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Ironmaking
ArticleName Review and analysis of the state-of-the-art methods for studying completeness of the BF pulverized coal combustion
ArticleAuthor P. I. Chernousov, S. N. Seregin, O. V. Golubev.
ArticleAuthorData

National University of Science and Technology «MISiS» (Moscow, Russia):

P. I. Chernousov, Cand. Eng., Associate Prof., e-mail: p.chernou@yandex.ru
O. V. Golubev, Cand. Eng., Associate Prof., e-mail: olega-san@yandex.ru

 

Stoilenskiy Mining and Beneficiation Plant (GOK) (Staryi Oskol, Russia):
S. N. Seregin, Director of Repair Complex, e-mail: seregin_sn@nlmk.com

Abstract

Currently, in Russia at the Nizhny Tagil, West Siberian and Novolipetsk metallurgical plants have been implemented projects for the introduction of pulverized coal fuel (PCF) technology. In the next decade, we should expect the expansion of the use of PCF at domestic integrated metallurgical plants, therefore the analysis of the world experience of the effective use of PCF is relevant. The main modern methods of studying the unused residue from pulverized coal blown into the blast furnace are presented, their advantages and disadvantages are considered, and the adequacy of the conditions of the blast furnace tuyere zone is analyzed for methods of physical modeling of PCF combustion. Based on the results of the study, it was concluded that vertical tube furnaces (VTF) and stream reactors (SR) most adequately reflect the conditions of the blast furnace tubercle zone. It is proposed to use a single term to denote a partially reacted PCF leaving the blast furnace with a gas – «unused coke residue of PCF» (UCR PCF). The data on the content of UCR PCF in blast furnace dust and sludge, obtained using X-ray phase analysis (XRF), is well supplemented by data on the microstructure of dust particles obtained using the Field Emission Scanning Electron Microscopy (FESEM) method. A possible option for combining the advantages of optical microscopy and XRF is the preliminary preparation of samples of UCR PCF using equipment simulating the tuyere zone and the blast furnace shaft. These samples, studied using XRF, can later be used as a reference for the identification of UCR PCF in the study of blast dust using optical microscopy. The implementation of this approach is possible, for example, in the framework of the joint work of a large research center and several metallurgical companies.

keywords Pulverized coal fuel, blast fusion, Cox, the fullness of Tuyere combustion hearth
References

