| 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
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| 2009-06-01 | |
| Source Publication | HYDROMETALLURGY
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| ISSN | 0304-386X |
| Volume | 97Issue:1-2Pages:131-136 |
| Abstract | In 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. |
| Keyword | Extraction Separation Vanadium Chromium Interfacial Crud Emulsification |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1016/j.hydromet.2009.01.007 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | 3RD PHASE-FORMATION ; IN-OIL EMULSIONS ; SOLVENT-EXTRACTION ; ORGANIC-CONSTITUENTS ; SOLID PARTICLES ; WASTE ; WATER ; CIRCUITS ; AMIDES ; METAL |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000266767200021 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://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 Author | Cao, HB |
| Affiliation | 1.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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| 20131209-141-复件 1-s2（434KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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