| 加重质流化特性及其流化床分选效果 |
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| 引用本文： | 丁淑芳,康文泽,韦鲁滨. 加重质流化特性及其流化床分选效果[J]. 黑龙江科技学院学报, 2010, 20(4): 288-291 |
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| 作者姓名： | 丁淑芳 康文泽 韦鲁滨 |
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| 作者单位： | 1. 黑龙江科技学院,资源与环境工程学院,哈尔滨,150027
2. 中国矿业大学,化学与环境工程学院,北京,100083 |
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| 摘 要： | 为提高空气重介质流化床的分选效果，以磁铁矿粉为加重质，分析其粒度组成及流化特性，并利用不同密度级的示重块代替煤，在不同气速下进行流化床分选实验。结果表明，加重质D的粒度组成基本呈正态分布；该加重质在流化数为1．14～1．43时，可形成较稳定的床层，流化效果较好；以加重质D为分选介质，当气速为6．60cm／s时，流化床的分选效果最佳。该研究为进一步确定流化床的分选范围提供了依据。
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| 关 键 词： | 空气重介质 流化床 流化特性 分选效果 |
Analyzing fluidization characteristics of dense-medium and separation effectiveness of fluidized bed |
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| DING Shufang,KANG Wenze,WEI Lubin. Analyzing fluidization characteristics of dense-medium and separation effectiveness of fluidized bed[J]. Journal of Heilongjiang Institute of Science and Technology, 2010, 20(4): 288-291 |
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| Authors: | DING Shufang KANG Wenze WEI Lubin |
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| Affiliation: | 1. College of Resource ＆ Environmental Engineering, Heilongjiang Institute of Science ＆ Technology, Harbin 150027, China; 2. College of Chemical ＆ Environmental Engineering, China University of Mining ＆ Technology, Beijing 100083, China) |
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| Abstract: | This paper is an effort to improve the separation effectiveness of air dense-medium fluid- ized bed by taking magnetite powder as dense medium to analyze its particle size distribution and fluid- ization characteristics and replacing the coal with the density levels of indicated weights to perform separa- tion experiment with different velocity. The results show that the dense-medium D with particle size of normal distribution tends to form more stable bed within fluidization number of 1.14 - 1.43, and gives better fluidization effectiveness. The best separation effectiveness of fluidized bed comes from dense medi- um taken as separation medium, with the velocity of 6.60 em/s. This study provides the basis for further determining the range of separation in the fluidized bed. |
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| Keywords: | air-dense medium fluidized bed fluidized characteristic separation effectiveness |
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