1. Chernousov P. I., Seregin S. N., Golubev O. V. Properties of coal for the production of pulverized coal and the criteria for their selection. Chernye Metally. 2018,. No. 11. pp. 43–49.
2. Kushnarev A. V., Filippov V. V., Mikhalev V. A., Tleugabulov B. S. System improvement of vanadium hot metal process at EVRAZ NTMK. CIS Iron and Steel Review. 2017. Vol. 13. pp. 13–17.
3. R. Schott. Experience of Kuettner in the field of new blast furnace injection technologies. Chernye Metally. 2016. No. 8. pp. 15–24.
4. Lu L., Sahajwalla V., Harris D. Coal Char Reactivity and Structure – Effects Affecting PCI Operation in Blast Furnace. 59th Ironmaking Conference Proceedings. Pittsburgh, USA. March 26-29, 2000. pp. 295–303.
5. Kharlashin P. S., Kuzemko R. D. Effect of high-temperature zone parameters on the thermal flow imparted to a particle. Vestnik
Priazovskogo gosudarstvennogo tekhnicheskogo universiteta. Seriya: Tekhnicheskie nauki. 2012. No. 24. pp. 148–153.
6. Bösenhofer M., Jordan C., Harasek M., Feilmayr C., Hauzenberger F., Walk A., Tjaden S. Pulverized Coal Injection (PCI) Test Facilities and Methods – Overview and Recommendations. AISTech 2018 Conference Proceedings. Philadelphia, USA. May 7-10, 2018. pp. 287–295.
7. Dhonau B., Hillmann C.. Experience of operation of the new coal injection unit in Germany. Chernye Metally. 2016. No. 3. pp. 40–41.
8. Carneiro R. T. S., Sad H., Junior H. R. S. Coal Selection Methodology For Blast Furnace Injection. 60th Ironmaking conference proceedings, Iron and Steel Society, Baltimore, MD, USA, 2001. pp. 485–494.
9. Lu L., Sahajwalla V., McLean A. Coal Conversion Reactions and Their Impact on BF PCI Operations. The 5th International Congress on the Science and Technology of Ironmaking (ICSTI'09), Shanghai, China, October 20-22, 2009. pp. 817–821.
10. Kochura V. V., Yaroshevsky S. L., Kupenko V. I., Popov V. Е., Ivanov S. А. Determination of the degree of pulverized coal combustion in the blast furnace No. 2 of JSC Donetskstal – Metallurgical Plant. Nauchnye trudy Donetskogo natsionalnogo tekhnicheskogo universiteta. Seriya: Metallurgiya. 2010. No. 12 (177). pp. 56–65.
11. Kochura V. V., Yaroshevsky S. L., Popov V. Е., Kupenko V. I., Khrapko A. V., Ivanov S. A., Braga V. V. Study of pulverized coal combustion completeness in blast furnace No.1 JSC Donetskstal – Metallurgical Plant. Metall i lityo Ukrainy. 2011. No. 9–10. pp. 16–21.
12. Kochura V. V., Yaroshevsky S. L., Kupenko V. I., Mishin I. V. The method for determination of the degree of pulverized coal combustion in blast furnaces. Metallurg. 2013. No. 8. pp. 26–34.
13. Kochura V. V., Yaroshevsky S. L., Kupenko V. I., Mishin I. V. Improvement of the method to determine the degree of pulverized coal gasification in blast furnaces. Metallurgicheskaya i gornorudnaya promyshlennost. 2013. No. 4. pp. 3–6.
14. Ma Z., Zhu W., Wang D., Qing Ge. Research and Practice on Coal Utilization Under High PCI Rate in Shougang Qiangang BF. The 5th International Congress on the Science and Technology of Ironmaking (ICSTI'09), Shanghai, China, October 20–22, 2009. pp. 792–796.
15. The change of the content of unused coal and coke in blast furnace dust and sludge and the coefficient of coal utilization during pulverized coal injection with a high specific rate. Novosti chernoy metallurgii za rubezhom. 2009. No. 3. pp. 20–25.
16. Ding R., Wu K., Zhu L., Shao T., Zhang E. Related Investigation On The High PCI Rate At Shouqin BF1. Proceedings of 6th International Congress on the Science and Technology of Ironmaking – ICSTI, 42nd International Meeting on Ironmaking and 13th International Symposium on Iron Ore, Rio de Janeiro, RJ, Brazil, October 14–18, 2012. pp. 2689–2697.
17. Kruse R. J., Chaubal P. C., Moore J. B., Valia H. S. Blast Furnace PCI Coal Selection at Ispat Inland. ISSTech 2003 Conference Proceedings. Indianapolis, USA, 2003. pp. 787–797.
18. Belenkov Е. А., Karnaukhov Е. А. Effect of crystal sizes on interatomic distances in disperse carbon. Fizika tverdogo tela. 1999. Vol. 41, Iss. 4. pp. 744–747.
19. Sahajwalla V., Kong C., Chaubal P. C., Valia H. S. Determination of Proportions of Coal Char and Coke Fines in the Off Gas Blast Furnace Samples. 59th Ironmaking Conference Proceedings, Pittsburgh, USA. March 26–29, 2000. pp. 305–311.
20. Sahajwalla V., Kong C., Lu L., Hyle F. W., Kmiec A., Morey J. Investigation of Combustion Behavior of a PCI Coal and Unburnt Char Carryover in a US Steel Blast Furnace. 60th Ironmaking Conference Proceeding, Baltimore, USA 2001. pp. 451–458.
21. Gupta S. K., Sahajwalla V., Al-Omari Y., Saha-Chaudhury N., Rorick F., Hegedus G., Chaubal P., Burgo J., Best M., Hyle F. Atomic Structure Of Coke Fines In Blast-Furnce Dust And Their Origin In Operating Blast Furnaces. ISSTech 2003 Conference Proceedings, Indianapolis, USA, April 27–30, 2003. pp. 841–853.
22. Sahajwalla V., Gupta S. K., Al-Omari Y., Saha-Chaudhury N., Rorick F., Hegedus G., Chaubal P., Burgo J., Best M., Hyle F. Combustion Characteristics of Pulverized Coals and Char Released in Blast Furnace Off-Gas. ISSTech 2003 Conference Proceedings, Indianapolis, USA, April 27–30, 2003. pp. 775–785.
23. Babich A., Senk D., Born S. Conversion Behaviour by Multiple Injection Into the Blast Furnace Tuyere. AISTech 2014 Conference Proceedings. Indianapolis, USA, May 5–8, 2014. pp. 795–803.
24. Ray S., Giroux L., MacPhee T., Wing K., Todoschuk T. Evaluation of PCI Coals in New Injection Facility at CanmetENERGY-OTTAWA. AISTech 2015 Conference Proceedings. Cleveland, Ohio, USA, May 4–7, 2015. pp. 926–937.
25. Ray S., Giroux L., MacPhee T., Wing Ng Ka, Todoschuk T. Study of PCI Coals in New Injection Rig at CanmetENERGY (Ottawa). METEC and 2nd ESTAD 2015 Conference Proceedings. Düsseldorf, Germany, 15–19 June 2015. p. 7.
26. Zhang J., Jiang Z., Qi C., Lu M., Yan Y. Petrographic Analysis On Utilization Research Of Unburned Pulverized Coal In Blast Furnace. Proceedings of 6th International Congress on the Science and Technology of Ironmaking – ICSTI, 42nd International Meeting on Ironmaking and 13th International Symposium on Iron Ore, Rio de Janeiro, Brazil, October 14–18, 2012. pp. 2052–2064.

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