INERT GAS BLANKETING OF ELECTRODES IN AN ELECTRIC ARC FURNACE
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United States of America Patent
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Mar 25, 2016
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Mar 25, 2016
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Abstract
A method for providing a region of inert gas around the electrodes in an electric arc furnace is provided. This electric arc furnace includes consumable graphite electrodes, a melting zone, and at least one lance including an inlet and an outlet, wherein the inlet is connected to a liquid inert fluid source. The method includes introducing the consumable graphite electrodes into the melting zone, wherein the distal ends of the electrodes form arcs with a solid charge of scrap metal. The method also includes introducing the liquid inert fluid into the inlet end of the at least one lance, wherein the inert fluid exits the outlet end and is introduced into the melting zone proximate to the distal ends of the electrodes, thereby providing an inert gaseous blanket, once the liquid vaporizes, around the distal ends of the electrodes
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