Several Australian low rank coal were upgraded by hydrothermal treatment process at 200℃-300℃. As the heat-treatment temperature (HTT) was raised, the slurriability of CWM which was prepared from treated coal was improved dramatically. By the DSC measurement, the amount of bound water in CWM decreased with increasing of HTT. From these results, we found that the amount of the bound water was in good agreement with the slurriability of CWM.
