Analysis of the Influence of Stabilization of Sinter Initial Properties on Physicochemical Processes in the Characteristic Zones of a Blast Furnace
DOI:
https://doi.org/10.15407/steelcast2025.03-04.028Keywords:
Blast furnace, sinter, granulometry, mineralogy, stabilization, gas permeability, energy resources, charge loadingAbstract
The article investigates the stabilization of the physicochemical properties of iron ore sinter and pellets, as the main components of the blast furnace charge, on physicochemical processes in the characteristic zones of the blast furnace, which is an urgent problem for further improvement of the technology of smelting cast iron. Obtaining high-quality sinter is a complex task, and its solution is based on the stabilization of its initial properties. It is substantiated that the most effective in terms of impact on the results of the process are the increase in mechanical strength, thermal, physicochemical and granulometric stability of the sinter, which affect the conditions and behavior of the components in the characteristic zones under the corresponding conditions of the blast furnace.
The stabilization of the physicochemical characteristics of the sinter is investigated as one of the important factors for ensuring the most rational use of its physicochemical potential when passing through the high-temperature zones of the blast furnace. The key rheological properties of granular flows of the blast furnace charge have been determined, which is important in terms of substantiating effective loading methods and technical solutions for the distribution of charge components in the blast furnace. The influence of the fractional composition of the charge and the ratio of its main components on gas-dynamic conditions has been investigated, especially in the dry zone, the most extensive zone of physicochemical transformations of the blast furnace, which is one of the key factors determining the efficiency of the blast furnace process.
The study used theoretical and analytical methods with an emphasis on the physicochemical component, which include analysis, generalization and interpretation of the results obtained in the context of the correspondence of theoretical concepts and provisions to practical results.
Consistent ideas about the peculiarities of the behavior of charge components in the blast furnace have been obtained. Comparison of such data obtained by different researchers can be used in the future to identify the relevant parameters. The latter, as indicators that determine the conditions for the rational use of effects, the source of which is the interaction of the useful properties of the physicochemical potential of the initial charge and external factors, will allow us to determine reliable interpretations of phenomena, predict the results and indicators of the blast furnace process. They will also become the basis for scientific substantiation of approaches to the selection of effective methods for stabilizing the properties of the sinter with the establishment of reliable relationships between the methods of loading, distribution of the components of the initial charge and gas-dynamic conditions in the furnace.
It is substantiated that to ensure the stability of the blast furnace process, it is necessary to ensure the constancy of the granulometric, chemical composition, mineralogy of the initial iron ore materials (sinter and pellets), coke, as well as high quality and uniformity of the sinter. Systematic control and current regulation of these parameters is the basis for further optimization of the blast furnace process, rational in terms of specific costs of raw materials and energy resources and effective in terms of the results of implementing the properties of its initial physicochemical potential.
It has been proven that a stabilized sinter, in particular in terms of size, porosity, strength, and chemical composition, contributes to increasing furnace productivity, reducing fuel consumption, and improving the quality of cast iron by optimizing physicochemical processes in the blast furnace due to the stability of the flow of gases, that are energy carriers, reducing temperature fluctuations in characteristic zones of the furnace, improving the conditions for the reduction of iron oxides, reducing dust formation and iron losses, and saving coke. Generalization of the research results will allow us to clarify the physicochemical features of the interaction of granular flow components in variable blast furnace conditions.
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References
Okhotskyi, V. B., Kostelov, O. L., Simonov, V. K. et al. (1997). Teoriia metalurhiinykh protsesiv: Pidruchnyk [Theory of metallurgical processes: Textbook]. IZMN [in Ukrainian].
Krivenko, S. V. (2014). Formirovanie zon v aglomeriruemom sloe [Formation of zones in the agglomerated layer]. Metal and Casting of Ukraine, 10(257), 17-22 [in Russian].
Zhao, Z., Li, B., et al. (2020). Influence of Particle Size Distribution of Sinter on Blast Furnace Permeability. Ironmaking & Steelmaking, 47(3), 229-235.
Chen, X., Wang, W., Yang, D., Zheng, H., & Wang, B. (2023). Mineralization Characteristics of Iron Ore Sinter and the Effects of Cooling Rate on Mineral Phase Structure. ISIJ International, 63(2), 261-270. https://doi.org/10.2355/isijinternational. ISIJINT-2022-348
Tereshchenko, A. V. (2019). Ahlomeratsiine vyrobnytstvo [Agglomeration production]. National Mining University [in Ukrainian].
Yefimenko, G. G., Himelfarb, A. A., & Levchenko, V. E. (1988). Metallurgiya chuguna [Metallurgy of cast iron]. Vyshcha shkola [in Russian].
