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Characterization of solid particles with different particle sizes in high-temperature coal tar pitch.

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Title: Characterization of solid particles with different particle sizes in high-temperature coal tar pitch.
Authors: Zhao, Yiting1 (AUTHOR), Yang, Jingdong1 (AUTHOR), Li, Gang1 (AUTHOR), Gao, Long1 (AUTHOR), Zhang, Haiyong1 (AUTHOR), Wang, Yonggang1 (AUTHOR) wyg1960@126.com
Source: International Journal of Coal Preparation & Utilization. 2026, Vol. 46 Issue 1, p187-210. 24p.
Subject Terms: *Particle size determination, *Scanning electron microscopy, *Bulk solids, *Surface area, *Carbon, *Coal tar
Abstract: High-temperature coal tar pitch (HCTP) serves as a crucial precursor for high-quality carbon materials, while solid particle (SP) characteristics significantly influence the properties of the pitch. This study explores the compositional differences of SPs across various sizes to facilitate their effective separation. We employed ultrasonic graded centrifugation to isolate seven SP types of different sizes and analyzed their properties using SEM, SEM-EDS plane scanning, laser particle size analysis (LPSA), organic element analysis (EA), FT-IR, ICP-MS, and XRD. Our results reveal distinct variations in the SP distribution by particle size. As the particle size decreases, the proportion of particles in the 1–100 μm range decreases, while ultrafine particles (0.01–0.1 μm) become more prevalent. The carbon content in SPs initially increases and then decreases with smaller particle sizes, reaching a peak in medium-sized particles. Non-carbon impurities such as Si, S, Zn, Pb, Ca, Fe, and inorganic ash are concentrated in larger particles (SP1–SP2) and smaller particles (SP6–SP7). Notable inorganic compounds like PbS, ZnS, and FeS are found across all sizes, whereas SiO2 and CaCO3 are restricted to larger particles (SP1–SP2). Furthermore, smaller particles exhibit greater specific surface areas and pore volumes. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 190648075
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PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Characterization of solid particles with different particle sizes in high-temperature coal tar pitch.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Zhao%2C+Yiting%22">Zhao, Yiting</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Jingdong%22">Yang, Jingdong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Gang%22">Li, Gang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Long%22">Gao, Long</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Haiyong%22">Zhang, Haiyong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yonggang%22">Wang, Yonggang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wyg1960@126.com</i>
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  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Coal+Preparation+%26+Utilization%22">International Journal of Coal Preparation & Utilization</searchLink>. 2026, Vol. 46 Issue 1, p187-210. 24p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Particle+size+determination%22">Particle size determination</searchLink><br />*<searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink><br />*<searchLink fieldCode="DE" term="%22Bulk+solids%22">Bulk solids</searchLink><br />*<searchLink fieldCode="DE" term="%22Surface+area%22">Surface area</searchLink><br />*<searchLink fieldCode="DE" term="%22Carbon%22">Carbon</searchLink><br />*<searchLink fieldCode="DE" term="%22Coal+tar%22">Coal tar</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: High-temperature coal tar pitch (HCTP) serves as a crucial precursor for high-quality carbon materials, while solid particle (SP) characteristics significantly influence the properties of the pitch. This study explores the compositional differences of SPs across various sizes to facilitate their effective separation. We employed ultrasonic graded centrifugation to isolate seven SP types of different sizes and analyzed their properties using SEM, SEM-EDS plane scanning, laser particle size analysis (LPSA), organic element analysis (EA), FT-IR, ICP-MS, and XRD. Our results reveal distinct variations in the SP distribution by particle size. As the particle size decreases, the proportion of particles in the 1–100 μm range decreases, while ultrafine particles (0.01–0.1 μm) become more prevalent. The carbon content in SPs initially increases and then decreases with smaller particle sizes, reaching a peak in medium-sized particles. Non-carbon impurities such as Si, S, Zn, Pb, Ca, Fe, and inorganic ash are concentrated in larger particles (SP1–SP2) and smaller particles (SP6–SP7). Notable inorganic compounds like PbS, ZnS, and FeS are found across all sizes, whereas SiO2 and CaCO3 are restricted to larger particles (SP1–SP2). Furthermore, smaller particles exhibit greater specific surface areas and pore volumes. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/19392699.2025.2453045
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 24
        StartPage: 187
    Subjects:
      – SubjectFull: Particle size determination
        Type: general
      – SubjectFull: Scanning electron microscopy
        Type: general
      – SubjectFull: Bulk solids
        Type: general
      – SubjectFull: Surface area
        Type: general
      – SubjectFull: Carbon
        Type: general
      – SubjectFull: Coal tar
        Type: general
    Titles:
      – TitleFull: Characterization of solid particles with different particle sizes in high-temperature coal tar pitch.
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          Name:
            NameFull: Zhao, Yiting
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            NameFull: Yang, Jingdong
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            NameFull: Li, Gang
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            NameFull: Gao, Long
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            NameFull: Zhang, Haiyong
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            NameFull: Wang, Yonggang
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            – D: 01
              M: 01
              Text: 2026
              Type: published
              Y: 2026
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              Value: 19392699
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              Value: 46
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            – TitleFull: International Journal of Coal Preparation & Utilization
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