Title:
【発明の名称】鋼を製造する直流アーク炉及びこれに対する方法
Document Type and Number:
Japanese Patent JP2002526739
Kind Code:
A
Abstract:
A direct-current arc furnace for producing steel has a smelting vessel with electrodes, tapping openings for the molten mass and slag, and a device for a direct removal of exhaust gases. The smelting vessel is extended upwardly by a central shaft for introducing melt-down material into the vessel. The extension of the central shaft forms a melt-down material column. A shaft suction device is provided as an extension of the shaft for removal of the exhaust gases during the smelting process. Adjacent to the shaft openings are provided in the upper part of the smelting vessel for receiving a vessel suction device for dust and/or gases resulting during the charging process of the melt-down material. The shaft suction device and the vessel suction device are connected to a common device and switching elements are provided for actuating only one suction device and/or adjusting a combination of the exhaust gas flows dependent on the charging and smelting process.
More Like This:
Inventors:
Prestinig Fritz-Peter
Woo Wei-Ping
Woo Wei-Ping
Application Number:
JP2000574742A
Publication Date:
August 20, 2002
Filing Date:
September 22, 1999
Export Citation:
Assignee:
SMS Demark Actien Gezel Shaft
International Classes:
C21B13/02; C21B13/12; C21C5/52; C21C5/56; F27B3/04; F27B3/08; H05B7/18; F27B3/18; F27B3/26; F27D11/08; F27D11/10; F27D13/00; F27D17/00; (IPC1-7): F27B3/08; C21C5/52; F27B3/04; F27D11/08; F27D11/10; H05B7/18
Attorney, Agent or Firm:
Mitsufumi Ezaki (3 others)