CAJ | 학술논문

气浮工艺中气泡的大小是衡量气泡制造技术的关键.研究了陶瓷微孔膜管产生微气泡的条件,并对两种不同材质的微孔膜管产生微气泡的结果进行了比较,从气泡形成机理上分析了影响气泡粒径分布的因素.实验采用静态显微摄像技术和图像分析系统时气泡粒径分布进行了表征.实验结果表明,利用陶瓷微孔膜管产生的气泡粒径主要集中在15～50 μm之间,平均粒径在25.7～44.2 μm之间.微孔膜管的孔径大小、表面性能,气体流量,剪切流流速,液体表面张力,黏度是影响气泡粒径分布的主要因素.
기부공예중기포적대소시형량기포제조기술적관건.연구료도자미공막관산생미기포적조건,병대량충불동재질적미공막관산생미기포적결과진행료비교,종기포형성궤리상분석료영향기포립경분포적인소.실험채용정태현미섭상기술화도상분석계통시기포립경분포진행료표정.실험결과표명,이용도자미공막관산생적기포립경주요집중재15～50 μm지간,평균립경재25.7～44.2 μm지간.미공막관적공경대소、표면성능,기체류량,전절류류속,액체표면장력,점도시영향기포립경분포적주요인소.
Bubble size is a key of evaluating the bubble generation in air floatation technology. This work is a study on the conditions of using ceramic microporous tube to produce microbubbles, the results of bubble forma-tion compared with the metal microporous membrane tube, and the factors effecting on the initial bubble size distribution are also analyzed from the mechanism of bubble formation. The bubble size distribution in this unit was measured by static micro- video and image analytics system.The experimental results showed that the microbubble diameter is ranged from 15 μm to 50 /urn, and mean diameter is between 25.7 μm to 44.2 μm, the initial bubble size distribution depend strongly on the pore size and facial characteristics of the microporous membrane tube,air flow rate,cross - flow rate, liquid surface tension and viscosity.