Industrial electric heating furnaces – Arc furnace device – Furnace body detail
Patent
1993-12-01
1995-01-10
Reynolds, Bruce A.
Industrial electric heating furnaces
Arc furnace device
Furnace body detail
373 85, 373108, F27D 100
Patent
active
053814410
ABSTRACT:
A direct current arc furnace is described with a cathodic electrode held in the center of the melting vessel and an anodic bottom electrode arrangement in the vicinity of an electrically conductive lower vessel from the vessel wall to the melt. The current supply and removal takes place on one side via leads to a rectifier power supply set up in spaced manner alongside the furnace. The lower vessel is connected in several quadrants with leads and in the vicinity of each quadrant a connecting plate is provided on the furnace wall. Close below the arc the power supplies are led in a horizontal plane to the furnace wall. The current intensity for the quadrants of the lower vessel adjacent to the rectifier power supplies is lower than that of the power supplies to the remaining quadrants. The spacings of the connecting plates for the quadrant areas can be unequal.
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patent: 5138630 (1992-08-01), Suga
patent: 5191592 (1993-03-01), Janiak et al.
patent: 5237585 (1993-08-01), Stenkvist
Deutsche Voest-Alpine Industrieanlagenbau GmbH
Hoang Tu
Reynolds Bruce A.
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