Citation: | WANG Jiali, WANG Jieliang, SHI Jingyang, WU Xu, CAO Zhao. Research Progress on Surface Property Testing Methods for Mineral Flotation[J]. Conservation and Utilization of Mineral Resources, 2025, 45(1): 101-113. doi: 10.13779/j.cnki.issn1001-0076.2025.01.004 |
Flotation is a technology that separates and purifies materials in a three−phase flow of gas, liquid, and solid based on the differences in physical and chemical properties (mainly referring to wettability) of the material surface. It is widely used for mineral separation. Studying the basic flotation behavior, wettability, surface electrical properties, adsorption, and solution chemistry of minerals is a fundamental method for determining the interaction mechanism between flotation agents and mineral surfaces. However, for many complex flotation systems, various modern testing methods are required to characterize or prove these interaction mechanisms, and to reveal the essence of the interaction between flotation agents and mineral surfaces more clearly at the microscopic level. This article comprehensively analyzes the application and research status of imaging analysis techniques such as atomic force microscopy (AFM), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and surface composition analysis techniques such as Zeta potential, infrared spectroscopy, Raman spectroscopy, X−ray photoelectron spectroscopy (XPS), time of flight secondary ion mass spectrometry (TOF−SIMS) in flotation, providing reference for the better development of flotation interface testing in the future.
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AFM working principle[2]
AFM 2D plane profile and 3D height image structure image of muscovite mica sample[7]
STEM imaging schematic[13]
Bastnaesite (Bst) and novel calcio−cerite form (Syn) form nanoscale bulk derived structures[20]
Schematic diagram of scanning electron microscope structure diagram[22]
SEM morpHology of hematite surface after PAAS adsorption[24]
SEM images: (a) Malachite treated with Na2S; (b) Malachite treated with (NH4)2SO4+Na2S[27]
(a) Differential ATR−FTIR spectra of pure agent BHA/DDA; (b) Adsorption of ilmenite by BHA/DDA at different pH (concentration: 0.2 mmol/L) [55]
Diagram of Raman spectrum structure[60]
Raman spectrum at 1064nm excitation source of calcite (a), aragonite (b), dolomite (c), magnesite (d), rhombosite (e) and pyroxene (f) [62]
XPS principle diagram[65]
Cu 2p XPS spectrum of malachite treated by Na2S[27]
XPS scanning curves of (a) bare bastnaesite, (b) hydrogenated bastnaesite, (c) OAHD−Ce3+ precipitates, and (d) OAHD[74]
Schematic diagram of TOF−SIMS principle[76]
TOF−SIMS image data of interaction between pyrite surface and EX collector (before and after oxidation modification by Fenton reagent) [84]
Image of cationic fragments C2H5N2O+ on the surface of arsenopyrite (before (a) and after (b) adding PASP) [85]