| 钙镁离子对长石和绿帘石浮选的影响及其作用机理 |
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| 引用本文： | 曾维伟,刘旭.钙镁离子对长石和绿帘石浮选的影响及其作用机理[J].矿冶工程,2022,42(3):59-63. |
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| 作者姓名： | 曾维伟 刘旭 |
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| 作者单位： | 1.中南大学 资源加工与生物工程学院, 湖南 长沙 410083;
2.湖南有色金属职业技术学院, 湖南 株洲 412006;
3.长沙矿冶研究院有限责任公司, 湖南 长沙 410012 |
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| 基金项目： | 湖南省自然科学基金(2019JJ70009,2020JJ7059)；;湖南省教育厅科学研究项目(18C1632)；;2018年度湖南省普通高校青年骨干教师培养项目； |
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| 摘 要： | 通过小型浮选试验、动电位测试、吸附试验、溶液化学计算和红外光谱分析等手段研究了油酸钠体系下Ca2+和Mg2+对长石和绿帘石浮选的影响。结果表明, 纯净的长石和绿帘石矿物几乎不浮, 加入Ca2+、Mg2+后, 矿物可浮性得到改善;钙镁离子主要以Ca2+、CaOH+、CaCO3(s)和Mg2+、MgOH+、MgCO3(s)形式吸附在矿物表面;油酸钠和钙镁离子在长石和绿帘石矿物表面存在静电吸附, 且钙镁离子可以促进油酸钠在矿物表面的吸附。
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| 关 键 词： | 长石 绿帘石 钙离子 镁离子 浮选 油酸钠 吸附 |
| 收稿时间： | 2021-12-06 |
Effect and Mechanism of Calcium and Magnesium Ions in Flotation of Feldspar and Epidote |
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| ZENG Wei-wei,LIU Xu.Effect and Mechanism of Calcium and Magnesium Ions in Flotation of Feldspar and Epidote[J].Mining and Metallurgical Engineering,2022,42(3):59-63. |
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| Authors: | ZENG Wei-wei LIU Xu |
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| Affiliation: | 1.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China;
2.Hunan Nonferrous Metals Vocational and Technical College, Zhuzhou 412006, Hunan, China;
3.Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China |
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| Abstract: | The effect of Ca2+ and Mg2+ on the flotation of feldspar and epidote minerals with sodium oleate was investigated by performing small-scale flotation test, Zeta potential test, adsorption capacity test, solution chemistry calculation and fourier transform infrared spectroscopy analysis. It is found that pure feldspar and epidote minerals are hardly floated, but an addition of Ca2+ and Mg2+ can improve the flotability of the minerals. Calcium and magnesium ions are adsorbed on the surface of minerals in the form of Ca2+, CaOH+, CaCO3(s) and Mg2+, MgOH+, MgCO3(s), respectively. Sodium oleate, calcium and magnesium ions are electrostatically adsorbed onto the surface of feldspar and epidote minerals, and
the ions can promote the adsorption of sodium oleate on the surface of minerals. |
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| Keywords: | feldspar epidote calcium ion magnesium ion flotation sodium oleate adsorption |
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