Long length electrodes
An embodiment disclosed herein includes a monolithic graphite electrode. The electrode has a main body having a length of more than 3050 mm. Another embodiment disclosed herein includes an electrode column comprising a plurality of monolithic graphite electrodes. The column has a length of more than 3050 mm of electrode per joint. A further embodiment discussed herein is the practice of increasing the length of the electrode to minimize the occurrence of an electrode joint in the electrode column for a given length. This practice will improve efficiencies for both electrode manufacturers as well as electric arc furnace operators.
1. An electrode comprising a monolithic cylindrical main body having a first end and a second end and comprised substantially of a baked and graphitized extruded green stock, the first end includes a generally planar end face having a recessed threaded socket and the second end includes an axially extending threaded tapered tang, wherein a length of the electrode comprises more than 3050 mm.
2. The electrode of claim 1 wherein the length comprises more than about 3430 mm.
3. The electrode of claim 1 wherein the length comprises at least about 3680 mm.
4. The electrode of the claim 1 wherein a threads per inch of the tang comprises less than four (4) and a TPI of the socket comprises less than four (4).
5. The electrode of claim 1 wherein a taper of the tang comprises nine (9°) degrees or greater.
6. The electrode of claim 1 wherein a diameter of the main body comprises no more than about 860 mm.
7. The electrode of claim 1 wherein the electrode is a pinless joint electrode.
8. The electrode of claim 1 wherein the threaded socket and the threaded tapered tang have a similar thread pitch.
9. The electrode of claim 1 wherein the threaded socket and the threaded tapered tang have different thread pitches.
10. The electrode of claim 1 wherein the green stock has a diameter of less than 850 mm.
11. The electrode of claim 1 wherein the body has a length of 3050 mm to 3800 mm.