A study on novel reactive oily bubble technology enhanced collophane flotation

Zhou, Fang; Wang, Louxiang; Xu, Zhenghe; Ruan, Yaoyang; Chi, Ruan

doi:10.1016/j.minpro.2017.10.011

Cited by 10 publications

(5 citation statements)

References 11 publications

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“…Soto et al (1985) found that the recovery of francolite decreased precipitously to zero when all the amine was replaced by kerosene, meanwhile kerosene was not adsorbed on francolite surface by adsorption tests. Zhou et al (2017a) also found that the recovery of phosphate mineral is zero in the micro-flotation of phosphate mineral using oily bubbles (only kerosene), which is consistent with the law that the induction time was too long and the contact angle was zero. 3, which reveals the variation of the interaction strength between the coadsorption configuration and the fluorapatite (001) surface.…”

Section: Computational Modelssupporting

confidence: 80%

“…The addition of kerosene to the slurry increased the viscosity between the mineral surface and the flotation bubbles and enhanced the adsorption of the fatty acid collector on the mineral surface. Zhou et al (2017a) demonstrated the strong collecting ability of these bubbles on phosphate using kerosene bubbles containing fatty acids. Sis (2001) showed that flotation of phosphate ores with non-polar oil as an auxiliary collector can reduce the amount of collector and can prevent excessive foaming.…”

Section: Introductionmentioning

confidence: 98%

“…To address these problems, kerosene is usually added as an assisted collector to change the polarity of the fatty acid molecules during flotation. Although kerosene has a low solubility as a molecular collector and is difficult to dissolve in water (Zhao et al, 2015), the oily molecules can act as a carrier in the flotation process (Zhou et al, 2017a). Ralston et al (1984) used oil droplets for flotation of calcite, which can effectively separate quartz from calcite.…”

Section: Introductionmentioning

confidence: 99%

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DFT study of coadsorption of fatty acid and kerosene on fluorapatite (001) surface

Du¹,

Li²,

Zhang³

2023

Physicochem. Probl. Miner. Process.

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The adsorption of fatty acid, kerosene and fatty acid-kerosene on fluorapatite (001) surface were investigated by density functional theory (DFT) calculations. The results showed that the single fatty acid could form stable chemisorption on fluorapatite (001) surface by the O of fatty acids bonding with Ca1 site. The single kerosene could not be stably adsorbed on fluorapatite (001) surface because the H of kerosene did not form hydrogen bond with the O of PO43- on (001) surface (Osurf). For the coadsorption conformation, the chemisorption of fatty acid-kerosene on fluorapatite (001) surface was contributed by the interaction between O of fatty acids and Ca1, the H of kerosene did not bond with the Osurf, but the carbon chain length of kerosene has a large influence on the coadsorption. Compared with the coadsorption of fatty acid-decane, the adsorption of butyric acid-tetradecane and octanoic acid-tetradecane on fluorapatite (001) surface have greater adsorption energies and overlapping region of DOS between O 2p and Ca 4d, indicating that there is a synergistic effect between fatty acid and tetradecane. Meanwhile, the collaborative effects exist between the molecules of fatty acids. The interpenetrating adsorption of fatty acid and kerosene on the fluorapatite surface could improve the adsorption strength and density. The flotation test further confirmed that the single kerosene could not collect fluorapatite, but it could be collected by the single fatty acid. Besides, the synergistic effect between fatty acid and kerosene could increase the flotation recovery of fluorapatite.

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Section: Computational Modelssupporting

confidence: 80%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

DFT study of coadsorption of fatty acid and kerosene on fluorapatite (001) surface

Du¹,

Li²,

Zhang³

2023

Physicochem. Probl. Miner. Process.

