Preparation of sodium aluminate from the leach liquor of diasporic bauxite in concentrated NaOH solution
文献类型：期刊论文
| 作者 | Cao, Shaotao1,2,3; Zhang, Yifei1,2; Zhang, Yi1,2 |
| 刊名 | HYDROMETALLURGY
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 98期号:3-4页码:298-303 |
| 关键词 | Bauxite Leaching Concentrated NaOH Monosodium aluminates hydrate MAH Crystallization |
| ISSN号 | 0304-386X |
| 通讯作者 | Zhang, YF |
| 英文摘要 | A new process to produce monosodium aluminate hydrates (MAH) by fast crystallization from the leach liquor of a diasporic bauxite in concentrated NaOH solution is presented. The crystallization of MAH was carried out easily compared to the precipitation of gibbsite and the effect of agitation, initial concentration of sodium aluminate, seed amount and the presence of red mud were systematically studied in a batch crystallizer. The apparent kinetics of crystallization followed a second order rate law with an apparent activation energy for MAH crystallization of 38.0 kJ/mol which implies a surface-diffusion controlled mechanism. X-Ray diffraction and scanning electron microscopy identified the structure of MAH as Na(2)O center dot Al(2)O(3)center dot 2.5H(2)O with a flake crystal morphology. The molar ratio a of Na(2)O to Al(2)O(3) in the MAH products was < 1.2 after a simple wash by dilute sodium aluminate. (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] | GIBBSITE CRYSTALLIZATION ; PRECIPITATION ; AGGLOMERATION ; NUCLEATION ; INHIBITION ; MORPHOLOGY ; CRYSTALS ; GROWTH |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000268439800015 |
| 公开日期 | 2013-11-29 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6593]  |
| 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.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Shaotao,Zhang, Yifei,Zhang, Yi. Preparation of sodium aluminate from the leach liquor of diasporic bauxite in concentrated NaOH solution[J]. HYDROMETALLURGY,2009,98(3-4):298-303. |
| APA | Cao, Shaotao,Zhang, Yifei,&Zhang, Yi.(2009).Preparation of sodium aluminate from the leach liquor of diasporic bauxite in concentrated NaOH solution.HYDROMETALLURGY,98(3-4),298-303. |
| MLA | Cao, Shaotao,et al."Preparation of sodium aluminate from the leach liquor of diasporic bauxite in concentrated NaOH solution".HYDROMETALLURGY 98.3-4(2009):298-303. |
入库方式： OAI收割
来源：过程工程研究所
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