The Effect of Water-Glycerol Mixtures on Rheological Properties of Coal Slurries

The rheological behavior of slurries of coal at different stages of metamorphism has been studied as depending on glycerol content in an aqueous dispersion medium. Increased viscosity and reduced polarity of water-glycerol solutions have been found to increase the shear stress and viscosity of coal slurries. The effective viscosity of the slurries has been revealed to decline at the same weight content of the dispersed phase with a rise in the stage of coal metamorphism (i.e., when passing from brown coal to anthracite).