The effect of slurry concentration on coal pitch water slurry rheological properties

Coal pitch water slurry (CPWS), which was a new concept presented by the author, was prepared by adding coal pitch powder into the solutions of dispersant at high stirring rate. The particle size distribution of coal pitch powder followed the Alfred particle size distribution. The effect of slurry concentration with different amount of dispersants on rheological properties of CPWS was investigated in this paper. The results showed that the apparent viscosity of different concentration of CPWS decreased with the increase of shear rate and indicated that CPWS is a kind of pseudo-plastic liquid. At the same shear rate, apparent viscosity increased with the increase of CPWS concentration.