Calcium sulfate whisker prepared by flue gas desulfurization gypsum: A physical-chemical coupling production process

doi:10.1016/j.cjche.2020.05.021

	Calcium sulfate whisker prepared by flue gas desulfurization gypsum: A physical-chemical coupling production process
	Gao, Jing 2; Li, Qiang 2; Liu, Fuli 1,3
刊名	CHINESE JOURNAL OF CHEMICAL ENGINEERING
	2020-08-01
卷号	28 期号:8 页码:2221-2226
关键词	Flue gas desulfurization gypsum Calcium sulfate whiskers Crystallization kinetic Physical-chemical coupling
ISSN号	1004-9541
DOI	10.1016/j.cjche.2020.05.021
英文摘要	In this paper, the solid waste desulfurization gypsum produced by coal-fired power plants was used as a raw material to prepare calcium sulfate whiskers with high application prospects. Calcium sulfate whiskers with uniform morphology and high aspect ratio can be prepared by hydrothermal method in sulfuric acid solution. A new process of desulfurization gypsum activated by high-energy grinding to reduce the reaction temperature and sulfuric acid concentration was developed. Through the comparison of product morphology, the best grinding time was determined to be 3.5 h. The mechanism of desulfurization gypsum through physical-chemical coupling to reduce energy consumption was clarified. The activation of desulfurization gypsum by grinding and the acidic environment provided by the sulfuric acid solution made the calcium sulfate solution reached rapid saturation and accelerated the nucleation rate. By calculating the conversion and crystallization rate of calcium sulfate whiskers, it was found that there were obvious "autocatalytic" kinetic characteristics during the crystallization process. (C) 2020 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
资助项目	State Key Laboratory of Mineral Processing Science and Technology Open Fund[BGRIMM-KJSKL-2017-16] ; Liaoning Provincial Department of Education Youth Project[LJ2017QL028] ; Coal Resource Safety Mining and Clean Utilization Engineering Research Center Open Fund[LNTU15KF18]
WOS关键词	CARBONATION
WOS研究方向	Engineering
语种	英语
出版者	CHEMICAL INDUSTRY PRESS CO LTD
WOS记录号	WOS:000573396100026
资助机构	State Key Laboratory of Mineral Processing Science and Technology Open Fund ; Liaoning Provincial Department of Education Youth Project ; Coal Resource Safety Mining and Clean Utilization Engineering Research Center Open Fund
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42254]
专题	中国科学院过程工程研究所
通讯作者	Liu, Fuli
作者单位	1.China Univ Min & Technol, Coll Chem & Environm Engn, Beijing 100083, Peoples R China 2.Liaoning Tech Univ, Coll Min, Fuxing 123000, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Gao, Jing,Li, Qiang,Liu, Fuli. Calcium sulfate whisker prepared by flue gas desulfurization gypsum: A physical-chemical coupling production process[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2020,28(8):2221-2226.
APA	Gao, Jing,Li, Qiang,&Liu, Fuli.(2020).Calcium sulfate whisker prepared by flue gas desulfurization gypsum: A physical-chemical coupling production process.CHINESE JOURNAL OF CHEMICAL ENGINEERING,28(8),2221-2226.
MLA	Gao, Jing,et al."Calcium sulfate whisker prepared by flue gas desulfurization gypsum: A physical-chemical coupling production process".CHINESE JOURNAL OF CHEMICAL ENGINEERING 28.8(2020):2221-2226.