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Chemcial Industry and Engineering 2022, Vol. 39 Issue (4) :50-56    DOI: 10.13353/j.issn.1004.9533.20210323
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Online characterization of seed preparation and investigation on hydrolysis kinetics of TiOSO4 solution
WANG Kun1, LU Ruifang2, DANG Leping1, HAO Lin1, WEI Hongyuan1
1. School of Chemical Engineering, Tianjin University, Tianjin 300072, China;
2. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Sichuan Panzhihua 617000, China

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Abstract In view of difficulties in seed characterization, Focused Beam Reflectance Measurement(FBRM), ReactRaman and Dynamic Light Scattering were applied for the first time to detect the changes in composition and particle properties of the solution during the preparation of seed, and a proper aging time of the seed crystal with rapid nucleation as the sign of critical time is obtained. Effects of volume and aging time of seed on the kinetics of hydrolysis were investigated. It turns out that hydrolysis rate and conversion are improved when the volume of seed increases or aging time of seed is prolonged before rapid nucleation. The kinetics curve fits well with Avrami nucleation-growth equation.
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WANG Kun
LU Ruifang
DANG Leping
HAO Lin
WEI Hongyuan
Keywordshydrolysis   seed preparation   dynamics   metatitanic acid     
Received 2021-03-24;
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WANG Kun, LU Ruifang, DANG Leping, HAO Lin, WEI Hongyuan.Online characterization of seed preparation and investigation on hydrolysis kinetics of TiOSO4 solution[J]  Chemcial Industry and Engineering, 2022,V39(4): 50-56
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