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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">10.17073/0021-3438-2021-1-4-15</article-id><article-id custom-type="elpub" pub-id-type="custom">cvmet-1214</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>Обогащение руд цветных металлов</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Mineral Processing of Non-Ferrous Metals</subject></subj-group></article-categories><title-group><article-title>Гравитационно-флотационное обогащение золотосодержащей руды</article-title><trans-title-group xml:lang="en"><trans-title>Gravity-flotation gold-bearing ore concentration</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>Федотов</surname><given-names>П. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedotov</surname><given-names>P. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, проф. кафедры «Обогащение полезных ископаемых и охрана окружающей среды» им. С.Б. Леонова</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), prof. of the Department of mineral processing and environmental protection</p><p>664074, Russia, Irkutsk, Lermontov str., 83</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>Сенченко</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Senchenko</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ген. директор</p><p>664074, г. Иркутск, ул. Лермонтова, 83/1</p><p> </p></bio><bio xml:lang="en"><p>general director</p><p>664074, Russia, Irkutsk, Lermontov str., 83/1</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Федотов</surname><given-names>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Fedotov</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. техн. наук, проф., зав. кафедрой «Обогащение полезных ископаемых и охрана окружающей среды» им. С.Б. Леонова</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Dr. Sci. (Eng.), prof., head of the Department of mineral processing and environmental protection</p><p>664074, Russia, Irkutsk, Lermontov str., 83</p></bio><email xlink:type="simple">senchenko@tomsmineral.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>Бурдонов</surname><given-names>А. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Burdonov</surname><given-names>A. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. техн. наук, доцент кафедры «Обогащение полезных ископаемых и охрана окружающей среды» им. С.Б. Леонова</p><p>664074, г. Иркутск, ул. Лермонтова, 83</p></bio><bio xml:lang="en"><p>Cand. Sci. (Eng.), associate prof. of the Department of mineral processing and environmental protection</p><p>664074, Russia, Irkutsk, Lermontov str., 83</p></bio><email xlink:type="simple">slimbul@inbox.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Иркутский национальный исследовательский технический университет (ИРНИТУ)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Irkutsk National Research Technical University (INRTU)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО НИИПИ «Технология обогащения минерального сырья»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>LLC Research and Development Institute «Technology of mineral raw materials processing» (Institute TOMS)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>10</day><month>02</month><year>2021</year></pub-date><volume>1</volume><issue>1</issue><fpage>4</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Федотов П.К., Сенченко А.Е., Федотов К.В., Бурдонов А.Е., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Федотов П.К., Сенченко А.Е., Федотов К.В., Бурдонов А.Е.</copyright-holder><copyright-holder xml:lang="en">Fedotov P.K., Senchenko A.E., Fedotov K.V., Burdonov A.E.</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/1214">https://cvmet.misis.ru/jour/article/view/1214</self-uri><abstract><p>Работа посвящена исследованию обогатимости золотосодержащей руды. Согласно технологическим исследованиям, среднее содержание золота составило 11,88 г/т. Содержание серебра незначительное – 2,43 г/т. Основными рудными минералами пробы являются пирит и пирротин. Среднее содержание этих минералов в руде, по данным минералогического и рентгеноструктурного анализов, составило около 6 % (в сумме). Основные породообразующие минералы исходной руды – кварц (60,1 %), кварц–хлорит-слюдистые агрегаты (3,8 %), карбонаты (7,1 %). По результатам исследования установлено, что извлечение золота при выполнении теста GRG составило 72,75 % при выходе суммарного концентрата 1,34 % и содержании 664,78 