Saint Petersburg Mining University, St. Petersburg, Russia:

A. I. Nasifullina, Researcher, Scientific Center “Issues of Processing Mineral and Technogenic Resources”, e-mail: nasifullina.alsu@mail.ru
R. R. Gabdulkhakov, Scientific Researcher, Scientific Center “Issues of Processing Mineral and Technogenic Resources”, e-mail: renat18061995@gmail.com
V. A. Rudko, Cand. Eng., Executive Director of the Scientific Center “Issues of Processing Mineral and Technogenic Resources”, e-mail: rva1993@mail.ru
I. N. Pyagay, Dr. Eng., Senior Researcher, Director of the Scientific Center “Issues of Processing Mineral and Technogenic Resources”, e-mail: igor-pya@yandex.ru

A significant proportion of the entire mass of waste from the oil refining industry is accounted for heavy sour oil residues, and one of the most common solutions in the world is the recycling of these wastes to obtain petroleum cokes. However, the high sulfur content often does not allow to find a qualified application and a market for the obtained sulfide carbon materials. In this work, a review of the scientific and technical literature on the industrial use of petroleum coking additive (PCA) - petroleum coke with a volatile matter yield of 15 to 25%, as a partial replacement for scarce coking coals in the charge in the metallurgical coke production. As a result of the review and analysis of scientific and technical literature, indicators were established that affect the formation of sintering properties of PCA and the boundary conditions for its use as part of a coal charge. It is shown that the use of petroleum coke with a volatile matter yield of less than 15% (wt.) worsens the quality of the obtained metallurgical coke, reducing its strength characteristics CSR and increasing its reactivity CRI, and the introduction into the coal charge from 5 to 50% (wt.) PCA with a content of volatile substances of 15–25% (wt.) provides an improvement in the quality of the resulting metallurgical coke. It is noted that, along with an important indicator, as the yield of volatile substances, which affects the formation of sintering properties of PCA, its group chemical composition, determined by solubility in various solvents (α-, β- and γ-fractions), plays an equally decisive role.
The work was carried out within the framework of the State Assignment of the Ministry of Education and Science of the Russian Federation on NIR 0792-2020-0010 "Development of scientific foundations for innovative technologies for processing heavy hydrocarbon raw materials into environmentally friendly motor fuels and new carbon materials with controlled macro- and microstructural organization of the mesophase."

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