Velychko, G. P., & Kazakov, A. I. (1986). Fizyko-khimichni osnovy ahlomeratsii [Physical and chemical bases of agglomeration]. Tekhnika [in Ukrainian].
Zervas, E., & de Souza, R. G. (2017). Oxidation and reduction during iron ore sintering: Influence on sinter quality. ISIJ Int., 57(9), 1534-1542.
Bochka, V., Tarakanov, A., Sova, A., Boyko, M., Yaholnyk, M., & Dvoiehlazova, A. (2019). Improving the technology production of quality agglomerate. Theory and practice of metallurgy, (1), 5-14. https://doi.org/10.34185/tpm.1.2019.01 [in Ukrainian].
Chechel, I. F. (1998). Ahlomeratsiine vyrobnytstvo [Agglomeration production]. Porogi [in Ukrainian].
Ilkiv, V. Ya., Zaulychnyy, Ya. V., Gun’ko, V. М., Zarko, V. I., Yavorskyi, Y. V., Karpetz, М. V., & Dudka, O. I. (2015). Effect of mass ratio of initial precursors and mechanical activation on distribution of valence electrons in Al2O3/Fe2O3 mixtures. Journal of Surface Physics and Engineering, 13(3), 390-398. https://periodicals.karazin.ua/pse/article/view/8033 [in Ukrainian].
Tsiupa, N. O., & Tohobytska, D. M. (2022). Otsinka koroziinoi aktyvnosti luhovmisnykh domennykh shlakiv po vidnoshenniu do vohnetryviv [Assessment of the corrosion activity of alkali-based blast furnace slags in relation to refractories]. Abstracts of the All-Ukrainian Scientific and Technical Conference “Science and Metallurgy” November 22-24. Dnipro. 2022, pp. 28-29. https://doi.org/10.52150/2522-9117-2022-conferens [in Ukrainian].
Krivenko, S. V., Russkikh, V. P., & Tomash, A. A. (2010). Uluchshenie strukturyi aglomerata izmeneniem intensivnosti goreniya topliva shihtyi [Improving the structure of the sinter by changing the intensity of combustion of the charge fuel]. Metallurgical and Mining Industry, 2(260), 36-40 [in Russian].
Myanovska, Ya., Mishalkin, A., Ankudinov, R., Tokaryev, S., & Dvorkovoj, O. (2019). The use of vegetable materials in the processes of processing iron-metallurgical waste. Theory and practice of metallurgy, (4), 38-49. https://doi.org/10.34185/tpm.4.2019.06 [in Ukrainian].
Wang, X. A., Jiang, X., Gao, Y., Huo, H. Y., & Shen, M. F. (2019). Investigation on fl uidity of SFCA and sintering strength based on phase diagram. Iron and Steel, 54(5), 9-13.
Ryabchikov, M. Yu. (2018). Metallurgical agglomerate quality management with the account of its impact on the blast-furnace process efficiency. The International Journal of Advanced Manufacturing Technology, 94, 3785-3794. https://doi.org/10.1007/s00170-017-1138-8
Nikiforov, D. S. (2023). Rekonstruktsiia domennoi pechi v umovakh kombinatu PAT “Zaporizhstal” [Reconstruction of the blast furnace in the conditions of PJSC «Zaporizhstal» plant]. https://dspace.znu.edu.ua/jspui/handle/12345/12337 [in Ukrainian].
Bochka, V. V., Sova, A. V., & Dvoeglazova, A. V. (2019). Improving of the quality of agglomerate by improving the method of charge preparation. Metal and Casting of Ukraine, 1-2 (308-309), 3-10 [in Russian].
Bocquet, L., Losert, W., Schalk, D., Lubensky, T. C., & Gollub, J. P. (2002). Granular shear flow dynamics and forces: Experiment and continuum theory. Physical Review E, 65(1). 011307. https://doi.org/10.1103/PhysRevE.65.011307
Nikulin, V. V. (2012). Vplyv hranulometrychnoho skladu shykhty na pylounos ta hazopronyknist koloshnyka domennoi pechi [Influence of charge granulometric composition on dust and gas permeability of blast furnace grate]. Steel, (10), 13-19 [in Ukrainian].
Bolshakov, V. I., Ivancha, N. G., Nesterov, A. S., Muraveva, I. G., Togobitskaya, D. N., & Semenov, Yu. S. (2015). PROEKT 7.12. Razrabotka meropriyatiy po prodleniyu kampanii domennyih pechey putem usovershenstvovaniya tehnologii zagruzki, shlakovogo rezhima I avtomatizirovannogo kontrolya parametrov domennoy plavki v usloviyah nestabilnosti kachestva shihtovyih materialov [PROJECT 7.12. Development of measures to extend the blast furnace campaign by improving the loading technology, slag regime and automated control of blast furnace melting parameters under conditions of deteriorating quality of charge materials], pp. 628-634. https://www.researchgate.net/publication/336126543_Razrabotka_meropriatij_po_prodleniu_kampanii_domennyh_pecej_putem_usoversenstvovania_tehnologii_zagruzki_slakovogo_rezima_i_avtomatizirovannogo_kontrola_parametrov_domennoj_plavki_v_usloviah_nestabiln [in Russian].
