Coal ash is a byproduct of coal gasification processes, which shows great reusing potential in construction, adsorption, extraction of alumina and other areas. The flow characteristics of fine ash have a significant effect on reusing processes. However, ashes produced by different gasification technologies have different physical properties. Therefore, research on flow characteristics of fine ash is useful. In this work, fine ashes obtained from coal-water slurry gasification and different pulverized coal g...