Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of Polyvinylpyrrolidone
The efficient separation of ultrafine coal is a challenging process due to the ultrafine particle size and gangue entrainment. In this study, a polymer, polyvinylpyrrolidone (PVP), was introduced as a regulator for ultrafine coal beneficiation. The addition of PVP improved the combustible recovery o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/6/725 |
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| author | Yujie Mei Qiuyu Lin Changning Wu Wei Huang Daofan Cao Ke Liu |
| author_facet | Yujie Mei Qiuyu Lin Changning Wu Wei Huang Daofan Cao Ke Liu |
| author_sort | Yujie Mei |
| collection | DOAJ |
| description | The efficient separation of ultrafine coal is a challenging process due to the ultrafine particle size and gangue entrainment. In this study, a polymer, polyvinylpyrrolidone (PVP), was introduced as a regulator for ultrafine coal beneficiation. The addition of PVP improved the combustible recovery of clean coal and decreased the ash content. This effect was also presented by the selectivity index. The regulation mechanism of PVP was investigated using diverse methods. The adsorption tests performed demonstrated the adsorption amount of PVP on coal, kaolinite, and quartz, which were related to the increase in the separation efficiency. A zeta potential analyzer was employed to elucidate the effect of PVP on the electrical properties of ultrafine particles. The results revealed that the electrokinetic potential of mineral was sensitive to the varying PVP concentration. The particle size distribution was observed to value the influence of PVP on the particle behavior, which was tested by a laser particle size analyzer. X-ray photoelectron spectroscopy was used to investigate the surface elemental compositions of coal, kaolinite, and quartz, which were regulated by the adsorption of PVP. This research is beneficial to understanding the role of PVP as regulators and provides a basis for the efficient separation of ultrafine coal. |
| first_indexed | 2024-03-09T22:57:58Z |
| format | Article |
| id | doaj.art-427f2bf8cebf4032b5a2f06dd12bc1c9 |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T22:57:58Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-427f2bf8cebf4032b5a2f06dd12bc1c92023-11-23T18:06:49ZengMDPI AGMinerals2075-163X2022-06-0112672510.3390/min12060725Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of PolyvinylpyrrolidoneYujie Mei0Qiuyu Lin1Changning Wu2Wei Huang3Daofan Cao4Ke Liu5School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, ChinaSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, ChinaDepartment of Chemistry, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Chemistry, Southern University of Science and Technology, Shenzhen 518055, ChinaBirmingham Centre for Energy Storage (BCES), University of Birmingham, Birmingham B15 2TT, UKDepartment of Chemistry, Southern University of Science and Technology, Shenzhen 518055, ChinaThe efficient separation of ultrafine coal is a challenging process due to the ultrafine particle size and gangue entrainment. In this study, a polymer, polyvinylpyrrolidone (PVP), was introduced as a regulator for ultrafine coal beneficiation. The addition of PVP improved the combustible recovery of clean coal and decreased the ash content. This effect was also presented by the selectivity index. The regulation mechanism of PVP was investigated using diverse methods. The adsorption tests performed demonstrated the adsorption amount of PVP on coal, kaolinite, and quartz, which were related to the increase in the separation efficiency. A zeta potential analyzer was employed to elucidate the effect of PVP on the electrical properties of ultrafine particles. The results revealed that the electrokinetic potential of mineral was sensitive to the varying PVP concentration. The particle size distribution was observed to value the influence of PVP on the particle behavior, which was tested by a laser particle size analyzer. X-ray photoelectron spectroscopy was used to investigate the surface elemental compositions of coal, kaolinite, and quartz, which were regulated by the adsorption of PVP. This research is beneficial to understanding the role of PVP as regulators and provides a basis for the efficient separation of ultrafine coal.https://www.mdpi.com/2075-163X/12/6/725polyvinylpyrrolidoneultrafine coaladsorptionseparation efficiency |
| spellingShingle | Yujie Mei Qiuyu Lin Changning Wu Wei Huang Daofan Cao Ke Liu Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of Polyvinylpyrrolidone Minerals polyvinylpyrrolidone ultrafine coal adsorption separation efficiency |
| title | Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of Polyvinylpyrrolidone |
| title_full | Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of Polyvinylpyrrolidone |
| title_fullStr | Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of Polyvinylpyrrolidone |
| title_full_unstemmed | Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of Polyvinylpyrrolidone |
| title_short | Efficient Separation of Ultrafine Coal Assisted by Selective Adsorption of Polyvinylpyrrolidone |
| title_sort | efficient separation of ultrafine coal assisted by selective adsorption of polyvinylpyrrolidone |
| topic | polyvinylpyrrolidone ultrafine coal adsorption separation efficiency |
| url | https://www.mdpi.com/2075-163X/12/6/725 |
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