Mechanism of mechanical-chemical synergistic activation for preparation of mullite ceramics from high-alumina coal fly ash
文献类型：期刊论文
| 作者 | Zhang, Jianbo1; Li, Huiquan1; Li, Shaopeng1; Hu, Pengpeng1; Wu, Wenfen1; Wu, Qisheng2; Xi, Xinguo2 |
| 刊名 | CERAMICS INTERNATIONAL
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 44期号:4页码:3884-3892 |
| 关键词 | Hafa Al-si Series Ceramics Synergistic Activation Amorphous Silicate Reactivity Desilication Al/si Mass Ratio |
| ISSN号 | 0272-8842 |
| DOI | 10.1016/j.ceramint.2017.11.178 |
| 文献子类 | Article |
| 英文摘要 | High-alumina coal fly ash (HAFA) is a special solid waste due to the existence of more than 45% alumina and 35% silica, which can be applied to prepare Al-Si series ceramics if the impurities can be removed and the Al/Si mass ratio can exceed 2.55 (Mullite: 3Al(2)O(3).2SiO(2)). In this work, a new mechanical chemical synergistic activation desilication process is proposed, and 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. Especially, the mechanism of this process is investigated in detail. The analysis of the mechanism shows that the decrease of Q(4)(3Al) and the increase of Q(4)(0Al), Q(4)(1Al), and Q(4)(2Al) improve amorphous silicate reactivity through synergistic activation, and the exposed amorphous Si-O-/Si-O-Si can be removed by OH-during the desilication process (desilicated ratio > 55%), which help the fine mullite to exhibit excellent properties (bulk density > 2.85 g/cm(3), apparent porosity < 0.5%) during the sintering process. Finally, this process not only decreases the pollution but also alleviates the shortage of Al/Si resources and promotes the clean development of coal-fired power generation. |
| WOS关键词 | ALKALINE ACTIVATION ; POWER-PLANT ; GLASS ; COMPOSITE |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000424716200049 |
| 资助机构 | Science and Technology Planning Project of Inner Mongolia Autonomous Region(201501059) ; Shanxi Province Coal Based Low-carbon Technology Major Projects(MC2016-05) ; 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) |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/24039]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100090, Peoples R China 2.Yancheng Inst Technol, Yancheng 224051, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Jianbo,Li, Huiquan,Li, Shaopeng,et al. Mechanism of mechanical-chemical synergistic activation for preparation of mullite ceramics from high-alumina coal fly ash[J]. CERAMICS INTERNATIONAL,2018,44(4):3884-3892. |
| APA | Zhang, Jianbo.,Li, Huiquan.,Li, Shaopeng.,Hu, Pengpeng.,Wu, Wenfen.,...&Xi, Xinguo.(2018).Mechanism of mechanical-chemical synergistic activation for preparation of mullite ceramics from high-alumina coal fly ash.CERAMICS INTERNATIONAL,44(4),3884-3892. |
| MLA | Zhang, Jianbo,et al."Mechanism of mechanical-chemical synergistic activation for preparation of mullite ceramics from high-alumina coal fly ash".CERAMICS INTERNATIONAL 44.4(2018):3884-3892. |
入库方式： OAI收割
来源：过程工程研究所
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