Effects of particle size and coating on decomposition of alumina-extracted residue from high-alumina fly ash
文献类型：期刊论文
| 作者 | Wang, Zehua1,2; Ma, Shuhua1; Tang, Zhenhua1; Wang, Xiaohui1; Zheng, Shili1 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2016-05-05 |
| 卷号 | 308期号:MAY页码:253-263 |
| 关键词 | Fly ash Alumina-extracted residue NaCaHSiO4 Particle size Coating |
| ISSN号 | 0304-3894 |
| 英文摘要 | The effective removal of alkali in the alumina-extracted reside (AER) obtained by extracting alumina from high-alumina fly ash is the premise for realizing the utilization of the silicon component in the fly ash. Sodium was removed from the AER by a decomposition reaction. The effects of the particle size and reactant coating on the decomposition reaction of AER were studied, and the results showed that by decreasing the particle size, the decomposition reaction rate of AER could be enhanced obviously and the Na2O content of the products could be decreased effectively. In addition, the process and mechanism of the decomposition reaction of AER and the reaction kinetics were investigated. The results revealed that the decomposition reaction of AER started from the outer surface of the AER particles. The reaction kinetics corresponded with shrinking unreacted core models. Furthermore, the decomposition reaction rate of AER could be enhanced obviously by decreasing the particle size because the effect of product layer diffusion was weakened when the particle size of AER was decreased. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Engineering, Environmental ; Engineering, Civil ; Environmental Sciences |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology |
| 关键词[WOS] | COAL ; NACAHSIO4 ; RECOVERY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000374803600031 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/21023]  |
| 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, Natl Engn Lab Hydromet Cleaner Prod, Key Lab Green Proc & Engn, Inst 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 | Wang, Zehua,Ma, Shuhua,Tang, Zhenhua,et al. Effects of particle size and coating on decomposition of alumina-extracted residue from high-alumina fly ash[J]. JOURNAL OF HAZARDOUS MATERIALS,2016,308(MAY):253-263. |
| APA | Wang, Zehua,Ma, Shuhua,Tang, Zhenhua,Wang, Xiaohui,&Zheng, Shili.(2016).Effects of particle size and coating on decomposition of alumina-extracted residue from high-alumina fly ash.JOURNAL OF HAZARDOUS MATERIALS,308(MAY),253-263. |
| MLA | Wang, Zehua,et al."Effects of particle size and coating on decomposition of alumina-extracted residue from high-alumina fly ash".JOURNAL OF HAZARDOUS MATERIALS 308.MAY(2016):253-263. |
入库方式： OAI收割
来源：过程工程研究所
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