气举技术在矿物开采中的实验研究  

Experimental Study on an Air-lift in Mining

作　　者：唐川林[1] 蔡书鹏[1] 胡东[1] 杨林[2] 

机构地区：[1]湖南工业大学水射流研究所,湖南株洲412008 [2]重庆交通大学机电学院,重庆400074

出　　处：《应用基础与工程科学学报》2009年第3期374-379,共6页Journal of Basic Science and Engineering

基　　金：湖南省教育厅重点项目(04A067);国家自然科学基金项目(50374087)

摘　　要：选用普通河沙作为实验颗粒,在实验室内模拟气举采矿,研究影响气举工作特性的关键因素.在浸入率相同的情况下通过改变喷嘴布置方式来测量提升管出口端排液量、排沙量和提升效率.实验结果表明,出现最佳工况所对应的气体流量值为Qg∈(36,40)m3/h;气举结构参数的变化对气举提升性能有显著影响,采用5个喷嘴时气举的工作特性最好,而采用不同气流喷射角度时,对应于α切=10°其气举工作特性在气量值约为Qg=37m3/h时达到最佳.In order to investigate the key factors on the discharged volume flow rate of liquid, discharged performance of an air-lift in mining, The mass flow rate of particles, and lifting efficiency are measured under the same submergence ratios by changing the style of air injection in air-lift device. The experimental results show that it gives the best performance of the air-lift when the volume flow rate of air occurs at Qg ∈ （36,40） m3/h. The style of air injection in airlift device has a great effect on the performance of the airlift, the arrangement with five injection nozzles shows the best performance. In addition, the air-lift lifting efficiency obtains great value when the angle of the nozzle placed along the tangential direction of pipe wall is equal to 10° at a given volume flow rate of air Qa =37m3/h.

关 键 词：气举 进气方式 排液量 排沙量 效率 

分 类 号：TD219[矿业工程—矿井建设]