| Kinetics of crystal growth on seeded precipitation of sodium aluminate solutions with new device |
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| 引用本文： | 陈金清,张平民,甘国耀,尹周澜,陈启元. Kinetics of crystal growth on seeded precipitation of sodium aluminate solutions with new device[J]. 中国有色金属学会会刊, 2004, 14(4): 824-828 |
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| 作者姓名： | 陈金清 张平民 甘国耀 尹周澜 陈启元 |
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| 作者单位： | [1]SchoolofChemistryandChemicalEngineering,CentralSouthUniversity,Changsha410083,China [2]GuangxiCorporationofChinaAluminumCorporation,Pingguo531400,China |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家自然科学基金 |
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| 摘 要： | A new device was designed, which can effectively avoid the undesired nucleation and agglomeration of fine particles on the experimental results during the seaded precipitation of sodium aluminate solution, and moreover, the experimental conditions are nearly kept constant during the experiment. With the new device, it is proven that a good result can be obtained on the kinetics study of the crystal growth in seeded precipitation of sodium aluminate solution. Experiments were carried out with the concentration of Na2O (Nk)170 g/L, the mole ratio of Na2O to Al2O3(ak) all between 1.52 to 2.01, at 65, 70, 75℃, respectively. And the kinetics equation of crystal growth of gibbsite was deduced.
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| 关 键 词： | 铝酸钠溶液 晶种分解 晶体生长 氧化铝 动力学 |
Kinetics of crystal growth on seeded precipitation of sodium aluminate solutions with new device |
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| CHEN Jin-qing,ZHANG Ping-min,GAN Guo-yao,YIN Zhou-lan,CHEN Qi-yuan. Kinetics of crystal growth on seeded precipitation of sodium aluminate solutions with new device[J]. Transactions of Nonferrous Metals Society of China, 2004, 14(4): 824-828 |
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| Authors: | CHEN Jin-qing ZHANG Ping-min GAN Guo-yao YIN Zhou-lan CHEN Qi-yuan |
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| Affiliation: | CHEN Jin-qing~1,ZHANG Ping-min~1,GAN Guo-yao~2,YIN Zhou-lan~1,CHEN Qi-yuan ~1 |
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| Abstract: | A new device was designed, which can effectively avoid the undesired nucleation and agglomeration of fine particles on the experimental results during the seaded precipitation of sodium aluminate solution, and moreover, the experimental conditions are nearly kept constant during the experiment. With the new device, it is proven that a good result can be obtained on the kinetics study of the crystal growth in seeded precipitation of sodium aluminate solution. Experiments were carried out with the concentration of Na2 O (Nk)170 g/L, the mole ratio of Na2 O to Al2 O3 (αk) all between 1.52 to 2.01, at 65, 70, 75 ℃, respectively. And the kinetics equation of crystal growth of gibbsite was deduced. |
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| Keywords: | sodium aluminate solution seeded precipitation crystal growth kinetics |
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