大喷嘴充气器工作参数对充气性能影响的试验研究  

Experimental Research on the Effect of Different Operating Parameters on Bi~ Nozzle Spar^er Aeratin~ Performance

作　　者：吴峰 史帅星 董干国 

机构地区：[1]北京市高效节能矿冶装备工程技术研究中心,矿物加工科学与技术国家重点实验室,北矿机电科技有限责任公司,北京矿冶研究总院,北京100160

出　　处：《有色金属（选矿部分）》2017年第B11期156-159,共4页Nonferrous Metals（Mineral Processing Section）

基　　金：国家自然科学基金资助项目（51474032）

摘　　要：简要介绍了充气器结构组成及工作原理，重点研究了充气器用大喷嘴在不同工作参数即充气压力和浸没深度条件下的气流喷射长度、末端扩散宽度、气泡大小与喷气流量的变化规律。结果表明，在同一浸没深度条件下，随着充气压力的增大，除气泡直径外，其它三个性能参数都相应增大；在同一压力条件下，随着喷嘴浸没深度的增加，喷气流量基本没有变化，气流喷射长度、气流末端扩散宽度和形成的气泡却逐渐减小。本文的研究对大喷嘴充气器在实际应用中工作参数的选取具有重要的意义和应用价值。In this paper, the structure and working principle of the sparger are briefly introduced, and the variation rules of the air injection length, airflow tip diffusion width, the size of the bubble and the jetting outflow of the big nozzle of sparger are studied emphatically under different operating parameters which are the aeration pressure and immersion depth. It is shown that the other three performance parameters increase with the increase of the aeration pressure under the same immersion depth. Under the same pressure condition, with the increase of the immersion depth of nozzle, the jetting outflow basically unchanges, but the air injection length, airflow tip diffusion and size of the bubble gradually decrease. The research of this paper is of great significance and application value for the selection of working parameters of big nozzle sparger in practical application.

关 键 词：大喷嘴充气器 工作参数 充气性能 

分 类 号：TD456[矿业工程—矿山机电]