Preparation of a novel silica-polyvinylpyrrolidone hybrid regulator and its role in ultrafine low-rank coal flotation

Lin, Qiuyu1,2; Mei, Yujie1,2; Wu, Changning3,4; Cao, Daofan5,6; Liu, Ke2,3,7

2023-02-01

10.1080/19392699.2023.2179043

International Journal of Coal Preparation and Utilization   Impact Factor & Quartile

1939-2699

1939-2702

In upgrading low-rank coal, various promoters have been employed with their fascinating abilities to alter the surface properties of particles. For decades, regulators have been proven as effective promotors in flotation. In recent years, coal flotation has benefited from the development of hybrid regulators. The interaction between coal and gangue particles can be regulated through the adjustable properties of hybrid regulators. However, when it comes to ultrafine low-rank coal (ULC), flotation becomes more difficult. The performance of micromolecule surfactants and oily collectors is not obvious when the grain size becomes finer and the coal rank becomes lower. The polymers and nanoparticles are valued for their performance. The emphasis of this study is on the preparation of silica-polyvinylpyrrolidone hybrid regulator (SiO2-PVP) and its role in low-rank coal flotation. The effect of the hybrid regulators on ULC is revealed by surface properties and chemical interactions. The contact angle, floc size, functional group, and surface topography of ULC were regulated by SiO2-PVP. The flotation response proved the benefits of SiO2-PVP to combustible recovery and clean coal. Thus, SiO2-PVP is a reliable hybrid promoter for ULC flotation. This study will be helpful to understand the effect of the polymer-nanoparticle regulator on low-rank coal flotation.

Low-rank coal flotation polymer hybrid regulator

SCI

English

Corresponding

~RevTech-SUSTech Joint RMS Technology Development Project[OR2109006] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06N532]

Energy & Fuels ; Mining & Mineral Processing

Energy & Fuels ; Mining & Mineral Processing

WOS:000934243200001

TAYLOR & FRANCIS INC

Web of Science

1.Harbin Inst Technol, Sch Chem & Chem Engn, Harbin, Peoples R China
2.Southern Univ Sci & Technol, Dept Chem, Shenzhen, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Engn Res Ctr Coal Comprehens Utilizat SCC, Sch Innovat & Entrepreneurship, Shenzhen, Peoples R China
4.Southern Univ Sci & Technol, Clean Energy Inst, Acad Adv Interdisciplinary Studies, Shenzhen, Peoples R China
5.Univ Birmingham, Birmingham Ctr Energy Storage BCES, Birmingham, England
6.Univ Birmingham, Sch Chem Engn, Birmingham, England
7.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China

Lin, Qiuyu,Mei, Yujie,Wu, Changning,et al. Preparation of a novel silica-polyvinylpyrrolidone hybrid regulator and its role in ultrafine low-rank coal flotation[J]. International Journal of Coal Preparation and Utilization,2023.

Lin, Qiuyu,Mei, Yujie,Wu, Changning,Cao, Daofan,&Liu, Ke.(2023).Preparation of a novel silica-polyvinylpyrrolidone hybrid regulator and its role in ultrafine low-rank coal flotation.International Journal of Coal Preparation and Utilization.

Lin, Qiuyu,et al."Preparation of a novel silica-polyvinylpyrrolidone hybrid regulator and its role in ultrafine low-rank coal flotation".International Journal of Coal Preparation and Utilization (2023).