г/т. При этом содержание золота в хвостах – 3,29 г/т. Стадиальный тест показал, что для переработки руды только по гравитационной технологии целесообразно применение двухстадиальной схемы. Первая стадия – в цикле измельчения при крупности руды 60–70 %, вторая – при конечной крупности слива классификации 90 % –0,071 мм. Центробежная сепарация, как операция извлечения свободного золота в цикле измельчения, работает эффективно. Получен концентрат с содержанием золота 2426 г/т при выходе 0,31 % и извлечении 63,74 %. Обогащение измельченных до 90 % –0,071 мм хвостов первой стадии на концентраторе КС-CVD (моделирование) позволило получить извлечение золота в суммарный гравитационный концентрат (KC-MD + KC-CVD) 87,25 % при выходе концентрата 22,63 %. Содержание золота в хвостах составило 1,97 г/т. Результаты гравитационного и флотационного обогащения исходной руды свидетельствуют о целесообразности применения комбинированной гравитационно-флотационной технологической схемы. В замкнутом опыте обогащения исходной руды по этой схеме при естественном значении рН пульпы (без добавления кислоты) получены следующие продукты: гравитационный концентрат с содержанием золота 2426 г/т при выходе 0,31 % и извлечении 64,06 %; флотационный концентрат (после II перечистки) с содержанием золота 122 г/т при выходе 2,90 % и извлечении 33,01 %; суммарное извлечение золота в гравитационно-флотационный концентрат составило 94,07 % при выходе 3,21 % и содержании Au 345,87 г/т, содержание золота в хвостах флотации было 0,72 г/т.</p></abstract><trans-abstract xml:lang="en"><p>The paper focuses on the study of the gold-bearing ore dressability. According to technological research, the average gold content is 11.88 g/t. The silver content is insignificant – 2.43 g/t. Main ore minerals in the sample are pyrite and pyrrhotite. According to mineralogical and X-ray structural analysis, the average content of these minerals in the ore is about 6 % (in total). Main rock-forming minerals of the original ore are: quartz (60.1 %), quartz-chlorite-mica aggregates (3.8 %), carbonates (7.1 %). According to the study results, it was found that the gold recovery in the GRG test was 72.75 % with a total concentrate yield of 1.34 % and a content of 664.78 g/t. At the same time, the gold content in tailings was 3.29 g/t. A stage test showed that it is advisable to use a two-stage scheme for ore processing by gravity technology only. The first stage is in the grinding cycle with the 60–70 % ore size, and the second stage is with the final classifier overflow size of 90 % –0.071 mm. Centrifugal separation has high performance as a free gold recovery operation in the grinding cycle. A concentrate with a gold content of 2426 g/t was obtained with a yield of 0.31 % and a recovery of 63.74 %. The beneficiation of first stage tailings ground to 90 % –0.071 mm at the KC-CVD concentrator (modeling) made it possible to extract gold into a total gravity concentrate (KC-MD + KC-CVD) of 87.25 % with a concentrate yield of 22.63 %. The gold content in tailings was 1.97 g/t. The results of gravity and flotation concentration of the original ore indicate the feasibility of using a combined gravity-flotation technological scheme. In a closed experiment of the initial ore beneficiation according to the gravity-flotation scheme at a natural pH of the pulp (without adding acid), the following products were obtained: gravity concentrate with a gold content of 2426 g/t at a yield of 0.31 % and recovery of 64.06 %; flotation concentrate (after the II cleaning) with a gold content of 122 g/t at a yield of 2.90 % and recovery of 33.01 %; the total gold recovery in the gravity-flotation concentrate was 94.07 % with a yield of 3.21 % and an Au content of 345.87 g/t, the gold content in the flotation tailings was 0.72 g/t.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>золото</kwd><kwd>обогатимость</kwd><kwd>технологические исследования</kwd><kwd>флотация</kwd><kwd>гравитация</kwd><kwd>моделирование</kwd><kwd>концентрат</kwd><kwd>хвосты</kwd><kwd>извлечение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gold</kwd><kwd>dressability</kwd><kwd>technological research</kwd><kwd>flotation</kwd><kwd>gravity concentration</kwd><kwd>modeling</kwd><kwd>concentrate</kwd><kwd>tailings</kwd><kwd>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">Fedotov P.K., Senchenko A.E., Fedotov K.V., Burdonov A.E. 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