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US 2004/0247012 A1Published application
Replacement method and device for assembling and disassembling modules of an electric arc furnace
OwnerManfred Schubertinventor
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OwnerManfred Schubertinventor
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The invention concerns a replacement method and a device for assembling and disassembling modules of an electric arc furnace. Said method consists in lifting and pivoting the furnace cover or in only lifting it; when disassembling, it consists in removing the agent and power supply ducts as well as the instrument leads of the upper container (3) and/or of the lower container (2) and, after assembling in connecting them. The invention aims at enabling use of a low-power load crane and in significantly reducing replacement time. Therefor, once the lower container has been detached (2), the upper container (3) remains in its position, or once the energy agent supply ducts and the instrument leads have been detached, the upper container is lifted and detached by the loading crane. The lower container (2) is lifted then lowered and removed by a transport carriage (6) and, after the lower container has been replaced and introduced (2), the upper container (3) and the lower container (2) are once more connected, the agent and power supply ducts and the instrument leads previously detached are connected once more.
Method for disassembling or assembling structural components of an electric arc furnace, in which the furnace cover is lifted and swung out or is only lifted, and in which the media and power supply lines and the instrument leads are disconnected from the upper vessel and/or the lower vessel during the disassembly and reconnected after the assembly, wherein, after it has been separated from the lower vessel (2), the upper vessel (3) either remains in its position or, after disconnection of the media and power supply lines and instrument leads, is lifted by tilting and moved out by the charging crane;
Changing device for the disassembly or assembly of structural components of an electric arc furnace, with a boom for the furnace cover and cradles for the tiltable furnace shell, which move with rolling contact on a bearing surface, and with means for moving out a vessel structural component, wherein the furnace shell (13) can be set in disassembly or assembly positions by means of a tilting cylinder-piston unit (4), which acts on a tilting frame (1), and/or by means of vessel lifting devices (7), which are distributed around the periphery of the furnace shell (13) and can be joined with or detached from the lower vessel (2) and/or the upper vessel (3).
Dependencies are inferred from the claim text.