Flotation separation of bastnaesite from monazite using depressant dextrin hydrate and its depression mechanism

Wang, Weiwei; Li, Erdou; Peng, Zhang-Kuang; Guo, Chunlei; Hou, Shaochun; Li, Qiang

doi:10.1016/j.mineng.2023.108151

Cited by 6 publications

(1 citation statement)

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“…The zeta potentials of the monazite samples in the absence and presence of LF-P8 and SPA are shown in Figure 6 . The isoelectric point (IEP) of the bare monazite was 6.8, which was consistent with previous studies [ 30 , 31 ]. At pH values greater than 6.8, the monazite surface was negatively charged.…”

Section: Resultssupporting

confidence: 92%

Unravelling the Flotation Performance of 1-Hydroxy-2-naphthyl hydroxamic Acid and Styrene Phosphonic Acid Collectors on Monazite Using Experiments and DFT Calculations

Wang,

Li,

Zhu

et al. 2024

Molecules

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The atomic-level structure and electronic properties of monazite were investigated using a first-principles method based on density functional theory (DFT). First, the geometric structure of monazite was optimized, followed by calculations of its Mulliken population, electron density, and density of states, which were subsequently analyzed. The findings of this analysis suggest that monazite is highly susceptible to cleavage along the {100} plane during crushing and grinding. When SPA was utilized as the collector, the recovery rate of monazite was higher than that when LF-P8 was used. The zeta potential and adsorption energy results indicated that the zeta potential after SPA adsorption tended towards negativity, and the adsorption energy was smaller, indicating that SPA exhibited stronger adsorption performance. LF-P8 was stably adsorbed on the monazite (100) surface via mononuclear double coordination. SPA was stably adsorbed on the surface of monazite (100) via binuclear double coordination. The results of this study provide valuable insights into the adsorption of monazite by commonly used flotation collectors. These findings are of substantial importance for future endeavors in designing flotation collectors capable of achieving selective monazite flotation.

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Section: Resultssupporting

confidence: 92%