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Effect of Temperature on Phase and Alumina Extraction Efficiency of the Product from Sintering Coal Fly Ash with Ammonium Sulfate
Alternative TitleEffect 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 PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume22Issue:11-12Pages:1363-1367
AbstractA 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 AbstractA 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.
KeywordWASTE-WATER Coal fly ash Ammonium sulfate Sintering temperature Phase Alumina extraction efficiency
Indexed ByCSCD
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 IDCSCD:5313976
Citation statistics
Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/149941
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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