Researching of physicochemical properties of the special coke of «ShubarkolKomir» JSC

Abstract

One of the priority directions in the Republic of Kazakhstan is the production of low-sulfur coke with sulfur content up to 1 % and needle coke used in the electrode industry, which is fully purchased by import. Needle coke is used to produce high-quality graphite electrodes needed for the steel industry. Electrodes should have high mechanical strength, electrical conductivity, and low sulfur content. The primary raw material for obtaining diesel fuel and needle coke is the primary coal tar produced at ShubarkolKomir JSC. At present, the obtained products are not processed into valuable chemical substances and motor fuels on the territory of the Republic of Kazakhstan. The physicochemical properties of trademarks 0–10, 10–25, 25–40, 0–60, 10–60, 0–25 mm produced at ShubarkolKomir JSC have been investigated: coke properties by particle size classes — elemental composition of organic part and ash residue, coke ash, specific and apparent density of the samples, porosity of coke samples with subdivision into macro-, meso- and micropores. The chemical composition of coke is determined by technical analysis (moisture, ash content, sulfur content, phosphorus content, volatile matter yield) and elemental analysis (carbon, hydrogen, oxygen, nitrogen, etc.) content.