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| Crystallization Kinetics of Monosodium Aluminate Hydrate in Concentrated Sodium Aluminate Solutions | |
| Alternative Title | Ind. Eng. Chem. Res. |
| You, Shaowei1,3; Zhang, Yifei1,2; Cao, Shaotao1; Chen, Fangfang1; Zhang, Yi1 | |
| 2012-06-06 | |
| Source Publication | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| ISSN | 0888-5885 |
| Volume | 51Issue:22Pages:7736-7741 |
| Abstract | The nucleation, growth, and agglomeration of monosodium aluminate hydrate (MAH) crystallization in concentrated sodium aluminate solutions were investigated in a steady-state mixed-suspension-mixed-product-removal (MSMPR) crystallizer, and the mechanism was analyzed in detail. The crystal growth was diffusion- and surface-integration-controlled, and the secondary nucleation, as a result of crystal-agitator and crystal-crystallizer collisions, was determined further. The agglomeration kernel, expressed in terms of mean residence time, growth rate, and suspension density, was found to have a positive order of about 0.52 in the suspension density, indicating that the agglomeration kernel increased at higher frequencies of collisions between particles. The growth rate of MAH was found to be higher than that of gibbsite in active NaAl(OH)(4)-NaHCO3 systems, but the nucleation rate of MAH was lower than that of gibbsite in seeded-hydrolysis processes.; The nucleation, growth, and agglomeration of monosodium aluminate hydrate (MAH) crystallization in concentrated sodium aluminate solutions were investigated in a steady-state mixed-suspension-mixed-product-removal (MSMPR) crystallizer, and the mechanism was analyzed in detail. The crystal growth was diffusion- and surface-integration-controlled, and the secondary nucleation, as a result of crystal-agitator and crystal-crystallizer collisions, was determined further. The agglomeration kernel, expressed in terms of mean residence time, growth rate, and suspension density, was found to have a positive order of about 0.52 in the suspension density, indicating that the agglomeration kernel increased at higher frequencies of collisions between particles. The growth rate of MAH was found to be higher than that of gibbsite in active NaAl(OH)(4)-NaHCO3 systems, but the nucleation rate of MAH was lower than that of gibbsite in seeded-hydrolysis processes. |
| Keyword | Continuous Msmpr Crystallizer Product Removal Crystallizer Bayer Liquors Gibbsite Precipitation Al(Oh)(3) crystAls Agglomeration Growth Nucleation Morphology Mechanism |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| DOI | 10.1021/ie202622h |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | CONTINUOUS MSMPR CRYSTALLIZER ; PRODUCT REMOVAL CRYSTALLIZER ; BAYER LIQUORS ; GIBBSITE PRECIPITATION ; AL(OH)(3) CRYSTALS ; AGGLOMERATION ; GROWTH ; NUCLEATION ; MORPHOLOGY ; MECHANISM |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| WOS ID | WOS:000304837500034 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/6294 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | You, Shaowei,Zhang, Yifei,Cao, Shaotao,et al. Crystallization Kinetics of Monosodium Aluminate Hydrate in Concentrated Sodium Aluminate Solutions[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2012,51(22):7736-7741. |
| APA | You, Shaowei,Zhang, Yifei,Cao, Shaotao,Chen, Fangfang,&Zhang, Yi.(2012).Crystallization Kinetics of Monosodium Aluminate Hydrate in Concentrated Sodium Aluminate Solutions.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,51(22),7736-7741. |
| MLA | You, Shaowei,et al."Crystallization Kinetics of Monosodium Aluminate Hydrate in Concentrated Sodium Aluminate Solutions".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 51.22(2012):7736-7741. |
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| Crystallization Kine（2803KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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