Specific electrical resistance as an indicator ordering of coke structure

2024;
: 78-85
1
National Technical University «Kharkiv Polytechnic Institute» department of oil, gas and solid fuel processing technology
2
State University of Economics and Technology
3
Technical University of Ostrava
4
State Enterprise «State Institute for Designing Enterprises of Coke Oven and By-Product
5
National Technical University «Kharkiv Polytechnic Institute»

The influence of the coking process temperature on the resistivity of coke was studied. Taking into account that the resistivity and post-reaction strength are affected by some common factors, such as temperature level and coke readiness, which indicates the orderliness of its structure, the relationship between these indicators was established. The analysis of dependencies and their statistical evaluation indicates that the studied relationships are characterized by high values of correlation coefficients (0,77-0,84) and determination (59,29-70,56 %)

1. Lyalyuk, V.P., Kassim, D.A., Shmeltser, E.O., Lyakhova, I.A. (2019) Improving the technology of preparing coal for the production of blast-furnace coke under the conditions of multi-basin raw material base. Message 1. Optimizing the composition of coal batch by means of petrographic characteristics. Petroleum and coal, 61(1), 90-93. Retrieved from https://www.vurup.sk/wp-content/uploads/2019/01/PC_x_2018_Shmeltzer_154_...
2. Miroshnichenko, D., Shmeltser, K., Kormer, M. (2023) Factors Affecting the Formation the Carbon Structure of Coke and the Method of Stabilizing Its Physical and Mechanical Properties. C-Journal of Carbon, 9(3), 66. https://doi.org/10.3390/c9030066
https://doi.org/10.3390/c9030066
3. Borisov, L.N., Shapovalov, Y.G. (eds.). (2010). Handbook of coke chemist. In 6 volumes. Vol. 1. Coals for coking. Coal enrichment. Preparation of coals for coking. Kharkov: Publishing House "Inzhek".
4. Shmeltser, E.O., Lyalyuk, V.P., Sokolova, V.P., Miroshnichenko, D.V. (2018) The using of coal blends with an increased content of coals of the middle stage of meta-morphism for the production of the blast-furnace coke. Мessage 1. Рreparation of coal blends.Petroleum and coal, 60(4), 605-611. Retrieved from https://www.vurup.sk/wp-content/uploads/2018/06/PC_4_2018_Miroshnichenko...
5. Shmeltser, E.O., Lyalyuk, V.P., Sokolova, V.P., Miroshnichenko, D.V. (2019) The using of coal blends with an increased content of coals of the middle stage of meta-morphism for the production of the blast-furnace coke. Мessage 2. Assessment of coke quality.Petroleum and coal, 61(1), 52-57. Retrieved from https://www.vurup.sk/wp-content/uploads/2019/01/PC_x_2018_Shmeltzer_155_...
6. Zhang, L.; Wang, G.; Xue, Q.; Zuo, H.; She, X.; Wang, J. (2021) Effect of preheating on coking coal and metallurgical coke properties.Fuel Process. Technol., 22, 106942. https://doi.org/10.1016/j.fuproc.2021.106942
https://doi.org/10.1016/j.fuproc.2021.106942
7. Lu, L., Sahajwalla, V., Harris, D. (2000) Characteristics of chars prepared from various pulverized coals at different temperatures using drop-tube furnace.Energy Fuels, 14, 869-876. doi:10.1021/ef990236s
https://doi.org/10.1021/ef990236s
8. Saranchuk, V.I., Oshovsky, V.V., Lavrenko, A.T., Koshkarev, Y.M. (2013) Method for determining the value of electrical resistance of coal depending on temperature. Scientific Journal of DonNTU. In: Chemistry and chemical technology, 134, 138 - 143.
9. Gerrit Ralf Surup, Tommy Andre Pedersen, Annah Chaldien, Johan Paul Beukes, Merete Tangstad (2020) Electrical Resistivity of Carbonaceous Bed Material at High Temperature.Processes, 8, 0933; doi:10.3390/pr8080933
https://doi.org/10.3390/pr8080933
10. Antal, M., Grønli, M. The art, science, and technology of charcoal production. (2003). Ind. Eng. Chem., 42, 1619-1640. doi:10.1021/ie0207919
