Utilization of lead ions to improve surface hydrophobicity and flotation recovery of sulfidized smithsonite

Wang, Meili; Zhao, Wenjuan; Han, Guang; Feng, Qicheng

doi:10.1016/j.colsurfa.2023.131126

Cited by 10 publications

(3 citation statements)

References 27 publications

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“…The hydrophobicity of the mineral surface can be reflected by the size of the contact angle . Generally speaking, the more hydrophobic the mineral surface, the larger the contact angle, which means that the mineral particles are more capable of floating in water. − As shown in Figure , the initial contact angles of smithsonite and calcite are similar to those of previous studies, which are 34.1 and 42.1°, respectively. , When the dosage of TPA was 4.0 × 10 –4 mol/L, the contact angle of the smithsonite increased to 119.9°, higher than 108.3°, after the interaction with the same dosage of NaOL. Meanwhile, the contact angle of calcite after the interaction with 4.0 × 10 –4 mol/L TPA is only 62.1°, which is much smaller than 127.8° after the interaction with the same dosage of NaOL.…”

Section: Resultssupporting

confidence: 72%

“…33−35 As shown in Figure 9, the initial contact angles of smithsonite and calcite are similar to those of previous studies, which are 34.1 and 42.1°, respectively. 36,37 When the dosage of TPA was 4.0 × 10 −4 mol/L, the contact angle of the smithsonite increased to 119.9°, higher than 108.3°, after the interaction with the same dosage of NaOL. Meanwhile, the contact angle of calcite after the interaction with 4.0 × 10 −4 mol/L TPA is only 62.1°, which is much smaller than 127.8°after the interaction with the same dosage of NaOL.…”

Section: Contact Angle Testsmentioning

confidence: 99%

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Novel 3-Tetradecylamine Propyl Amidoxime Collector for Selective Adsorption on the Surface of Smithsonite for Flotation Separation of Smithsonite from Calcite

Ouyang,

Huang,

Wang

et al. 2023

Ind. Eng. Chem. Res.

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Smithsonite has similar physicochemical properties and floatability to calcite, which makes it difficult to achieve flotation separation of smithsonite from calcite with conventional collectors. In this article, a novel 3-tetradecylamine propyl amidoxime (TPA) collector was prepared for the flotation of smithsonite. The microflotation experiments showed that the recovery of smithsonite could reach 93.5% at a dosage of 4.0 × 10–4 mol/L of TPA under neutral conditions, while the recovery of calcite was only 20.5%, which demonstrated excellent collection ability and selectivity. The adsorption mechanism of TPA with smithsonite was investigated by further experiments. The contact angle test indicated that TPA could increase the contact angle of smithsonite from 34.1 to 119.9°, significantly enhancing its surface hydrophobicity. It was concluded from the zeta potential test that the TPA adsorbed on smithsonite could increase its positive potential but had no significant effect on calcite. Density functional theory calculations revealed that the TPA has very low HOMO and LUMO values, thus the adsorption of the –C(NOH)N+H3 group on the surface of smithsonite surface is formed by electrostatic interaction, while Fourier transform infrared spectroscopy showed that the adsorption is selective for smithsonite. Therefore, this work is expected to provide an efficient collector for the purification of smithsonite ore and shows great potential for environmental protection and mineral resource recycling.

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Section: Resultssupporting

confidence: 72%

Section: Contact Angle Testsmentioning

confidence: 99%

Novel 3-Tetradecylamine Propyl Amidoxime Collector for Selective Adsorption on the Surface of Smithsonite for Flotation Separation of Smithsonite from Calcite

Ouyang,

Huang,

Wang

et al. 2023

Ind. Eng. Chem. Res.

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“…The effect of dissolved ions in flotation was mostly studied in the flotation of soluble salt minerals such as potash, trona, and borax [20][21][22][23][24]. However, there are also studies on nonsoluble ores [25][26][27][28][29] and coal [16].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Frequently Found Ions in the Flotation of Pb-Zn Sulfide Ores on Air/Water Interface

Gungoren,

Muse,

Terzi

et al. 2023

Minerals

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The aqueous ions influence the properties of air bubbles and, therefore, the recovery of flotation. This study aims to reveal the synergistic effect of frequently found ions in the flotation of Pb-Zn sulfide ores. In this context, dynamic surface tension measurements, bubble coalescence time, Sauter mean diameter (SMD), bubble size distribution (BSD), and dynamic foam stability (DFS) measurements were carried out using artificial process waters (APWs). APW with the minimum ion concentration is expressed as “APW1” with the ionic strength (I) of 0.03 mol/dm3. The concentration of the ions in APW1 was increased by 3, 5, and 10 times, and thus APW3 (I = 0.08 mol/dm3), APW5 (I = 0.13 mol/dm3), and APW10 (I = 0.26 mol/dm3) were prepared, respectively. The results of this study indicated that the surface tension increased slightly in the presence of APW related to the ion concentration. Potassium ethyl xanthate (KEX) at high concentrations was effective in the reduction of surface tension. As the APW concentration increased, finer bubbles were obtained with a narrower size range. The stability of the foam increased with butyl glycol (BG) and APW concentration. There was no need to use a frother (BG) for the flotation experiments in the presence of APW1 or APWs with higher ionic strength.

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Effect of calcium ions on the surface properties of heterogenite and conducive to sulfidization flotation: Insight from oxygen vacancy

Gao,

Wang,

Zhang

2023

Applied Surface Science

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Utilization of lead ions to improve surface hydrophobicity and flotation recovery of sulfidized smithsonite

Cited by 10 publications

References 27 publications

Novel 3-Tetradecylamine Propyl Amidoxime Collector for Selective Adsorption on the Surface of Smithsonite for Flotation Separation of Smithsonite from Calcite

Novel 3-Tetradecylamine Propyl Amidoxime Collector for Selective Adsorption on the Surface of Smithsonite for Flotation Separation of Smithsonite from Calcite

Synergistic Effect of Frequently Found Ions in the Flotation of Pb-Zn Sulfide Ores on Air/Water Interface

Effect of calcium ions on the surface properties of heterogenite and conducive to sulfidization flotation: Insight from oxygen vacancy

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