What are the uses of graphite electrode?

What are the uses of graphite electrode

Graphite electrode, mainly used in EAF, LF, Industrial silicon furnace, Yellow phosphorus furnace, corundum furnace for smelting steel, silicon and yellow phosphorus, etc. Due to its Good electrical conductivity, Strong thermal shock resistance and High mechanical strength, graphite electrode is widely used in China and Foreign countries’ plants.

Graphite electrode can be long-time stocked, if it can be kept in correct way. The follow User Manual as follow:

  1. Use special hoist tools to hoist graphite electrode. It is strictly forbid to prize electrode ends up with crowbar. It must be handled with great care during transport to avoid damage.
  2. Graphite electrode must be kept away from being moistened or wet by ram, snow and water, and must be kept dry. It must be dried in the furnace before use. The drying temperature in the furnace shall be less than 120℃.The drying period shall be not less than 48hours.
  3. Not to be stored up near clay and slag etc. to avoid surface pollution and increasing resistivity.
  4. Carefully checking before connection, make sure that the socket and nipple thread is not damaged, nipple pitch plug is in. Nipple screw shall not be damaged during lifting.
  5. Blow the nipple and socket threads clean with compressed air.
  6. Graphite electrode must be connected and contacted closely and straightly. Use moment spanner for connecting electrode with suitable force. The gap between electrode shall be less than 0.4mm.
  7. The holding device must hold the electrode tightly, good contact and no arc. Otherwise, the connecting area will get red, oxidized and thin, leading breakage.
  8. Thread portion of nipple socket shall not be damaged during hoisting by metal plug. Hoisting plug shall spin out and keep nipple socket clean.
  9. Lifting device of electrode must move stably when moving electrode. Carefully check the position of the furnace cover after being repaired. To seal the cover with refractory to prevent up electrode from being oxidized by fire.
  10. The holding device of electrode shall hold the electrode beyond the socket area.
  11. For charging the furnace, the large scrap should be put at the bottom, the small ones on the top, charge material with low electric conductivity shall not been put on the top. In the course of melting, un-melted material shall be taken in time to avoid electrode breaking by falling material.