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Emulsion collector formed by phase inversion composition (PIC) process for low-rank coal flotation: bubble-particle and emulsion-particle interaction mechanisms.

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Title: Emulsion collector formed by phase inversion composition (PIC) process for low-rank coal flotation: bubble-particle and emulsion-particle interaction mechanisms.
Authors: Kong, Yibo1,2 (AUTHOR), Li, Zhe1,3 (AUTHOR) lizhecup@126.com, Lu, Hang1,2 (AUTHOR), Ma, Zhenchao1,2 (AUTHOR), Liu, Jincheng1,2 (AUTHOR), Yang, Xuesong1 (AUTHOR), Zhou, Bobo1 (AUTHOR), Xing, Yaowen1 (AUTHOR), Gui, Xiahui1 (AUTHOR) guixiahui1985@163.com
Source: International Journal of Coal Preparation & Utilization. 2026, Vol. 46 Issue 6, p1820-1843. 24p.
Subject Terms: *Flotation reagents, *Emulsions, *Hydrophobic interactions, *Flotation
Abstract: Emulsion collectors are highly effective for low-rank coal (LRC) flotation, improving dispersion and interaction between oily collectors and coal particles. However, their application often involves high equipment costs and energy consumption. This study employed the phase inversion composition (PIC) low-energy emulsification method to prepare the oil-in-water (O/W) emulsion collectors. The freshly prepared O/W emulsion collectors had strong stability, uniform droplet size (average droplet diameter, D50 = 0.5 μm), and low shear viscosity (<10 mPa‧s). Additionally, flotation tests revealed that the optimum emulsion collector (with 10% emulsifier) could achieve significantly higher flotation recovery rate 84.48% than individual diesel (17.17%), and the clean coal ash content could be decreased from 4.89% (diesel) to 3.79%. This was attributed the enhanced hydrophobicity (61° to 94° of CA) of LRC surface, increased bubble-particle wrap angle (130° to 277°) and detachment forces values (65.4 μN to 132.7 μN) after emulsion collector treatment. Furthermore, the wetting heat and adhesion forces of emulsion-particle were significantly higher than those of diesel-particle, indicating the strong adhesion interaction energy. This study introduces a low-energy emulsification method for preparation of efficient emulsion collector, providing potentials for wider industrial applications of improved LRC flotation. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194221864
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Emulsion collector formed by phase inversion composition (PIC) process for low-rank coal flotation: bubble-particle and emulsion-particle interaction mechanisms.
– Name: Author
  Label: Authors
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Kong%2C+Yibo%22&quot;&gt;Kong, Yibo&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Li%2C+Zhe%22&quot;&gt;Li, Zhe&lt;/searchLink&gt;&lt;relatesTo&gt;1,3&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; lizhecup@126.com&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Lu%2C+Hang%22&quot;&gt;Lu, Hang&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Ma%2C+Zhenchao%22&quot;&gt;Ma, Zhenchao&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Liu%2C+Jincheng%22&quot;&gt;Liu, Jincheng&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Yang%2C+Xuesong%22&quot;&gt;Yang, Xuesong&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Zhou%2C+Bobo%22&quot;&gt;Zhou, Bobo&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Xing%2C+Yaowen%22&quot;&gt;Xing, Yaowen&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Gui%2C+Xiahui%22&quot;&gt;Gui, Xiahui&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; guixiahui1985@163.com&lt;/i&gt;
– Name: TitleSource
  Label: Source
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22International+Journal+of+Coal+Preparation+%26+Utilization%22&quot;&gt;International Journal of Coal Preparation &amp; Utilization&lt;/searchLink&gt;. 2026, Vol. 46 Issue 6, p1820-1843. 24p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Flotation+reagents%22&quot;&gt;Flotation reagents&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Emulsions%22&quot;&gt;Emulsions&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Hydrophobic+interactions%22&quot;&gt;Hydrophobic interactions&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Flotation%22&quot;&gt;Flotation&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Emulsion collectors are highly effective for low-rank coal (LRC) flotation, improving dispersion and interaction between oily collectors and coal particles. However, their application often involves high equipment costs and energy consumption. This study employed the phase inversion composition (PIC) low-energy emulsification method to prepare the oil-in-water (O/W) emulsion collectors. The freshly prepared O/W emulsion collectors had strong stability, uniform droplet size (average droplet diameter, D50 = 0.5 μm), and low shear viscosity (&lt;10 mPa‧s). Additionally, flotation tests revealed that the optimum emulsion collector (with 10% emulsifier) could achieve significantly higher flotation recovery rate 84.48% than individual diesel (17.17%), and the clean coal ash content could be decreased from 4.89% (diesel) to 3.79%. This was attributed the enhanced hydrophobicity (61&#176; to 94&#176; of CA) of LRC surface, increased bubble-particle wrap angle (130&#176; to 277&#176;) and detachment forces values (65.4 μN to 132.7 μN) after emulsion collector treatment. Furthermore, the wetting heat and adhesion forces of emulsion-particle were significantly higher than those of diesel-particle, indicating the strong adhesion interaction energy. This study introduces a low-energy emulsification method for preparation of efficient emulsion collector, providing potentials for wider industrial applications of improved LRC flotation. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=194221864
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/19392699.2025.2512106
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 24
        StartPage: 1820
    Subjects:
      – SubjectFull: Flotation reagents
        Type: general
      – SubjectFull: Emulsions
        Type: general
      – SubjectFull: Hydrophobic interactions
        Type: general
      – SubjectFull: Flotation
        Type: general
    Titles:
      – TitleFull: Emulsion collector formed by phase inversion composition (PIC) process for low-rank coal flotation: bubble-particle and emulsion-particle interaction mechanisms.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Kong, Yibo
      – PersonEntity:
          Name:
            NameFull: Li, Zhe
      – PersonEntity:
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            NameFull: Lu, Hang
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            NameFull: Ma, Zhenchao
      – PersonEntity:
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            NameFull: Liu, Jincheng
      – PersonEntity:
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            NameFull: Yang, Xuesong
      – PersonEntity:
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            NameFull: Zhou, Bobo
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            NameFull: Xing, Yaowen
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            NameFull: Gui, Xiahui
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          Dates:
            – D: 01
              M: 06
              Text: 2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 19392699
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            – Type: volume
              Value: 46
            – Type: issue
              Value: 6
          Titles:
            – TitleFull: International Journal of Coal Preparation & Utilization
              Type: main
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