CAS OpenIR
Preparation of strontium carbonate via celestite leaching in NaHCO3 using two interconnected reactors
Yan, Fangjia1,3; Zhang, Xiaojuan1,3; Asselin, Edouard2; Duan, Dongping1,3; Li, Zhibao1
2021-09-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume204Pages:9
AbstractTwo interconnected reactors were used to produce high quality SrCO3 by leaching celestite in NaHCO3 solution at elevated temperature of 363.15 K. This new method avoids undesirable polluting by-products generated in the widely used black ash process. The precipitation kinetics of celestite (SrSO4) leaching in NaHCO3 at various temperatures was investigated with a view to industrial application. It was found that high temperature significantly enhanced the leaching conversion while initially concentrated Na2SO4 in leaching solution has limited influence on the leaching reaction. The new process overcomes the key disadvantage of high energy consumption during sodium sulfate recovery that is inherent in the soda ash process. Having studied the effects of NaHCO3 concentration and temperature on the leaching reaction, a shrinking core model was established with an apparent activation energy of E-a = 86.6 kJ/Mol. The rate-determining step was the diffusion of ions through the product layer. Saleable Na2SO4 products were successfully obtained via evaporative cooling crystallisation
KeywordStrontium carbonate Leaching kinetics Celestite Sodium bicarbonate Sodium sulfate recovery
DOI10.1016/j.hydromet.2021.105729
Language英语
WOS KeywordLEAD SULFATE ; SOLUBILITY ; SYSTEM ; ELECTROLYTES ; PREDICTION ; CONVERSION ; RECOVERY ; NH4HCO3
Funding ProjectNational Natural Science Foundation of China[21776279] ; National Natural Science Foundation of China[21978290]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000701333800009
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50339
Collection中国科学院过程工程研究所
Corresponding AuthorDuan, Dongping; Li, Zhibao
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, 1 Bei Er Jie Rd, Beijing 100190, Peoples R China
2.Univ British Columbia, Dept Mat Engn, 309-6350 Stores Rd, Vancouver, BC V6T 1Z4, Canada
3.Univ Chinese Acad Sci, Sch Chem Engn, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yan, Fangjia,Zhang, Xiaojuan,Asselin, Edouard,et al. Preparation of strontium carbonate via celestite leaching in NaHCO3 using two interconnected reactors[J]. HYDROMETALLURGY,2021,204:9.
APA Yan, Fangjia,Zhang, Xiaojuan,Asselin, Edouard,Duan, Dongping,&Li, Zhibao.(2021).Preparation of strontium carbonate via celestite leaching in NaHCO3 using two interconnected reactors.HYDROMETALLURGY,204,9.
MLA Yan, Fangjia,et al."Preparation of strontium carbonate via celestite leaching in NaHCO3 using two interconnected reactors".HYDROMETALLURGY 204(2021):9.
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