Title:
DIRECT CURRENT ARC FURNACE AND METHOD FOR ITS OPERATION
Document Type and Number:
Japanese Patent JP3209845
Kind Code:
B2
Abstract:
PURPOSE: To equalize the abrasion of the refractory lining of a DC arc furnace by retaining a cathodic electrode at the center of the furnace on one hand, and arranging an anodic bottom electrode device leading from a container wall to the melt at a plurality of quadrants, in the vicinity of a conductive lower container on the other.
CONSTITUTION: This DC arc furnace comprises a lower container 5 and an upper container 18 insulated from this by an insulator 7, and it is lined with a refractory lining 2. Moreover, a graphite electrode projects vertically to the center of the furnace through a cover by a method where it is displaceable, and this forms a cathode 1 for DC arc, and arc 8 is generated to fuse the melt 3 by applying a current to this cathode 1 and an anode plate 10 buried in the lining 2. The furnace wall 21 of the lower container 5 is provided with a connecting plate for a current lead wire at four quadrants (I-IV), each connecting plate is connected to the anode plate 10 through the bottom 20 consisting of a steel plate, and a current is applied to it through each lead wire by a rectifier power supply source.
Inventors:
Etgal Nix
Application Number:
JP30416993A
Publication Date:
September 17, 2001
Filing Date:
December 03, 1993
Export Citation:
Assignee:
Forest-Arpine Industry Unragenbau Gesellschaft Mitt Beschlenktel Haftung
International Classes:
C21C5/52; F27B3/08; F27D11/08; H05B7/06; H05B7/11; H05B7/18; (IPC1-7): F27B3/08; F27D11/08; H05B7/18
Domestic Patent References:
| JP3221781A | ||||
| JP4217782A | ||||
| JP2302581A |
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)