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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">blackmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Черная Металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-0797</issn><issn pub-type="epub">2410-2091</issn><publisher><publisher-name>National University of Science and Technology "MISIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0368-0797-2025-2-163-170</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-2861</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКО-ХИМИЧЕСКИЕ ОСНОВЫ МЕТАЛЛУРГИЧЕСКИХ ПРОЦЕССОВ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICO-CHEMICAL BASICS OF METALLURGICAL PROCESSES</subject></subj-group></article-categories><title-group><article-title>Термодинамическое моделирование процесса восстановления железорудных материалов водородсодержащими газами</article-title><trans-title-group xml:lang="en"><trans-title>Thermodynamic modelling of reduction of iron ore materials by hydrogen-containing gases</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6446-0215</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дмитриев</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Dmitriev</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Андрей Николаевич Дмитриев, д.т.н., главный научный сотрудник лаборатории пирометаллургии восстановительных процессов</p><p>Россия, 620016, Екатеринбург, ул. Амундсена, 101</p></bio><bio xml:lang="en"><p>Andrei N. Dmitriev, Dr. Sci. (Eng.), Prof., Chief Researcher of the Laboratory of Pyrometallurgy of Reduction Processes</p><p>101 Amundsena Str., Yekaterinburg 620016, Russian Federation</p></bio><email xlink:type="simple">andrey.dmitriev@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-4591-700X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бурова</surname><given-names>Ю. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Burova</surname><given-names>Yu. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юлия Евгеньевна Бурова, младший научный сотрудник лаборатории пирометаллургии восстановительных процессов</p><p>Россия, 620016, Екатеринбург, ул. Амундсена, 101</p></bio><bio xml:lang="en"><p>Yuliya E. Burova, Junior Researcher of the Laboratory of Pyrometallurgy of Reduction Processes</p><p>101 Amundsena Str., Yekaterinburg 620016, Russian Federation</p></bio><email xlink:type="simple">menestrelfox@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1076-2709</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Витькина</surname><given-names>Г. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Vit’kina</surname><given-names>G. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Галина Юрьевна Витькина, к.т.н., ведущий научный сотрудник, заведующий лабораторией пирометаллургии восстановительных процессов</p><p>Россия, 620016, Екатеринбург, ул. Амундсена, 101</p></bio><bio xml:lang="en"><p>Galina Yu. Vit’kina, Cand. Sci. (Eng.), Leading Researcher, Head of the Laboratory of Pyrometallurgy of Reduction Processes</p><p>101 Amundsena Str., Yekaterinburg 620016, Russian Federation</p></bio><email xlink:type="simple">20procents@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6709-4334</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Барбин</surname><given-names>Н. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Barbin</surname><given-names>N. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николай Михайлович Барбин, д.т.н., главный научный сотрудник лаборатории пирометаллургии восстановительных процессов, Институт металлургии Уральского отделения РАН; профессор, Уральский институт государственной противопожарной службы МЧС России</p><p>Россия, 620016, Екатеринбург, ул. Амундсена, 101</p><p>Россия, 620062, Екатеринбург, ул. Мира, 22</p></bio><bio xml:lang="en"><p>Nikolai M. Barbin, Dr. Sci. (Eng.), Chief Researcher of the Laboratory of Pyrometallurgy of Reduction Processes, Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences; Prof., Ural Institute of State Fire Service of EMERCOM of Russia</p><p>101 Amundsena Str., Yekaterinburg 620016, Russian Federation</p><p>22 Mira Str., Yekaterinburg 620062, Russian Federation</p></bio><email xlink:type="simple">nmbarbin@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3991-4366</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Терентьев</surname><given-names>Д. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Terent’yev</surname><given-names>D. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Дмитрий Иванович Терентьев, к.х.