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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="edn" pub-id-type="custom">XMIQWH</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16138</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16138</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геотехнология и инженерная геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geotechnical Engineering and Engineering Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Study on the thin layer drying and diffusion mechanism of low rank coal  in Inner Mongolia and Yunnan</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Изучение механизма тонкослойной сушки и диффузии низкосортного угля Внутренней Монголии и провинции Юньнань</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Wang</surname>
            <given-names>Cheng </given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Ван</surname>
              <given-names>Чхэн </given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Wang</surname>
              <given-names>Cheng </given-names>
            </name>
          </name-alternatives>
          <email>vc1995@cumt.edu.cn</email>
          <contrib-id contrib-id-type="orcid">0009-0002-6216-6631</contrib-id>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Горно-технологический факультет химического машиностроения Китайского университета (Сюйчжоу, Китай)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">China University of Mining and Technology School of Chemical Engineering (Xuzhou, China)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Wang</surname>
            <given-names>Dan </given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Ван</surname>
              <given-names>Дань </given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Wang</surname>
              <given-names>Dan </given-names>
            </name>
          </name-alternatives>
          <email>wangdan@cumt.edu.cn</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Горно-технологический факультет химического машиностроения Китайского университета (Сюйчжоу, Китай)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">China University of Mining and Technology School of Chemical Engineering (Xuzhou, China)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Chen</surname>
            <given-names>Zengqiang </given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Чхэнь</surname>
              <given-names>Цзэнциен </given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Chen</surname>
              <given-names>Zengqiang </given-names>
            </name>
          </name-alternatives>
          <email>chenzq90@163.com</email>
          <contrib-id contrib-id-type="orcid">0000-0002-0679-0993</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Лаборатория переработки угля и эффективного чистого использования Министерства образования, Китайский горно-технологический университет (Сюйчжоу, Китай)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Key Laboratory of Coal Processing and Efficient Clean Utilization of Ministry of Education, China University of Mining and Technology (Xuzhou, China)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Duan</surname>
            <given-names>Chenlong </given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Дуань</surname>
              <given-names>Чхэньлун </given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Duan</surname>
              <given-names>Chenlong </given-names>
            </name>
          </name-alternatives>
          <email>clduan@cumt.edu.cn</email>
          <contrib-id contrib-id-type="orcid">0000-0002-8093-6719</contrib-id>
          <xref ref-type="aff" rid="aff4"/>
        </contrib>
        <aff-alternatives id="aff4">
          <aff>
            <institution xml:lang="ru">Лаборатория переработки угля и эффективного чистого использования Министерства образования, Китайский горно-технологический университет (Сюйчжоу, Китай)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Key Laboratory of Coal Processing and Efficient Clean Utilization of Ministry of Education, China University of Mining and Technology (Xuzhou, China)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Zhou</surname>
            <given-names>Chenyang </given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Чжоу</surname>
              <given-names>Чхэньян </given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Zhou</surname>
              <given-names>Chenyang </given-names>
            </name>
          </name-alternatives>
          <email>Zhoucy@cumt.edu.cn</email>
          <contrib-id contrib-id-type="orcid">0000-0002-5393-4240</contrib-id>
          <xref ref-type="aff" rid="aff5"/>
        </contrib>
        <aff-alternatives id="aff5">
          <aff>
            <institution xml:lang="ru">Лаборатория переработки угля и эффективного чистого использования Министерства образования, Китайский горно-технологический университет (Сюйчжоу, Китай)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Key Laboratory of Coal Processing and Efficient Clean Utilization of Ministry of Education, China University of Mining and Technology (Xuzhou, China)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2024-02-05">
        <day>05</day>
        <month>02</month>
        <year>2024</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2024</year>
      </pub-date>
      <volume>266</volume>
      <fpage>326</fpage>
      <lpage>338</lpage>
      <history>
        <date date-type="received" iso-8601-date="2023-01-16">
          <day>16</day>
          <month>01</month>
          <year>2023</year>
        </date>
        <date date-type="accepted" iso-8601-date="2023-06-20">
          <day>20</day>
          <month>06</month>
          <year>2023</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2024-04-25">
