中文版 | English
Title

Enhancement of ultrafine coal slime flotation using high-shear pretreatment and polyvinylpyrrolidone

Author
Corresponding AuthorLiu, Ke
Publication Years
2022-12-01
DOI
Source Title
ISSN
1939-2699
EISSN
1939-2702
Abstract
Flotation has been used to treat coal over the last century. However, the conventional flotation condition can hardly be applied to ultrafine coal slime (UCS). An alternative combined method, which has the potential to improve UCS separation efficiency, is using high-shear pretreatment (HSP) and polymer regulator. Presented in this paper are the findings from an investigation into the flotation performance and aggregate characteristics of UCS with the assistance of HSP and polyvinylpyrrolidone (PVP). Electrokinetic, laser particle size, and rheology experiments were employed to analyze the influence of HSP and PVP on ultrafine particles. The UCS studied has a high ash content of 53.62%. The flotation results were analyzed through flotation efficiency and selectivity indexes. The results show that the flotation concentrate has less gangue entrainment and high combustible recovery, low ash content (12.74%) and higher flotation efficiency (66.26%) were obtained. Moreover, the results of flotation kinetics illustrate the advantage of using PVP, which improves the cumulative combustible recovery and flotation rate. The introduction of HSP was conducive to the improvement of separation selectivity. These findings provide fundamental insights into the effect of HSP and PVP on ultrafine particles and offer an effective technique for the enhancement of UCS flotation.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
Corresponding
WOS Research Area
Energy & Fuels ; Mining & Mineral Processing
WOS Subject
Energy & Fuels ; Mining & Mineral Processing
WOS Accession No
WOS:000905941600001
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/424890
DepartmentDepartment of Chemistry
前沿与交叉科学研究院
创新创业学院
Affiliation
1.Harbin Inst Technol, Sch Chem & Chem Engn, Harbin, Peoples R China
2.Southern Univ Sci & Technol, Dept Chem, Shenzhen, Peoples R China
3.Univ Birmingham, Birmingham Ctr Energy Storage, Birmingham, England
4.Southern Univ Sci & Technol, Shenzhen Engn Res Ctr Coal Comprehens Utilizat, Sch Innovat & Entrepreneurship, Shenzhen, Peoples R China
5.Southern Univ Sci & Technol, Clean Energy Inst, Acad Adv Interdisciplinary Studies, Shenzhen, Peoples R China
6.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
First Author AffilicationDepartment of Chemistry
Corresponding Author AffilicationDepartment of Chemistry;  School of Innovation and Entrepreneurship;  Academy for Advanced Interdisciplinary Studies
Recommended Citation
GB/T 7714
Mei, Yujie,Lin, Qiuyu,Cao, Daofan,et al. Enhancement of ultrafine coal slime flotation using high-shear pretreatment and polyvinylpyrrolidone[J]. International Journal of Coal Preparation and Utilization,2022.
APA
Mei, Yujie,Lin, Qiuyu,Cao, Daofan,Li, Junguo,&Liu, Ke.(2022).Enhancement of ultrafine coal slime flotation using high-shear pretreatment and polyvinylpyrrolidone.International Journal of Coal Preparation and Utilization.
MLA
Mei, Yujie,et al."Enhancement of ultrafine coal slime flotation using high-shear pretreatment and polyvinylpyrrolidone".International Journal of Coal Preparation and Utilization (2022).
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