Study on the correlation between Fe/Ti forms and reaction activity high-alumina coal fly ash
文献类型：期刊论文
| 作者 | Yang, Chennian1,2; Zhang, Jianbo1; Hou, Xinjuan1,2; Li, Shaopeng1; Li, Huiquan1,2; Zhu, Ganyu1,2; Qi, Fang3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2021-10-20 |
| 卷号 | 792页码:7 |
| 关键词 | High-alumina coal fly ash Iron Titanium Sulfuric acid leaching Density functional theory |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2021.148419 |
| 英文摘要 | High-alumina coal fly ash (HAFA) is an important aluminum and silicon resource. In the process of preparing aluminum-silicon materials from HAFA, the influence of impurity elements on its performance must be considered. In this work, the occurrence state of impurities in HAFA, micro morphology, and the bond energy of different impurity coordination were studied. Sulfuric add leaching method and density functional theory were used to study the leaching behavior of impurities to verify the difficulty of removing different impurity elements. The results show that iron existed in the form of magnetic particles (34.78%), amorphous phase (49.24%), and crystalline phase (15.96%) in HAFA. Titanium mainly existed in amorphous phase (29.34%) and crystalline phase (69.4%). In sulfuric add leaching, titanium was more difficult to leach, and the content of TiO2 decreased from 2.30% to 225%, whereas that of Fe2O3 decreased from 1.50% to 0.86%. The actual leaching behavior of impurity elements was consistent with the simulation results, with more energy required to remove Ti than Fe. These studies of impurity elements in HAFA will provide theoretical support for the preparation of aluminum-silicon materials. (C) 2021 Elsevier B.V. An rights reserved. |
| WOS关键词 | INNER-MONGOLIA ; BOTTOM ASH ; EXTRACTION ; ACCURATE ; MULLITE ; PHASE ; GA ; AL |
| 资助项目 | National Nature Science Foundation of China[51804293] ; National Nature Science Foundation of China[U1810205] ; National Nature Science Foundation of China[51704272] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000689569200006 |
| 出版者 | ELSEVIER |
| 资助机构 | National Nature Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/50013]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Shaopeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100090, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Wuhan Univ Sci & Technol, Coll Resources & Environm Engn, State Environm Protect Key Lab Mineral Met Resour, Wuhan 430081, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Chennian,Zhang, Jianbo,Hou, Xinjuan,et al. Study on the correlation between Fe/Ti forms and reaction activity high-alumina coal fly ash[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,792:7. |
| APA | Yang, Chennian.,Zhang, Jianbo.,Hou, Xinjuan.,Li, Shaopeng.,Li, Huiquan.,...&Qi, Fang.(2021).Study on the correlation between Fe/Ti forms and reaction activity high-alumina coal fly ash.SCIENCE OF THE TOTAL ENVIRONMENT,792,7. |
| MLA | Yang, Chennian,et al."Study on the correlation between Fe/Ti forms and reaction activity high-alumina coal fly ash".SCIENCE OF THE TOTAL ENVIRONMENT 792(2021):7. |
入库方式： OAI收割
来源：过程工程研究所
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