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Nucleation, growth and aggregation kinetics of monosodium aluminate hydrate from unseeded sodium aluminate solution
Zhou, Bingxin1,2,4; Cao, Shaotao1,2; You, Shaowei1,2; Chen, Fangfang1,2; Zhang, Fangfang1,2; Li, Bo3; Zhang, Yi1,2
2019-11-01
Source PublicationJOURNAL OF CRYSTAL GROWTH
ISSN0022-0248
Volume525Pages:7
AbstractThe 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.
KeywordNucleation Growth Aggregation Alumina production Monosodium aluminate hydrate
DOI10.1016/j.jcrysgro.2019.125210
Language英语
WOS KeywordCRYSTALLIZATION ; PRECIPITATION
Funding ProjectNational 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 Research AreaCrystallography ; Materials Science ; Physics
WOS SubjectCrystallography ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational 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
WOS IDWOS:000487828000008
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/31057
Collection中国科学院过程工程研究所
Corresponding AuthorCao, Shaotao; You, Shaowei
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Coalmine Alumina Co Ltd, Sanmenxia 472100, Henan, Peoples R China
4.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
Recommended Citation
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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