For high concentration disposal of fly ash slurry, a detailed investigation of
rheological behavior is required. The addition of a surfactant to slurry reduces surface
tension, thereby increasing its spreading and wetting properties of solid particles. Thus
the requirement of the amount of water, as well as energy during pipeline
transportation, is reduced. The present chapter describes in detail the generation of fly
ash from a thermal power plant and its stabilization for pipeline transportation. The
rheological behavior of fly ash samples is studied in the presence of some natural and
synthetic surfactants. A suitable rheological model is used to discuss the relationship
between various rheological parameters. The addition of a surfactant may reduce the
viscosity of the slurry. Moreover, the role of the surfactant of bottom ash as a viscosity
reducing agent is discussed. In addition, the mechanism of interaction between fly ash
particles and the surfactant has been discussed.
Keywords: Additive, Fly ash, Generation, Slurry stabilization, Slurry
transportation.
