Open-Circuit Technology of Zinc Oxide Ore Flotation with Ternary Collector and Its Adsorption Characteristics on Smithsonite Surface

IF 2.2 4区地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS

Minerals Pub Date : 2024-09-02 DOI:10.3390/min14090902

Zhiwei Li, Qicheng Feng, Qian Zhang, Shuming Wen

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Abstract

The sulfidization-amine flotation method is commonly used for the beneficiation of zinc oxide ores. Lanping zinc oxide ores contains 8.40% zinc, with the main mineral being smithsonite; additionally, they have a high mud content. Conventional sulfidization–ammonium flotation presents a low flotation index and unsatisfactory flotation froth. A new open-circuit technology is employed to treat Lanping zinc oxide ores, where Na2S, KG-248, and dodecyl amine + sodium isoamyl xanthate + ammonium dibutyl dithiophosphate are used as the regulator, depressant, and ternary collector, respectively. Consequently, the flotation indices for the zinc grade and recovery are 28.71% and 86.24%, respectively, and the flotation froth becomes more stable. Subsequently, the flotation behavior and adsorption mechanism of smithsonite with a ternary collector are investigated. The flotation recovery of smithsonite increases to 94.40% after treatment with the ternary collector. Surface-analysis results indicate that the ternary collector can synergistically adsorb onto the sulfidized smithsonite surface to enhance its hydrophobicity, thus increasing the floatability of smithsonite. Meanwhile, the total consumption of the collector in the ternary-collector system is lower than that in the binary- or unitary-collector system.

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三元捕收剂浮选氧化锌矿石的开路技术及其在史密松岩表面的吸附特性

硫化-胺浮选法常用于氧化锌矿石的选矿。兰坪氧化锌矿石含锌量为 8.40%，主要矿物为铁闪锌矿，含泥量较高。传统的硫化-铵浮选法浮选指数低，浮选泡沫不理想。在处理兰坪氧化锌矿石时，采用了一种新的开路技术，分别使用 Na2S、KG-248 和十二烷基胺 + 异戊基黄原酸钠 + 二丁基二硫代磷酸铵作为调节剂、抑制剂和三元捕收剂。结果，锌品位和回收率的浮选指数分别为 28.71% 和 86.24%，浮选泡沫变得更加稳定。随后，研究了三元捕收剂对铁闪锌矿的浮选行为和吸附机理。经三元捕收剂处理后，铁石棉的浮选回收率提高到 94.40%。表面分析结果表明，三元捕收剂能协同吸附在硫化的铁石棉表面，增强其疏水性，从而提高铁石棉的可浮性。同时，三元收集器系统中收集器的总消耗量低于二元或单元收集器系统。

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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.