粉煤灰综合利用研究进展

从环境保护和可持续发展角度,介绍了粉煤灰堆存的危害和国内外粉煤灰综合利用概况。分别从粉煤灰筑路回填,生产不同粉煤灰掺量的水泥、混凝土、粉煤灰砖、新型墙体材料等建筑材料,高附加值矿物提取、废气废水治理及农业等方面的应用情况出发,综述了国内外粉煤灰综合利用的研究现状和进展。并针对中国粉煤灰综合利用存在的问题和国家政策导向,提出了中国粉煤灰综合利用应在现有基础上积极推广粉煤灰利废建材生产、推广采用粉煤灰筑路等建筑工程技术、推进高附加值矿物提取技术产业化等技术发展趋势。 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