н., ведущий научный сотрудник</p><p>Россия, 620062, Екатеринбург, ул. Мира, 22</p></bio><bio xml:lang="en"><p>Dmitrii I. Terent’yev, Cand. Sci. (Chem.), Leading Researcher</p><p>22 Mira Str., Yekaterinburg 620062, Russian Federation</p></bio><email xlink:type="simple">sveripeu@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт металлургии Уральского отделения РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт металлургии Уральского отделения РАН; Уральский институт государственной противопожарной службы МЧС России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences; Ural Institute of State Fire Service of EMERCOM of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Уральский институт государственной противопожарной службы МЧС России</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Institute of State Fire Service of EMERCOM of Russia</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>21</day><month>04</month><year>2025</year></pub-date><volume>68</volume><issue>2</issue><fpage>163</fpage><lpage>170</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дмитриев А.Н., Бурова Ю.Е., Витькина Г.Ю., Барбин Н.М., Терентьев Д.И., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Дмитриев А.Н., Бурова Ю.Е., Витькина Г.Ю., Барбин Н.М., Терентьев Д.И.</copyright-holder><copyright-holder xml:lang="en">Dmitriev A.N., Burova Y.E., Vit’kina G.Y., Barbin N.M., Terent’yev D.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://fermet.misis.ru/jour/article/view/2861">https://fermet.misis.ru/jour/article/view/2861</self-uri><abstract><p>В статье представлены результаты исследования процессов восстановления железорудных титаномагнетитовых окатышей синтез-газом с помощью термодинамического моделирования с использованием программного комплекса «Терра». Его применение позволило смоделировать и спрогнозировать химические и фазовые превращения в железорудных титаномагнетитовых окатышах при восстановлении с использованием водородсодержащего синтез-газа, учитывая влияние температуры, концентрации водорода и других параметров. Расчеты проводились с различным содержанием газовой смеси для оценки эффективности модели. Содержание газовой смеси CO – N2 – H2 – СН4 для расчетов изменялось с увеличением CO и H2 , уменьшением N2 и постоянным СН4 . Термодинамическое моделирование показало, что при достижении баланса основных фаз в высокотемпературных системах при восстановлении различными газовыми смесями концентрация распределения кремния, алюминия, титана, магния и кальция остается постоянной. Значительные изменения наблюдаются в концентрации содержания железа, ванадия и марганца, что связано с особенностями процесса восстановления и составом используемых газов. Получены зависимости равновесного состава системы от температуры при различных содержаниях элементов. Построенная термодинамическая модель описывает процесс восстановления и может быть использована для оптимизации данного процесса в различных условиях производства.</p></abstract><trans-abstract xml:lang="en"><p>The article presents the results of studying the processes of reduction of iron ore titanomagnetite pellets with synthesis gas by means of thermo­dy­namic modeling using the Terra software package. Its use made it possible to model and predict chemical and phase transformations in iron ore titanomagnetite pellets during reduction using hydrogen-containing synthesis gas, taking into account the effect of temperature, hydrogen concentration and other parameters on reduction. Calculations were performed with different gas mixture contents to evaluate the model efficiency. Content of the CO – N2 – H2 – CH4 gas mixture for calculations varied with an increase in CO and H2 , decrease in N2 and constant CH4 . Thermodynamic modeling showed that when balance of the main phases in high-temperature systems is achieved during reduction with various gas mixtures, the concentration of distribution of silicon, aluminum, titanium, magnesium, and calcium elements remains constant. Significant changes are observed in the concentration of iron, vanadium, and manganese, which is associated with the features of reduction process and composition of the gases used. Dependences of the system equilibrium composition on temperature at various element contents were obtained. The constructed thermodynamic model describes the reduction process and can be used to optimize it under various production conditions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термодинамическое моделирование</kwd><kwd>восстановление</kwd><kwd>водород</kwd><kwd>синтез-газ</kwd><kwd>окатыши</kwd><kwd>титаномагнетит</kwd><kwd>железо</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermodynamic modeling</kwd><kwd>reduction</kwd><kwd>hydrogen</kwd><kwd>synthesis gas</kwd><kwd>pellets</kwd><kwd>titanomagnetite</kwd><kwd>iron</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках реализации государственного задания Института металлургии Уральского отделения РАН.</funding-statement><funding-statement xml:lang="en">The work was performed within the framework of the State assignment of the Institute of Metallurgy, Ural Branch of the Russian Academy of Sciences.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Дигонский С.В., Тен В.В. 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