalmente pelo forno, e (vi) pelo menos um sistema de carregamento de combustível permeabilizador no centro da cuba superior chamado de sistema de carregamento de booster. A utilização do sistema de carregamento booster (8) juntamente com o Curtain Wall (6) possibilita uma canalização do gás gerado na combustão do combustível da cuba inferior (2) com o ar insuflado pelas ventaneiras primarias (3) e ventaneiras secundarias (4), controlando com maior eficiência a distribuição gasosa no forno.
Author MAIA, LUCIANO AUGUSTO, MORAIS
OKADA, JUNIOR, ROBERTO
DA SILVA, GEOVANE, VITURINO
FERREIRA, FILHO, HERMES JOAQUIM
LOVATI, KLEITON, GONÇALVES
DA LUZ, ANDRÉ, SILVA
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– fullname: DA SILVA, GEOVANE, VITURINO
– fullname: DA LUZ, ANDRÉ, SILVA
– fullname: OKADA, JUNIOR, ROBERTO
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DocumentTitleAlternate FOUR MÉTALLURGIQUE POUR L'OBTENTION D'ALLIAGES MÉTALLIQUES
FORNO METALÚRGICO DE OBTENÇÃO DE LIGAS METÁLICAS
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Snippet The present invention relates to metallurgical processes and equipment and, more particularly, to a metallurgical furnace that is capable of operating with a...
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SubjectTerms 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
Title METALLURGICAL FURNACE FOR PRODUCING METAL ALLOYS
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