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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">izvestswsu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1560</issn><issn pub-type="epub">2686-6757</issn><publisher><publisher-name>ЮЗГУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21869/2223-1560-2023-27-4-117-131</article-id><article-id custom-type="elpub" pub-id-type="custom">izvestswsu-1206</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>Информатика, вычислительная техника и управление</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Computer science, computer engineering and IT managment</subject></subj-group></article-categories><title-group><article-title>Методика выбора управляющих решений  при оптимизации технологических режимов переработки железорудного сырья с использованием  электромагнитных воздействий</article-title><trans-title-group xml:lang="en"><trans-title>Technique for Selecting Control Decisions in Optimizing  Technological Modes of Processing Iron Ore Raw Materials Using Electromagnetic Influences</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>Ананьева</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ananyeva</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ананьева Анна Валериевна, заместитель генерального директора</p><p>Ленинский пр-т, д. 4, стр. 1а, г. Москва 119991</p></bio><bio xml:lang="en"><p>Anna V. Ananyeva, Deputy General Director</p><p>Leninsky ave., 4, building 1A,  Moscow 119991</p></bio><email xlink:type="simple">plotnikovaav@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Ассоциация субъектов инновационной деятельности в горной отрасли "Инновационные горные технологии"</institution></aff><aff xml:lang="en"><institution>Association of subjects of innovative activity in the mining industry "Innovative mining technologies"</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>01</day><month>03</month><year>2024</year></pub-date><volume>27</volume><issue>4</issue><fpage>117</fpage><lpage>131</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ананьева А.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Ананьева А.В.</copyright-holder><copyright-holder xml:lang="en">Ananyeva A.V.</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://izvestswsu.elpub.ru/jour/article/view/1206">https://izvestswsu.elpub.ru/jour/article/view/1206</self-uri><abstract><sec><title>Цель исследования</title><p>Цель исследования. В работе рассмотрен процесс селективного предразрушения межфазовых границ в железных рудах при использовании магнитно-импульсной обработки. </p></sec><sec><title>Методы</title><p>Методы. При анализе напряженно-деформированного состояния и вязкого разрушения выявлено относительное сходство критериев разрушения в основных минералах железных руд за счет магнитно-стрикционного деформирования зерен магнетита. Установлено, что прочность и вязкость разрушения магнетита превышает аналогичные свойства кальцитов, входящих в состав скарновых железных руд, прочность и вязкость разрушения кварца превышает аналогичные свойства магнетита. Выявлено различие в характере разрушения скарновых руд и железистых кварцитов. </p></sec><sec><title>Результаты</title><p>Результаты. Сформулирован критерий оценки степени разупрочнения межфазовых границ в железных рудах за счет магнитно-импульсного воздействия на основе вероятностного подхода. Произведена теоретическая оценка степени селективного разупрочнения железных руд при магнитно-импульсной обработке с учетом прочностных и магнитно-стрикционных свойств магнетита. </p><p>Приведены результаты экспериментов наноиндентирования межфазовых границ до и после магнитно-импульсной обработки. </p></sec><sec><title>Заключение</title><p>Заключение. Путем анализа длин развивающихся микротрещин под воздействием наноиндентера выявлена возможность снижения вязкости разрушения после магнитно-импульсной обработки железной руды.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose of reseach</title><p>Purpose of reseach. The paper considers the process of selective pre-destruction of interphase boundaries in iron ores by using magnetic-pulse treatment. When analyzing the stress-strain state and viscous fracture, the relative similarity of the fracture criteria in the main minerals of iron ores due to magnetically-striction deformation of magnetite grains. </p></sec><sec><title>Methods</title><p>Methods.It has been established that the strength and toughness of the destruction of magnetite exceeds the analogous properties of calcite in the composition of skarn iron ores, the strength and toughness of quartz fracture exceeds the analogous properties of magnetite. A difference in the character of the destruction of skarn ores and ferruginous quartzites. The criterion for estimating the degree of softening of interphase boundaries in iron ores due to the magnetic-impulse action based on the probabilistic approach is formulated. </p></sec><sec><title>Results</title><p>Results.A theoretical estimate is made of the degree of selective softening of iron ores under magnetic-pulse treatment, taking into account the strength and magnetostriction properties of magnetite. The results of experiments on nanoindentation of interphase boundaries before and after magnetic-pulse processing are presented. </p></sec><sec><title>Conclusion</title><p>Conclusion. By analyzing the lengths of developing microcracks under the influence of a nanoindenter, the possibility of reducing the fracture toughness after a magnetic pulse treatment of iron ore.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>управление технологическим процессом</kwd><kwd>недостаток исходной информации</kwd><kwd>физикотехнологические закономерности</kwd><kwd>обогащение полезных ископаемых</kwd><kwd>измельчение</kwd><kwd>железные руды</kwd><kwd>магнитно-импульсная обработка</kwd><kwd>критерии селективного разупрочнения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>technological process control</kwd><kwd>lack of initial information</kwd><kwd>physical and technological laws</kwd><kwd>mineral processing</kwd><kwd>barrel grinding</kwd><kwd>iron ores</kwd><kwd>magnetic pulse processing</kwd><kwd>criteria of selective softening</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">Mine operating costs and the potential impacts of energy and grinding / James A. 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