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OwnerHans Ferkel, Markus Reifferscheid +2inventors
InventorsHans Ferkel, Markus Reifferscheid, Thomas Henkel, Ingo Schuster
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The invention relates to an electric arc furnace having a furnace vessel with at least one electrode and a voltage supply connected to the at least one electrode, wherein: the furnace vessel has a lower vessel for receiving a melt and a cover for placing onto the lower vessel; the lower vessel has a tapping channel; and the cover has a retaining means for fastening the at least one electrode; the electric arc furnace is designed to determine a nitrogen content in the melt; and/or the electric arc furnace is designed to reduce the nitrogen content in the melt to less than or equal to 55 ppm, preferably to less than or equal to 45 ppm and particularly preferably to less than or equal to 35 ppm. The invention further relates to an operating method and to a use of an electric arc furnace.
An electric arc furnace (100) having a furnace vessel (105) with at least one electrode (130) and a voltage supply (150) connected to the at least one electrode (130), wherein the furnace vessel (105) has a lower vessel (110) for receptacle of a melt (200) and a cover (120) for fastening onto the lower vessel (110), wherein the lower vessel (110) has a tapping channel (115), and wherein the cover (120) has a holding means (125) for fastening the at least one electrode (130),
The electric arc furnace (100) according to any of the preceding claims, characterized in that the electric arc furnace (100) has an apparatus for the insertion of oxygen (160).
The electric arc furnace (100) according to any of the preceding claims, characterized in that the electric arc furnace (100) is configured to remove nitrogen in a gas phase.
The electric arc furnace (100) according to any of the preceding claims, characterized in that the voltage supply (150) has a control which is operatively connected to the temperature of the melt (200).
Dependencies are inferred from the claim text.