Research progress of fly ash comprehensive utilization

Introduce the harm of fly ash stack and its comprehensive utilization at home and abroad from the aspects of environmental protection and sustainable development.The main methods of fly ash utilization are backfilling road,producing cement,concrete,flyash brick and new type wall materials,extracting high value-added minerals,making the soil more fertile.Based on the practical utilization status of fly ash at home and national policies,point out that building materials production,road backfill,high value-added minerals extraction are the utilization tendency of fly ash.