Study of Interaction Features Between Different CWS Dispersants and Coals——Effect of Dispersant Dosage on CWS Rheological Behavior(IV)

Influence of dispersant dosage on CWS rheological behavior was studied using 6 Chinese coals and 6 dispersants. The results show that the dispersant and its dosage not only influence the apparent viscosity but also the rheological behavior of CWS. Surplus or scanty dispersant dosage will increase the apparent viscosity of CWS. But the optimal dosage is different for different dispersants mainly because their structures, properties, and interaction characteristic between coal particles and dispersants are different. The usage of dispersant has much to do with the extent of dispersant-modified property of coal particles. The type of dispersant mainly influence the surface structure characteristic of coal particle.