Flotation behavior and adsorption mechanism of 2-hydroxy-3-naphthyl hydroxamic acid on bastnaesite surface

IF 7.2 1区化学 Q1 CHEMISTRY, APPLIED

Journal of Rare Earths Pub Date : 2024-04-15 DOI:10.1016/j.jre.2024.04.007

Zhenyue Zhang , Ling Jiang , Wenda Guo , Jing Yang , Defeng Liu , Ru'an Chi

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Abstract

In order to reveal the effect of 2-hydroxy-3-naphthyl hydroxamic acid (H205) on the flotation behavior and action mechanism of bastnaesite, single-mineral flotation experiments of bastnaesite were conducted. The flotation recovery of bastnaesites can be achieved more than 90% when the aeration rate is 40 mL/min, the rotational speed is 200 r/min, the H205 dosage is 120 mg/L, and the pulp pH ranges from 7 to 9. The action mechanism of H205 on the surface of bastnaesite was studied by simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), Zeta potential measurements, Fourier transform-infrared spectra (FT-IR) and X-ray photoelectron spectroscopy (XPS). These analysis results show that under suitable flotation conditions, H205 has an obvious adsorption phenomenon on the surface of bastnaesite. The adsorption involves electrostatic interactions and chemical interactions, namely H205 has a strong collecting ability of bastnaesite due to the synergism of electrostatic adsorption and chemical adsorption. This study systematically reveals the flotation behavior and adsorption mechanism of H205 on the surface of bastnaesite, and provides useful theoretical guidance for efficient flotation separation of bastnaesite.

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2-hydroxy-3-naphthyl hydroxamic acid 在韧皮石表面的浮选行为和吸附机理

为了揭示2-羟基-3-萘羟肟酸（H205）对氟碳铈矿浮选行为的影响及其作用机理，对氟碳铈矿进行了单矿物浮选实验。当曝气率为40 mL/min，转速为200 r/min， H205用量为120 mg/L，矿浆pH为7 ~ 9时，氟碳铈矿的浮选回收率可达90%以上。采用热重差示扫描量热法（TG-DSC）、Zeta电位、傅里叶变换红外光谱（FT-IR）和x射线光电子能谱（XPS）等方法研究了H205对氟碳铈矿表面的作用机理。这些分析结果表明，在合适的浮选条件下，H205在氟碳铈矿表面有明显的吸附现象。吸附过程涉及静电相互作用和化学相互作用，即H205由于静电吸附和化学吸附的协同作用而具有较强的氟碳铈矿收集能力。本研究系统地揭示了H205在氟碳石表面的浮选行为和吸附机理，为氟碳石的高效浮选分离提供了有益的理论指导。

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来源期刊

Journal of Rare Earths 化学-应用化学

CiteScore

8.70

自引率

14.30%

发文量

374

审稿时长

1.7 months

期刊介绍： The Journal of Rare Earths reports studies on the 17 rare earth elements. It is a unique English-language learned journal that publishes works on various aspects of basic theory and applied science in the field of rare earths (RE). The journal accepts original high-quality original research papers and review articles with inventive content, and complete experimental data. It represents high academic standards and new progress in the RE field. Due to the advantage of abundant RE resources of China, the research on RE develops very actively, and papers on the latest progress in this field emerge every year. It is not only an important resource in which technicians publish and obtain their latest research results on RE, but also an important way of reflecting the updated progress in RE research field. The Journal of Rare Earths covers all research and application of RE rare earths including spectroscopy, luminescence and phosphors, rare earth catalysis, magnetism and magnetic materials, advanced rare earth materials, RE chemistry & hydrometallurgy, RE metallography & pyrometallurgy, RE new materials, RE solid state physics & solid state chemistry, rare earth applications, RE analysis & test, RE geology & ore dressing, etc.