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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">10.17073/0021-3438-2025-1-5-13</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1654</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>Полупромышленные испытания переработки окисленных медных руд месторождения Эрдэнэтийн Овоо методом кучного выщелачивания</article-title><trans-title-group xml:lang="en"><trans-title>Pilot tests for processing oxidized copper ores from the Erdenetiin Ovoo deposit using heap leaching</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>Гантулга</surname><given-names>С.</given-names></name><name name-style="western" xml:lang="en"><surname>Gantulga</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Самбуу Гантулга – магистр технических наук, ведущий инженер Проектной единицы, Производственно-технологический парк</p><p>61027, Орхонский аймак, г. Эрдэнэт, Площадь Дружбы</p></bio><bio xml:lang="en"><p>Sambuu Gantulga – Master of science in engineering, Senior Engineer of the Technological park project unit</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>Цэнд-Аюуш</surname><given-names>Ц.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsend-Ayush</surname><given-names>Ts.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цэрэндагва Цэнд-Аюуш – к.т.н, начальник отдела раз- вития </p><p>61027, Орхонский аймак, г. Эрдэнэт, Площадь Дружбы</p></bio><bio xml:lang="en"><p>Tserendagva Tsend-Ayush – Ph.D, Head of the Development Department</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8414-9114</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алтантуяа</surname><given-names>Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Altantuyaа</surname><given-names>B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бямбасурэн Алтантуяа – к.т.н., профессор, преподаватель кафедры геологии и горной промышленности</p><p>14191, Улан-Батор, ул. Сухэбатора, 34</p></bio><bio xml:lang="en"><p>Byambasuren Altantuyaа – Ph.D, Professor, Lecturer of the Institute of geology and mining engineering</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4458-3792</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мамяченков</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mamyachenkov</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Владимирович Мамяченков – д.т.н., заведующий кафедрой металлургии цветных металлов</p><p>620002, г. Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Sergey V. Mamyachenkov – Dr. Sci. (Eng.), Head of the Department of metallurgy of non-ferrous metals</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ПГС «Предприятие Эрдэнэт»</institution><country>Монголия</country></aff><aff xml:lang="en"><institution>SOE “Erdenet Enterprise”</institution><country>Mongolia</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Монгольский университет науки и технологии</institution><country>Монголия</country></aff><aff xml:lang="en"><institution>Mongolian University of Science and Technology</institution><country>Mongolia</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Уральский федеральный университет им. первого Президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University n.a. the First President of Russia B.N. Eltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>18</day><month>03</month><year>2025</year></pub-date><volume>0</volume><issue>1</issue><fpage>5</fpage><lpage>13</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гантулга С., Цэнд-Аюуш Ц., Алтантуяа Б., Мамяченков С.В., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Гантулга С., Цэнд-Аюуш Ц., Алтантуяа Б., Мамяченков С.В.</copyright-holder><copyright-holder xml:lang="en">Gantulga S., Tsend-Ayush T., Altantuyaа B., Mamyachenkov S.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://cvmet.misis.ru/jour/article/view/1654">https://cvmet.misis.ru/jour/article/view/1654</self-uri><abstract><p>В современных условиях сокращения запасов богатых медных сульфидных руд источником минерального сырья, содержащего цветные и благородные металлы, становятся окисленные руды. При их переработке традиционным флотационным методом получают низкосортные концентраты при низком (40–60 %) извлечении металлов. Наиболее перспективным направлением переработки подобных руд является кучное выщелачивание. В результате многолетней интенсивной эксплуатации месторождения Эрдэнэтийн Овоо (г. Эрдэнэт, Монголия) в контуре карьера накоплено около 800 млн т отвалов окисленной руды со средним содержанием меди 0,45–0,48 %. Мировой опыт переработки такого техногенного сырья показывает высокую экономическую эффективность извлечения меди методом кучного выщелачивания с последующим извлечением меди из продуктивного раствора по технологии «экстракция–электролиз». Для ПГС «Предприятие Эрдэнэт» актуально проведение исследований выщелачивания окисленных руд и укрупненных испытаний технологии на руде существующих отвалов. Для решения поставленной задачи в отвалах пробурено 35 скважин (16 – в отвале № 8а и 19 – в отвале № 12), из которых получены керновые пробы. Изучен минералогический состав проб окисленной медной руды, определено влияние условий кучного выщелачивания (крупности руды, кислотности раствора и др.) на показатели перевода меди в продуктивный раствор. Для более точного определения количества меди, которое можно получить методом выщелачивания из двух отвалов, из каждой скважины отобрана составная (композитная) проба и в 30 колоннах проведены укрупненные испытания кучного выщелачивания в открытом цикле. В результате этих испытаний для отвала № 8а извлечение меди составило от 35,8 до 69,1 % (среднее значение – 56,0 %), а для отвала № 12 – варьировалось в диапазоне 51,8–77,4 % (среднее значение – 63,6 %). </p></abstract><trans-abstract xml:lang="en"><p>In the current context of declining reserves of high-grade copper sulfide ores, oxidized ores are becoming an important source of mineral raw materials containing non-ferrous and precious metals. Traditional flotation processing of these ores results in low-grade concentrates with poor metal extraction rates (40–60 %). Heap leaching is considered the most promising method for processing such ores. As a result of prolonged intensive mining at the Erdenetiin Ovoo deposit (Erdenet, Mongolia), approximately 800 million tonnes of oxidized ore dumps with an average copper content of 0.45–0.48 % have accumulated within the open-pit boundary. Global experience in processing such secondary raw materials demonstrates the high economic efficiency of copper extraction through heap leaching, followed by solvent extraction and electrowinning (SX-EW) of copper from the pregnant leach solution. For the State-owned Enterprise Erdenet, it is essential to conduct leaching studies on oxidized ores and pilot testing of this technology on the ore from existing ore dumps. To achieve this, 35 boreholes were drilled in the dumps (16 in dump No. 8a and 19 in dump No. 12), from which core samples were collected. The mineralogical composition of the oxidized copper ore samples was analyzed, and the effect of heap leaching parameters (ore particle size, solution acidity, etc.) on copper recovery into the pregnant leach solution was determined. To more accurately assess the recoverable copper from the two dumps, composite samples were collected from each borehole, and large-scale heap leaching tests were conducted in 30 open-cycle columns. The test results showed that copper extraction rate from dump No. 8a ranged from 35.8 % to 69.1 %, with an average of 56.0 %, while dump No. 12 exhibited extraction rates ranging from 51.8 % to 77.4 %, with an average of 63.6 %.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>окисленная медная руда Эрдэнэтийн Овоо</kwd><kwd>минералогический анализ</kwd><kwd>кучное выщелачивание</kwd><kwd>расход серной кислоты</kwd><kwd>крупность</kwd><kwd>извлечение меди</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Erdenetiin Ovoo oxidized copper ore</kwd><kwd>mineralogical analysis</kwd><kwd>heap leaching</kwd><kwd>sulfuric acid consumption</kwd><kwd>particle size</kwd><kwd>copper extraction</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">Пурэвдаш М. 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