首页|Utilizing N-hydroxy-9-octadecenamide as a collector in flotation separation of bastnaesite and fluorite

Utilizing N-hydroxy-9-octadecenamide as a collector in flotation separation of bastnaesite and fluorite

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Bastnaesite((Ce,La,Pr,Nd)CO3F)is a significant light rare earth mineral found in nature,known for its fine-grained properties.Flotation is commonly employed for the recovery of fine-grained bastnaesite particles.Collectors serve as an essential flotation reagent that enhance the surface hydrophobicity of target minerals.A novel collector,N-hydroxy-9-octadecenamide(N-OH-9-ODA),was synthesised in this study.N-OH-9-ODA exhibits superior selectivity compared to the traditional collector oleic acid in the flotation separation of bastnaesite and fluorite.The experimental and computational results indicate that N-OH-9-ODA exhibits superior selectivity due to its higher adsorption affinity for bastnaesite surface compared to fluorite surface.The zeta potential and the binding energies of the Ce 3d peaks in the X-ray photoelectron spectrum(XPS)of bastnaesite surface exhibit significant shifts.Conversely,fluorite surface demonstrates minimal alterations in its zeta potential and the binding energies of the Ca 2p peaks in its XPS after its interaction with N-OH-9-ODA.

BastnaesiteCollectorHydroxamic acidsN-hydroxy-9-octadecenamideOleic acidRare earths

Zhihao Guo、Sultan Ahmed Khoso、Mengjie Tian、Wei Sun

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School of Minerals Processing and Bioengineering,Central South University,Changsha,410083,China

State Key Laboratory of Mineral Processing,Beijing,102600,China

Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan,430081,China

Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources,Central South University,Changsha,410083,China

Department of Mining Engineering,Mehran University of Engineering & Technology,Jamshoro,76062,Pakistan

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaHubei Key Laboratory for Efficient Utilisation and Agglomeration of Metallurgic Mineral Resources and Open Foundation of State K

5210428791962223BGRIMM-KJSKL-2022-14

2024

10.1016/j.jre.2023.07.001

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(8)
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