Preparation of Al-Si composite from high-alumina coal fly ash by mechanical chemical synergistic activation
Zhang, Jianbo1,2; Li, Shaopeng1; Li, Huiquan1,2; Wu, Qisheng3; Xi, Xinguo3; Li, Zhanbing1
2017-06-01
发表期刊CERAMICS INTERNATIONAL
ISSN0272-8842
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
DOI10.1016/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
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
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
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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.
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