木犀草素作为新型抑制剂从方解石中浮选分离白钨矿

李小康; 张英; 何海洋; 吴宇; 武丹宇; 管侦皓

doi:10.1007/s12613-023-2755-x

Volume 31 Issue 3

Mar. 2024

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文章导航 > 矿物冶金与材料学报（英文） > 2024 > 31(3): 462-472

Xiaokang Li, Ying Zhang, Haiyang He, Yu Wu, Danyu Wu, and Zhenhao Guan, Flotation separation of scheelite from calcite using luteolin as a novel depressant, Int. J. Miner. Metall. Mater., 31(2024), No. 3, pp. 462-472. https://doi.org/10.1007/s12613-023-2755-x

Cite this article as:

Xiaokang Li, Ying Zhang, Haiyang He, Yu Wu, Danyu Wu, and Zhenhao Guan, Flotation separation of scheelite from calcite using luteolin as a novel depressant, Int. J. Miner. Metall. Mater., 31(2024), No. 3, pp. 462-472. https://doi.org/10.1007/s12613-023-2755-x

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研究论文

木犀草素作为新型抑制剂从方解石中浮选分离白钨矿

1)
昆明理工大学国土资源工程学院, 昆明650093
2)
昆明理工大学复杂有色金属资源清洁利用国家重点实验室, 昆明650093

通讯作者:
张英 E-mail: zhyingcsu@163.com

文章亮点

（1）首次提出木犀草素作为白钨矿与方解石浮选分离的抑制剂。

（2）系统地研究了木犀草素在白钨矿与方解石浮选中的抑制机理。

（3）木犀草素作为一种抑制剂，具有环境友好、高效和易于获得的优点。

中文摘要

本文提出木犀草素（LUT）作为一种新型抑制剂，用于油酸钠（NaOL）体系中白钨矿和方解石的浮选分离。通过微浮选试验证实了LUT作为方解石抑制剂的适用性。在pH=9时，当LUT浓度为50 mg·L^–1，NaOL浓度为50 mg.L^–1时，白钨矿的回收率达到80.3%，而方解石的回收率为17.6%，表明此时两种矿物的可浮性存在显著差异。随后，使用吸附容量测试、Zeta电位分析、傅立叶变换红外光谱（FT-IR）、X射线光电子能谱（XPS）和原子力显微镜（AFM）对LUT处理后白钨矿和方解石的表面性质变化进行了表征，研究了LUT对方解石的选择性抑制机理。吸附容量测试和Zeta电位分析表明，LUT在方解石表面有显著的吸收，从而阻碍油酸钠的进一步吸附，而其对白钨矿的影响最小。FT-IR和XPS分析揭示了LUT在方解石表面的选择性吸附，在羟基和存在的钙离子之间形成了强的化学吸附键。AFM直接说明了LUT在两种矿物类型上的不同吸附密度。因此，LUT可以有效地作为方解石的抑制剂，使白钨矿和方解石能够成功分离。

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Research Article

Flotation separation of scheelite from calcite using luteolin as a novel depressant

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Abstract

Abstract

This paper proposes luteolin (LUT) as a novel depressant for the flotation-based separation of scheelite and calcite in a sodium oleate (NaOL) system. The suitability of LUT as a calcite depressant is confirmed through micro-flotation testing. At pH = 9, with LUT concentration of 50 mg·L^–1 and NaOL concentration of 50 mg·L^–1, scheelite recovery reaches 80.3%. Calcite, on the other hand, exhibits a recovery rate of 17.6%, indicating a significant difference in floatability between the two minerals. Subsequently, the surface modifications of scheelite and calcite following LUT treatment are characterized using adsorption capacity testing, Zeta potential analysis, Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). The study investigates the selective depressant mechanism of LUT on calcite. Adsorption capacity testing and Zeta potential analysis demonstrate substantial absorption of LUT on the surface of calcite, impeding the further adsorption of sodium oleate, while its impact on scheelite is minimal. FT-IR and XPS analyses reveal the selective adsorption of LUT onto the surface of calcite, forming strong chemisorption bonds between the hydroxyl group and calcium ions present. AFM directly illustrates the distinct adsorption densities of LUT on the two mineral types. Consequently, LUT can effectively serve as a depressant for calcite, enabling the successful separation of scheelite and calcite.
- scheelite;
- calcite;
- luteolin;
- flotation;
- depressant;
- separation

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References

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