Rutile-quartz separation in benzohydroxamic acid and sodium oleate flotation systems

Next Materials Pub Date : 2025-02-12 DOI:10.1016/j.nxmate.2025.100525

Zhiguo Yu , Lihua Peng , Bin Zhang , Peng Zou , Zechen Hu , Yongsheng Ji , Deren Yang , Xuegong Yu

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Abstract

Despite being a popular rutile-quartz mineral separation method, traditional flotation is often inefficient, expensive, and causes environmental pollution. In this study, we propose a novel method for the efficient flotation-based separation of rutile from quartz by using a combination of benzohydroxamic acid (BHA) and sodium oleate (NaOL). By utilizing X-ray powder diffraction (XRD), X-ray fluorescence spectrometry (XRF), ultraviolet-visible absorption (UV-Vis) spectroscopy, Fourier-transformed infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and zeta potential analysis, we investigated the mineral flotation behavior and collector adsorption mechanism. The single mineral flotation experiments indicated that BHA and NaOL could effectively promote rutile floating, with up to 84.5 % flotation recovery at pH 9. At a rutile:quartz mass ratio of 1:3, the titanium oxide (TiO₂) grade reached 61.5 %, with a rutile flotation recovery of 77.0 % for the froth products. We finally established a dual-mode flotation model to explain the flotation separation mechanism of rutile and quartz using the combined BHA+NaOL collector.

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苯甲羟肟酸和油酸钠浮选系统中金红石-石英的分离

传统浮选虽然是一种比较流行的金红石-石英矿物分离方法，但其效率低、成本高、环境污染严重。在这项研究中，我们提出了一种利用苯甲羟肟酸（BHA）和油酸钠（NaOL）的组合浮选分离金红石和石英的新方法。利用x射线粉末衍射（XRD）、x射线荧光光谱（XRF）、紫外可见吸收（UV-Vis）光谱、傅里叶变换红外光谱（FTIR）、x射线光电子能谱（XPS）和zeta电位分析等手段，研究了矿物的浮选行为和捕收剂的吸附机理。单矿物浮选试验表明，BHA和NaOL能有效促进金红石的浮选，pH为9时浮选回收率可达84.5 %。当金红石与石英质量比为1:3时，泡沫产物的氧化钛（TiO2）品位可达61.5 %，金红石浮选回收率为77.0% %。最后建立了双模式浮选模型来解释BHA+NaOL组合捕收剂对金红石和石英的浮选分离机理。

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