| Fe3+与水玻璃组合抑制剂对萤石和方解石浮选分离的影响 |
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| 引用本文： | 宁江峰,李茂林,崔瑞,姚伟,施佳,李瑞杰.Fe3+与水玻璃组合抑制剂对萤石和方解石浮选分离的影响[J].矿产保护与利用,2020,40(6):64-70. |
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| 作者姓名： | 宁江峰 李茂林 崔瑞 姚伟 施佳 李瑞杰 |
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| 作者单位： | 1.武汉科技大学 资源与环境工程学院, 湖北 武汉 430081 |
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| 基金项目： | 武汉科技大学大学生科技创新基金 |
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| 摘 要： | 萤石和方解石表面都存在Ca2+的活性位点且两种矿物表面性质相近，导致萤石和方解石的分离难度较大。通过单矿物浮选试验、吸附量测定、Zeta电位测量以及浮选溶液化学计算，并引入Fe3+，将其与水玻璃混合，研究该组合抑制剂对萤石和方解石浮选分离的影响及其机理。浮选试验结果表明，与水玻璃相比，Fe-水玻璃选择性抑制了方解石的浮选，实现了两种矿物的分离。机理测试结果表明，Fe3+与水玻璃在溶液中反应的产物Fe-水玻璃聚合物以及水玻璃的水解组分Si（OH）4在方解石表面发生较强的吸附作用，阻碍了油酸钠的进一步吸附，从而抑制了方解石的浮选。
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| 关 键 词： | 萤石 方解石 Fe3+ 水玻璃 浮选分离 |
| 收稿时间： | 2020-10-21 |
Effect of Fe3+ and Sodium Silicate As Combination Inhibitors on Flotation Separation of Fluorite and Calcite |
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| Affiliation: | 1.College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China2.Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan 430081, China3.Changsha Research Institute of Mining and Metallurgy Limited Liability Company, Changsha 410012, China |
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| Abstract: | The separation of fluorite and calcite is difficult, because there are Ca2+ active sites on the surface of fluorite and calcite, and the surface properties of the two minerals are similar. Through single mineral flotation test, adsorption amount measurement, Zeta potential measurement and chemical calculation of flotation solution, Fe3+ was introduced and mixed with sodium silicate to study the effect of the combined inhibitor on flotation separation of fluorite and calcite and its mechanism. Flotation test results show that, Fe- sodium silicate selectively inhibits the flotation of calcite compared with sodium silicate, and realizes the separation of the two minerals. The mechanism test results show that the Fe- sodium silicate polymer formed by Fe2+ and sodium silicate in solution and the hydrolyzed component Si(OH)4 have strong adsorption on the surface of calcite, which hinders the further adsorption of sodium oleate and thus inhibits the flotation of calcite. |
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