Review of electrode quality and of electrode consumption in the arc furnace
The consumption of graphite electrodes in the arc furnace process has been comprehensively studied in three electric steelmaking plants. With regard to the dependence of the tip consumption rate on the operating conditions, an increase with the square of current has been ascertained in all the three plants and for all the electrodes involved. In the first plant, in which heats with nickel contents of up to 100% are made, an additional increase of the tip consumption rate with the nickel content was also established. With regard to the dependence of the side consumption rate on the operating conditions, an increase of the former with the oxygen blowing rate was observed in the third plant, where larger oxygen quantities are injected. The great differences featured both by the measured and the standardised values of specific electrode consumption in the three steelmaking plants are mainly due to the different productivities of the three arc furnaces. These correlations are investigated in the last section of the report. The analysis is based on the formula of B.Bowman for the estimation of electrode consumption, which was confirmed and partially supplemented by the measurements performed.
Bibliographic Reference: EUR 12019 DE (1988) MF, 152 pp., ECU 8, blow-up copy ECU 20
Record Number: 198910720 / Last updated on: 1994-12-01
Original language: de
Available languages: de