首页|Novel polyhydroxy cationic collector N-(2,3-propanediol)-N-dodecylamine:Synthesis and flotation performance to hematite and quartz

Novel polyhydroxy cationic collector N-(2,3-propanediol)-N-dodecylamine:Synthesis and flotation performance to hematite and quartz

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To enhance the performance of traditional cationic collector,a novel poly hydroxy amine collector N-(2,3-Propanediol)-N-dodecylamine(PDDA)was designed by introducing one propylene glycol group into dodecylamine(DDA).It was prepared by a nucleophilic substitution reaction,which showed better sol-ubility and hydrophobicity than DDA and was firstly employed as the collector for the separation of hematite and quartz.Flotation tests showed that PDDA had an excellent flotation performance and sig-nificantly better selectivity than DDA.In addition,the flotation performance and adsorption mechanism of PDDA on hematite and quartz surfaces were studied using Fourier transform infrared spectroscopy(FT-IR),zeta potential and X-ray photoelectron spectroscopy(XPS)tests.These results demonstrated that the interaction between PDDA and the minerals'surfaces was mainly electrostatic adsorption and hydrogen bond,while PDDA tended to adsorb on the surfaces of quartz more than that of hematite.Performance optimization of amine collectors by introducing hydroxyl was also verified,which was of great meaning to the design,development,and application of the polyhydroxy cationic collector.In conclusion,PDDA could be used as a potential collector in the flotation separation of quartz and hematite.

Polyhydroxy collectorQuartzHematiteInteraction mechanismHydrogen bonding

Wenbao Liu、Xiangyu Peng、Wengang Liu、Kelin Tong、Yanbai Shen、Qiang Zhao、Sikai Zhao、Wenhan Sun

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School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China

Science and Technology Innovation Center of Smart Water and Resource Environment,Northeastern University,Shenyang 110819,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaLiaoning Revitalization Talents ProgramFundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities

521042505187407451874073XLYC1807089N2101029N2101047

2023

矿业科学技术学报(英文版)
中国矿业大学

矿业科学技术学报(英文版)

CSTPCDCSCD北大核心EI
影响因子：1.222
ISSN：2095-2686
年,卷(期)：2023.33(1)
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