Understanding the depression mechanism of citric acid in sodium oleate flotation of Ca2+-activated quartz: Experimental and DFT study
发布时间：2022-05-01
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影响因子：4.765
DOI码：10.1016/j.mineng.2019.105878
发表刊物：Minerals Engineering
关键字：Citric acid; Depression; Ca2+ ions; Quartz; Flotation
摘要：Quartz, a common gangue mineral, often coexists with the Ca-containing minerals in natural ore deposits, such as scheelite, apatite, fluorite and calcite. The depression of quartz in the flotation separation of these minerals is normally difficult, especially when the surface of the quartz is activated by Ca2+ ions dissolved from the calcium-bearing minerals. Thus, the search for an efficient depressant for Ca2+-activated quartz is urgent. In this study, citric acid (CA) was employed as a depressant for Ca2+-activated quartz. Microflotation results showed an improved depression efficiency of CA for the sodium oleate flotation of Ca2+-activated quartz. The depression mechanism of CA was evaluated through combined experimental and computational techniques, including zeta potential measurements, adsorption tests, Fourier transform infrared and X-ray photoelectron spectroscopy analysis, solution chemistry analysis, and density functional theory-based first principle calculations.
论文类型：期刊论文
通讯作者：田孟杰
论文编号：105878
学科门类：工学
一级学科：矿业工程
文献类型：J
卷号：140
是否译文：否
发表时间：2019-08-15
收录刊物：SCI
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