CAS OpenIR
Calcium sulfate whisker prepared by flue gas desulfurization gypsum: A physical-chemical coupling production process
Gao, Jing1; Li, Qiang1; Liu, Fuli2,3
2020-08-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume28Issue:8Pages:2221-2226
AbstractIn 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.
KeywordFlue gas desulfurization gypsum Calcium sulfate whiskers Crystallization kinetic Physical-chemical coupling
DOI10.1016/j.cjche.2020.05.021
Language英语
WOS KeywordCARBONATION
Funding ProjectState 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 Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationState 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
WOS IDWOS:000573396100026
PublisherCHEMICAL INDUSTRY PRESS CO LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42255
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Fuli
Affiliation1.Liaoning Tech Univ, Coll Min, Fuxing 123000, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.China Univ Min & Technol, Coll Chem & Environm Engn, Beijing 100083, Peoples R China
Recommended Citation
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.
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