Process and apparatus for melting a furnace charge
AssigneeL'Air Liquide, Societe Anonyme pour Etude et l'Exploitation des Procedes
InventorsDominique Jouvaud, Nicolas Perrin
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Abstract
Process for melting a furnace charge, with post-combustion of the smokes by njecting an oxygenated gas in the furnace atmosphere as a series of jets flowing according to a tangential component in the space between electrodes and cylindrical furnace partition of the furnace, in a direction of injection so as to produce a rotary gas current about the vertical axis of the furnace and preferably in at least two series as two stepped levels to produce gas currents which rotate in opposite directions. Applications to electrical furnaces for the production of steel or ferro-alloys.
Claims16
A process for melting a charge and post-combusting smokes in a furnace having a hearth containing the charge and a vault, in which a space having a vertical axis exists inside said furnace above the charge, the process comprising the steps of injecting in at least one horizontal plane of the space an oxygen-containing gas by way of at least first and second jets, each of said jets having at least one substantially tangential component with respect to the vertical axis, the first and second jets being oriented in opposite directions and being angularly spaced relative to the vertical axis.
A furnace for melting a charge and post-combusting melting smokes, comprising a hearth for containing the charge and a vault, in which a substantially closed space having a vertical axis exists inside said furnace above the charge, and at least first and second injectors for introducing jets of an oxygen-containing gas in at least one horizontal plane of the space, the injectors being oriented so that the jets each have at least one substantially tangential component relative to the vertical axis, the first and second injectors being oriented in opposite directions and being angularly spaced relative to the vertical axis.
Dependencies are inferred from the claim text.