Kinetics of decomposition of mullite and corundum in coal fly ash under highly alkaline condition
文献类型：期刊论文
| 作者 | Liu, Chun-li1,2; Ma, Shu-hua1; Ding, Jian1; Lu, Yang1,2; Zheng, Shi-li1; Zhang, Yi1 |
| 刊名 | TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 29期号:4页码:868-875 |
| 关键词 | coal fly ash mullite corundum decomposition kinetics alumina |
| ISSN号 | 1003-6326 |
| DOI | 10.1016/S1003-6326(19)64997-6 |
| 英文摘要 | Decomposition kinetics of mullite and corundum in coal fly ash with highly alkaline solution was studied. The effects of the reaction temperature and reaction time on decomposition rates of mullite and corundum and alumina extraction efficiency were investigated. The results show that increasing reaction temperature and reaction time increases the decomposition rates of mullite and corundum and alumina extraction efficiency, with the decomposition temperature of mullite lower than that of corundum. After 90 min reaction at 220 degrees C, more than 100 g alumina was extracted when recycling 1 L of alkaline solution. The decomposition processes of mullite and corundum corresponded with the shrinking unreacted core model, and the reaction rate was under chemical reaction control, with the activation energies of mullite and corundum being 67.46 and 161.82 kJ/mol, respectively. |
| WOS关键词 | EXTRACTING ALUMINA ; HEAVY-METALS ; SULFATE ; ACID ; TRANSFORMATION ; TEMPERATURE ; DIFFRACTION ; RECOVERY ; SODALITE ; SOIL |
| 资助项目 | National Basic Research Program of China[2013CB632601] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000467090500021 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Basic Research Program of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28259]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Ma, Shu-hua |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Chun-li,Ma, Shu-hua,Ding, Jian,et al. Kinetics of decomposition of mullite and corundum in coal fly ash under highly alkaline condition[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2019,29(4):868-875. |
| APA | Liu, Chun-li,Ma, Shu-hua,Ding, Jian,Lu, Yang,Zheng, Shi-li,&Zhang, Yi.(2019).Kinetics of decomposition of mullite and corundum in coal fly ash under highly alkaline condition.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,29(4),868-875. |
| MLA | Liu, Chun-li,et al."Kinetics of decomposition of mullite and corundum in coal fly ash under highly alkaline condition".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 29.4(2019):868-875. |
入库方式： OAI收割
来源：过程工程研究所
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