The influence of temperature during flotation of celestite and calcite with sodium oleate and quebracho

Castro, F. Hernáinz Bermúdez de; Borrego, A. Gálvez

doi:10.1016/0301-7516(95)00059-3

Cited by 30 publications

(4 citation statements)

References 3 publications

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“…TA (Figure 1) is usually considered amorphous and comprises a large number of similar carboxyl and phenolic hydroxyl groups that have a special affinity for metal ions, such as calcium ions (Xu et al 2019). It has been demonstrated that TA can be anchored to the surface of calcite and fluorite by bonding with calcium atoms (Bermúdez and Hoces 1993; Ozcan and Bulutcu 1993; Bermúdez and Borrego 1996; Rutledge and Anderson 2015; Zhang et al 2018; Tangarfa and Hassani 2022). Notably, these early studies were limited to brief investigations to reveal the occurrence of adsorption reactions between TA and the surfaces of fluorite and calcite.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of tannic acid as depressant in the flotation separation of fluorite and bastnaesite

Guo,

Hou,

Jin

et al. 2023

Mineral Processing and Extractive Metallurgy: Transactions of t

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Fluorite, a strategic industrial mineral, was investigated for flotation separation from bastnaesite with tannic acid (TA) as depressant. In this study, the adsorption analysis indicates that the adsorption density of TA on bastnaesite was greater than that of fluorite. The zeta potential, Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) provide the evidence that chemisorption and electrostatic attraction occurred simultaneously between TA and fluorite or bastnaesite at optimal pH, the latter also involving hydrogen bonding interactions. Furthermore, the micro-flotation and batch flotation results suggest that TA could effectively depress bastnaesite with a negligible effect on fluorite at low concentrations, and that TA attached to the surface of bastnaesite precluded the adsorption of phthalic acid (PA) as collector, whereas it could be adsorbed on the fluorite surface. These findings offer a robust theoretical foundation and valid guidance for the flotation separation of fluorite from bastnaesite in industrial processes.

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Section: Introductionmentioning

confidence: 99%

Adsorption of tannic acid as depressant in the flotation separation of fluorite and bastnaesite

Guo,

Hou,

Jin

et al. 2023

Mineral Processing and Extractive Metallurgy: Transactions of t

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“…400 MHz 1 H NMR (chloroform-d, TMS, ppm): δ 0.84 (t, 6H, J = 6.8 Hz, 2 CH 3 ), 1. 18 Microflotation Experiments. Effect of Collector Dosage at 298 K. The flotation results with BDB and DA were compared at 298 K. Figure 9a reveals that the recovery of lepidolite grows rapidly at less than 1 × 10 −4 mol/L BDB and 6 × 10 −4 mol/L DA when the concentration goes up, and then tends to be stable as the collector concentration continues to increase.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Unfortunately, the traditional reagents mentioned above are monomeric, which means that they have only a single hydrophobic/hydrophilic group. − The monomeric surfactant has low flotation efficiency and must be used in large quantities at low-temperature flotation, which will result in a large amount of wastewater with high reagent concentration. − In order to solve this problem, it is time to introduce a new collector.…”

Section: Introductionmentioning

confidence: 99%

Recycling Lepidolite from Tantalum–Niobium Mine Tailings by a Combined Magnetic–Flotation Process Using a Novel Gemini Surfactant: From Tailings Dams to the “Bling” Raw Material of Lithium

Huang

Zhang

Cheng

et al. 2020

ACS Sustainable Chem. Eng.

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On January 25, 2019, the tailings dam at Vale's Coŕrego do Feijao mine (Brumadinho, Minas Gerais, Brazil) ruptured, releasing about 12 million cubic meters of tailings, killing over 240 people and posing a considerable and ongoing environmental hazard. Thus, the recovery of valuable minerals from tailings can contribute to a sustainable disposal of this hazardous residue, saving human lives and protecting the environment. The tailings of a tantalum−niobium mine usually contain a considerable amount of lepidolite resource. Nonetheless, the method of sustainably acquiring the lepidolite resource from tailings of a tantalum−niobium mine at lowtemperature environments has always been needed. In this study, we synthesize a new amine-based gemini surfactant, butanediyl-α,ω-bis-(dimethyldodecylammonium bromide) (BDB). It is introduced as a collector in the flotation of lepidolite from the tantalum−niobium mine tailings for the first time at low temperatures. We compare its capability to collect lepidolite with the monomeric surfactant 1-dodecylamine (DA). In bench-scale flotation experiments, the Li 2 O recovery of lepidolite concentrate with 80 g/t BDB was 10.96% and 31.85% higher than that with 160 g/t DA at 298 and 275 K, respectively, which indicated that BDB is a better collector for lepidolite than DA. BDB is a novel and superior collector for disposing of lepidolite tailings ponds.

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“…Flotation is widely used in the beneficiation of celestite due to the low cost and easy operation [4,5]. The practical mineral flotation pulp is characterized by complicated ion composition, which has significant influence on mineral surface properties and solution chemistry properties, therefore leading to an inevitable effect on flotation results [6].…”

Section: Introductionmentioning

confidence: 99%

Interaction Mechanism of Ferric Ions with Celestite Surface and Implications for Flotation Recovery

Cao

et al. 2019

Minerals

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In practical celestite flotation, iron contamination is commonly found on celestite surfaces. The effect of ferric ions on celestite flotation was assessed by a combination of ion release experiments, DFT calculation, X-ray photoelectron spectroscopy (XPS) analysis, adsorption isotherm study, and flotation experiments in this work. The ion release experiments showed that the associated limonite released ferric ions to solution. According to DFT calculation and surface complexation theory, we found that ≡SrOH0 and ≡SO4H0 are primary functional groups on celestite surface in aqueous environments. The XPS analysis and adsorption isotherm study revealed that ferric ions mainly adsorbed on celestite surface by complexing with two oxygen atoms of surface ≡SrOH0 groups to form ≡Sr–O–Fe–OH precipitates. Flotation results showed that ferric ions strongly depressed celestite flotation. Combined with the change in surface properties determined by XPS, it can be concluded that the adsorption of ferric ions on celestite surface decreased adsorption sites for the collector, and hence, led to depression on celestite flotation.

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The influence of temperature during flotation of celestite and calcite with sodium oleate and quebracho

Cited by 30 publications

References 3 publications

Adsorption of tannic acid as depressant in the flotation separation of fluorite and bastnaesite

Adsorption of tannic acid as depressant in the flotation separation of fluorite and bastnaesite

Recycling Lepidolite from Tantalum–Niobium Mine Tailings by a Combined Magnetic–Flotation Process Using a Novel Gemini Surfactant: From Tailings Dams to the “Bling” Raw Material of Lithium

Interaction Mechanism of Ferric Ions with Celestite Surface and Implications for Flotation Recovery

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