Characterization and prevention of interfacial crud produced during the extraction of vanadium and chromium by primary amine
文献类型：期刊论文
| 作者 | Ning, Pengge1,2; Cao, Hongbin1; Liu, Chenming1 ; Li, Yuping1; Zhang, Yi1
|
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2009-06-01 |
| 卷号 | 97期号:1-2页码:131-136 |
| 关键词 | Extraction separation Vanadium Chromium Interfacial crud Emulsification |
| ISSN号 | 0304-386X |
| 通讯作者 | Cao, HB |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | 3RD PHASE-FORMATION ; IN-OIL EMULSIONS ; SOLVENT-EXTRACTION ; ORGANIC-CONSTITUENTS ; SOLID PARTICLES ; WASTE ; WATER ; CIRCUITS ; AMIDES ; METAL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000266767200021 |
| 公开日期 | 2013-12-09 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6660]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 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 |
| 推荐引用方式 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.(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. |
入库方式： OAI收割
来源：过程工程研究所
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