Graphite Electrode
Definition of raw materials graphite electrode
Graphite electrode is high temperature resistant graphite conductive material. It is made of petroleum coke and pitch coke as aggregate and coal tar pitch as binder. The production process for metal making graphite electrodeincludes Calcining, crushing ,screening,burdening, kneading, forming, baking, impregnation, graphitization and mechanical processing. The main raw material of graphite electrode for steelmaking furnaceproduction is petroleum coke, Coal tar pitch and Needle coke. The sulphur content of petroleum coke and pitch coke can not exceed 0.5%.
Types of electrode graphite
Steel making uhp graphite electrodesare divided into 4 Types: RP Graphite electrodes, HP Graphite electrodes, SHP Graphite electrodes, UHP Graphite electrodes. Steel making graphite electrodeshas strong electrical conductivity and can produce high heat for a long time, so it is mainly used in producing electric arc furnace steel, and can also be used in steel refining and other smelting processes.
Graphite electrodes use
Why is graphite electrodes cokegraphite tip sharp?
The contact between the material and point is small so that the current resistance is bigger, which allows it to reach higher temperature. If it is too thick, the heat can easily transfer from the tip to the soldering iron, and a large part of the heat will dissipate without reaching the required temperature. The soldering iron works only when most of the energy is concentrated on the point to be welded.
Main ingredient of UHP graphite electrode- Needle coke
Needle coke, also called acicular coke, is a highly crystalline petroleum coke used in the production of electrodes for the steel and aluminium industries and is particularly valuable because the electrodes must be replaced regularly. Needle coke is produced exclusively from either FCC decant oil or coal tar pitch.It is needed in the production of high-power or ultra-high-power graphite electrodes.Needle coke is an important standard to distinguish regular power graphite electrodes from high power and ultra-high-power graphite electrodes.
Application of graphite electrode
Graphite electrodes are used in electric arc furnace (EAF) and ladle furnace (LF) for steel production, ferroalloy production, silicon metal production and smelting processes.Electric arc furnace steelmaking is a major user of graphite electrodes. The output of EAF steel in China accounts for about 18% of the output of crude steel, and graphite electrodes for steelmaking account for 70%-80% of the total amount of graphite electrodes. Electric furnace steelmaking is to use graphite electrode to introduce current into the furnace, and use the high temperature heat produced by arc between the end of the electrode and the charge to smelt .
In addition to excellent mechanical strength, thermal expansion, thermal shock resistance and machinability, the high temperature helps in reducing the entire mass of steel.Growing demand for steel in construction, oil & gas, and automotive industries is expected to boost the graphite electrode market.
The main products offered by HUARUOinclude caron products such as graphite electrode and anode carbon block, various grade of iron ore sponge iron (DRI), HBI slab, steel sheet, HRC, CRC, Pickled coils and sheet. We are your first choice for suppliers of carbon products and steel products.
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