{"id":2974,"date":"2023-04-15T01:28:17","date_gmt":"2023-04-14T23:28:17","guid":{"rendered":"https:\/\/jrn.isi.gov.ua\/?page_id=2974"},"modified":"2023-08-12T23:40:40","modified_gmt":"2023-08-12T20:40:40","slug":"doi-10-52150-2522-9117-2022-36-226-239","status":"publish","type":"page","link":"https:\/\/jrn.isi.gov.ua\/?page_id=2974&lang=en","title":{"rendered":"DOI: 10.52150\/2522-9117-2022-36-226-239"},"content":{"rendered":"

Molchanov Lavr Serhiiovych, <\/strong>Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, Ukraine, 49107. ORCID: 0000-0001-6139-5956<\/p>\n

Golub Tetyana Sergeevna<\/strong>, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, Ukraine, 49107. ORCID: 0000-0001-9269-2953. E-mail: dove@email.ua<\/p>\n

STUDY OF CHANGES IN THE STRUCTURAL AND CHEMICAL COMPOSITION OF PERICLASE-CARBONATE REFRACTORIES IN THE PROCESS OF OPERATION AS THE LINING OF OXYGEN CONVERTERS<\/strong><\/h3>\n

Summary. <\/strong>The refractory lining plays a crucial role in the performance of modern oxygen converter process, as its durability determines the life of the metallurgical unit. During the campaign, it is subjected to various extreme loads and factors of different nature. The most reliable and widespread methods of establishing the causes of the destruction of refractories are chemical research and structural research of burnt bricks after service in converters. In the work carried out, a study of changes in the lining of a 50-ton oxygen converter was carried out in order to expand the understanding of the influence of technological factors on the macro picture of the destruction of the lining. Thermodynamic analysis confirmed the fact that iron oxides have the greatest influence on lining components, especially in combination with silicon, which has a rather low melting point (1200 o<\/sup>C), which under conditions of elevated melt temperature leads to dissolution and cracking of the refractory working layer.
\nIn the zone of the upper cone, a significant influence of magnesium oxidation reactions was established, which is connected with its high affinity to oxygen. For the zone of the metal bath, a significant contribution to the destruction of refractories is made by the oxidation reactions of magnesium and aluminum (as antioxidants in refractories) and their interaction with sulfur, which is due to the greatest affinity of these elements with oxygen and their high activity. In the slag zone reactions of refractory carbon with monooxide of iron, magnesium oxide with magnetite, and interaction of fayalite with carbon and magnesium oxide have great influence. The results of X-ray fluorescence analysis confirm the destruction of refractory products during oxygen conversion as a result of impregnation of the slag melt components into the volume of the refractory, namely due to the interaction of iron and manganese oxides with the carbon-containing bond at elevated temperatures.<\/p>\n

Key words:<\/strong> oxygen converter, periclase-carbon refractories, working zones of the converter, macrostructural analysis, thermodynamic analysis of the course of reactions, X-ray fluorescence analysis of refractories.<\/p>\n

DOI: https:\/\/doi.org\/10.52150\/2522-9117-2022-36-226-239<\/a><\/p>\n

For citation:<\/strong> Molchanov L. S., Golub T. S. Doslidzhennia zminy strukturnoho ta khimichnoho skladu peryklazovuhletsevykh vohnetryviv u protsesi ekspluatatsii u skladi futerivky kysnevykh konvertoriv [Study of changes in the structural and chemical composition of periclase-carbonate refractories in the process of operation as the lining of oxygen converters]. Fundamental and applied problems of ferrous metallurgy<\/em>. 2022. Collection 36. P. 226-239. [In Ukrainian]. https:\/\/doi.org\/10.52150\/2522-9117-2022-36-226-239<\/p>\n

