1. Features
Particle composition of fly ash. According to the morphology of fly ash particles, fly ash particles can be divided into: glass microbeads; sponge-like vitreous body (including smaller, denser, smaller-porous vitreous body and larger, loose and porous vitreous body); carbon particles . The content of microbeads in the fly ash discharged from power plants in my country is not high, most of which are spongy glass bodies, and the particle distribution is extremely uneven. Through grinding treatment, the morphology and structure of the original fly ash is destroyed, making it a broken polyhedron with a relatively uniform particle size, and its specific surface area is increased, thereby increasing its surface activity and improving its performance difference.
2. Use
Fly ash can be used as an admixture of cement, mortar and concrete, and become a component of cement and concrete. Fly ash can be used as a raw material to replace clay to produce cement clinker, manufacture sintered bricks, autoclaved aerated concrete, foam Concrete, hollow brick laying, sintered or non-sintered ceramsite, paving roads; building dams, building ports, backfilling of farmland potholes and lowlands, coal mine subsidence areas and mines; it can also be used for sorting drift beads, microbeads, iron concentrates Powder, carbon, aluminum and other useful substances, among which float beads and microbeads can be used as insulation materials, refractory materials, plastics, and rubber fillers respectively.