          <day>25</day>
          <month>04</month>
          <year>2024</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2024 Чхэн  Ван, Дань  Ван, Цзэнциен  Чхэнь, Чхэньлун  Дуань, Чхэньян  Чжоу</copyright-statement>
        <copyright-statement xml:lang="en">© 2024 Cheng  Wang, Dan  Wang, Zengqiang  Chen, Chenlong  Duan, Chenyang  Zhou</copyright-statement>
        <copyright-year>2024</copyright-year>
        <copyright-holder xml:lang="ru">Чхэн  Ван, Дань  Ван, Цзэнциен  Чхэнь, Чхэньлун  Дуань, Чхэньян  Чжоу</copyright-holder>
        <copyright-holder xml:lang="en">Cheng  Wang, Dan  Wang, Zengqiang  Chen, Chenlong  Duan, Chenyang  Zhou</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/16138">https://pmi.spmi.ru/pmi/article/view/16138</self-uri>
      <abstract xml:lang="ru">
        <p>Китай богат угольными ресурсами, на долю которых приходится более 90 % всех установленных запасов ископаемого топлива, при этом доля потребления угольной энергии достигла в 2021 г. 56,5 %. В качестве объекта исследования был выбран низкосортный уголь, поступающий из Внутренней Монголии (образцы NM) и провинции Юньнань (образцы YN). Характеристики потери массы образцов были изучены с использованием термогравиметрического анализа для определения подходящей температуры для экспериментов по сушке, поскольку высокая влажность низкосортного угля может легко вызвать остановку оборудования в процессе сухой сортировки. Эксперименты по тонкослойной сушке проводились при различных температурных условиях. Эффективный коэффициент диффузии влаги подбиралcя по уравнению Аррениуса, для образцов NM он составил 5,07·10–11 - 9,58·10–11 м2/с; для трех разных размеров частиц образцов YN – 1,89·10–11 - 4,92·10–11 (крупность –1 мм), 1,38·10–10 - 4,13·10–10 (крупность 1-3 мм), 5,26·10–10 - 1,49·10–9 (крупность 3-6 мм). Энергия активации образцов из Внутренней Монголии составила 10,97 кДж/моль (крупность –1 мм); для образцов из провинции Юньнань – 17,97 кДж/моль (крупность –1 мм), 33,52 кДж/моль (крупность 1-3 мм) и 38,64 кДж/моль (крупность 3-6 мм). Процесс сушки был смоделирован по эмпирическим и полуэмпирическим формулам. Установлено, что оптимальными моделями для образцов Внутренней Монголии является двухкомпонентная модель диффузии, а для образцов из провинции Юньнань – уравнение Hii.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>Coal is one of the world's most important energy substances. China is rich in coal resources, accounting for more than 90 % of all ascertained fossil energy reserves. The consumption share of coal energy reaches 56.5 % in 2021. Due to the high moisture content of low-rank coal, it is easy to cause equipment blockage in the dry sorting process. This paper considers low-rank coal coming from Inner Mongolia (NM samples) and Yunnan (YN samples). The weight loss performance of the samples was analyzed using thermogravimetric experiments to determine the appropriate temperature for drying experiments. Thin-layer drying experiments were carried out at different temperature conditions. The drying characteristics of low-rank coal were that the higher the drying temperature, the shorter the drying completion time; the smaller the particle size, the shorter the drying completion time. The effective moisture diffusion coefficient was fitted using the Arrhenius equation. The effective water diffusion coefficient of NM samples was 5.07·10–11 - 9.58·10–11 m2/s. The effective water diffusion coefficients of the three different particle sizes of YN samples were 1.89·10–11 - 4.92·10–11 (–1 mm), 1.38·10–10 - 4.13·10–10 (1-3 mm), 5.26·10–10 - 1.49·10–9 (3-6 mm). The activation energy of Inner Mongolia lignite was 10.97 kJ/mol (–1 mm). The activation energies of Yunnan lignite with different particle sizes were 17.97 kJ/mol (–1 mm), 33.52 kJ/mol (1-3 mm), and 38.64 kJ/mol (3-6 mm). The drying process was simulated using empirical and semi-empirical formulas. The optimal model for Inner Mongolia samples was the Two-term diffusion model, and Yunnan samples were the Hii equation was used.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>уголь низкого качества</kwd>
        <kwd>тонкослойная сушка</kwd>
        <kwd>характеристики сушки</kwd>
        <kwd>кинетический анализ</kwd>
        <kwd>моделирование примерки</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>low-quality coal</kwd>
        <kwd>thin-layer drying</kwd>
        <kwd>drying characteristics</kwd>
        <kwd>kinetic analysis</kwd>
        <kwd>fitting simulation</kwd>
      </kwd-group>
      <funding-group>
        <funding-statement xml:lang="ru">Исследовательская работа финансируется Национальным фондом Китая для выдающихся молодых ученых (№ 52125403), Фондом естественных наук провинции Цзянсу (№ BK20200651), Национальным фондом естественных наук Китая (№ 52104276, № 52261135540, № 52220105008), Международной программой стипендий по обмену сотрудников с ученой степенью (№ PC2021086), Инновационной программой для выпускников Китайского горно-технологического университета (№ 2022WLJCRCZL057), Инновационной программой последипломных исследований и практики провинции Цзянсу (№ SJCX22_1149).</funding-statement>
        <funding-statement xml:lang="en">The research work is financially supported by China National Funds for Distinguished Young  Scientists (N 52125403), Natural Science Foundation of Jiangsu Province (N BK20200651), National Natural Science Foundation of China (N 52104276, N 52261135540, N 52220105008), International Postdoctoral Exchange Fellowship  Program (N PC2021086), The Graduate Innovation Program of China University of Mining and Technology (N 2022WLJCRCZL057), The Postgraduate Research and Practice Innovation Program of Jiangsu Province (N SJCX22_1149).</funding-statement>
      </funding-group>
    </article-meta>
  </front>
  <body/>
  <back>
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