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首页> 外文期刊>Silicon >Flotation Behavior, Collector Adsorption Mechanism of Quartz and Feldspar-Quartz Systems Using PEA as a Novel Green Collector
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Flotation Behavior, Collector Adsorption Mechanism of Quartz and Feldspar-Quartz Systems Using PEA as a Novel Green Collector

机译：用豌豆作为新型绿色收藏家，石英和长石 - 石英系统的浮选行为，集电器吸附机制

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摘要

A novel green cationic surfactant Poly (propylene glycol) bis (2-aminopropyl ether) (PEA) with multiple amine groups was utilized as a collector for flotation separation of quartz from feldspar-quartz associated ore (FQA) without acid (particularly, HF) and alkali. The collecting performances and the adsorption mechanisms of PEA on the quartz/FQA were investigated through flotation experiments, ICP-OES, XRD, Zeta potential, FTIR and XPS measurements. A remarkable separation of the quartz from FQA has been realized in an environmental friendly way. The froth flotation results show that the flotation recovery of quartz is 97.79% and that of FQA is 19.30% at pH 9.00-9.50 with 10(-4) M PEA when the particle size ranges from 150 to 270 mu m. The results of batch flotation, ICP-OES and XRD analyses show that the first flotation product is almost quartz, while more feldspar and little quartz exist in the sink product when compared with the FQA feed. The mechanism of PEA acting as the collector for the separation of quartz/feldspar has been investigated. The PEA is adsorbed on the quartz surface by electrostatic and hydrogen bonding interaction with & x2500;NH3+ /& x2500;NH2 head groups, while is less adsorbed on the feldspar surface due to electrostatic repulsion between the K+ / Na+ ions and the positively charged & x2500;NH3+/& x2500;NH2 head groups of PEA. A conceptual adsorption model of the PEA cationic collector on the quartz and the FQA surfaces has been proposed.
机译：具有多个胺基的新型绿色阳离子表面活性剂聚（丙二醇）双（2-氨基丙基醚）（豌豆）作为来自Feldspar-Quartz相关矿石（FQA）的石英浮选分离的收集器（特别是HF）和碱。通过浮选实验，ICP-OES，XRD，Zeta电位，FTIR和XPS测量来研究豌豆对石英/ FQA上的豌豆的收集性能和吸附机制。从FQA的石英分离是以环保方式实现的。泡沫浮选结果表明，石英的浮选回收率为97.79％，而FQA的泡沫为19.30％，当粒径为150至270μm时，豌豆豌豆为19.00-9.50。批量浮选，ICP-OES和XRD分析结果表明，第一浮选产品几乎是石英，而与FQA饲料相比，水槽产品中存在更多的长石和小石英。研究了作为分离石英/长石分离的豌豆的机理。豌豆通过静电和氢键与＆x2500的致氢相互作用吸附在石英表面上; NH3 + /＆x2500; NH2头部组，虽然由于K + / Na +离子之间的静电排斥和带正电荷的静电排斥而吸附在长石表面上。 x2500; nh3 + /＆x2500; nh2头豌豆组。提出了石英和FQA表面上豌豆阳离子收集器的概念吸附模型。

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