Philips 66 needle coke

Needle coke is a raw material used for the manufacture of ultra-reliable graphite electrodes that have the necessary properties such as low thermal expansion coefficient, high electrical conductivity, high specific gravity, high mechanical strength, high graphite content and low levels of sulfur, nitrogen and ash, and operating at high specific current loads (up to 35 A/cm2).

Needle coke has such name because it has elongated structures similar to thick needles or sintered fibers.

This type of coke differs significantly from ordinary electrode coke by its distinct fiber anisotropy, low content of hetero-impurities, high specific density, good graphitizability, higher heat resistance, and significantly reduces the consumption of electrodes per ton of steel made.

Production and application of needle coke:

The electrodes made of needle coke are used in metallurgy in the production - smelting of special steel types in electric arc furnaces

Needle coke is produced in delayed coking units from low-sulfur aromatized thermal cracking distillate residues, catalytic cracking gas oils, oil extracts or hydrocarbon pyrolysis heavy tar