| 氢氧化镁结晶动力学研究 |
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| 引用本文： | 陈启华,王学魁,沙作良,熊粲.氢氧化镁结晶动力学研究[J].盐业与化工,2012,41(4):15-18. |
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| 作者姓名： | 陈启华 王学魁 沙作良 熊粲 |
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| 作者单位： | 天津科技大学,天津市海洋资源与化学重点实验室,天津300457 |
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| 摘 要： | 结晶动力学的研究是结晶器设计、结晶过程放大和优化的重要依据。文章研究了间歇反应过程中氢氧化镁结晶动力学,采用间歇动态法对结晶过程基本参数进行测试,根据粒数衡算和质量衡算关系,利用晶体成核生长经验公式拟合出氢氧化镁反应结晶动力学表达式。结果表明:氢氧化镁结晶过程晶体生长速率与粒度无关,得到了过饱和度、悬浮密度与成核速率之间的关系。
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| 关 键 词： | 氢氧化镁 结晶动力学 成核速率 生长速率 |
Study on the Crystallization Kinetics of Magnesium Hydroxide |
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| CHEN Qi-hua
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WANG Xue-kui
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SHA Zuo-liang
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XIONG Can.Study on the Crystallization Kinetics of Magnesium Hydroxide[J].Jounral of Salt and Chemical Industry,2012,41(4):15-18. |
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| Authors: | CHEN Qi-hua WANG Xue-kui SHA Zuo-liang XIONG Can |
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| Affiliation: | (Tianjin Key Laboratory of Marine Resources and Chemistry,Tianjin University of Science and Technology,Tianjin 300457,China) |
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| Abstract: | The study of crystallization kinetics could provide the basic date for crystallizer design,scale-up,optimization of the crystallization process.In this paper the crystallization kinetics of Magnesium Hydroxide for the batch crystallization process is studied.The main kinetic parameters of crystallization are measured off-line.Related to the population balance equation and mass balance equation,function related to the nucleation and growth is established.The results show that the crystallization process of Magnesium Hydroxide obey the △L law.The kinetics shows the relationship between supersaturation,suspension densities and the nucleation rate. |
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| Keywords: | Magnesium Hydroxide crystallization kinetics the nucleation rate the growth rate |
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