Humin, O. O. (2017). Matematychne modeliuvannia ta optymizatsiia parametriv domennoho protsesu z urakhuvanniam hranulometrychnoho skladu shykhty [Mathematical modeling and optimization of blast furnace process parameters taking into account the particle size distribution of the charge]. Thesis for the degree of Candidate of Technical Sciences. NSU. Dnipro, 218 p. [in Ukrainian].
Brodyanskiy, V. M., Verhivker, G. P., Karchev, Ya. Ya. et al. (1991). Eksergeticheskie raschetyi tehnicheskih sistem: Sprav. Posobie [Exergy calculations of technical systems: a reference manual]. Nauk. Dumka [in Russian].
Ivancha, N. G., Muravyeva, I. G., Vishnyakov, V. I., Shcherbachev, V. R., & Yermolina, K. P. (2022). Povyishenie energoeffektivnosti domennoy plavki za schet vyibora ratsionalnyih parametrov rezhima zagruzki mnogokomponentnoy shihtoy [Increasing the energy efficiency of blast furnace melting by choosing rational parameters of the mode of loading with a multicomponent charge]. Problemele energeticii regionale, 2(54), 53-62 [in Russian].
Kassim, D. O., Lyalyuk, V. P., Zhuravlev, F. M., Lyakhova, I. A., & Chuprinov, E. V. (2018). Main direction of the innovative improving of the blast furnace technologies – use of one type of iron raw material, combining the best properties of agglomerate and pellets. Reporter of the Priazovskyi State Technical University. Section: Technical Sciences, (36), 7-15. https://doi.org/10.31498/2225-6733.36.2018.142462 [in Ukrainian].
Semenov, Yu. S. (2013). Vyibor ratsionalnyih rezhimov zagruzki domennoy pechi, oborudovannoy BZU, dlya usloviy rabotyi s maloy massoy podachi i s nestabilnyim kachestvom shihtovyih materialov [Selection of rational loading modes of a blast furnace equipped with a BFU for operating conditions with a small feed mass and unstable quality of charge materials]. Chermetinformatsiya. Bulletin “Black Metallurgy”, (12), 14-19 [in Russian].
Semenov, Yu. S. (2016). Novyie podhodyi v upravlenii zagruzkoy domennoy pechi, oborudovannoy BZU, v sovremennyih usloviyah rabotyi [New approaches to controlling the loading of a blast furnace equipped with a BFU under modern operating conditions]. Knowledge of processes and development of blast furnace smelting technology: collective work of the second international symposium under the scientific editorship of Doctor of Technical Sciences, Professor I. G. Tovarovsky. Dnipro: Zhurfond, 382 p. pp. 272-285 [in Russian].
Bhagyaraj, D., Kalidhasan, S. K., Satalgoan, H. S., Srinivasan, M., Sudharsan, V., & Krishana, N. S. R. (2023). Blast Furnace process optimization for sustainable Iron making. Journal of Emerging Technologies and Innovative Research, 10(10). https://www.jetir.org/papers/JETIR2310070.pdf
Golovchenko, A., Pazynich, Yu., & Potempa, M. (2018). Automated Monitoring of Physical Processes of Formation of Burden Material Surface and Gas Flow in Blast Furnace. Solid State Phenomena, 277, 54-65. https://doi.org/10.4028/www.scientific.net/SSP.277.54
Golovchenko, А., Dychkovskyi, R., Pazynich, Yu., Edgar, C. C.,. Howaniec, N., Jura, B., & Smolinski, A. (2020). Some Aspects of the Control for the Radial Distribution of Burden Material and Gas Flow in the Blast Furnace. Energies, 13(4). 923. https://doi.org/10.3390/en13040923
Mishalkin, A. P., Turyshchev, V. V., Kamkin, V. Yu., & Kolbin, M. A. (2016). Teoretychna otsinka efektyvnosti zaminy chastyny ahlomeratu na zaliznu rudu pry vyplavtsi chavunu [Theoretical assessment of the efficiency of replacing part of the sinter with iron ore in iron smelting. Special metallurgy: yesterday, today, tomorrow]. [Electronic resource]: materials of the XIV All-Ukrainian scientific and practical conference, Kyiv, April 19, 2016 / [editors: V. S. Bogushevsky (ed.) et al.]. K.: NTUU “KPI”, 2016. 1034 p. [in Ukrainian].
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