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 | |
Source Publication | CERAMICS INTERNATIONAL
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ISSN | 0272-8842 |
Volume | 43Issue:8Pages:6532-6541 |
Abstract | 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. |
Keyword | Hafa Al-si Series Ceramics Synergistic Activation Al/si Mass Ratio Bulk Density Apparent Porosity |
Subtype | Article |
WOS Headings | Science & Technology ; Technology |
DOI | 10.1016/j.ceramint.2017.02.075 |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | Mullite Ceramics ; Power-plant ; Glass ; Bauxite |
WOS Research Area | Materials Science |
WOS Subject | Materials Science, Ceramics |
Funding Organization | National Nature Science Foundation of China(51304184) ; National Basic Research Program ( |
WOS ID | WOS:000401401500095 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/22643 |
Collection | 湿法冶金清洁生产技术国家工程实验室 |
Affiliation | 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 |
Recommended Citation 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. |
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Preparation of Al-Si(2060KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
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