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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">cvmet</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Цветная металлургия</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya. Non-Ferrous Metallurgy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3438</issn><issn pub-type="epub">2412-8783</issn><publisher><publisher-name>НИТУ МИСИС</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/0021-3438-2024-4-33-42</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1645</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>Металлургия цветных металлов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Metallurgy of Non-Ferrous Metals</subject></subj-group></article-categories><title-group><article-title>Переработка халькопиритового концентрата с применением сульфатизирующего обжига</article-title><trans-title-group xml:lang="en"><trans-title>Processing of chalcopyrite concentrate by sulfating roasting</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0281-5284</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколов</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolov</surname><given-names>A. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Артем Юрьевич Соколов – к.т.н., мл. науч. сотрудник</p><p>184209, г. Апатиты, ул. Академгородок, 26а</p></bio><bio xml:lang="en"><p>Artem Yu. Sokolov – Cand. Sci. (Eng.), Junior Researcher</p><p>26a Akademgorodok Str., Apatity 184209</p></bio><email xlink:type="simple">aiu.sokolov@ksc.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/0000-0001-7694-0910</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Касиков</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kasikov</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Георгиевич Касиков – к.х.н., вед. науч. сотрудник</p><p>184209, г. Апатиты, ул. Академгородок, 26а</p></bio><bio xml:lang="en"><p>Alexandr G. Kasikov – Cand. Sci. (Chem.), Leading Researcher</p><p>26a Akademgorodok Str., Apatity 184209</p></bio><email xlink:type="simple">a.kasikov@ksc.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 технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Tananaev Institute of Chemistry of the Kola Science Centre of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>20</day><month>12</month><year>2024</year></pub-date><volume>30</volume><issue>4</issue><fpage>33</fpage><lpage>42</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Соколов А.Ю., Касиков А.Г., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Соколов А.Ю., Касиков А.Г.</copyright-holder><copyright-holder xml:lang="en">Sokolov A.Y., Kasikov A.G.</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://cvmet.misis.ru/jour/article/view/1645">https://cvmet.misis.ru/jour/article/view/1645</self-uri><abstract><p>Халькопирит (CuFeS2) является одним из основных минералов, перерабатываемых в промышленном масштабе для получения меди, который зачастую превалирует в медных концентратах, поступающих на последующую пирометаллургическую переработку. В работе показана возможность эффективного и селективного выделения меди из халькопиритового концентрата с применением сульфатизирующего обжига, сернокислотного выщелачивания и жидкостной экстракции. Установлено, что при температуре обжига 700 °С в течение 1,5 ч происходит полное разложение халькопирита с образованием гематита (Fe2O3) и халькоцианита (CuSO4). В результате выщелачивания огарка раствором серной кислоты концентрацией 0,02 М в водную фазу переходит большая часть меди, в то время как железо концентрируется в твердом остатке. Кроме того, в результате выщелачивания огарка в остатке концентрируются и благородные металлы, содержание которых составляет, г/т: Pd – 41,61, Pt – 5,65, Ag – 96,22, Au – 4,81. Очистка раствора выщелачивания от железа посредством жидкостной экстракции ди-2-этилгексилфосфорной кислотой показала высокую эффективность: при использовании 25 %-ного раствора экстрагента при соотношении О : В = 1 : 1 на двух ступенях концентрация железа в водной вазе снижается с 3,05 до 0,01 г/дм3, а при О : В = 1 : 2 на четырех ступенях – до 0,006 г/дм3. После железоочистки и упаривания раствора получен медный купорос, содержащий, %: CuSO4·5H2O – 99,84 (в пересчете на медь – 25,42), Ni – 0,014, Al – 0,007, Fe – 0,0003, As – 0,0002.</p></abstract><trans-abstract xml:lang="en"><p>Chalcopyrite (CuFeS2) is one of the primary minerals processed on an industrial scale for copper production and often dominates copper concentrates sent for pyrometallurgical processing. This study demonstrates the efficient and selective extraction of copper from chalcopyrite concentrate through sulfating roasting, sulfuric acid leaching, and solvent extraction. At a roasting temperature of 700 °C for 1.5 h, chalcopyrite fully decomposes into hematite (Fe2O3) and chalcanthite (CuSO4). Leaching the calcine with a 0.02 M sulfuric acid solution transfers most of the copper to the aqueous phase, while iron concentrates in the solid residue. Additionally, precious metals concentrate in the residue after leaching of the calcine, with the following content in g/t: Pd – 41.61, Pt – 5.65, Ag – 96.22, Au – 4.81. The removal of iron from the leach solution using solvent extraction with di-2-ethylhexyl phosphoric acid was highly effective: with a 25 % extractant solution and an organicto-aqueous ratio of 1:1 over two stages, the iron concentration in the aqueous phase dropped from 3.05 to 0.01 g/dm3, and with an organic-toaqueous ratio of 1:2 over four stages, it decreased to 0.006 g/dm3. After iron purification and solution evaporation, copper sulfate was obtained with the following composition (%): CuSO4·5H2O – 99.84 (equivalent to 25.42 % copper), Ni – 0.014, Al – 0.007, Fe – 0.0003, As – 0.0002.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>медный концентрат</kwd><kwd>халькопирит</kwd><kwd>обжиг</kwd><kwd>медь</kwd><kwd>железо</kwd><kwd>экстракция</kwd><kwd>благородные металлы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>copper concentrate</kwd><kwd>chalcopyrite</kwd><kwd>roasting</kwd><kwd>copper</kwd><kwd>iron</kwd><kwd>extraction</kwd><kwd>precious metals</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">Faris N., Rama R., Chena M., Tardio J., Pownceby M.I., Jones L.A., McMaster S., Webster N.A.S., Bhargava S. The effect of thermal pre-treatment on the dissolution of chalcopyrite (CuFeS2) in sulfuric acid media. 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