Mar . 27, 2024 14:07 Back to list
UHP Graphite Electrode
UHP graphite electrode are mostly made of 100% high-specification needle coke. Compared with HP and RP grades, UHP electrode requires highest technical expertise in each of the main process steps in making them, particularly baking, extrusion and graphitizing.
The electrodes come with a wide range of sizes, but diameter of 600mm and 700mm high performance. UHP graphite electrode is often used for ultra high power electric arc furnaces (EAF) with current density greater than 25 A/cm2.
The length of EAF graphite electrodes can be up to 2900mm. They are usually packed with pre-set graphite nipple, which allows one electrode to be joined together with another. In an EAF, three electrodes are often joined together to form a column, with new electrodes added to the top of a column as electrodes are consumed upwards from the tip. In a DC furnace, one column is used, but in an AC furnace three columns are used simultaneously.
The rate at which UHP graphite electrodes are consumed in an EAF depends on the steelmaking or other raw materials used, the grades of steel being produced, and the amount of supplemental (chemical) energy used. EAFs typically consume electrodes at a rate of around 2 kg per tonne of steel produced, with some specialty steel applications consuming at a slightly higher rate.
Hgraphite’s focus is being a very good partner with the steel industry and to foster long-term relationships with clients, delivering products to customers when and where they want them at a fair price.
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