中文关键词:搅拌速度同离子效应碳钠矾溶解动力学Stumm模型 英文关键词:Stirring speedCommon ion effectBurkeiteDissolution kineticsStumm model 基金项目:国家自然科学基金项目（41073050），企业委托技术研发项目（2015-6300-101）

作者	单位	E-mail
张响飞	中国科学院青海盐湖研究所	zxf2014@yeah.com
边绍菊	中国科学院青海盐湖研究所
高丹丹	中国科学院青海盐湖研究所
董亚萍	中国科学院青海盐湖研究所
李武	中国科学院青海盐湖研究所	liwu2016@126.com

摘要点击次数:2138 全文下载次数:0 中文摘要: 研究了25℃时，搅拌速度，加样量及氯化钠的量等不同实验条件下，Na2CO3, Na2SO4, NaCl混合盐的溶解过程，对不同时刻液相的化学组成进行分析并鉴定其平衡时的固相，结果表明：混合盐溶解前期搅拌速度占主导因素，当溶液中三种盐达到一定浓度后，同离子效应占主导因素，随着加样量的增加，碳酸钠和硫酸钠浓度达到一定程度之后反应生成碳钠矾。结合动力学模型计算得到体系中NaCl的溶解动力学方程，得出在25℃条件下溶解符合Stumm模型，溶解过程属于扩散过程控制，同时还伴随着界面反应和化学反应。 英文摘要: Dissolving process of salt mixture (Na2CO3+Na2SO4+NaCl) under different stirring speed, sample amounts and the amount of NaCl at 25oC was studied. Liquid phase and the equilibrium solid phase were characterized by chemical analysis and solid phase identification, respectively. The results indicate that at the early stage of the dissolution process, the stirring speed act as the dominant factor, but common ion effect will become the dominant factor after reaching a certain concentration of three salts solution. With the increase of sample amounts, Na2CO3 will react with Na2SO4 to form burkeite after reaching a certain concentration. Dissolution kinetics equations for NaCl were obtained with dynamic model simulation, and it conformed to Stumm model under this experimental condition. It is concluded that dissolving process was controlled by diffusion process, but also accompanied by interface reaction and chemical reaction. 查看全文查看/发表评论下载PDF阅读器 相关附件：版权转让声明书 -->