Effect of Zeta-Potential of Particles on the Flow and Stability of CWM

The effect of the zeta-potential of coal particles on the viscosity and stability of 40 wt % coal-water slurries is investigated, and the factors controlling the zeta-potential of coal particles are also examined. It is found that the zeta-potential of particles is affected by the inorganic salts di...

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Published inKAGAKU KOGAKU RONBUNSHU Vol. 12; no. 5; pp. 557 - 562
Main Authors Higashitani, Ko, Kage, Akiko, Kurita, Naoaki
Format Journal Article
LanguageJapanese
English
Published The Society of Chemical Engineers, Japan 1986
Subjects
Coal Slurry
Colloidal Particles
CWM
Energy
Rheology
Suspension
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Summary:The effect of the zeta-potential of coal particles on the viscosity and stability of 40 wt % coal-water slurries is investigated, and the factors controlling the zeta-potential of coal particles are also examined. It is found that the zeta-potential of particles is affected by the inorganic salts dissolved from the coal ash into the medium, the pH of the medium and the additives adsorbed on the particle surface, and that the viscosity and stability of slurries are governed by the zeta-potential when |ζ| <40 mV. Whether cationic polymers of low molecular weight may be used as the additive of CWM slurries is also examined.
ISSN:0386-216X
1349-9203
DOI:10.1252/kakoronbunshu.12.557