Investigation on the flotation separation of fluorite from celestite using a novel depressant: Sodium polynaphthalene formaldehyde sulfonate

Tian, Jia; Hong, Kai Jeat; Zhang, Xingfei; Wang, Yufeng; Han, Haisheng; Sun, Wei; Zeng, Xiaobo

doi:10.1016/j.mineng.2021.107080

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…The pH of the pulp was 8. Because the pulp pH increased to signify strong alkalinity, the fluorite recovery decreased, which is consistent with previous results. − Notably, PHA exhibits favorable collecting performance for fluorite.…”

Section: Methodssupporting

confidence: 91%

Flotation Behavior and Adsorption Mechanism of Phenylpropyl Hydroxamic Acid As Collector Agent in Separation of Fluorite from Calcite

Mao

Xie

et al. 2023

Langmuir

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The hydroxylamine method involves the synthesis of a new hydroxamic acid collector, i.e., phenylpropyl hydroxamic acid (PHA), from methyl cinnamic hydroxamic acid. Flotation test results show that PHA exhibits good selective collection ability. The adsorption mechanism of PHA is investigated using the zeta potential, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The results show that PHA formed a new Ca–O bond with Ca2+ on the fluorite surface via chemical adsorption. A new five-element chelated hydroxamate group may have formed in Ca on the fluorite surface. The PHA selectivity is fully explained via density functional theory (DFT) calculations, and an adsorption model is established.

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Section: Methodssupporting

confidence: 91%

Flotation Behavior and Adsorption Mechanism of Phenylpropyl Hydroxamic Acid As Collector Agent in Separation of Fluorite from Calcite

Mao

Xie

et al. 2023

Langmuir

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“…Currently, flotation is the most common physical beneficiation process to purify and recover valuable substances from solid matter [22,23]. It is also the most frequently used method to recover natural fluorine resources, fluorite [24,25].…”

Section: Introductionmentioning

confidence: 99%

Combing Seeding Crystallization with Flotation for Recovery of Fluorine from Wastewater: Experimental and Molecular Simulation Studies

Zhang,

Kou,

Sun

2023

Molecules

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For effective removal and utilization of fluorine resources from industrial wastewater, stepwise removal and recovery of fluorine were accomplished by seeding crystallization and flotation. The effects of seedings on the growth and morphology of CaF2 crystals were investigated by comparing the processes of chemical precipitation and seeding crystallization. The morphologies of the precipitates were analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM) measurements. The seed crystal, fluorite, helps improve the growth of perfect CaF2 crystals. The solution and interfacial behaviors of the ions were calculated by molecular simulations. The existing perfect surface of fluorite was proven to provide the active sites for ion adhesion and formed a more ordered attachment layer than the precipitation procedure. The precipitates were then floated to recover calcium fluoride. By stepwise seeding crystallization and flotation, the products with a CaF2 purity of 64.42% can be used to replace parts of metallurgical-grade fluorite. Both removal of fluorine from wastewater and the reutilization of the fluorine resource were realized.

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Flotation separation of fluorite and calcite using anhydrous glucose and aluminum sulfate as a combined depressant

Jin

Sun

Wang

et al. 2023

Applied Surface Science

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Investigation on the flotation separation of fluorite from celestite using a novel depressant: Sodium polynaphthalene formaldehyde sulfonate

Cited by 5 publications

References 15 publications

Flotation Behavior and Adsorption Mechanism of Phenylpropyl Hydroxamic Acid As Collector Agent in Separation of Fluorite from Calcite

Flotation Behavior and Adsorption Mechanism of Phenylpropyl Hydroxamic Acid As Collector Agent in Separation of Fluorite from Calcite

Combing Seeding Crystallization with Flotation for Recovery of Fluorine from Wastewater: Experimental and Molecular Simulation Studies

Flotation separation of fluorite and calcite using anhydrous glucose and aluminum sulfate as a combined depressant

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