References<\/strong><\/p>\n

    \n
  1. Smirnov, A. N. (2010). Perspektivy razvitia rynka ogneuporov dlia staleplavilnogo kompleksa Ukrainy [Prospects for the development of the refractories market for the steelmaking complex of Ukraine]. Metal and casting of Ukraine<\/em>, (11), 3-7<\/li>\n
  2. Suvorov, S. \u0410., & Kozlov, V. V. (2011). Ekspluataciia futerovok I konstrukciy, vypolnennyh iz ogneupornyh materialov<\/em> [Operation of linings and structures made of refractory materials]. SPSTU(\u0422U)<\/li>\n
  3. Kasai, K. (1994, April). Recent advances in refractories technology for steelmaking. Nipponsteel technical report, No. 61. (p. 83-88)<\/li>\n
  4. Martino, M., Fenu, M., & Anfosso, A. (2006). Refractory Lining for Oxygen Converters: Recent Experiences in this Field. Proceedings of 5-th European Steelmaking Conference, 26-28 June, 2006, Aachen, Germany. Dusseldorf: Steel Institute VDEh<\/em>, 2006, 229-233<\/li>\n
  5. Boychenko, S. B., Vasilev, D. P., Boychenko, B. \u041c, & \u041colchanov, L. S. (2016). Iznos periklazouglerodistuh ogneuporov v konvertere pri izmenenii topa antioksidantov [Wear of periclase-carbon refractories in a converter with a change in the type of antioxidants]. Bulletin Ferrous metallurgy<\/em>, (5), 57-60<\/li>\n
  6. Sigarev, Ye. N., Sigarev, N. K., Semenova, D. \u0410., & Bayduzh, Yu. V. (2015). \u0422opografirovanie poverhnosti futerovki konvertera [Topography of the converter lining surface]. Collection of scientific practices of the Dniprodzerzhinsk State Technical University. Technical sciences<\/em>, 1, 10-19<\/li>\n
  7. Pischida, V. I., Boychenko, B. \u041c., Velichko, \u0410. G., & \u0422arnavskiy, \u041c. S. (2003). \u041e mehanizme iznosa periklazouglerodistyh ogneuporov v konvertere [On the wear mechanism of periclase-carbon refractories in a converter]. Metallurgical and mining industry<\/em>, (8), 98-101<\/li>\n
  8. Sinelnikov, V. O., & Kalisz, D. (2016). Influence the FeO content on slag viscosity at his spraying. Increase the life of the refractory lining. GlassCeram<\/em>, 73(2-4), 144\u2012148. https:\/\/doi.org\/10.1007\/s10717-016-9844-5<\/li>\n
  9. Zrazhevskiy, \u0410. D., Alperovich, Ya. L., Yegorov, Yu. G., & Ohotskiy, V. B. (1996). \u0410naliz prichin iznosa futerovki konvertera [Cause Analysis of Converter Lining Wear]. Metallurgical and mining industry<\/em>, (4), 16-18<\/li>\n
  10. Huang, F., Chunyang, L., Maruoka, N., & Kitamura, S.-Y. (2015). Dissolution behaviour of MgO based refractorie sin\u0441\u0435 CaO\u2013Al2<\/sub>O3<\/sub>\u2013SiO2<\/sub> Ironmaking&Steelmaking<\/em>, 42(7), 553-560. https:\/\/doi.org\/10.1179\/1743281215Y.0000000003<\/li>\n
  11. Suvorov, S. A., & Kozlov, V. V. (2014). Experimental Measurement of the Solubility of Mg\u041e in Metallurgical Slags to Control the Slag-Induced Corrosion of Periclase-Carbon Refractories. Refractories and Industrial Ceramics<\/em>, 55(2), 114-116. https:\/\/doi.org\/10.1007\/s11148-014-9671-6<\/li>\n
  12. Han, J. S., Kang, J. G., Shin, J. H., Chung, Y., & Park, J. H. (2018). Influence of CaF2<\/sub> in calciumaluminate-based slag on the degradation of magnesia refractory. Ceramics International<\/em>, 44(11), 13197-13204. https:\/\/doi.org\/10.1016\/j.ceramint.2018.04.145<\/li>\n
  13. Han, J. S., Chung, Y. & Park, J. H. (2019). Influence of Exposure Temperature on Degradation of Magnesia Refractory by Steel Refining Slags. Mater. Int.<\/em>, 25(5), 1360-1365. https:\/\/doi.org\/10.1007\/s12540-019-00286-3<\/li>\n
  14. High temperature corrosion of ceramics and refractory materials. (2009) In K. G. Nickel, P. Quirmbach, & J. P\u00f6tschke. Shreir\u00b4s Corrosion. <\/em>4th<\/sup> Elsevier Science (p. 668-690)<\/li>\n
  15. Lee, J., Myung, J. & Chung, Y. (2021). Degradation Kinetics of MgO-C Refractory at High Temperature. Metall Mater Trans B<\/em> 52(3), 1179-1185. https:\/\/doi.org\/10.1007\/s11663-021-02106-9<\/li>\n
  16. Vladimirov, L. P. (1970). \u0422ermodinamicheskie raschety ravnovesiia metalurgicheskih reakciy <\/em>[Thermodynamic calculations of the equilibrium of metallurgical reactions]. Metallurgy<\/li>\n<\/ol>\n

    \"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    Molchanov Lavr Serhiiovych, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova Square, 1, Dnipro, Ukraine, 49107. ORCID: 0000-0001-6139-5956 Golub Tetyana Sergeevna, Ph. D. (Tech.), Senior Researcher, Iron and Steel Institute of Z. I. Nekrasov National Academy of Sciences of Ukraine, Academican Starodubova […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2974","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/pages\/2974","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2974"}],"version-history":[{"count":2,"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/pages\/2974\/revisions"}],"predecessor-version":[{"id":4161,"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=\/wp\/v2\/pages\/2974\/revisions\/4161"}],"wp:attachment":[{"href":"https:\/\/jrn.isi.gov.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2974"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}