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A comparative and characterization study of coal from different coal mines of Mahanadi Coal Fields Limited.

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Title: A comparative and characterization study of coal from different coal mines of Mahanadi Coal Fields Limited.
Authors: Mohanta, Satyabrata1 (AUTHOR), Sahoo, Brahmotri1 (AUTHOR) brahmotri.sahoo@igitsarang.ac.in
Source: International Journal of Coal Preparation & Utilization. 2026, Vol. 46 Issue 7, p2087-2103. 17p.
Subjects: Specific gravity, Coal ash, Coal preparation, Coal mining, Coal sampling, Calorie
Geographic Terms: India
Abstract: Indian non-coking coal beneficiation plays a very significant role for many coal industries, as it shows major challenges to compete in the global coal society or market. But due to the different properties of different coal from different coal mines, the targets cannot be achieved. Thus, washability studies are very much needed to know the washability behavior of different coals to increase the economy of the country. This difficulty in washing process causes due to the presence of near density materials. Thus, this study aims the washability characteristics of different Talcher area coal (Bhubaneswari coal, Hingula coal, Ananta coal, Balaram coal, Bharatpur coal and Jagannath coal) and also to characterize the inherent characteristics of different coal. Imperfection of raw coal qualities is believed to be the major cause for the lower yield of any industries. So, the importance of accurate quantification of coal has been demonstrated in this article to know its washable tendency or index of washability, indicating variation in the extent and nature of impurities associated with each coal. It was observed that the relationship between the ash content and specific gravity is linear and related with a co-efficient of multiple determination value of 0.979. The constants for the slope and intercept of the regression line were found to be −198.87 and 166.89 respectively. Highlights: The washability curve indicates the property variations from coal to coal for the Talcher Coal Fields Limited. A linear relationship is shown between the ash and carbon content and the specific gravity and hydrogen content with the coal carbon content. The constant for the equation relating to the gross calorific value, fixed carbon and volatile matter content was found to be 35. The ash content and specific gravity of different coals are linear and related with a co-efficient of multiple determination value of 0.979. No imperfection in raw coal qualities has been observed which neutralizes many major issues in many coal industries [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Coal Preparation & Utilization is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: A comparative and characterization study of coal from different coal mines of Mahanadi Coal Fields Limited.
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  Data: <searchLink fieldCode="AR" term="%22Mohanta%2C+Satyabrata%22">Mohanta, Satyabrata</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sahoo%2C+Brahmotri%22">Sahoo, Brahmotri</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> brahmotri.sahoo@igitsarang.ac.in</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Coal+Preparation+%26+Utilization%22">International Journal of Coal Preparation & Utilization</searchLink>. 2026, Vol. 46 Issue 7, p2087-2103. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Specific+gravity%22">Specific gravity</searchLink><br /><searchLink fieldCode="DE" term="%22Coal+ash%22">Coal ash</searchLink><br /><searchLink fieldCode="DE" term="%22Coal+preparation%22">Coal preparation</searchLink><br /><searchLink fieldCode="DE" term="%22Coal+mining%22">Coal mining</searchLink><br /><searchLink fieldCode="DE" term="%22Coal+sampling%22">Coal sampling</searchLink><br /><searchLink fieldCode="DE" term="%22Calorie%22">Calorie</searchLink>
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  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22India%22">India</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Indian non-coking coal beneficiation plays a very significant role for many coal industries, as it shows major challenges to compete in the global coal society or market. But due to the different properties of different coal from different coal mines, the targets cannot be achieved. Thus, washability studies are very much needed to know the washability behavior of different coals to increase the economy of the country. This difficulty in washing process causes due to the presence of near density materials. Thus, this study aims the washability characteristics of different Talcher area coal (Bhubaneswari coal, Hingula coal, Ananta coal, Balaram coal, Bharatpur coal and Jagannath coal) and also to characterize the inherent characteristics of different coal. Imperfection of raw coal qualities is believed to be the major cause for the lower yield of any industries. So, the importance of accurate quantification of coal has been demonstrated in this article to know its washable tendency or index of washability, indicating variation in the extent and nature of impurities associated with each coal. It was observed that the relationship between the ash content and specific gravity is linear and related with a co-efficient of multiple determination value of 0.979. The constants for the slope and intercept of the regression line were found to be −198.87 and 166.89 respectively. Highlights: The washability curve indicates the property variations from coal to coal for the Talcher Coal Fields Limited. A linear relationship is shown between the ash and carbon content and the specific gravity and hydrogen content with the coal carbon content. The constant for the equation relating to the gross calorific value, fixed carbon and volatile matter content was found to be 35. The ash content and specific gravity of different coals are linear and related with a co-efficient of multiple determination value of 0.979. No imperfection in raw coal qualities has been observed which neutralizes many major issues in many coal industries [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Coal Preparation & Utilization is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1080/19392699.2025.2526561
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 17
        StartPage: 2087
    Subjects:
      – SubjectFull: Specific gravity
        Type: general
      – SubjectFull: Coal ash
        Type: general
      – SubjectFull: Coal preparation
        Type: general
      – SubjectFull: Coal mining
        Type: general
      – SubjectFull: Coal sampling
        Type: general
      – SubjectFull: Calorie
        Type: general
      – SubjectFull: India
        Type: general
    Titles:
      – TitleFull: A comparative and characterization study of coal from different coal mines of Mahanadi Coal Fields Limited.
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            NameFull: Mohanta, Satyabrata
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            NameFull: Sahoo, Brahmotri
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          Dates:
            – D: 01
              M: 07
              Text: 2026
              Type: published
              Y: 2026
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            – TitleFull: International Journal of Coal Preparation & Utilization
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