| Behavior of mixed ZnO and SiO2 nano-particles in magnetic field assisted fluidization |
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| 作者姓名： | Ping Zeng Yao Zhou Guanqun Chen Qingshan Zhu |
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| 作者单位： | [1]School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China [2]Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China |
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| 基金项目： | Acknowledgement The authors are grateful to Professor Hongzhong Li for his help offered in the Institute of Process Engineering, Chinese Academy of Sciences. |
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| 摘 要： | The fluidization behavior of ZnO nano-particles in magnetic fluidized bed （MFB） by adding coarse magnetic particles was investigated, followed by the co-fluidization of mixtures of ZnO and SiO2 nano-particles. For such co-fluidization, bed expansion was found to change smoothly with gas velocity through a range of stable operation. By measuring the bed expansion ratio and pressure drop, a stability diagram for the mixture in MFB was obtained. Within this stable operation range, with increasing gas velocity the pressure drop hardly changes as the bed expands, up to an expansion ratio of more than 4.
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| 关 键 词： | ZnO SiO2 纳米颗粒 磁场辅助流态化 行为 涂料 |
| 修稿时间： | 2006-12-272007-01-20 |
Behavior of mixed ZnO and SiO2 nano-particles in magnetic field assisted fluidization |
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| Ping Zeng Yao Zhou Guanqun Chen Qingshan Zhu.Behavior of mixed ZnO and SiO2 nano-particles in magnetic field assisted fluidization[J].China Particuology,2007,5(1):169-173. |
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| Authors: | Ping Zeng Tao Zhou Guanqun Chen Qingshan Zhu |
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| Abstract: | The fluidization behavior of ZnO nano-particles in magnetic fluidized bed (MFB) by adding coarse magnetic particles was investigated, followed by the co-fluidization of mixtures of ZnO and SiO2 nano-particles. For such co-fluidization, bed expansion was found to change smoothly with gas velocity through a range of stable operation. By measuring the bed expansion ratio and pressure drop, a stability diagram for the mixture in MFB was obtained. Within this stable operation range, with increasing gas velocity the pressure drop hardly changes as the bed expands, up to an expansion ratio of more than 4. |
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| Keywords: | Nano-particle Fluidization Magnetic fluidized bed Coarse magnet Mixture |
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