| Characterization of irregular seeds on gibbsites precipitated from caustic aluminate solutions |
| |
| 作者姓名： | 陈国辉 陈启元 尹周澜 尹志民 |
| |
| 作者单位： | School of Chemistry and Chemical Engineering Central South University Changsha 410083 China，School of Chemistry and Chemical Engineering Central South University Changsha 410083 China，School of Chemistry and Chemical Engineering Central South University Changsha 410083 China，School of Chemistry and Chemical Engineering Central South University Changsha 410083 China |
| |
| 基金项目： | Project（59874031） supported by the National Priority Development Fundamental Research; Project（G19906492-3） supported by China Post-Doctor Program. |
| |
| 摘 要： | 1 Introduction Because of the great viscosity and surface tension of caustic aluminate solutions, industrial aluminum trihydroxide products cannot be precipitated from caustic aluminate solutions directly. An amount of gibbsites seeds should be added to i…
|
| 关 键 词： | 铝土矿 分形理论 光谱尺度 腐蚀性铝酸盐溶液 |
| 收稿时间： | 2005-06-03 |
| 修稿时间： | 2005-09-15 |
Characterization of irregular seeds on gibbsites precipitated from caustic aluminate solutions |
| |
| CHEN Guo-hui,CHEN Qi-yuan,YIN Zhou-lan,YIN Zhi-min.Characterization of irregular seeds on gibbsites precipitated from caustic aluminate solutions[J].Transactions of Nonferrous Metals Society of China,2006,16(2):483-487. |
| |
| Authors: | CHEN Guo-hui CHEN Qi-yuan YIN Zhou-lan YIN Zhi-min |
| |
| Affiliation: | 1. School of Quality and Technical Supervision, Hebei University, Baoding 071002, PR China;2. National & Local Joint Engineering Research Center of Metrology Instrument and System, Hebei University, Baoding 071002, PR China;3. Hebei Key Laboratory of Energy Metering and Safety Testing Technology, Hebei University, Baoding 071002, PR China;1. Materials and Energy Research Center, Alborz, Meshkindasht, Iran;2. University of Tehran, Tehran, Iran;1. Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China;2. Department of Chemistry, Qinghai Normal University, Xining 810008, China;3. University of the Chinese Academy of Sciences, Beijing 100049, China |
| |
| Abstract: | The irregular surface of seeds on which gibbsites are precipitated from caustic aluminate solutions, was investigated according to the fractal theory. Two kinds of fractal dimensions were used to characterize these irregularity. Box-dimension and spectral dimension are based on the SEM images of seeds and diffusive dynamic equation of the precipitation respectively. Both these two dimensions are affected by the reaction temperature, evolved with different reaction conditions and can reflect the influence of irregularity of seeds on the precipitation rate. Box dimension is fit for the characterization of the irregular morphology of seeds, while spectral dimension can explain the fractal dynamic behavior. |
| |
| Keywords: | gibbsite fractal theory box-dimension spectral dimension caustic aluminate solution fracted dynamic behavior |
| 本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录！ |
|
