Language : English
田孟杰

Journal Publications

Understanding the depression mechanism of citric acid in sodium oleate flotation of Ca2+-activated quartz: Experimental and DFT study

Impact Factor:4.765

DOI number:10.1016/j.mineng.2019.105878

Journal:Minerals Engineering

Key Words:Citric acid; Depression; Ca2+ ions; Quartz; Flotation

Abstract: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.

Indexed by:Journal paper

Correspondence Author:田孟杰

Document Code:105878

Discipline:Engineering

First-Level Discipline:Mining Industrial Engineering

Document Type:J

Volume:140

Translation or Not:no

Included Journals:SCI

Attachments:

Minerals-Engineering-3.pdf