Synergistic enhancement mechanism of a novel mixed anionic/cationic collector in the flotation separation of fine-grained lepidolite

IF 5.2 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Liquids Pub Date : 2025-10-03 DOI:10.1016/j.molliq.2025.128644

Zhizhao Yang , Xianping Luo , Hepeng Zhou , Genwang Sun , Louyan Shen , Yongbing Zhang , Xuekun Tang , Zishuai Liu

{"title":"Synergistic enhancement mechanism of a novel mixed anionic/cationic collector in the flotation separation of fine-grained lepidolite","authors":"Zhizhao Yang , Xianping Luo , Hepeng Zhou , Genwang Sun , Louyan Shen , Yongbing Zhang , Xuekun Tang , Zishuai Liu","doi":"10.1016/j.molliq.2025.128644","DOIUrl":null,"url":null,"abstract":"<div><div>The novel mixed anionic/cationic collector of potassium lauryl sulfate (PLS) and dodecylamine (DDA) exhibited excellent selectivity in the flotation separation of fine-grained lepidolite. Micro-flotation results indicated that the flotation separation of fine-grained lepidolite was effectively achieved under neutral conditions, yielding a concentrate with a Li₂O grade of 4.55 % and a Li₂O recovery of 83.23 %. Particle size and mineral morphology analyses confirmed that the mixed collector PLS/DDA exhibited higher selectivity in enhancing the particle size of fine-grained lepidolite compared to that of feldspar and quartz. Zeta potential and Fourier transform infrared analyses indicated that PLS and DDA can co-adsorb on the surface of fine-grained lepidolite, demonstrating an excellent synergistic effect in selective adsorption. Scanning electron microscopy and energy-dispersive spectroscopy analyses verified that the mixed collector PLS/DDA effectively promoted the agglomeration of fine-grained lepidolite particles. X-ray photoelectron spectroscopy analysis proved that DDA exhibited significant adsorption capacity on the fine-grained lepidolite surface after PLS pretreatment. The selective synergistic effect of the mixed collector PLS/DDA was critical in enabling efficient flotation separation of fine-grained lepidolite. This study provided both theoretical insights and a practical method for improving the separation effect of fine-grained lepidolite.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"437 ","pages":"Article 128644"},"PeriodicalIF":5.2000,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Molecular Liquids","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167732225018215","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The novel mixed anionic/cationic collector of potassium lauryl sulfate (PLS) and dodecylamine (DDA) exhibited excellent selectivity in the flotation separation of fine-grained lepidolite. Micro-flotation results indicated that the flotation separation of fine-grained lepidolite was effectively achieved under neutral conditions, yielding a concentrate with a Li₂O grade of 4.55 % and a Li₂O recovery of 83.23 %. Particle size and mineral morphology analyses confirmed that the mixed collector PLS/DDA exhibited higher selectivity in enhancing the particle size of fine-grained lepidolite compared to that of feldspar and quartz. Zeta potential and Fourier transform infrared analyses indicated that PLS and DDA can co-adsorb on the surface of fine-grained lepidolite, demonstrating an excellent synergistic effect in selective adsorption. Scanning electron microscopy and energy-dispersive spectroscopy analyses verified that the mixed collector PLS/DDA effectively promoted the agglomeration of fine-grained lepidolite particles. X-ray photoelectron spectroscopy analysis proved that DDA exhibited significant adsorption capacity on the fine-grained lepidolite surface after PLS pretreatment. The selective synergistic effect of the mixed collector PLS/DDA was critical in enabling efficient flotation separation of fine-grained lepidolite. This study provided both theoretical insights and a practical method for improving the separation effect of fine-grained lepidolite.

查看原文本刊更多论文

一种新型阴离子/阳离子混合捕收剂在细粒锂云石浮选分离中的协同强化机理

新型阴离子/阳离子混合捕收剂十二烷基硫酸钾（PLS）和十二烷基胺（DDA）在细粒锂云石浮选分离中表现出良好的选择性。微浮选结果表明，在中性条件下可有效实现细粒锂云石的浮选分离，精矿中Li₂O品位为4.55%，Li₂O回收率为83.23%。粒度和矿物形态分析证实，与长石和石英相比，混合捕收剂PLS/DDA对细粒锂云石的粒度具有更高的选择性。Zeta电位和傅里叶红外分析表明，PLS和DDA可以在细粒锂云石表面共同吸附，表现出良好的选择性吸附协同效应。扫描电镜和能谱分析证实，混合捕收剂PLS/DDA有效促进了细粒锂云石颗粒的团聚。x射线光电子能谱分析证明，经PLS预处理后，DDA在细粒锂云石表面表现出显著的吸附能力。混合捕收剂PLS/DDA的选择性协同作用是实现细粒锂云母高效浮选分离的关键。本研究为提高细粒锂云石的分离效果提供了理论见解和实践方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Molecular Liquids 化学-物理：原子、分子和化学物理

CiteScore

10.30

自引率

16.70%

发文量

2597

审稿时长

78 days

期刊介绍： The journal includes papers in the following areas: – Simple organic liquids and mixtures – Ionic liquids – Surfactant solutions (including micelles and vesicles) and liquid interfaces – Colloidal solutions and nanoparticles – Thermotropic and lyotropic liquid crystals – Ferrofluids – Water, aqueous solutions and other hydrogen-bonded liquids – Lubricants, polymer solutions and melts – Molten metals and salts – Phase transitions and critical phenomena in liquids and confined fluids – Self assembly in complex liquids.– Biomolecules in solution The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include: – Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.) – Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.) – Light scattering (Rayleigh, Brillouin, PCS, etc.) – Dielectric relaxation – X-ray and neutron scattering and diffraction. Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.