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Choose Appropriate Graphite Electrodes For Electric Arc Furnaces

Electrode oxidation, sublimation, dissolution, spalling and breaking are all related to the cost of EAF steelmaking. Proper graphite electrode selection, use and maintenance can effectively reduce electrode consumption.

Below chart is the matching relationship between electric furnace capacity, transformer power load and electrode size.

Furnace Capacity	Inner Dia.	Transformer Capacity (MVA)			Electrode Dia.
t	m	RP	HP	UHP	mm
10	3.35	5	7.5	10	300/350
15	3.65	6	10	12	350
20	3.95	7.5	12	15	350/400
25	4.3	10	15	18	400
30	4.6	12	18	22	400/450
40	4.9	15	22	27	450
50	5.2	18	25	30	450
60	5.5	20	27	35	500
70	6.8	22	30	40	500
80	6.1	25	35	45	500
100	6.4	27	40	50	500
120	6.7	30	45	60	550/600
150	7	35	50	70	600
170	7.3	-	60	80	600
200	7.6	-	70	100	600/700
250	8.2	-	-	120	700
300	8.8	-	-	150	700