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  <front>
    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-5672</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/5672</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Без раздела</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Without section</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Causes and significance of inflections in hydrocyclone efficiency curves</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Причины и значение изгибов в кривых эффективности гидроциклона</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Andreev</surname>
            <given-names>E. E.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Андреев</surname>
              <given-names>Е. Е.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Andreev</surname>
              <given-names>E. E.</given-names>
            </name>
          </name-alternatives>
          <email>opilvv@mail.ru</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Национальный минерально-сырьевой университет «Горный» (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">National Mineral Resources University (Mining University) (Saint-Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Lvov</surname>
            <given-names>V. V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Львов</surname>
              <given-names>В. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Lvov</surname>
              <given-names>V. V.</given-names>
            </name>
          </name-alternatives>
          <email>opilvv@mail.ru</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Национальный минерально-сырьевой университет «Горный» (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">National Mineral Resources University (Mining University) (Saint-Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Fadina</surname>
            <given-names>A. V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Фадина</surname>
              <given-names>А. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Fadina</surname>
              <given-names>A. V.</given-names>
            </name>
          </name-alternatives>
          <email>fadina2101@rambler.ru</email>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Национальный минерально-сырьевой университет «Горный» (Санкт-Петербург, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">National Mineral Resources University (Mining University) (Saint-Petersburg, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2013-04-29">
        <day>29</day>
        <month>04</month>
        <year>2013</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2013</year>
      </pub-date>
      <volume>202</volume>
      <fpage>131</fpage>
      <lpage>136</lpage>
      <history>
        <date date-type="received" iso-8601-date="2012-09-28">
          <day>28</day>
          <month>09</month>
          <year>2012</year>
        </date>
        <date date-type="accepted" iso-8601-date="2012-11-11">
          <day>11</day>
          <month>11</month>
          <year>2012</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2013-04-29">
          <day>29</day>
          <month>04</month>
          <year>2013</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2013 Е. Е. Андреев, В. В. Львов, А. В. Фадина</copyright-statement>
        <copyright-statement xml:lang="en">© 2013 E. E. Andreev, V. V. Lvov, A. V. Fadina</copyright-statement>
        <copyright-year>2013</copyright-year>
        <copyright-holder xml:lang="ru">Е. Е. Андреев, В. В. Львов, А. В. Фадина</copyright-holder>
        <copyright-holder xml:lang="en">E. E. Andreev, V. V. Lvov, A. V. Fadina</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/5672">https://pmi.spmi.ru/pmi/article/view/5672</self-uri>
      <abstract xml:lang="ru">
        <p>Отклонения формы кривых эффективности гидроциклона от идеальной S-формы, или так называемые изгибы, были давно рассмотрены и представлены в различных литературных источниках. Эти изгибы могут быть разделены на две категории: «грубые» изгибы, которые вызваны различиями в плотности разделяемых полезных ископаемых, и «незначительные» изгибы, причины которых объясняются множеством конкурирующих гипотез. Существующая литература обращается либо к незначительному, либо к грубому изгибу, при этом случай их одновременного возникновения не был изучен. В данной работе представлены результаты внутризаводских исследований и лабораторных экспериментов гидроциклона, которые показывают и грубые, и незначительные изгибы, а также рассмотрено практическое значение обоих типов изгибов.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Deviations of the shape of hydrocyclone efficiency curves from the ideal S-shape have long been reported, appearing as changes in slope, or inflections. These inflections can be divided into two categories: coarse inflections, which are caused by differences in density of the minerals being separated, and fine inflections, for which there are a number of competing hypotheses concerning their cause. The existing literature addresses either the fine inflection or the coarse inflection, but no papers have reported both types of inflection occurring at once. This paper presents hydrocyclone results from both in-plant studies and laboratory experiments that show both coarse and fine inflections and the industrial significance of both types of inflections are discussed.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>гидроциклон</kwd>
        <kwd>кривая эффективности</kwd>
        <kwd>«грубый» изгиб</kwd>
        <kwd>«незначительный» изгиб</kwd>
        <kwd>внутризаводские исследования</kwd>
        <kwd>лабораторные эксперименты</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>hydrocyclone</kwd>
        <kwd>efficiency curve</kwd>
        <kwd>coarse inflection</kwd>
        <kwd>fine inflection</kwd>
        <kwd>laboratory experiments</kwd>
        <kwd>in-plant studies</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body/>
  <back>
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        <label>1</label>
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  </back>
</article>
