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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">vguit</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Воронежского государственного университета инженерных технологий</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Voronezh State University of Engineering Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-910X</issn><issn pub-type="epub">2310-1202</issn><publisher><publisher-name>VSUET</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20914/2310-1202-2023-4-152-158</article-id><article-id custom-type="elpub" pub-id-type="custom">vguit-3356</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>Химическая технология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Fundamental and Applied chemistry, chemical technology</subject></subj-group></article-categories><title-group><article-title>Сравнение химической стойкости титана, тантала и платины в солянокислых окислительных средах в автоклаве</article-title><trans-title-group xml:lang="en"><trans-title>Comparison of chemical firmness of the titanium, tantalum and platinum in muriatic oxidizing environments in the autoclave</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3661-949X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акименко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Akimenko</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант, лаборатория гидрометал-лургических процессов, Академгородок, 50/24, Красноярск, 660036, Россия</p></bio><bio xml:lang="en"><p>graduate student, laboratory of hydrometallurgical processes, Academgorodok, 50/24, Krasnoyarsk, 660036, Russia</p></bio><email xlink:type="simple">aakimenko@krastsvetmet.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/0000-0001-7778-5393</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белоусов</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belousov</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д.х.н., профессор, лаборатория гидрометал-лургических процессов, Академгородок, 50/24, Красноярск, 660036, Россия</p></bio><bio xml:lang="en"><p>Dr. Sci. (Chem.), professor, laboratory of hydrometallurgical processes, Academgorodok, 50/24, Krasnoyarsk, 660036, Russia</p></bio><email xlink:type="simple">ov_bel@icct.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/0000-0002-6137-0975</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Борисов</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Borisov</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.х.н., научный сотрудник, лаборатория гидрометаллургических процессов, Академгородок, 50/24, Красноярск, 660036, Россия</p></bio><bio xml:lang="en"><p>Cand. Sci. (Chem.), researcher, laboratory of hydrometallurgical processes, Academgorodok, 50/24, Krasnoyarsk, 660036, Russia</p></bio><email xlink:type="simple">roma_boris@list.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт химии и химической технологии – обособленное учреждение ФИЦ КНЦ СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Chemistry and Chemical Technology of the Sibirian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>18</day><month>12</month><year>2023</year></pub-date><volume>85</volume><issue>4</issue><fpage>152</fpage><lpage>158</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Акименко А.А., Белоусов О.В., Борисов Р.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Акименко А.А., Белоусов О.В., Борисов Р.В.</copyright-holder><copyright-holder xml:lang="en">Akimenko A.A., Belousov O.V., Borisov R.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://www.vestnik-vsuet.ru/vguit/article/view/3356">https://www.vestnik-vsuet.ru/vguit/article/view/3356</self-uri><abstract><p>В современной гидрометаллургии процессы автоклавного выщелачивания находят широкое применение, что связано с рядом преимуществ перед процессами, протекающими в открытых системах. В аффинажной отрасли страны внедрение таких технологий затруднительно, и одна из причин – высокие требования к коррозионной устойчивости конструкционных материалов. В настоящей работе исследовано поведение металлических пластин тантала, титана и платины в растворах соляной кислоты с добавками пероксида водорода в автоклавных условиях, в температурном диапазоне 100–200 °С. Показано, что удельная скорость растворения платины в автоклавных условиях на несколько порядков выше скоростей растворения титана и тантала в аналогичных условиях. Так, при температуре 130 °С платиновая пластина полностью растворяется в течение 2 часов, что соответствует удельной скорости растворения 1500⋅10-12 г·м2/сек; скорость растворения титана и тантала в тех же условиях составила 40⋅10-12 и менее 1⋅10-12 г·м2/сек, соответственно. Создание окислительных условий способствует пассивации тантала и, в значительной степени, титана. Платина, наоборот, в окислительных условиях интенсивно переходит в раствор. С учетом того, что в большинстве случаев сырье МПГ представляет собой дисперсные порошки с высокой удельной поверхностью, титановое оборудование может быть рекомендовано к их переработке. Установлено, что титан достаточно стабилен в присутствии окислителя в растворах 3М соляной кислоты до температуры 160 °С. Тантал в солянокислых окислительных средах стабилен до температуры 200 °С. Полученные в работе количественные данные могут быть использованы для разработки технологий переработки сырья, содержащего металлы платиновой группы, и создания соответствующего оборудования.</p></abstract><trans-abstract xml:lang="en"><p>In modern hydrometallurgy, autoclave leaching processes are widely used, which is associated with a number of their advantages over processes occurring in open systems. In the Russian refining industry, the introduction of such technologies is difficult, and one of the reasons is the high requirements for the corrosion resistance of structural materials. In this work, the behavior of metal plates of tantalum, titanium and platinum in solutions of hydrochloric acid with additions of hydrogen peroxide under autoclave conditions was studied in the temperature range of 100-200°C. It has been shown that the specific dissolution rate of platinum under autoclave conditions is several orders of magnitude higher than the dissolution rates of titanium and tantalum under similar conditions. Thus, at a temperature of 130°C, a platinum plate dissolves completely within 2 hours, which corresponds to a specific dissolution rate of 1500·10-12 g m2/s; the dissolution rate of titanium and tantalum under the same conditions was 40·10-12 and less than 1·10-12 g·m2/s, respectively. The creation of oxidizing conditions promotes the passivation of tantalum and, to a large extent, titanium. Platinum, on the contrary, under oxidizing conditions intensively goes into solution. Taking into account the fact that in most cases PGM raw materials are dispersed powders with a high specific surface area, titanium equipment can be recommended for their processing. It has been established that titanium is quite stable in the presence of an oxidizing agent in solutions of 3 M hydrochloric acid up to a temperature of 160°C. Tantalum in hydrochloric acid oxidizing environments is stable up to a temperature of 200°C. The quantitative data obtained in the work can be used to develop technologies for processing raw materials containing platinum group metals and to create corresponding equipment.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>автоклав</kwd><kwd>благородные металлы</kwd><kwd>титан</kwd><kwd>тантал</kwd><kwd>скорость растворения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>autoclave</kwd><kwd>precious metals</kwd><kwd>titanium</kwd><kwd>tantalum</kwd><kwd>dissolution rate</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">Roux J.O., du Toit M., Shklaz D. Novel redesign of a pressure leach autoclave by a South African platinum producer // Journal of the Southern African Institute of Mining and Metallurgy. 2009. V. 109. №. 11. P. 677–683.</mixed-citation><mixed-citation xml:lang="en">Roux J.O., du Toit M., Shklaz D. 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