Arc furnace electrode control

Details Arc furnace electrode control Arc furnace electrode control

F - Mech Eng,Light,Heat,Weapons

27

B

F27B 3/28 (2006.01) C21C 5/52 (2006.01) F27B 3/08 (2006.01) F27D 21/00 (2006.01) H02J 3/18 (2006.01) H05B 7/148 (2006.01)

Patent

CA 2059062

System for controlling the positions of each of the three electrodes of a three phase electric furnace to maintain optimum real power delivered to the furnace in the event of electrode short circuiting or arc extinction due to scrap movement in the furnace. The system includes means for determining the magnitude of arc voltage and arc current and means to change the position of selected electrodes when either arc voltage or arc current is determined to be zero.

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