一种新型表面活性剂N-羟基-9,10-环氧基十八烷基酰胺:(Ⅱ)合成及其在锂辉石/钠长石浮选分离中的应用

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中文摘要：使用油酸作为反应底物,其羧基转化为N-羟基酰胺基,并在其结构中引入环氧基,合成一种新型羟肟酸类捕收剂N-羟基-9,10-环氧基十八烷基酰胺(N-OH-9,10-O-ODA),并将其作为一种新型捕收剂应用于锂辉石与其伴生脉石矿物钠长石的浮选分离.N-OH-9,10-O-ODA表现出优异的选择性,其对锂辉石颗粒的捕收能力强于钠长石颗粒.动电位测量和X射线光电子能谱分析结果表明,N-OH-9,10-O-ODA在锂辉石表面的吸附量与其在钠长石表面的吸附量接近.第一性原理计算发现N-OH-9,10-O-ODA在锂辉石和钠长石表面存在不同的吸附构型,这导致N-OH-9,10-O-ODA对锂辉石和钠长石颗粒的浮选捕收剂能力不同.

外文标题：A novel surfactant N-hydroxy-9,10-epoxy group-octadecanamide:Part Ⅱ.Its synthesis and application in flotation separation of spodumene and albite

外文摘要：A novel hydroxamic acid,N-hydroxy-9,1 0-epoxy group-octadecanamide(N-OH-9,10-O-ODA),was synthesised by modifying the structure of oleic acid.The carboxyl group of oleic acid was converted into an N-hydroxy amide group,and an epoxy group was introduced into its structure.N-OH-9,10-O-ODA was used as a novel collector in the flotation separation of spodumene from one of its associated gangue minerals,specifically albite.N-OH-9,10-O-ODA exhibits remarkable selectivity,with a stronger affinity for collecting spodumene particles compared to albite particles.Zeta potential measurements and X-ray photoelectron spectroscopic analysis reveal that the adsorption quantity of N-OH-9,10-O-ODA on spodumene surface is comparable to that on albite surface.First-principles calculations demonstrate the diverse adsorption configurations of N-OH-9,10-O-ODA on surfaces of spodumene and albite,leading to its distinct collecting abilities for spodumene and albite particles.

外文关键词：

N-hydroxy-9,10-epoxy group-octadecanamidespodumenealbiteflotation separationoleic acid

作者：

张伟迪、田孟杰、孙伟

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作者单位：

中南大学资源加工与生物学院,长沙 410083

矿物加工科学与技术国家重点实验,北京 102600

冶金矿产资源高效利用与造块湖北省重点实验室,武汉 430081

中南大学战略含钙矿物资源清洁高效利用湖南省重点实验室,长沙 410083

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关键词：

N-羟基-9,10-环氧基十八烷基酰胺锂辉石钠长石浮选分离油酸

基金：

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

项目编号：

9196222352104287U2067201BGRIMM-KJSKL-2022-14

出版年：

2024

DOI：

10.1016/S1003-6326(24)66591-X

中国有色金属学报(英文版)

中国有色金属学会

中国有色金属学报(英文版)

CSTPCD

影响因子：1.183

ISSN：1003-6326

年,卷(期)：2024.34(9)

参考文献量7