Study of Influence Factors on Wettability of Coal Dust

Abstract:

In this study, coal samples of experimental come from the raw coal of Wangfenggang and Qidong. Sodium dodecyl benzene sulfonate (SDBS), sodium dodecyl sulfate (SDS), water-reducing admixture NF and Tween-80 are choosed as surfactants. The influence factors on wettability of coal dust were characterized by contact angle meter, fourier transform infrared spectroscopy (FTIR) and surface tension experiment. The research shows that the effect of solution on wettability of coal dust is mainly depended on the surface structure of coal dust, type and concentration of solution.

• Periodical: Advanced Materials Research (Volumes 724-725)
• Pages: 1050-1053
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.724-725.1050
• Online since: August 2013
• Authors: Yin Yu Sun, Rong Chun Nie, Lin Lin Zhang
• Keywords: Coal Dust, Contact Angle (CA), Surface Tension, Surfactant, Wetting

References

[1] Gay, Frank T and Cowsette, U.S. Patent 6,726,849. (2004)

[2] Pullen, Erroll M and Melvyn D, U.S. Patent 6,124,366. (2000).

[3] Wang C Y, Mei G M and Yang J G: Clean coal technology . Forum Vol. 15-17 (2005), p.11.(In Chinese)

[4] Xie X Z, Fu G: Coal Science and Technology. Forum Vol. 65-68 (2004), p.32.(In Chinese)

[5] He D H, Ma L and Liu J R: Petrochemical technology. Forum Vol. 315-322 (2008), p.37.(In Chinese)

[6] Cai X L, Dong X F and Lin W M: J Nat Gas Chem. Forum Vol. 122-126 (2006), p.15.(In Chinese)

[7] Cai X L, Dong X F and Lin W M: J Nat Gas Chem. Forum Vol. 31-36 (2007), p.16.(In Chinese)

[8] He J: Coal preparation technology. Forum Vol. 13-15 (2000), p.5.(In Chinese)