Study of soybean oil-based hydroxamic acid as an efficient flotation collector for ilmenite flotation separation

IF 6.9 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2025-07-22 DOI:10.1016/j.apsusc.2025.164078

Jinxia Zhang, Hongtao Li, Fusheng Niu, Chao Yang, Zehong Cheng, Yuying Chen

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Abstract

In this study, a novel green ilmenite collector, soybean oil-based hydroxamic acid (SOHA), was synthesized, and its selective flotation performance between ilmenite and chlorite was systematically evaluated. Micro-flotation test using artificially mixed ores showed that under neutral conditions with a SOHA dosage of 300 mg/L, the TiO₂ grade reached 39.51 %, and the recovery rate achieved 94.57 %. Adsorption measurements indicated that the adsorption capacity of SOHA-treated ilmenite was significantly higher than chlorite. Contact angle and Zeta potential tests revealed that SOHA selectively adsorbed onto the surface of ilmenite, creating a hydrophobic environment. The adsorption of SOHA-treated ilmenite was significantly higher than chlorite, with the isoelectric point shifting from 4.9 to 3.9, facilitating interaction between ilmenite and the collector. FT-IR analysis showed that SOHA formed chemical adsorption on the surface of ilmenite, while physical adsorption dominated on chlorite. XPS further confirmed that SOHA adsorbed onto the surface of ilmenite through chemical interactions and weakly adsorbed on chlorite via electrostatic interactions with the Si-O structure. This study demonstrates that soybean oil-based hydroxamic acid (SOHA), synthesized through molecular design, exhibits excellent collecting power and selectivity in the ilmenite-chlorite flotation system, providing theoretical support and technical guidance for developing green flotation reagents for ilmenite.

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大豆油基羟肟酸作为钛铁矿浮选分离高效捕收剂的研究

本研究合成了一种新型的绿色钛铁矿捕收剂——大豆油基羟肟酸（SOHA），并对其在钛铁矿和绿泥石之间的选择性浮选性能进行了系统评价。人工混合矿石微浮选试验表明，在中性条件下，SOHA投加量为300 mg/L， TiO2品位可达39.51 %，回收率可达94.57 %。吸附实验表明，经soha处理的钛铁矿的吸附量明显高于绿泥石。接触角和Zeta电位测试表明，SOHA选择性吸附在钛铁矿表面，形成疏水环境。经soha处理的钛铁矿的吸附性明显高于绿泥石，等电点从4.9移至3.9，有利于钛铁矿与捕收剂的相互作用。FT-IR分析表明，SOHA在钛铁矿表面形成化学吸附，而在绿泥石表面形成物理吸附。XPS进一步证实了SOHA通过化学相互作用吸附在钛铁矿表面，并通过与Si-O结构的静电相互作用弱吸附在绿泥石上。本研究表明，通过分子设计合成的大豆油基羟肟酸（SOHA）在钛铁矿—绿泥石浮选体系中表现出优异的捕收力和选择性，为开发钛铁矿绿色浮选剂提供了理论支持和技术指导。

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.