Selective flotation separation of bastnaesite from dolomite using β-naphthyl sulfonate formaldehyde condensate as depressant: Experimental and calculational studies

Liu, S; Mao, Y; Luo, Y; Weng, X; Chen, Q; Li, H; Yi, H; Song, S; He, D

Selective flotation separation of bastnaesite from dolomite using β-naphthyl sulfonate formaldehyde condensate as depressant: Experimental and calculational studies

Liu, S Mao, Y Luo, Y Weng, X Chen, Q Li, H Yi, H Song, S He, D

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Publisher:: Elsevier
Publication Type:: Journal Article
Citation:: Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2022, 639, pp. 128380
Issue Date:: 2022-04-20

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Field	Value	Language
dc.contributor.author	Liu, S
dc.contributor.author	Mao, Y
dc.contributor.author	Luo, Y
dc.contributor.author	Weng, X
dc.contributor.author	Chen, Q
dc.contributor.author	Li, H
dc.contributor.author	Yi, H
dc.contributor.author	Song, S
dc.contributor.author	He, D
dc.date.accessioned	2023-07-09T03:28:07Z
dc.date.available	2023-07-09T03:28:07Z
dc.date.issued	2022-04-20
dc.identifier.citation	Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2022, 639, pp. 128380
dc.identifier.issn	0927-7757
dc.identifier.issn	1873-4359
dc.identifier.uri	http://hdl.handle.net/10453/171363
dc.description.abstract	It is difficult to recover bastnaesite from dolomite when using octyl hydroxamic acid (OHA) as collector owing to the similar chemical properties between bastnaesite and dolomite. In this work, β-naphthyl sulfonate formaldehyde condensate (NSFC), as an effective depressant for dolomite has been employed. The flotation performance of NSFC in bastnaesite-dolomite system has been investigated with the help of single minerals flotation and artificially mixed minerals flotation. The depression mechanism has been first proposed from micro level by means of XPS analyses and molecular dynamic simulations. The flotation results demonstrate that NSFC showed a higher affinity towards dolomite instead of bastnaesite, and rare earth element can be effectively recovered using NSFC as depressant in bastnaesite-dolomite system. Mg active sites existing on dolomite surface are more prone to reacting with NSFC depressant through chemical bonding. The distance between Mg active sites on dolomite surface and oxygen components in sulfo groups became closer after interaction, which is opposite to that of Ca active sites, indicating that Mg active sites are the predominant place for NSFC attachment. The findings reveal that NSFC in conjunction with OHA could be used as an effective flotation reagent scheme for satisfactory recovery of bastnaesite when dolomite is the main associated gangue mineral.
dc.language	en
dc.publisher	Elsevier
dc.relation.ispartof	Colloids and Surfaces A: Physicochemical and Engineering Aspects
dc.relation.isbasedon	10.1016/j.colsurfa.2022.128380
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 03 Chemical Sciences, 09 Engineering
dc.subject.classification	Chemical Physics
dc.subject.classification	34 Chemical sciences
dc.subject.classification	40 Engineering
dc.subject.classification	51 Physical sciences
dc.title	Selective flotation separation of bastnaesite from dolomite using β-naphthyl sulfonate formaldehyde condensate as depressant: Experimental and calculational studies
dc.type	Journal Article
utslib.citation.volume	639
utslib.for	02 Physical Sciences
utslib.for	03 Chemical Sciences
utslib.for	09 Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-07-09T03:28:04Z
pubs.publication-status	Published
pubs.volume	639

Abstract:

It is difficult to recover bastnaesite from dolomite when using octyl hydroxamic acid (OHA) as collector owing to the similar chemical properties between bastnaesite and dolomite. In this work, β-naphthyl sulfonate formaldehyde condensate (NSFC), as an effective depressant for dolomite has been employed. The flotation performance of NSFC in bastnaesite-dolomite system has been investigated with the help of single minerals flotation and artificially mixed minerals flotation. The depression mechanism has been first proposed from micro level by means of XPS analyses and molecular dynamic simulations. The flotation results demonstrate that NSFC showed a higher affinity towards dolomite instead of bastnaesite, and rare earth element can be effectively recovered using NSFC as depressant in bastnaesite-dolomite system. Mg active sites existing on dolomite surface are more prone to reacting with NSFC depressant through chemical bonding. The distance between Mg active sites on dolomite surface and oxygen components in sulfo groups became closer after interaction, which is opposite to that of Ca active sites, indicating that Mg active sites are the predominant place for NSFC attachment. The findings reveal that NSFC in conjunction with OHA could be used as an effective flotation reagent scheme for satisfactory recovery of bastnaesite when dolomite is the main associated gangue mineral.

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http://hdl.handle.net/10453/171363