| 不同尺寸煤颗粒分选机理的研究 |
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| 引用本文： | 李春林,郭鹏,宋维源.不同尺寸煤颗粒分选机理的研究[J].化工矿产地质,2010,32(3):189-192. |
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| 作者姓名： | 李春林 郭鹏 宋维源 |
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| 作者单位： | 辽宁工程技术大学力学与工程学院,辽宁阜新1230004 |
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| 摘 要： | 针对不同用户对煤炭粒径有不同的要求,煤颗粒粒径在4mm以下,其中0.125mm粒径以下的颗粒不能超过10%的无烟煤精粉有大量的出口需求,而目前所用设备产品质量不能满足要求,而且效率低的状况,对煤颗粒粒级分选设备的工作原理进行了分析并提出改进方案。基于流体力学理论对改进的设备的工作原理进行了数学建模和算例分析,得出随粒径不同,沉降时间不同,因而在风流中沉降距离不同,从而可以利用风流达到对煤粒进行分选的目的。
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| 关 键 词： | 煤粒粒径 分选机理 数学模型 沉降时间 沉降距离 |
RESEARCH ON MECHANISM OF THE SEPATION OF COAL GRAINS WITH DIFFERENT SIZES |
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| Li Chunlin,Guo Peng,Song Weiyuan.RESEARCH ON MECHANISM OF THE SEPATION OF COAL GRAINS WITH DIFFERENT SIZES[J].Geology of Chemical Minerals,2010,32(3):189-192. |
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| Authors: | Li Chunlin Guo Peng Song Weiyuan |
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| Institution: | Li Chunlin Guo Peng Song Weiyuan College of Mechanics and Engineering,Liaoning Technical University,Fuxin,Liaoning,123000,China |
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| Abstract: | Customers＇ demands for coal size are different with each other.Aimed at anthracite coal powder that the diameter of coal grain is under 4mm,where the grain whose diameter is under 0.125mm isn＇t more than 10 percent have a mass of demands of export,but quality and efficiency of present product can＇t meet to the need,the work principle of coal size separator was analyzed,and an improved scheme was proposed.Based on theory of hydrodynamics,mathematics model of separating mechanism was set up,and concrete examples were analyzed.The results show that deposition time of different grain diameter is different during falling,so the deposition distance of coal grains of different diameter differs in the airflow.Therefore the purpose that coal grains of different diameter are separated by airflow during falling can be reached. |
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| Keywords: | grain diameter of coal separating mechanism mathematics model sedimentation time sedimentation distance |
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