Actions of wetting agents on coal dust

Glanville, James O.; Wightman, J. P.

doi:10.1016/0016-2361(79)90189-3

Cited by 33 publications

(5 citation statements)

References 11 publications

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“…Other variations of this technique have also been used. Some investigators 32, 33, and 34) reported the time for wetting a given amount of powder, whereas others have reported wetting rates 35) . Also there are differences in the manner in which time of wetting was measured.…”

Section: Immersion/sink Timementioning

confidence: 99%

Characterization of the Wetting and Dewetting Behavior of Powders

Chander

Hogg

Fuerstenau³

2007

KONA

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Section: Immersion/sink Timementioning

confidence: 99%

Characterization of the Wetting and Dewetting Behavior of Powders

Chander

Hogg

Fuerstenau³

2007

KONA

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“…Dewatering of coal (53)(54)(55)(56)(57)(58)(59). The use of surfactants reduces the surface tension and the water content of coal fines and controls coal dust.…”

Section: New Applicationsmentioning

confidence: 99%

Update on surfactants: What do we have to work with?

Bluestein¹,

Cowell²,

Mausner³

1981

J Americ Oil Chem Soc

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“…Wetting agents could enhance the hydrophilicity of coal dust by decreasing the surface tension of liquids [12,13]. Glanville et al found that the surfactant concentration, granularity of coal dust, temperature, and area of the wetting surface have a great influence on the rate of surface wetting [14][15][16]. Osasere Orumwense concluded that the electrolyte coagulants and flocculants modified the coal surface properties through physical interaction.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study on the Wettability of Two Coal Samples during Deep Burial Metamorphism

Yan

Bai

Feng

et al. 2020

Journal of Chemistry

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In order to investigate the effect of deep burial metamorphism on the wettability of coal during deep burial metamorphism, a superficial coal sample (∼90 m) and a deep coal sample (∼490 m) collected from two main mining seams were selected to simulate the deep burial metamorphism process. The wettability of two coal samples during deep burial metamorphism was investigated by X-ray photoelectron spectroscopy (XPS), FTIR, zeta potential, and contact angle measurements. Besides, comprehensive DLVO interaction analyses between two coal samples from different mining depths were carried out through the zeta potentials measurements under different pH values. The XPS results demonstrate that the content of surface oxygen atom and oxygen-containing functional group for superficial coal tends to be higher than that of deep coal. The FTIR results indicate that the peak intensity of oxygen-containing functional groups for the superficial is higher than that of deep coal, implying the stronger surface hydrophobicity of deep coal compared to superficial coal. The contact angle of superficial coal is lower than that of deep coal. The zeta potential and DLVO theory analyses of superficial particles and deep coal particles indicate that deep burial metamorphism process might be favorable for bubble-particle collision and attachment, while might be unfavorable for the wetting process oppositely. Based on the surface chemistry characterization and theory analyses, this study is expected to give a theoretical insight into the efficient processing or dedusting process of coals experiencing different deep burial metamorphism processes in the future.

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Actions of wetting agents on coal dust

Cited by 33 publications

References 11 publications

Characterization of the Wetting and Dewetting Behavior of Powders

Characterization of the Wetting and Dewetting Behavior of Powders

Update on surfactants: What do we have to work with?

A Comparative Study on the Wettability of Two Coal Samples during Deep Burial Metamorphism

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