CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Selective extraction and deep removal of tungsten from sodium molybdate solution by primary amine N1923
Ning, Pengge1,2,3; Cao, Hongbin1,2; Zhang, Yi1,2; Cao, HB
2009-11-19
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume70Issue:1Pages:27-33
AbstractSelectively extracting tungsten to purify sodium molybdate solution was studied using primary amine N1923, including various conditions, such as equilibrium pH values, concentrations of extractant in organic phase and metals in feed solution, contact time of extraction and stripping, types of acidic solutions added, temperature of extraction and the dosage of stripping agent. Graphical method using McCabe-Thiele diagram and counter-current extraction simulation (CCES) were used to determine the required stages of deep removal of tungsten. The results show that appropriate concentrations of tungsten and molybdenum in feed solution have great influence on the difficult degree of the separation between the two metals. Organic phase including 0.051 M of N1923 modified by LK-N21X diluted in kerosene can extract 92.7% of tungsten in sulfuric acid solution at equilibrium pH value of 7.07 for 10 min in one-stage extraction at 15.5 degrees C, and the separation factor reaches 329 under those optimum conditions. A two-stage CCES removes 99.83% of tungsten and obtains the purified sodium molybdate solution where W/Mo (mass ratio) reaches 2.9 x 10(-5). Stripping can be accomplished by NaOH solution completely and quickly. Furthermore, the extraction and stripping reactions of tungsten and molybdenum in equilibrium were proposed. (C) 2009 Elsevier B.V. All rights reserved.
KeywordExtraction Separation Tungsten Molybdenum Primary Amine
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.seppur.2009.08.006
Indexed BySCI
Language英语
WOS KeywordSOLVENT-EXTRACTION ; LEACH LIQUORS ; PRIMENE JMT ; MOLYBDENUM ; SEPARATION ; EQUILIBRIUM ; PHOSPHORUS ; EXCHANGE ; CHROMIUM ; DEHPA
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000272061700003
Citation statistics
Cited Times:60[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6551
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorCao, HB
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ning, Pengge,Cao, Hongbin,Zhang, Yi,et al. Selective extraction and deep removal of tungsten from sodium molybdate solution by primary amine N1923[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2009,70(1):27-33.
APA Ning, Pengge,Cao, Hongbin,Zhang, Yi,&Cao, HB.(2009).Selective extraction and deep removal of tungsten from sodium molybdate solution by primary amine N1923.SEPARATION AND PURIFICATION TECHNOLOGY,70(1),27-33.
MLA Ning, Pengge,et al."Selective extraction and deep removal of tungsten from sodium molybdate solution by primary amine N1923".SEPARATION AND PURIFICATION TECHNOLOGY 70.1(2009):27-33.
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