文献类型：期刊文献

中文题名：Seeded Induction Period and Secondary Nucleation of Lithium Carbonate

英文题名：Seeded Induction Period and Secondary Nucleation of Lithium Carbonate

作者：孙玉柱[1];宋兴福[1];汪瑾[1];罗妍[1];于建国[1]

机构：[1]National Engineering Research Center for Integrated Utilization of Salt Lake Resources,East China University of Science and Technology

年份：2009

卷号：9

期号：4

起止页码：652

中文期刊名：过程工程学报

外文期刊名：The Chinese Journal of Process Engineering

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：Supported by Shanghai Leading Academic Discipline Project (No.B506);Program for New Century Excellent Talents in University (No. NCET-08-0776)

语种：中文

中文关键词：碳酸锂;二次成核;吸附容量;搅拌速度

外文关键词：lithium carbonate; reactive crystallization; secondary nucleation; focused beam reflectance measurement;particle video microscope

摘要：Seeded nucleation of lithium carbonate in aqueous solution during reactive crystallization was monitored by FBRM(focused beam reflectance measurement) and PVM(particle video microscope).The impacts of operating variables,such as seed size and loading,stirring speed,on induction period and secondary nucleation were investigated and explained by an adsorption model.The results show that seed surface area plays an important role in secondary nucleation,for more surface area has higher adsorption capacity and consumes more supersaturation on seed growth,thus restrains nucleation better.A method through comparison between pure breakage/attrition and nucleation process was put forward to distinguish attrition-induced and surface-induced nucleations quantitatively,which can reveal the contributions of different nucleation mechanisms.The nucleation processes in different conditions were studied,the principles and valuable experimental data were obtained for seeding approach primarily.FBRM and PVM are useful on-line apparatuses to facilitate seed selection and seeding optimization.
Seeded nucleation of lithium carbonate in aqueous solution during reactive crystallization was monitored by FBRM（focused beam reflectance measurement） and PVM（particle video microscope）.The impacts of operating variables,such as seed size and loading,stirring speed,on induction period and secondary nucleation were investigated and explained by an adsorption model.The results show that seed surface area plays an important role in secondary nucleation,for more surface area has higher adsorption capacity and consumes more supersaturation on seed growth,thus restrains nucleation better.A method through comparison between pure breakage/attrition and nucleation process was put forward to distinguish attrition-induced and surface-induced nucleations quantitatively,which can reveal the contributions of different nucleation mechanisms.The nucleation processes in different conditions were studied,the principles and valuable experimental data were obtained for seeding approach primarily.FBRM and PVM are useful on-line apparatuses to facilitate seed selection and seeding optimization.