| 颗粒组分特性对扬矿硬管输送速度的影响 |
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| 引用本文： | 周知进,刘爱军,夏毅敏,唐达生.颗粒组分特性对扬矿硬管输送速度的影响[J].中南大学学报(自然科学版),2011(9). |
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| 作者姓名： | 周知进 刘爱军 夏毅敏 唐达生 |
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| 作者单位： | 湖南科技大学机电工程学院;中南大学机电工程学院;长沙矿冶研究院深海矿产资源开发利用技术国家重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(50875081); 中国博士后基金资助项目(200804409923); 湖南省科技支撑计划项目(2009SK3159) |
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| 摘 要： | 对颗粒组分特性与扬矿硬管输送速度之间规律进行研究。理论分析与试验研究结果表明:单颗粒垂直管道输送时的滑移速度即为其沉降速度,当输送水流速度继续增大到超过了沉降速度后,滑移速度逐渐减小;对于同级配的固体颗粒,输送速度随着体积分数的增大而增大,当固体颗粒体积分数达到某一值后,输送速度增大的趋势减小;颗粒级配不同对体积分数的影响是不一样的,大颗粒级配占优势时输送速度大,小颗粒级配占优势时输送速度小。
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| 关 键 词： | 垂直管道 颗粒级配 输送速度 |
Influence of particles component properties on transporting speed in lifting pipeline |
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| ZHOU Zhi-jin,LIU Ai-jun,XIA Yi-min,TANG Da-sheng.Influence of particles component properties on transporting speed in lifting pipeline[J].Journal of Central South University:Science and Technology,2011(9). |
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| Authors: | ZHOU Zhi-jin LIU Ai-jun XIA Yi-min TANG Da-sheng |
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| Institution: | ZHOU Zhi-jin1,LIU Ai-jun1,XIA Yi-min2,TANG Da-sheng3 (1.College of Electromechanical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China,2.School of Mechanical and Electrical Engineering,Central South University,Changsha 410083,3.National Key Lab of Deep-sea Mineral Resources Development and Utilization,Changsha Research Institute of Mining and Metallurgy,Changsha 410012,China) |
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| Abstract: | The relationships between mineral component features and lifting speed were comprehensively studied.Theoretical analysis and experimental results show that the slip speed of single particle is its settling velocity.When the water flow speed continues to increase more than its settling velocity,the slip velocity slowly decreases.At the same level of particles gradation,the transport speed increases with the increase of the volume fraction.When it reaches a certain critical value,the growth rate slows down.Di... |
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| Keywords: | vertical pipes particles gradation transportation velocity |
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