CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Characterization and prevention of interfacial crud produced during the extraction of vanadium and chromium by primary amine
Ning, Pengge1,2; Cao, Hongbin1; Liu, Chenming1; Li, Yuping1; Zhang, Yi1; Cao, HB
2009-06-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume97Issue:1-2Pages:131-136
AbstractIn this study, the interfacial crud produced during the extraction of vanadium and chromium by primary amine N(1923) was investigated from the leaching solution containing heavy metals. Effect of pH values of the leaching solution on the percentage of the crud produced and the emulsion type of the crud were studied. X-Ray Fluorescence (XRF), Fourier Transform Infrared Spectroscopy (FT-IR) and X-Ray Diffraction (XRD) and Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES) have been employed for the physiochemical characterizations of the crud. Our results indicate that the percentage of the crud produced is greatly affected by the pH value of the real leaching solution, and the crud is more stable in the acidic solution. The crud is an oil-in-water emulsion with many fine solid particles in the water phase. The particles, which are from the real leaching solution, have been proved to be the main cause for the crud formation. Particles in the cruds are normally composed of a large number of the crystals of Na(2)SO(4), a few SiO(2) and oxides or hydroxids of Fe and Al. However. component proportions of the solids are dependent on the pH values. Possible mechanism of the crud formation is put forward. The solids present in the real leaching solution exert a stabilizing effect on the emulsion, based on which Na(2)SO(4) crystallizes at the interface of the emulsion. Furthermore, the Na(2)SO(4) crystals strengthen the stability of the emulsion, and thereafter the interfacial crud forms. Three effective methods to prevent the crud formation are proposed, i.e. clearing the real leaching solution by membrane filtration, increasing of the amount of the modifier. and applying of hexane as the diluent. (C) 2009 Elsevier B.V. All rights reserved.
KeywordExtraction Separation Vanadium Chromium Interfacial Crud Emulsification
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.hydromet.2009.01.007
Indexed BySCI
Language英语
WOS Keyword3RD PHASE-FORMATION ; IN-OIL EMULSIONS ; SOLVENT-EXTRACTION ; ORGANIC-CONSTITUENTS ; SOLID PARTICLES ; WASTE ; WATER ; CIRCUITS ; AMIDES ; METAL
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000266767200021
Citation statistics
Cited Times:30[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6660
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, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ning, Pengge,Cao, Hongbin,Liu, Chenming,et al. Characterization and prevention of interfacial crud produced during the extraction of vanadium and chromium by primary amine[J]. HYDROMETALLURGY,2009,97(1-2):131-136.
APA Ning, Pengge,Cao, Hongbin,Liu, Chenming,Li, Yuping,Zhang, Yi,&Cao, HB.(2009).Characterization and prevention of interfacial crud produced during the extraction of vanadium and chromium by primary amine.HYDROMETALLURGY,97(1-2),131-136.
MLA Ning, Pengge,et al."Characterization and prevention of interfacial crud produced during the extraction of vanadium and chromium by primary amine".HYDROMETALLURGY 97.1-2(2009):131-136.
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