Effect of Temperature on Phase and Alumina Extraction Efficiency of the Product from Sintering Coal Fly Ash with Ammonium Sulfate

IMR OpenIR

	Effect of Temperature on Phase and Alumina Extraction Efficiency of the Product from Sintering Coal Fly Ash with Ammonium Sulfate
其他题名	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
发表期刊	CHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN	1004-9541
卷号	22 期号:11-12 页码:1363-1367
摘要	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.
其他摘要	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.
关键词	WASTE-WATER Coal fly ash Ammonium sulfate Sintering temperature Phase Alumina extraction efficiency
收录类别	CSCD
语种	英语
资助项目	[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记录号	CSCD:5313976
引用统计	被引频次：8[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/149939
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 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.