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Washability assessment of Indian coking coal for optimized beneficiation and sustainable utilization.

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Title: Washability assessment of Indian coking coal for optimized beneficiation and sustainable utilization.
Authors: Andavarapu, Mohana Rao1 (AUTHOR) mohanrao@nmlindia.org, Sahoo, Monica1 (AUTHOR), Swain, Ajit Kumar1 (AUTHOR), Kumar, Abhishek1 (AUTHOR)
Source: International Journal of Coal Preparation & Utilization. 2026, Vol. 46 Issue 5, p1364-1379. 16p.
Subject Terms: *Coking coal, *Particle size determination, *Cleaning, *Sustainable consumption, *Clean coal technologies, *Coal
Abstract: The characterization of coal is fundamental prerequisite for designing washing circuits and achieving optimal utilization of cleaned coal products. Unlike traditional approaches, this research employs a particle size-specific washability analysis, providing a novel approach to improving coal beneficiation processes. Using Indian coking coal as a case study, the research evaluates washability characteristics across various size fractions utilizing advanced washability parameters such as Optimum Degree of Washability (ODW), Washability Number (WN), Index of Washability (IW), and Near Gravity Material Index (NGMI). Results reveal that smaller particle sizes enhance washability, with consistent ODW values suggesting uniform characteristics across sizes. Variations in WN and IW imply that finer fractions exhibit greater cleaning potential, while NGMI highlights the challenges associated with washing these finer particles. Key findings include achieving low ash content (<18%) at a specific gravity of 1.65, rendering the coal suitable for metallurgical applications. The comparison of washability parameters provides a comprehensive understanding of coal suitability for beneficiation processes and its potential to yield low ash content in cleaned coal products. These insights are pivotal for optimizing coal beneficiation processes and promoting sustainable and efficient utilization of Indian coking coal in the metallurgical industry. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 193489590
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PubTypeId: academicJournal
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  Data: Washability assessment of Indian coking coal for optimized beneficiation and sustainable utilization.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Andavarapu%2C+Mohana+Rao%22&quot;&gt;Andavarapu, Mohana Rao&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; mohanrao@nmlindia.org&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Sahoo%2C+Monica%22&quot;&gt;Sahoo, Monica&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Swain%2C+Ajit+Kumar%22&quot;&gt;Swain, Ajit Kumar&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Kumar%2C+Abhishek%22&quot;&gt;Kumar, Abhishek&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)
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– Name: Subject
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  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Coking+coal%22&quot;&gt;Coking coal&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Particle+size+determination%22&quot;&gt;Particle size determination&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Cleaning%22&quot;&gt;Cleaning&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Sustainable+consumption%22&quot;&gt;Sustainable consumption&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Clean+coal+technologies%22&quot;&gt;Clean coal technologies&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Coal%22&quot;&gt;Coal&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The characterization of coal is fundamental prerequisite for designing washing circuits and achieving optimal utilization of cleaned coal products. Unlike traditional approaches, this research employs a particle size-specific washability analysis, providing a novel approach to improving coal beneficiation processes. Using Indian coking coal as a case study, the research evaluates washability characteristics across various size fractions utilizing advanced washability parameters such as Optimum Degree of Washability (ODW), Washability Number (WN), Index of Washability (IW), and Near Gravity Material Index (NGMI). Results reveal that smaller particle sizes enhance washability, with consistent ODW values suggesting uniform characteristics across sizes. Variations in WN and IW imply that finer fractions exhibit greater cleaning potential, while NGMI highlights the challenges associated with washing these finer particles. Key findings include achieving low ash content (&lt;18%) at a specific gravity of 1.65, rendering the coal suitable for metallurgical applications. The comparison of washability parameters provides a comprehensive understanding of coal suitability for beneficiation processes and its potential to yield low ash content in cleaned coal products. These insights are pivotal for optimizing coal beneficiation processes and promoting sustainable and efficient utilization of Indian coking coal in the metallurgical industry. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/19392699.2025.2498517
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 1364
    Subjects:
      – SubjectFull: Coking coal
        Type: general
      – SubjectFull: Particle size determination
        Type: general
      – SubjectFull: Cleaning
        Type: general
      – SubjectFull: Sustainable consumption
        Type: general
      – SubjectFull: Clean coal technologies
        Type: general
      – SubjectFull: Coal
        Type: general
    Titles:
      – TitleFull: Washability assessment of Indian coking coal for optimized beneficiation and sustainable utilization.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Andavarapu, Mohana Rao
      – PersonEntity:
          Name:
            NameFull: Sahoo, Monica
      – PersonEntity:
          Name:
            NameFull: Swain, Ajit Kumar
      – PersonEntity:
          Name:
            NameFull: Kumar, Abhishek
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: 2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 19392699
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              Value: 46
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: International Journal of Coal Preparation & Utilization
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