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Nucleation, growth and aggregation kinetics of monosodium aluminate hydrate from unseeded sodium aluminate solution

文献类型：期刊论文

作者Zhou, Bingxin1,2,3; Cao, Shaotao2,3; You, Shaowei2,3; Chen, Fangfang2,3; Zhang, Fangfang2,3; Li, Bo4; Zhang, Yi2,3
刊名JOURNAL OF CRYSTAL GROWTH
出版日期2019-11-01
卷号525页码:7
关键词Nucleation Growth Aggregation Alumina production Monosodium aluminate hydrate
ISSN号0022-0248
DOI10.1016/j.jcrysgro.2019.125210
英文摘要The crystallization of monosodium aluminate hydrate (MAH) from sodium aluminate solution is the key step in the hydro-chemical process for treating Bayer red mud. The nucleation, growth and aggregation kinetics of MAH from unseeded sodium aluminate solution with low supersaturation was studied. It was found that the increase of temperature or the decrease of initial alpha(k) (molar ratio of Na2O and Al2O3 in aluminate solution) could lead to the increase of average crystal size while the increase of agitation speed had an adverse effect. The growth rate, the nucleation rate and the aggregation kernel were determined using a volume-independent growth aggregation model. The calculation of aggregation kernel was divided into two parts in terms of crystal size: smaller than 10 mu m and larger than 10 mu m. Results implied that small crystals below 10 mu m aggregated more significantly than large crystals. The aggregation dominated the enlargement of small crystals, but the enlargement of large crystals mainly stemmed from the growth rather than the aggregation.
WOS关键词CRYSTALLIZATION ; PRECIPITATION
资助项目National Natural Science Foundation of China[51674233] ; Henan Transfer Project of CAS Scientific and Technological Achievements[2019103] ; Guangxi Natural Science Foundation[2016GXNSFEA380002] ; Shanxi Province Coal Based Low-carbon Technology Major Projects[MC2016-05] ; Major Science and Technology Program for Water Pollution Control and Treatment[2018ZX07402005]
WOS研究方向Crystallography ; Materials Science ; Physics
语种英语
WOS记录号WOS:000487828000008
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Henan Transfer Project of CAS Scientific and Technological Achievements ; Guangxi Natural Science Foundation ; Shanxi Province Coal Based Low-carbon Technology Major Projects ; Major Science and Technology Program for Water Pollution Control and Treatment
源URL[http://ir.ipe.ac.cn/handle/122111/31056]  
专题中国科学院过程工程研究所
通讯作者Cao, Shaotao; You, Shaowei
作者单位1.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
4.Coalmine Alumina Co Ltd, Sanmenxia 472100, Henan, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Bingxin,Cao, Shaotao,You, Shaowei,et al. Nucleation, growth and aggregation kinetics of monosodium aluminate hydrate from unseeded sodium aluminate solution[J]. JOURNAL OF CRYSTAL GROWTH,2019,525:7.
APA Zhou, Bingxin.,Cao, Shaotao.,You, Shaowei.,Chen, Fangfang.,Zhang, Fangfang.,...&Zhang, Yi.(2019).Nucleation, growth and aggregation kinetics of monosodium aluminate hydrate from unseeded sodium aluminate solution.JOURNAL OF CRYSTAL GROWTH,525,7.
MLA Zhou, Bingxin,et al."Nucleation, growth and aggregation kinetics of monosodium aluminate hydrate from unseeded sodium aluminate solution".JOURNAL OF CRYSTAL GROWTH 525(2019):7.

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来源：过程工程研究所

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