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Casting and Foundry Production
ArticleName Systematization of properties and parameters of foundry coke. Part 2. Physical properties
ArticleAuthor V. A. Ivanova, E. O. Pobegalova

Yaroslavl State Technical University (Yaroslavl, Russia):

V. A. Ivanova, Dr. Eng., Associate Prof., Head of the Chair “Technology of materials, standardization and metrology”, e-mail:
E. O. Pobegalova, Senior Lecturer, e-mail:


Foundry coke is a fuel in production of cast iron in cupola furnaces. Despite the fact that, as a rule, the supplied foundry coke meets the requirements of GOST 3340–88, consumers are not satisfied with its quality. Moreover, there is some ambiguity in the use of “property” and “parameter” conceptions. In this regard, the concept of establishing requirements for the quality of foundry coke using standardization methods has been proposed. In the framework of this concept, at the first stage, it is planned to streamline the terms and their defi nitions in the field of foundry coke, as well as systematize its properties and parameters. The systematization of properties consists in their reasonable classification. To classify the properties and parameters of foundry coke, a hierarchical classification method was used, according to which simple and complex properties of the object were distinguished. The main classification feature is the nature of the properties manifestation. Enlarged groups of complex properties, which include physical, chemical and physical-chemical properties, are at the upper levels of the hierarchical structure. Physical properties include gas permeability, humidity, fracture, density, porosity. In turn, bulk density and bulk weight, particle size distribution and its uniformity, average piece size, porosity, hydraulic criterion and hydraulic resistance are parameters characterizing gas permeability. If one considers physical properties as the specific behavior of the body under the influence of certain forces and fields, then this group can include mechanical, thermal and electromagnetic properties. The mechanical properties of foundry coke include hardness and strength, which are a complex property. Depending on the nature of the load acting on foundry coke during the testing process, we can distinguish: strength under complex loading, strength under dynamic loads, and high-temperature strength. The thermal properties of foundry coke include thermal conductivity and heat resistance, and electromagnetic properties include electrical resistance. Further selection of properties and parameters will allow establishing a list of quality indicators of foundry coke, as well as optimizing the values of these indicators.
Tsindrakova T. V., Kalabin S. V., Komelskikh S. G. (JSC Pervouralsk New Tube (Novotrubny) Works) took part in the work.

keywords Foundry coke, cupola, quality, methodology, quality requirements, classification, systematization, property, parameter

1. Dibrov I. А. State and promising directions of development of foundry in Russia. Works of the XII Congress of foundry workers of Russia. Nizhnyi Novgorod: NGTU im. R. E. Alekseeva, 2015. pp. 3–14.
2. GOST 3340–88. Hard coal foundry coke. Specification. Introduced: 01.01.1990.
3. Northa L., Blackmoreb K., Nesbittb K., Mahoneya M. Methods of coke quality prediction: A review. Fuel. 2018. Vol. 219. pp. 426–445.
4. Wałowski G. Assessment of coke quality related to of effective permeability coefficient and anisotropy coefficient. Fuel. 2019. Vol. 236. P. 82–91.
5. Rantitsch G., Bhattacharyya A., Schenk J., Lunsdorf N. K. Assessing the quality of metallurgical coke by Raman spectroscopy. Intern. Journal of Coal Geology. 2014. Vol. 130. pp. 1–7.
6. Ivanova V. A., Yablonsky О. P. Research on determination of foundry coke quality characteristics. Vestnik Rybinskogo gosudarstvennoy aviatsionnoy tekhnologicheskoy akademii im. P. A. Soloveva. 2011. No. 3(21). pp. 169–174.
7. Ivanova V. А. Quality of foundry coke: monograph. Yaroslavl: izdatelstvo YaGTU, 2014. 143 p.
8. Ivanova V. А., Pobegalova Е. О. Systematization of foundry coke properties and parameters. Part 1. Chemical and physic-chemical properties. Chernye Metally. 2019. No. 8. pp. 4–9.
9. Agroskin А. А. Chemistry and technology of coal. Moscow: Nedra, 1969. 240 p.
10. Muchnik D. А., Babanin V. I. Possibilities for improvement of coke quality beyond a furnace chamber. Moscow: Infra-Inzheneriya, 2014. 368 p.
11. Syskov К. I. Theory of coke behavior in blast furnace process. Moscow: Izdatelstvo AN SSSR. 1949. 200 p.
12. GOST R 54251–2010. Coke. Method for determination of bulk density in a small container. Introduced: 01.07.2012.
13. GOST ISO 1013–95. Coke. Method for determination of bulk density in a large container. Introduced: 01.01.1997.
14. Syskov К. I. Theoretical bases for evaluation and improvement of blast furnace coke quality. Moscow: Metallurgiya, 1984. 184 p.
15. GOST 2093–82. Solid fuel. Size analysis. Introduced: 01.01.1983.
16. GOST 5954.1–91. Coke. Sieve analysis (nominal top size greater than 20 mm). Introduced: 01.01.1993.
17. GOST 9434–75. Hard coal coke. Classifi cation by piece size. Introduced: 01.01.1977.
18. Glushchenko I. М. Theoretical bases of the combustible minerals technology: tutorial for universities. Moscow: Metallurgiya. 1990. 296 p.
19. GOST 10220–82. Coke. Methods for the determination of true relative density, apparent relative density and porosity. Introduced: 01.01.1984.
20. GOST 27588–91. Hard coal coke. Methods for determination of total moisture content. Introduced: 01.01.1993.
21. Shestoperova А. V., Kupriyanova S. N., Kruglov V. N. Improvement of coal charge preparation scheme for production of quenched coke in the coke and chemical shop of «EVRAZ NTMK» JSC. Chernye Metally. 2018. No. 7. pp. 20–23.
22. Agroskin А. А., Gleybman V. B. Thermal physics of solid fuel. Moscow: Nedra, 1980. 256 p.
23. Ivanova V. А., Shamina Е. О. Dependence of moisture of foundry coke on its properties and humidity of the environment. Chernye Metally. 2018. No. 6. pp. 6–10.
24. Arzamasov B. N., Makarova V. I., Mukhin G. G. Et. al. Material science: tutorial for universities. Edited by Arzamasov B. N., Mukhin G. G. 8th edition, reprint. Moscow: Izdatelstvo MGTU im. N. E. Baumana, 2008. 648 p.
25. GOST 5953–93. Coke greater than 20 mm in size. Determination of mechanical strength. Introduced: 01.01.1997.
26. GOST 28946–91. Coke. Determination of shatter indices. Introduced: 01.07.1992.
27. GOST 32248–2013. Coal core with size of pieces 20 mm and more. Method of strength determination after reaction with carbon dioxide. Introduced: 01.01.2015.
28. GOST R 54250–2010. Coke. Determination of coke reactivity index (CRI) and coke strength after reaction (CRS). Introduced: 01.07.2012.
29. Leybovich R. Е., Yakovleva Е. I., Filatov А. B. Technology of by-product coke plant. Moscow: Metallurgiya, 1982. 359 p.
30. Vovk L. А., Shamina Е. О., Ivanova V. А. Method for determination of foundry coke electric resistance. 68th All Russia Scientific and Technical Conference of Students, Undergraduates and Postgraduates of universities with international participation, 22 April 2015, Yaroslavl. Proceedings. Yaroslavl: Izdatelsky dom YaGTU, 2015. pp. 589–592.
31. GOST 4668–75. Carbon materials. Method of electrical resistance definition of powder. Introduced: 01.01.1977.

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