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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">10.17073/0368-0797-2017-6-474-480</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-1101</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>ИЗУЧЕНИЕ ПРОЦЕССА ОКИСЛЕНИЯ В ЖЕЛЕЗОРУДНЫХ МАТЕРИАЛАХ ПРИ НИЗКИХ ТЕМПЕРАТУРАХ</article-title><trans-title-group xml:lang="en"><trans-title>OXIDATION PROCESS IN IRON ORE MATERIALS AT LOW TEMPERATURES</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Меламуд</surname><given-names>С. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Melamud</surname><given-names>S. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук </p><p>(620002, Екатеринбург, ул. Мира, 19) </p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.)</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Юрьев</surname><given-names>Б. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Yur’ev</surname><given-names>B. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, доцент кафедры теплофизики и информатики в металлургии </p><p>(620002, Екатеринбург, ул. Мира, 19) </p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair “Thermal Physics and Informatics in Metallurgy”</p></bio><email xlink:type="simple">yurev-b@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гольцев</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gol’tsev</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат технических наук, доцент кафедры теплофизики и информатики в металлургии </p><p>(620002, Екатеринбург, ул. Мира, 19) </p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), Assist. Professor of the Chair “Thermal Physics and Informatics in Metallurgy”</p></bio><email xlink:type="simple">v.a.goltsev@urfu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский федеральный университет имени первого Президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University named after the first President of Russia B.N. Yeltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>02</day><month>07</month><year>2017</year></pub-date><volume>60</volume><issue>6</issue><fpage>474</fpage><lpage>480</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Меламуд С.Г., Юрьев Б.П., Гольцев В.А., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Меламуд С.Г., Юрьев Б.П., Гольцев В.А.</copyright-holder><copyright-holder xml:lang="en">Melamud S.G., Yur’ev B.P., Gol’tsev V.A.</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/1101">https://fermet.misis.ru/jour/article/view/1101</self-uri><abstract><p>С использованием методов физико-химического анализа (дифференциально-термического и минералогического) проведено изучение процесса окисления магнетита (титаномагнетита) на образцах из ольховского магнетитового и качканарского титаномагнетитового концентратов при низких температурах (200 –400 °C). Получены кинетические кривые для исследуемых материалов при различных температурах, типичные для топохимических процессов. Вычислены значения удельных скоростей окисления магнетита разной крупности при различных температурах, а также значения кажущейся энергии активации процесса. С целью выявления лимитирующей стадии процесса окисления магнетита и титаномагнетита изучено влияние парциального давления кислорода в газовой фазе на кинетику окисления. С использованием графического метода рассчитан порядок реакции окисления по кислороду при определенных температурах и степени окисления. Изучено влияние включений титана в магнетите на кинетику фазового перехода магнетит – гематит. Определены кинетические закономерности и характер окисления исследуемых материалов в неизотермических условиях при разных скоростях нагрева. Установлено, что в начальной стадии процесс окисления магнетита и титаномагнетита в температурном интервале 200 –400 °Cпротекает в смешанном режиме, а затем процесс переходит в диффузионный режим. Полученные результаты представляют определенный интерес и могут быть использованы для оптимизации режимов низкотемпературного окисления железорудных материалов на ленте конвейерной обжиговой машины. </p></abstract><trans-abstract xml:lang="en"><p>Using methods of physico-chemical analysis (differentially– thermal and mineralogical) helped to study the oxidation process of magnetite (titanium magnetite) on samples from Olhovsk magnetite and Kachkanar titanium magnetite concentrates at low temperatures (200 –400 °C). Kinetic curves for the studied materials were obtained at different temperatures; they are typical for topochemical processes. Meanings of specific speeds of oxidation of magnetite various size at different temperatures were calculated and sizes of apparent energy of activation of the process were defined. The influence of partial pressure on kinetics of oxidation in gas phase was studied to expose the limiting point of the process of oxidation of magnetite and titanium magnetite. The order of oxidation reaction on oxygen at definite temperatures and the oxidation degree was calculated using graphical methods. The influence of titanium inclusions in magnetite on kinetics of phase change of magnetite–hematite was examined at the temperature interval of 200 –400 °C, it happens in mixed operational parameters. Then the process comes to diffusive operational parameters. Kinetic principles and the character of oxidation of the studied materials in nonisothermical conditions were defined at different speeds of heating. These results are of some interest and can be used to optimize the low temperature oxidation regimes of iron ore materials on a conveyor roasting machine. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>магнетит</kwd><kwd>титаномагнетит</kwd><kwd>низкотемпературное окисление</kwd><kwd>механизм</kwd><kwd>кинетика</kwd><kwd>диффузия</kwd><kwd>степень окисления</kwd><kwd>энергия активации</kwd><kwd>железорудные материалы</kwd><kwd>низкие температуры</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnetite</kwd><kwd>titanium magnetite</kwd><kwd>low temperature oxidation</kwd><kwd>mechanism</kwd><kwd>kinetics</kwd><kwd>diffusion</kwd><kwd>degree of oxidation</kwd><kwd>energy of activation</kwd><kwd>iron ore materials</kwd><kwd>low temperatures</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Малышева Т.Я., Юсфин Ю.С., Плотников С.В. 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