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“…The findings of Zhu et al [24] indicate that reactive oily bubbles modified by an appropriate concentration and type of surfactant can help improve the flotation efficiency of low-rank coal. Zhou et al [25][26][27] reported that oily bubble flotation can effectively improve the flotation recovery of bastnaesite, apatite, dolomite, quartz, and collophane. Ramirez et al [28] also demonstrated the positive effect of oily bubbles on the flotation recovery of molybdenite under experimental circumstances.…”

Section: Introductionmentioning

confidence: 99%

Oily Bubble Flotation of Coal Macerals of Shendong Jurassic Coal

Qu,

Luo,

Zhu

et al. 2024

Minerals

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The comprehensive quality enhancement and grading of coal are crucial methods for unlocking the high value-added and low-carbon utilization of coal resources. In this work, the influence of oily bubbles on the flotation of Shendong Jurassic vitrinite-rich coal and inertinite-rich coal was studied via flotation tests, Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), contact angle detection, and induction time measurements. FT-IR and XPS analyses demonstrated that the surface of inertinite-rich coal contains more hydrophilic oxygen-containing functional groups. Contact angle and induction time measurements showed that the vitrinite-rich coal is more hydrophobic than inertinite-rich coal, and that for both air and oily bubbles, the induction time on the surface of vitrinite-rich coal is shorter than that on the surface of inertinite-rich coal. In addition, rather remarkably, the induction times for both vitrinite-rich coal and inertinite-rich coal are significantly reduced by oily bubbles. Finally, a better flotation performance for oily bubble flotation of vitrinite-rich coal and inertinite-rich coal was found. It appears that oily bubble flotation is an efficient method for enhancing the recovery of vitrinite-rich coal and inertinite-rich coal.

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“…However, their process requires slurry conditioning with reagents at high wt% solids (at least 70 wt%), use of guar gum as depressant and deionized water in addition to regular reagents such as soda ash, tall oil fatty acid and diesel and therefore the process may not be economically feasible. Liu et al (2017) found that saponified gutter oil fatty acid is an effective collector for reverse flotation of apatite from dolomite in collophaite ore. Zhou et al (2017) demonstrated in micro-flotation tests that use of reactive oily bubble can effectively enhance collophane flotation to produce superior separation performance. However, a practical and cost effective flotation approach has not been developed to increase the flotation recovery and reduce the flotation reagent consumption at the same time.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Effects of Nanobubbles on Phosphate Ore Flotation

Tao

Fan

et al. 2018

IJGE

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Phosphorous is vital for life, including plants, animals, and human beings and it is an essential component in agricultural fertilizers and phosphorous-based chemicals. Phosphate ores, mainly in the form of apatite and collophanite, are non-renewable natural resources of phosphorus. Froth flotation has been used in the phosphate industry for more than half a century as the primary technique for upgrading phosphate. Nevertheless, flotation does not produce satisfactory performance for phosphate beneficiation in many cases, especially for very fine and coarse phosphate particles. This study was performed with an aim to develop a nanobubble enhanced flotation process to enhance phosphate flotation efficiency. A specially designed flotation column featured with a nanobubble generator and a conventional bubble generator was employed to assess the effects of nanobubbles on the phosphate ore flotation performance under different operating conditions. Flotation process parameters investigated include feed flow rate, dosage of collector, dosage of frother, flotation time, etc. The flotation results have shown that use of nanobubbles increased P2O5 recovery by up to 30% for a given Acid Insoluble (A.I.) rejection, depending on phosphate concentrate grade. Nanobubbles reduced the collector and frother dosage by about 50% and also increased flotation kinetics. The improved flotation performance can be attributed to increased collection efficiency and surface hydrophobicity in the presence of nanobubbles.

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A study on novel reactive oily bubble technology enhanced collophane flotation

Cited by 10 publications

References 11 publications

DFT study of coadsorption of fatty acid and kerosene on fluorapatite (001) surface

DFT study of coadsorption of fatty acid and kerosene on fluorapatite (001) surface

Oily Bubble Flotation of Coal Macerals of Shendong Jurassic Coal

Investigation of Effects of Nanobubbles on Phosphate Ore Flotation

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