Adsorption of ferric ions on the surface of bastnaesite and its significance in flotation

Zhu, Xinyu; Lin, Yiming; Huang, Yang; Zhu, Yimin; Shi, Changxing; Wang, Weiqing

doi:10.1016/j.mineng.2020.106588

Cited by 20 publications

(2 citation statements)

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“…Other coexisting cations like La 3+ , Pb 2+ , Al 3+ , and Fe 3+ may improve the flotation efficiency of REMs, as noted by many researchers [43,71,78,85,104,[126][127][128][129]. These cations are artificially added into the flotation pulp to make the surface of REMs more positively charged (e.g., PbOH + adsorption) and improve collector adsorption.…”

Section: Roles Of Dissolved Ions In Rare Earth Mineral Flotationmentioning

confidence: 99%

Rare Earth Elements Recovery from Primary and Secondary Resources Using Flotation: A Systematic Review

et al. 2023

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Rare earth minerals (REMs) contain rare earth elements (REEs) that are important in modern technologies due to their unique magnetic, phosphorescent, and catalytic properties. However, REMs are not only non-renewable resources but also non-uniformly distributed on the Earth’s crust, so the processing of REE-bearing secondary resources via recycling is one potential route to ensure the long-term sustainability of REE supply. Flotation—a method that separates materials based on differences in their surface wettability—is a process applied for both mineral processing and recycling of REEs, especially when the particles are fine and/or a high-purity product is required. In this review, studies about rare earth flotation from 2012 to 2021 were systematically reviewed using the PRISMA guideline. It was found that most REM flotation research works focused on finding better collectors and depressants while, for recycling, studies on advanced flotation techniques like froth flotation, ion flotation, solvent sublation, electroflotation, and adsorbing colloid flotation with an emphasis on the recovery of dissolved REEs from aqueous solutions dominated.

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Section: Roles Of Dissolved Ions In Rare Earth Mineral Flotationmentioning

confidence: 99%

Rare Earth Elements Recovery from Primary and Secondary Resources Using Flotation: A Systematic Review

et al. 2023

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“…DFT calculations demonstrated that the adsorbed ferric ions prevented contact between the H205 anions and REE cations on the surface of bastnaesite. Thus, bidentate adsorption of ferric ions reduced the number of active sites [20] . Other studies have investigated the interaction between various ions and the surface of bastnaesite [ 21 , 22 ], but often only account for several metal ions in the bastnaesite flotation system without considering the ions and molecules attributed to dissolved gangue.…”

Section: Introductionmentioning

confidence: 97%