Graphite electrode is usually used as conductor of electric arc furnace, electric arc generated between graphite electrode and bottom electrode can heat and melt furnace material. According to the rate power, graphite electrodes can be divided into regular power (RP) graphite electrode, high power (HP) graphite electrode, ultra high power (UHP) graphite electrode.
The main raw material of graphite electrode is petrol coke, in regular power graphite electrode, a little amount of pitch coke can be added into the raw material. Both petrol coke and pitch coke should contain no more than 0.5% of sulfur. During producing HP graphite electrode and UHP graphite electrode, needle shape coke should be added into raw material. Petrol coke is the main material for the production of aluminum industry graphite anode, and its sulfur content should not exceed 1.5%~2%.
It is the best electrode material for electric arc furnace steelmaking.
High sublimation point, excellent electric conductivity, high mechanical strength.
Produces CO and CO2 gases when oxidized, won’t contaminate steel.
The density can be adjusted to obtain the best thermal shock resistance.
Low price, easy to process, is the ideal industrial material.
|Items||Classification||Unit||Nominal Diameter (mm)|
|HP Graphite Electrode|
|Nominal diameter||Permissible current power||The current density (A / cm2)|
|Millimeter (mm)||Inch (inch)|
|Nominal diameter||Actual diameter||Nominal length||tolerance|
|Millimeters (mm)||Inch (inch)||Max. (Max.)||Min (min)||mm||Length||the maximum|
|300||12||307||302||1600 1800||± 100||-100||-275|
The main application of HP graphite electrode is electric furnace steelmaking mill, which consumes about 70~80% of graphite electrode. HP graphite electrode are suitable for EAF furnaces with 18~25A/cm2 current intensity. Meanwhile, HP graphite electrode is also used in ore electric furnaces which are used for making industrial silicon and yellow phosphorous. HP graphite electrodes are also used in resistances such as graphitization furnace for producing graphite products, glass melting furnace and electric furnace for producing silicon carbide.