Formulation design of microemulsion collector based on gemini surfactant in coal flotation

Zhu, Xianchang; He, Meng; Zhang, Wei; Wei, Hengbin; Lyu, Xianjun; Wang, Qingbiao; You, Xiaofang; Li, Lin

doi:10.1016/j.jclepro.2020.120496

Cited by 37 publications

(5 citation statements)

References 39 publications

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“…It was observed that the microemulsion had a better collection capacity. 144 Elimination of sylvite from halite for potash ore was scrutinized using a novel Gemini surfactant, N , N ′-bis (octadecyl dimethyl)-1,4-butane diammonium dibromide (BOBD) using froth flotation. The activity of this type of surfactant was contrasted with the acquired outcomes using a conventional monomeric surface-active agent, octadecyl amine hydrochloride (OAH).…”

Section: Types Of Surfactantsmentioning

confidence: 99%

Various surface-active agents used in flotation technology for the removal of noxious pollutants from wastewater: a critical review

Pooja¹,

Kumar²

2023

Environ. Sci.: Water Res. Technol.

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Section: Types Of Surfactantsmentioning

confidence: 99%

Various surface-active agents used in flotation technology for the removal of noxious pollutants from wastewater: a critical review

Pooja¹,

Kumar²

2023

Environ. Sci.: Water Res. Technol.

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“…[11] Froth flotation is a widely adopted physicochemical process for separating hydrophobic particles from the hydrophilic gangue. [12,13] In flotation, process promoters are used to impart hydrophobicity to the carbonaceous particle. [14] These particles get attached to the bubble during aeration and float to the top of the floatation cell.…”

Section: Introductionmentioning

confidence: 99%

Flotation response of coal washery reject fines: Characteristics, process optimization, and oxidation

et al. 2023

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The present paper outlines the characterization, electrokinetic behaviour, and flotation response of rejected coking coal fines with 32.5% ash generated in a coal washery in Eastern India. The response methodology and central composite rotatable design (RSM-CCRD) were used for the process modelling and optimization of the flotation process using diesel, methyl isobutyl carbinol (MIBC), and sodium hexametaphosphate as a collector, frother, and depressant to maximize ash reduction, yield, and combustible recovery. At optimum condition, a 9.7% clean ash coal was achieved with a 63% yield at collector, frother, and depressant dosages of 0.78, 0.31, and 0.80 kg/ton, respectively. The model prediction and experimental data corroborated sufficiently. Subsequently, within 1 year, the fines oxidized and did not float with the collector. Fourier-transform infrared spectroscopy (FTIR) confirmed surface oxidation on oxidized coal. The oxidized coal responded favourably to acid oil, a vegetable oil refinery waste. With acid oil as a collector, the oxidized coal can upgrade to 12% clean ash coal with a 60% yield; the combustible recovered is 80%. The work indicates successful upgradation of fresh and oxidized coal using the froth flotation process.

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“…They revealed that presence of 2-ethylhexanol, particularly in a mixture with diesel oil, could enhance flotation performance by increasing recovery of combustible matter and flotation efficiency index from 43.42% and 29.52% up to 89.27% and 59.91%, respectively. Several researchers applied a quite a mixed variety of polymeric and surface active reagents, either discretely or in mixed composition, for coal flotation such as dodecane (Wang et al, 2019;Zhang et al, 2020), gemini surfactant (Zhu et al, 2020), non-ionic surfactant triton X-100 (Zheng et al, 2021a,b), anionic polyacrylamide , polyvinylpyrrolidone (Wang et al, 2021), dodecyl ethoxyl ethers (Li et al, 2019), and polystyrene (Liao et al, 2021). Diverse parameters such as the number of ethoxyl functional group in their structure, the length of hydrocarbon chain and their consumption dosage affect the regent performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of an acetonized pyrolysis oil recycled from spent-car tires on coal flotation performance

Hassanzadeh¹

2023

Physicochem. Probl. Miner. Process.

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In this paper, an extended Historical Data (HD) design was applied for evaluating the effect of an acetonized pyrolysis oil (PO) produced by pyrolysis of spent-car tires in coal. Experimental and statistical analyses were applied for examining the influence of some operating variables such as concentration of diesel oil (0, 10, and 20 L/t), pine oil (0.55, 0.1, and 1 L/t), and the pyrolysis oil (0, 10, and 20 L/t) as well as solid content of pulp (5, 10, and 15% (w/w)) on the yield and ash content of final concentrate. Fourier Transform Infrared Spectroscopy (FTIR) measurements showed that PO contained hydroxyl, aldehyde, aliphatic, and aromatic compounds. Based on the results of Analysis of Variance (ANOVA), the main effect of all variables, except concentration of pine oil, on the flotation responses were found significant. Batch flotation experimental results indicated that using pyrolysis oil resulted in a 2% increase in ash content and a 35% decrease of the yield, through a nonlinear trend. The curved behavior of flotation measures was due to the possible competitive adsorption between PO and diesel oil and nonselective interaction between pyrolysis oil and other reagents. The negative effect of PO on coal flotation efficiency was also ascribed to the interaction between hydrophilic groups in PO structure and the oxide nature of non-combustible materials of coal particles.

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Formulation design of microemulsion collector based on gemini surfactant in coal flotation

Cited by 37 publications

References 39 publications

Various surface-active agents used in flotation technology for the removal of noxious pollutants from wastewater: a critical review

Various surface-active agents used in flotation technology for the removal of noxious pollutants from wastewater: a critical review

Flotation response of coal washery reject fines: Characteristics, process optimization, and oxidation

Effect of an acetonized pyrolysis oil recycled from spent-car tires on coal flotation performance

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