Effect of Mineral Matter and Flame Characteristics on the Size of Fly-Ash Produced from Pulverized Fuel Combustion

摘要

The particle size distribution of the fly-ash and the amount of mineral matter vaporized appear to depend on the original chemical and physical structure of the mineral matter in the coal as well as the flame conditions. The present knowledge of how these affect formation of fly-ash is reviewed, the physical distribution of mineral matter defined in a way more meaningful for combustion studies, and the extent of incomplete cenosphere formation discussed in light of data recently obtained in our laboratory. Unfortunately, a great deal more work is needed before even a qualitative mechanism of fly-ash formation can be accepted. (ERA citation 04:056012)