铁水脱硫过程气泡平均直径的因次分析

Dimensional Analysis of Average Bubble Diameter in Desulfurization of Hot Metal

为了减小镁蒸气铁水脱硫过程中的气泡直径提高脱硫效率通过水模型实验研究了气泡平均直径与设备参数、操作条件之间的关系.通过高速照相机采集不同实验条件下的气泡分布状态图利用图像处理软件对所采集的图像进行处理得到气泡平均直径.对实验中气泡平均直径的主要影响因素进行分析由齐次原理和白金汉定律建立气泡平均直径与主要影响因素的关系式.根据实验数据求得拟合系数得出了气泡平均直径与实验条件之间的准数方程.

In order to decrease magnesium vapor bubble diameter in desulphurization of hot metal and to improve desulphurization efficiency, the effects of the equipment parameters and operating conditions on average bubble diameter were studied by a water model based experiment. The bubble dispersions under different experimental conditions were collected by a high-speed camera. The image analysis software was used to obtain the average bubble diameter under different experimental conditions and the major factors were analyzed by a water model based experiment. A relationship between the average bubble diameter and the major influencing factors was established, according to the homogeneous principle and Buckingham’s theorem. The relationship between the average bubble diameter and the experimental conditions can be obtained by fitting the related parameters with experimental data.