文献类型：期刊文献

英文题名：Unseeded Supersolubility of Lithium Carbonate: Experimental Measurement and Simulation with Mathematical Models

作者：Sun, Yuzhu[1];Song, Xingfu[1];Wang, Jin[1];Luo, Yan[1];Yu, Jianguo[1]

机构：[1]E China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2009

卷号：311

期号：23-24

起止页码：4714

外文期刊名：JOURNAL OF CRYSTAL GROWTH

收录：;EI(收录号：20094612449527);WOS:【SCI-EXPANDED(收录号:WOS:000272413300010)】；

基金：This work was financially supported by the Shanghai Leading Academic Discipline Project (No. B506) and Program for New Century Excellent Talents in University (NCET-08-0776).

语种：英文

外文关键词：Supersaturated solutions; Growth from solutions; Lithium compounds; Laser method

摘要：A laser aparatus was employed to investigate the unseeded supersolubility values of Li2CO3 in aqueous solution. It shows the supersolubility of Li2CO3 decreases with the raise of temperature and stirring speed, and with a reduction of feeding rate of Na2CO3. The introduce of ultrasound field leads to obvious reduction on supersolubility, whereas magnetic field causes little effect. The involving factors of impurities and additives on the supersolubility were also studied. It is found that the supersolubility value decreases with the addition of NaCl, KCl, NaNO3 and NaBr, while increases at the presence of Na2SO4, CH4N2O, NH4Cl, (NH4)(2)SO4 and EDTA disodium. Meanwhile, two mathematical models, empirical correlation and BP neural network, were used to simulate the supersolubility value as a function of temperature and feeding rate of Na2CO3. Compared with empirical correlation method, BP neural network simulation has better consistence with the experimental data. (C) 2009 Elsevier B.V. All rights reserved.