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

作　　者：Zhihao Guo Sultan Ahmed Khoso Mengjie Tian Wei Sun 

机构地区：[1]School of Minerals Processing and Bioengineering,Central South University,Changsha,410083,China [2]State Key Laboratory of Mineral Processing,Beijing,102600,China [3]Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan,430081,China [4]Key Laboratoryof Hunan Province for Cleanand Efficient Utilization of Strategic Calcium-containing Mineral Resources,Central South University,Changsha,410083,China [5]Department of Mining Engineering,Mehran University of Engineering&Technology,Jamshoro,76062,Pakistan

出　　处：《Journal of Rare Earths》2024年第8期1620-1628,I0008,共10页稀土学报（英文版）

基　　金：supported by National Natural Science Foundation of China (52104287,91962223);Hubei Key Laboratory for Efficient Utilisation and Agglomeration of Metallurgic Mineral Resources;Open Foundation of State Key Laboratory of Mineral Processing (BGRIMM-KJSKL-2022-14)。

摘　　要：Bastnaesite((Ce,La,Pr,Nd)CO_(3)F) 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 co mputational 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.

关 键 词：BASTNAESITE COLLECTOR Hydroxamic acids N-hydroxy-9-octadecenamide Oleic acid Rare earths 

分 类 号：TD923.13[矿业工程—选矿]