Microstructures and thermal properties of municipal solid waste incineration fly ash

被引：0
|
作者：
刘元元 [1 ]
王佳佳 [1 ]
林祥 [2 ]
王里奥 [2 ]
钟山 [3 ]
杨威 [2 ]
机构：
[1] Key Laboratory of The Three Gorges Reservoir Region's Eco-environmental of Ministry of Education,Chongqing University
[2] College of Resources and Environmental Science,Chongqing University
[3] College of Environment and Resources,Guangxi Normal University
来源：
Journal of Central South University | 2012年 / 19卷 / 03期
基金：
中国国家自然科学基金;
关键词：
municipal solid waste incineration; fly ash; thermal treatment; sintering; microstructure;
D O I：
暂无
中图分类号：
X513 [粒状污染物];
学科分类号：
0706 ; 070602 ;
摘要：
To analyze the feasibility of utilization of thermal technology in fly ash treatment,thermal properties and microstructures of municipal solid waste incineration(MSWI) fly ash were studied by measuring the chemical element composition,specific surface area,pore sizes,functional groups,TEM image,mineralogy and DSC-TG curves of raw and sintered fly ash specimens.The results show that MSWI fly ash particles mostly have irregular shapes and non-typical pore structure,and the supersonic treatment improves the pore structure;MSWI fly ash consists of such crystals as SiO2,CaSO4 and silica-aluminates,and some soluble salts like KCl and NaCl.During the sintering process,mineralogy changes largely and novel solid solutions are produced gradually with the rise of temperature.Therefore,the utilization of a proper thermal technology not only destructs those persistent organic toxicants but also stabilizes hazardous heavy metals in MSWI fly ash.
引用
收藏
页码：855 / 862
页数：8
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