Novel Collector of a Dodecylpyridinium Chloride Ionic Liquid in the Reverse Flotation Separation of Muscovite from Apatite

作者：Cheng Liu, Sitong Han, Yangge Zhu, Wei Xu, Siyuan Yang · 发表于：Langmuir · 年份：2025 · DOI：10.1021/acs.langmuir.4c04703 · 被引用次数：10 · 研究领域：Minerals Flotation and Separation Techniques、Extraction and Separation Processes、Metal Extraction and Bioleaching

Reverse flotation separation of muscovite from apatite using a dodecylpyridinium chloride (DPDC) ionic liquid as the collector was studied in this work. The microflotation results depicted that DPDC had a strong collecting for muscovite but had a slight collecting for apatite when using phosphoric acid as a depressant for apatite in a weakly acidic pH value pulp, artificial mixture mineral flotation showed that reverse flotation separation of muscovite from apatite can be effectively achieved in the reagent scheme of phosphoric acid/DPDC, and DPDC had a better separation performance in the muscovite/apatite system than DDA. The adsorption measurements indicated that the adsorption amount of DPDC on the apatite surface was less than that of DPDC on the muscovite surface, and the zeta potential results confirmed that a strong interaction occurred between DPDC and the muscovite surface, while an extremely weak interaction occurred between DPDC and the apatite surface in the presence of phosphoric acid at pH ∼ 5.5. XPS analysis indicated that a hydrogen bond occurred between DPDC and the muscovite surface. Thus, it was inferred that DPDC could be used as an appreciation collector for the reverse flotation of muscovite from apatite.