CAS OpenIR
RECOVERY OF SODIUM FROM ALUMINA-EXTRACTED FLY ASH USING CONCENTRATED SODIUM CARBONATE SOLUTION
Wang, Z.1,2; Zheng, S.1; Ma, S.1; Ding, J.1; Wang, X.1
2018
Source PublicationJOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY
ISSN1450-5339
Volume54Issue:2Pages:225-232
AbstractA novel method for the recovery of sodium from alumina-extracted fly ash (AEFA) using concentrated Na2CO3 solution is presented. Sodium was efficiently extracted from AEFA, which was mainly composed of NaCaHSiO4 . The factors influencing the process were systematically investigated, and the optimal conditions were determined to be: reaction temperature = 180 degrees C, Na2CO3 concentration = 170 g/L, liquid-to-solid ratio 10 mL/g, and reaction time = 2 h. Under optimal conditions, a low Na2O content of 1.02 wt% of the products, with Na2O extraction rate of 93.79% was achieved. The results indicated that this process was more effective than the recovery of sodium from AEFA using a dilute NaOH solution. Furthermore, this process avoided the production of a dilute NaOH solution, therefore lowering the energy consumption during the concentration and recycling of sodium, when compared with the NaOH-based route. Therefore, the recovery of sodium from AEFA using concentrated Na2CO3 solution is more suitable for use in industrial applications.
KeywordFly ash NaCaHSiO4 Sodium carbonate Sodium extraction
DOI10.2298/JMMB180309010W
Language英语
WOS KeywordC-S-H ; AL ; DECOMPOSITION ; TOBERMORITE ; RESIDUE ; ALKALI ; AL-27 ; NMR
Funding ProjectNational Basic Research Program [973 Program][2013CB632601] ; National Natural Science Foundation of China[51274179]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNational Basic Research Program [973 Program] ; National Natural Science Foundation of China
WOS IDWOS:000454256700010
PublisherTECHNICAL FACULTY, BOR-SERBIA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27687
Collection中国科学院过程工程研究所
Corresponding AuthorMa, S.
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wang, Z.,Zheng, S.,Ma, S.,et al. RECOVERY OF SODIUM FROM ALUMINA-EXTRACTED FLY ASH USING CONCENTRATED SODIUM CARBONATE SOLUTION[J]. JOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY,2018,54(2):225-232.
APA Wang, Z.,Zheng, S.,Ma, S.,Ding, J.,&Wang, X..(2018).RECOVERY OF SODIUM FROM ALUMINA-EXTRACTED FLY ASH USING CONCENTRATED SODIUM CARBONATE SOLUTION.JOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY,54(2),225-232.
MLA Wang, Z.,et al."RECOVERY OF SODIUM FROM ALUMINA-EXTRACTED FLY ASH USING CONCENTRATED SODIUM CARBONATE SOLUTION".JOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY 54.2(2018):225-232.
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