以链烯酸为捕收剂的铅活化锡石浮选机理

IF 1.5 4区 工程技术 Q3 METALLURGY & METALLURGICAL ENGINEERING Mining, Metallurgy & Exploration Pub Date : 2024-06-19 DOI:10.1007/s42461-024-01018-x
Qinbo Cao, Yan Yan, Haiyu Zhang, Yanjun Li, Dianwen Liu, Anh V. Nguyen
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引用次数: 0

摘要

本文研究了以廉价且环保的蓖麻油酸(RA)作为捕收剂从矿石中浮选锡石(SnO2)的过程。通过使用 X 射线光电子能谱 (XPS)、飞行时间二次离子质谱 (TOF-SIMS) 和傅立叶变换红外光谱 (FTIR),进一步研究确定了 RA 和铅阳离子的表面性质(疏水性和表面电位)和吸附的变化,从而解释和支持了浮选结果。表面(zeta)电位测量和 TOF-SIMS 的结果表明,铅活化 SnO2 表面的 RA 阴离子含量高于天然 SnO2 表面。XPS 结果显示,RA 阴离子与天然二氧化锡表面的锡原子结合。相反,在活化的二氧化锡表面,RA 阴离子与铅原子而非锡原子发生反应,从而提高了铅活化二氧化锡的可浮性。在铅活化的表面上出现了 Pb(RA)2 沉淀,Pb(RA)2 中的两个 RA 阴离子之间形成了 H 键,从而使收集物物种在二氧化锡表面更紧密地结合在一起。这项研究成果为成本效益高且环保的 RA 捕收剂在锡石浮选中的应用提供了启示。
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Flotation Mechanism of Lead-Activated Cassiterite with Ricinoleic Acid as a Collector

This paper investigates the flotation of cassiterite (SnO2) from ore using ricinoleic acid (RA) as a collector which is cheap and environmentally friendly. It is shown that the flotation is significantly enhanced by the activation of lead cations at pH 8. The flotation results are explained and supported by further studies to determine the changes in surface properties (hydrophobicity and surface potentials) and adsorption of RA and lead cations using X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry (TOF-SIMS), and FTIR. The results of surface (zeta) potential measurements and TOF-SIMS indicate that the amount of RA anions on the Pb-activated SnO2 surface was higher than that on the natural SnO2 surface. The XPS results revealed that RA anions were bound to the Sn atoms on the natural SnO2 surface. In contrast, RA anions reacted with the Pb atoms instead of Sn atoms on the activated SnO2 surface, improving the floatability of Pb-activated SnO2. Pb(RA)2 precipitation occurred on the Pb-activated surface, and H bonds were formed between two RA anions in Pb(RA)2, which lead to a tighter assembly of collector species on the SnO2 surface. The outcomes of this research shed light on the application of the cost-effective and environmentally friendly RA collector in cassiterite flotation.

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来源期刊
Mining, Metallurgy & Exploration
Mining, Metallurgy & Exploration Materials Science-Materials Chemistry
CiteScore
3.50
自引率
10.50%
发文量
177
期刊介绍: The aim of this international peer-reviewed journal of the Society for Mining, Metallurgy & Exploration (SME) is to provide a broad-based forum for the exchange of real-world and theoretical knowledge from academia, government and industry that is pertinent to mining, mineral/metallurgical processing, exploration and other fields served by the Society. The journal publishes high-quality original research publications, in-depth special review articles, reviews of state-of-the-art and innovative technologies and industry methodologies, communications of work of topical and emerging interest, and other works that enhance understanding on both the fundamental and practical levels.
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