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摘要:
粉煤灰是煤炭燃烧后产生的一种固体废弃物，经长期大量堆积，占用大量土地资源且造成了严重的环境污染问题，粉煤灰资源综合利用越发至关重要。论文介绍了我国粉煤灰的物化性质及其分类，详细总结了我国粉煤灰有用组分回收和高附加值应用的方法及研究现状，简要叙述了粉煤灰在建筑工程、农业和环境保护领域的应用现状，分析了我国粉煤灰资源化利用存在的问题，并对其了发展前景进行了展望。
Abstract:Fly ash is a kind of solid waste produced after coal combustion. After a long period of accumulation, it takes up a lot of land resources and causes serious environmental pollution problems. The comprehensive utilization of fly ash resources is becoming more and more important. The paper introduces the physicochemical properties and classification of fly ash in China, summarizes in detail the methods and research status of the recovery and high value-added application of useful components of fly ash in China. And briefly describes the current status of the application of fly ash in the fields of construction engineering, agriculture and environmental protection, accurately analyzes the problems in the utilization of fly ash in China, and prospects its development prospect. It has promoted the rapid development of efficient and comprehensive utilization of fly ash in China and promoted the sustainable development of mineral resources.
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Key words:
- fly ash /
- solid waste /
- comprehensive utilization
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表 1 粉煤灰主要氧化物含量范围
Table 1. Main oxide content range of fly ash
Main ingredient SiO2 Al2O3 Fe2O3 CaO MgO K2O Ignition loss content 15%~60% 22%~65% 4%~40% 1%~40% 0.7%~1.9% 0.7%~2.9% 0.7%~30% 
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