Abstract
The recent increase in interests on the coal utilization technology has brought about the various research of coal slurry preparation, transportation and combustion. In this article, the recent developments for the measurements of physical properties of Coal-Water mixture (CWM) will be reviewed. The physical properties means viscosity, thermal conductivity, specific heat, density and zeta potential of CWM. Stability of coal slurries will be discussed comparing with the thixotropic characteristics.
It is necessary to predict relationships between pressure drop and CWM flow rate in the design of pipeline transportation systems based on the experimental results in a laboratory. Flow characteristic data obtained from pilot-plant experiments are compared with the rheometrical data. The comparison indicates that laboratory rheometry data enable us to design pipeline transportation. The correlation of heat transfer data for CWM in a laminar tube flow will be also discussed.