https://doi.org/10.1021/ie0207919
11. Adinaveen, T., Vijaya, J.J., Kennedy, L. (2014) Comparative Study of Electrical Conductivity on Activated Carbons Prepared from Various Cellulose MaterialsArab. J. Sci. Eng., 41, 55-65. doi:10.1007/s13369-014-1516-6
https://doi.org/10.1007/s13369-014-1516-6
12. Eidem, P.; Tangstad, M.; Bakken, J. Measurement of material resistivity and contact resistance of metallurgical coke. In Proceedings of the International Ferro-Alloys Congress XI, New Delhi, India, 18-21 February 2007, 561-571. Retrieved from https://www.pyrometallurgy.co.za/InfaconXI/561-Eidem.pdf
13. Buryak, V., Vasil'chenko, G., Chirka, T., Konstantinov, S. (2013) Specific electrical resistance of carbon materials. Refract. Ind. Ceram., 54, 215-219. doi:10.1007/s11148-013-9577-8
https://doi.org/10.1007/s11148-013-9577-8
14. State standard of Ukraine 4096-2002; Brown coal, hard coal, anthracite, combustible shale and coal briquettes. Methods of sample selection and preparation for laboratory tests. Technical Committee of Ukraine on standardization TK-92: Kyiv, Ukraine, 2002.
15. ІSО 1171-97; Solid mineral fuels. Methods for determination of ash. International Organization for Standardization: Geneva, Switzerland, 1997.
16. ІSО 589-81; Hard coal-Determination of total moisture. International Organization for Standardization: Geneva, Switzerland, 1981.
17. ISO 562:2010; Hard coal and coke. Determination of volatile matter. International Organization for Standardization: Geneva, Switzerland, 1981.
18. ISO 334:2020; Coal and coke. Determination of total sulfur. Eschka method. International Organization for Standardization: Geneva, Switzerland, 2020.
19. ІSО 7404-3-84; Methods for the petrographic analysis of bituminous coal and anthracite - Part 3: Method of determining maceral group composition. International Organization for Standardization: Geneva, Switzerland, 1984.
20. ІSО 7404-5-85; Methods for the petrographic analysis of coal - Part 5: Method of determining microscopically the reflectance of vitrinite. International Organization for Standardization: Geneva, Switzerland, 1985.
21. State standard of Ukraine 7722:2015; Hard coal. Method of Determining Plastometric Characteristics. State enterprise "Ukrainian scientific research and training center for problems of standardization, certification and quality": Kyiv, Ukraine, 2015.
22. State standard of Ukraine 3472:2015; Brown coal, hard coal and anthracite. Classification.Kyiv: UkrNDNC SE, 2015.
23. DSTU 8831:2019. Coke. Method for determining the resistivity of coal coke powder. Kyiv: UkrNDNC SE, 2019.
24. ISO 18894:2006 "Coke. Determination of coke reactivity index (CRI) and coke strength after reaction (CSR)". International Organization for Standardization: Geneva, Switzerland, 2006.
25. Ryshchenko, A.I., Kovalev, E.T., Shulga, I.V., Miroshnichenko, D.V. (2009) Influence of coal properties on reactivity and post-reaction strength of coke. J. Coal Chem., 5-6, 11-16.
26. Dash, P.S., Guha, M., Chakraborty, D., Banerjee, P.K. (2012) Prediction of coke CSR from coal blend characteristics using various techniques: A comparative evaluation. Int. J. Coal. Prep. Util., 32, 92-169. doi:10.1080/19392699.2011.640301
https://doi.org/10.1080/19392699.2011.640301
27. Grigore, M., Sakurovs, R., French, D., Sahajwalla, V. (2012) Properties and CO2 reactivity of the inert and reactive maceral derived components in cokes. Int. J. Coal Geol., 98, 1-9. doi:10.1016/j.coal.2012.04.004
https://doi.org/10.1016/j.coal.2012.04.004
28. Pusz, S. Krzesińska, M. Smędowski, Ł. Majewska, J. Pilawa, B. Kwiecińska, B. (2010) Changes in a coke structure due to reaction with carbon dioxide. Int. J. Coal Geol., 81, 92-287. doi:10.1016/j.coal.2009.07.013
https://doi.org/10.1016/j.coal.2009.07.013