| Effect of Temperature on Phase and Alumina Extraction Efficiency of the Product from Sintering Coal Fly Ash with Ammonium Sulfate | |
| Alternative Title | Effect of Temperature on Phase and Alumina Extraction Efficiency of the Product from Sintering Coal Fly Ash with Ammonium Sulfate |
| Wu Yusheng; Xu Ping; Chen Jiao; Li Laishi; Li Mingchun | |
| 2014 | |
| Source Publication | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| ISSN | 1004-9541 |
| Volume | 22Issue:11-12Pages:1363-1367 |
| Abstract | A new developed technology for extracting alumina from coal fly ash was studied in this paper. In this technology, coal fly ash is first sintered with ammonium sulfate, forming ammonium aluminum sulfate in the resultant product, where alumina can be easily leached without using any strong acid or alkali. The products obtained under different sintering conditions were characterized by X-ray diffractometry. Alumina extraction efficiency of these products was also investigated. The results show that the sintering temperature and time substantially influence the phase composition and alumina extraction efficiency of sintered products, while the heating rate has little influence. The optimal sintering condition is 400 degrees C for 3 h in air with a heating rate of 6 degrees C.min(-1). Under the optimal sintering condition, the alumina extraction efficiency from as-sintered coal fly ash can reach 85% or more. (C) 2014 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved. |
| Other Abstract | A new developed technology for extracting alumina from coal fly ash was studied in this paper. In this technology, coal fly ash is first sintered with ammonium sulfate, forming ammonium aluminum sulfate in the resultant product, where alumina can be easily leached without using any strong acid or alkali. The products obtained under different sintering conditions were characterized by X-ray diffractometry. Alumina extraction efficiency of these products was also investigated. The results show that the sintering temperature and time substantially influence the phase composition and alumina extraction efficiency of sintered products, while the heating rate has little influence. The optimal sintering condition is 400 °C for 3 h in air with a heating rate of 6 °C·min~(–1).Under the optimal sintering condition, the alumina extraction efficiency from as-sintered coal fly ash can reach 85% or more. |
| Keyword | WASTE-WATER Coal fly ash Ammonium sulfate Sintering temperature Phase Alumina extraction efficiency |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [Special Project for High-end CNC Machine Tools and Basic Manufacturing Equipment of China] ; [Liaoning Excellent Talents in University] ; [National Natural Science Foundation of China] |
| CSCD ID | CSCD:5313976 |
| Citation statistics |
Cited Times:6[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/149939 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Wu Yusheng,Xu Ping,Chen Jiao,et al. Effect of Temperature on Phase and Alumina Extraction Efficiency of the Product from Sintering Coal Fly Ash with Ammonium Sulfate[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2014,22(11-12):1363-1367. |
| APA | Wu Yusheng,Xu Ping,Chen Jiao,Li Laishi,&Li Mingchun.(2014).Effect of Temperature on Phase and Alumina Extraction Efficiency of the Product from Sintering Coal Fly Ash with Ammonium Sulfate.CHINESE JOURNAL OF CHEMICAL ENGINEERING,22(11-12),1363-1367. |
| MLA | Wu Yusheng,et al."Effect of Temperature on Phase and Alumina Extraction Efficiency of the Product from Sintering Coal Fly Ash with Ammonium Sulfate".CHINESE JOURNAL OF CHEMICAL ENGINEERING 22.11-12(2014):1363-1367. |
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