Preparation of Al-Si composite from high-alumina coal fly ash by mechanical chemical synergistic activation

doi:10.1016/j.ceramint.2017.02.075

	Preparation of Al-Si composite from high-alumina coal fly ash by mechanical chemical synergistic activation
	Zhang, Jianbo 1,2; Li, Shaopeng 1; Li, Huiquan 1,2; Wu, Qisheng 3; Xi, Xinguo 3; Li, Zhanbing 1
	2017-06-01
发表期刊	CERAMICS INTERNATIONAL
ISSN	0272-8842
卷号	43 期号:8 页码:6532-6541
摘要	High-alumina coal fly ash (HAFA) is a special solid waste because it contains more than 45% alumina and 35% silica. This material can be applied to prepare Al Si series ceramics if the impurities can be removed and the Al/Si mass ratio can be elevated to a high level. In this work, a new mechanical chemical synergistic activation desilication process is proposed and optimized. During the synergistic activation, the morphology, ironic leaching ratios, efficient desilicated ratio (EDR), and mineral phases of different treatments are investigated. The reactivity of amorphous silica can be elevated to a high level (EDR > 11%). After the desilication process, the contents of different impurities can be lowered up to less than 1%, and the Al/Si mass ratio can be elevated from 1.26 to 2.71. Mullite refractories are prepared from desilicated HAFA by forming and sintering process, and the bulk density and apparent porosity can reach to 2.85 g/cm(3) and 2.07%, respectively.
关键词	Hafa Al-si Series Ceramics Synergistic Activation Al/si Mass Ratio Bulk Density Apparent Porosity
文章类型	Article
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.ceramint.2017.02.075
收录类别	SCI
语种	英语
关键词[WOS]	MULLITE CERAMICS ; POWER-PLANT ; GLASS ; BAUXITE
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
项目资助者	National Nature Science Foundation of China(51304184) ; National Basic Research Program ("973" Program) of China(2013CB632605) ; Jiangsu Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments/Yancheng Institute of Technology/Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province(YCXT201612)
WOS记录号	WOS:000401401500095
引用统计
文献类型	期刊论文
条目标识符	http://ir.ipe.ac.cn/handle/122111/22643
专题	湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Aademy Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100090, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yancheng Inst Technol, Yancheng 224051, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jianbo,Li, Shaopeng,Li, Huiquan,et al. Preparation of Al-Si composite from high-alumina coal fly ash by mechanical chemical synergistic activation[J]. CERAMICS INTERNATIONAL,2017,43(8):6532-6541.
APA	Zhang, Jianbo,Li, Shaopeng,Li, Huiquan,Wu, Qisheng,Xi, Xinguo,&Li, Zhanbing.(2017).Preparation of Al-Si composite from high-alumina coal fly ash by mechanical chemical synergistic activation.CERAMICS INTERNATIONAL,43(8),6532-6541.
MLA	Zhang, Jianbo,et al."Preparation of Al-Si composite from high-alumina coal fly ash by mechanical chemical synergistic activation".CERAMICS INTERNATIONAL 43.8(2017):6532-6541.