For the purpose of reducing electrode consumption and improving production efficiency, we should make furnace capacity, transformer capacity and graphite electrode match with each other in a reasonable proportion, the following chart shows the relation among them for your reference.
Furnace | Transformer Capacity(MVA) | Graphitge Electrode Diameter(mm) | |||
Capacity(t) | Diameter(m) | RP | HP | UHP | |
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 |
In practice, there are typically DC furnaces, AC furnaces and Ladle furnaces below.
For DC Furnaces (direct current furnaces) / Size: 550-800mm
DC furnaces require 1 column of graphite electrodes. High maximum current density. The diameter of these electrodes is getting bigger: the current maximum diameter is 800mm.
For AC Furnaces (alternating current furnaces) / Size: 400-700mm.
Alternating current furnaces, the most common, require 3 columns of graphite electrodes with diameter ranging from 400 to 700mm.
For LF Furnaces (refining furnaces) / Size: 250-450mm
This kind of furnace is fit for refining materials like molten steel. LF Furnaces have a smaller capacity than DC type. The graphite electrode diameter is normally 250-450mm.
