Comparative Study on the Effect of Pyrophosphate and Tripolyphosphate on the Flotation Separation of Arsenopyrite and Muscovite

IF 2.2 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Minerals Pub Date : 2024-07-31 DOI:10.3390/min14080785

Yunlou Qian, Mengyao Zhou, Yongde Zhang, Sayfidin Safarov, Zhen Wang

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Abstract

The aim of the study was to compare the effects and mechanism of tetrasodium pyrophosphate (TSPP) and sodium tripolyphosphate (STPP) as dispersants on the selective flotation of arsenopyrite from muscovite. The results of single-mineral flotation showed that the recovery of arsenopyrite was 81.4% when no dispersant was added. The recovery of arsenopyrite slightly decreased with increasing dosage of TSPP. When the dosage of STPP was 6 × 10−5 mol/L, the recovery of arsenopyrite was only 28.6%. Neither of the dispersants had significant influence on the muscovite flotation (<10%). However, in a mixed-mineral system, the recovery of arsenopyrite dropped significantly, and then under the action of dispersants, its recovery back up. The RPM results showed that the dispersion effect of TSPP was superior to that of STPP. The electrokinetic potential showed that the potential change value of muscovite with TSPP was −17.37 mV, while that of muscovite with STPP was −8.33 mV (pH = 8). The adsorption of TSPP onto muscovite was stronger than that of STPP. FTIR and XPS analysis confirmed that dispersants exhibited chemical adsorption with the Al atoms on muscovite and that dispersant STPP exhibited stonger adsorption than TSPP on arsenopyrite, which was consistent with flotation experiments.

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焦磷酸盐和三聚磷酸钠对浮选分离黄铜矿和绿泥石影响的比较研究

该研究旨在比较焦磷酸钠（TSPP）和三聚磷酸钠（STPP）作为分散剂对从麝香石中选择性浮选砷黄铁矿的影响和机理。单矿物浮选结果表明，不添加分散剂时，砷黄铁矿的回收率为 81.4%。随着 TSPP 用量的增加，砷黄铁矿的回收率略有下降。当 STPP 的用量为 6 × 10-5 mol/L 时，黄铜砷矿的回收率仅为 28.6%。两种分散剂对麝香石浮选的影响都不大（小于 10%）。然而，在混合矿物系统中，砷黄铁矿的回收率明显下降，然后在分散剂的作用下，其回收率又回升了。RPM 结果表明，TSPP 的分散效果优于 STPP。电动势显示，含 TSPP 的黝帘石的电动势变化值为 -17.37 mV，而含 STPP 的黝帘石的电动势变化值为 -8.33 mV（pH = 8）。TSPP 在麝香石上的吸附力强于 STPP。傅立叶变换红外光谱和 XPS 分析证实，分散剂与麝香石上的铝原子有化学吸附作用，分散剂 STPP 在砷黄铁矿上的吸附作用比 TSPP 强，这与浮选实验结果一致。

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来源期刊

Minerals MINERALOGY-MINING & MINERAL PROCESSING

CiteScore

4.10

自引率

20.00%

发文量

1351

审稿时长

19.04 days

期刊介绍： Minerals (ISSN 2075-163X) is an international open access journal that covers the broad field of mineralogy, economic mineral resources, mineral exploration, innovative mining techniques and advances in mineral processing. It publishes reviews, regular research papers and short notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.