Sedimentation Stability and Rheology of Coal Water Slurries

Abstract

Sedimentation of coal particles should be avoided during the transportation of coal water mixtures (CWMs) by sea in tankers. The sedimentation of coal particles under shear flow plays an important role in the stability of CWMs. It is important to understand how the theological characteristics of CWMs are related to the sedimentation stability. In this study, the stability of CWMs prepared with and without a stabilizer was evaluated using test equipment developed at Yamaguchi University. The Theological measurements of CWMs were also conducted, and the results obtained were correlated with the sedimentation stability of CWMs.