Studies on carbon flotation from fly ash ScienceDirect
#0183;#32;1. Introduction. It has been estimated that 750 million tons of coal fly ash is generated on a global basis annually, and the global fly ash utilization figure is estimated to be 25% .Carbon content in fly ash is within the range of %, .Fly ash is mainly used as a raw material for adsorbents, ceramics, glasses, geopolymers, concretes, etc.