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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">10.17073/0368-0797-2026-1-31-38</article-id><article-id custom-type="elpub" pub-id-type="custom">blackmet-3014</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>МАТЕРИАЛОВЕДЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIAL SCIENCE</subject></subj-group></article-categories><title-group><article-title>Особенности совместного известкового автоклавного обескремнивания кварц-титановых концентратов и гидротермального синтеза гидросиликатов кальция</article-title><trans-title-group xml:lang="en"><trans-title>Features of joint lime autoclave desiliconization of quartz-titanium concentrates and hydrothermal synthesis of calcium hydrosilicates</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5192-3786</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Заблоцкая</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Zablotskaya</surname><given-names>Yu. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юлия Витальевна Заблоцкая, к.т.н., старший научный сотрудник</p><p>Россия, 119334, Москва, Ленинский пр. 49</p></bio><bio xml:lang="en"><p>Yuliya V. Zablotskaya, Cand. Sci. (Eng.), Senior Researcher</p><p>49 Leninskii Ave., Moscow 119334, Russian Federation</p></bio><email xlink:type="simple">yuliaz202123@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/0009-0001-5419-2189</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тужилин</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Tuzhilin</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алексей Сергеевич Тужилин, к.т.н.</p><p>Россия, 119334, Москва, Ленинский пр. 49</p></bio><bio xml:lang="en"><p>Aleksei S. Tuzhilin, Cand. Sci. (Eng.)</p><p>49 Leninskii Ave., Moscow 119334, Russian Federation</p></bio><email xlink:type="simple">astuzhilin@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>Садыхов</surname><given-names>Г. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Sadykhov</surname><given-names>G. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Гусейн Бахлулович Садыхов, д.т.н., заведующий лабораторией проблем металлургии комплексных руд им. академика И.П. Бардина</p><p>Россия, 119334, Москва, Ленинский пр. 49</p></bio><bio xml:lang="en"><p>Gusein B. Sadykhov, Dr. Sci. (Eng.), Head of the Bardin Laboratory of Metallurgy of Complex Ores</p><p>49 Leninskii Ave., Moscow 119334, Russian Federation</p></bio><email xlink:type="simple">sadykhov@imet.ac.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт металлургии и материаловедения им. А.А. Байкова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>25</day><month>02</month><year>2026</year></pub-date><volume>69</volume><issue>1</issue><fpage>31</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Заблоцкая Ю.В., Тужилин А.С., Садыхов Г.Б., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Заблоцкая Ю.В., Тужилин А.С., Садыхов Г.Б.</copyright-holder><copyright-holder xml:lang="en">Zablotskaya Y.V., Tuzhilin A.S., Sadykhov G.B.</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/3014">https://fermet.misis.ru/jour/article/view/3014</self-uri><abstract><p>В ИМЕТ РАН разработан автоклавный известково-щелочной способ обескремнивания титановых концентратов Пижемского и Ярегского месторождений (Средний и Южный Тиман, Республика Коми). Рудами этих месторождений являются кварц-лейкоксеновые и кварц-ильменит-лейкоксеновые песчаники. Формирование титановой составляющей данных месторождений связано с лейкоксенизацией ильменита. Геологический процесс включал удаление железа из материнских титановых минералов и заполнение образующихся пустот кварцем путем его кристаллизации из гидротермальных растворов. Это привело к ультрадисперсному размеру включений (1 – 20 мкм) SiO2 и его структуре, характеризующейся более слабыми (ненасыщенными) связями Si – O (Si). В результате достигается высокая степень обескремнивания лейкоксенового и ильменитового концентратов при температуре 220 °C в автоклавных условиях за счет почти полного удаления кварца из зерен титана. Одновременно протекает гидротермальный синтез гидратов метасиликата кальция (тоберморита, ксонотлита), морфологические свойства которых зависят от условий автоклавного выщелачивания. В автоклаве в течение сравнительно короткой продолжительности процесса при соотношении СаО/SiO2 = 0,7 – 1,0 происходит формирование кальциевого силиката с игольчатым габитусом, который образует преимущественно радиально-лучистые агломераты. При последующем прокаливании происходит полная их дегидратация с кристаллизацией β-волластонита (CaSiO3 ), приобретающего все большее практическое применение в различных областях, в том числе и наукоемких.</p></abstract><trans-abstract xml:lang="en"><p>The Baikov Institute of Metallurgy and Materials Science of the Russian Academy of Sciences (IMET RAS) developed an autoclave lime-alkali desiliconization method for titanium concentrates from the Pyzhemskoye and Yaregskoye deposits (Sredny and Yuzhny Timan, Komi Republic). The ores of these deposits are quartz-leucoxene and quartz-ilmenite-leucoxene sandstones. The formation of the titanium component of these deposits is associated with the leucoxenization of ilmenite. The geological process involved the removal of iron from the parent titanium minerals and the filling of the resulting voids with quartz through its crystallization from hydrothermal solutions. This resulted in the ultra-dispersed size of inclusions (1 – 20 µm) of SiO2 and its structure characterized by weaker (unsaturated) Si – O (Si) bonds. As a result, a high degree of desiliconization of leucoxene and ilmenite concentrates is achieved at 220 °C under autoclave conditions due to the almost complete removal of quartz from titanium grains. At the same time, hydrothermal synthesis of calcium metasilicate hydrates (tobermarite, xonotlite) takes place, the morphological properties of which depend on the conditions of autoclave leaching. In the autoclave, during a relatively short duration of the process, at a ratio of CaO/SiO2 = 0.7 – 1.0, calcium silicate with a needle-like habit is obtained, which forms predominantly radially radiant sinters. Upon subsequent calcination, their complete dehydration occurs with the crystallization of β-wollastonite (CaSiO3 ) increasingly gaining practical application in various fields, including science-intensive ones.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лейкоксен</kwd><kwd>ильменит</kwd><kwd>кварц</kwd><kwd>волластонит</kwd><kwd>известковое автоклавное обескремнивание</kwd><kwd>Ярегское месторождение</kwd><kwd>Пижемское месторождение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>leucoxene</kwd><kwd>ilmenite</kwd><kwd>quartz</kwd><kwd>wollastonite</kwd><kwd>lime autoclave desiliconization</kwd><kwd>Yaregskoye deposit</kwd><kwd>Pyzhemskoye deposit</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнялась по государственному заданию № 075-00319-25-00. По материалам XVI Международной научной конференции «Физико-химические основы металлургических процессов» имени академика А.М. 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