Understanding the Role of Polyvinylpyrrolidone on Ultrafine Low-Rank Coal Flotation

Lin，Qiuyu1,2; Mei，Yujie1,2; Huang，Wei3,4; Zhang，Bo5; Liu，Ke2,3,4

2021

10.1021/acsomega.1c06701

ACS Omega   影响因子和分区

2470-1343

2470-1343

Effective regulation reagents are essential in low-rank coal flotation for improving the floatability of ultrafine particles. Polymer regulators have great potential in the surface modification of ultrafine coal particles. A novel nonionic polymer, polyvinylpyrrolidone (PVP), is evaluated in this study to determine its effectiveness as a regulator in floating ultrafine low-rank coal. Laser particle size analysis is used to discern both the size distribution of coal particles and the change in size distribution. Contact angle tests are carried out to evaluate the wettability of low-rank coal. Surface functional groups of low-rank coal are analyzed by Fourier transform infrared spectroscopy, and the surface interaction energy is tested by X-ray photoelectron spectroscopy. The results show effective adsorption of PVP and demonstrate the effects of PVP at the coal surface. The adsorption of PVP changes the proportion of exposed carbon and oxygen-containing functional groups on the surface of low-rank coal, regulating the size distribution of low-rank coal particles in suspension. The success of polyvinylpyrrolidone as a regulator in low-rank coal flotation is demonstrated, and the mechanisms by which PVP can affect ultrafine low-rank coal flotation are elucidated.

SCI

英语

通讯

Shenzhen Development and Reform Commission[XMHT20190203001] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N532] ; Shenzhen Government Related Supporting Fund[KYTDPT20181011104002] ; Research Fund for the Postdoctoral Program[2021T140709]

Chemistry

Chemistry, Multidisciplinary

WOS:000783983200023

AMER CHEMICAL SOC

2-s2.0-85127860775

Scopus

1.School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin,150001,China
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
3.Shenzhen Engineering Research Center for Coal Comprehensive Utilization,School of Innovation and Entrepreneurship,Southern University of Science and Technology,Shenzhen,518055,China
4.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
5.Key Laboratory of Coal Processing and Efficient Utilization,Ministry of Education,China University of Mining and Technology,Xuzhou,Jiangsu,221116,China

Lin，Qiuyu,Mei，Yujie,Huang，Wei,et al. Understanding the Role of Polyvinylpyrrolidone on Ultrafine Low-Rank Coal Flotation[J]. ACS Omega,2021,7(12).

Lin，Qiuyu,Mei，Yujie,Huang，Wei,Zhang，Bo,&Liu，Ke.(2021).Understanding the Role of Polyvinylpyrrolidone on Ultrafine Low-Rank Coal Flotation.ACS Omega,7(12).

Lin，Qiuyu,et al."Understanding the Role of Polyvinylpyrrolidone on Ultrafine Low-Rank Coal Flotation".ACS Omega 7.12(2021).