摘要
粉煤灰是煤粉经高温燃烧后形成的一种似火山灰质混合材料。广义的粉煤灰包括飞灰和炉渣。中国1995年粉煤灰排放量达1.25亿t,2000年约为1.5亿t,2009年粉煤灰排放量约3.75亿t。如何使用好累积下来的二次能源,减少占地面积,减少环境污染,创造更高附加值,综合利用粉煤灰越来越受到人们的关注。介绍了粉煤灰的物化性质和在建筑、建材工业、农业、化学工业等方面的综合利用,对粉煤灰的发展趋势提出了建议,注重精细化、高效益的粉煤灰利用。
Burning pulverized coal under high temperature will get pulverized fuel ash,which is a mixture and is similar to cinerite.Generalized pulverized fuel ash contains fly ash and slag.In China the pulverized coal ash emissions reached up to 0.125 billion tons in 1995,approximately 0.15 billion tons in 2000,0.375 billion tons in 2009.How to use this secondary energy source which is accumulated year in and year out,save more floor space,reduce environmental pollution,create higher added value profit,on which has been gradually placed a high value.Introduce the physical and chemical properties of pulverized coal ash and its comprehensive utilization in construction,building materials industry,agriculture,chemical industry.Analyze the development tendency of pulverized fuel ash,emphasize that refined and high benefit utilization technology is needed.
出处
《洁净煤技术》
CAS
2012年第2期102-104,共3页
Clean Coal Technology
关键词
燃煤发电
粉煤灰
循环利用
环境污染
coal-fired electricity generation
pulverized coal ash
cyclic utilization
environmental pollution
