渣罐底吹熔池表面突起特性的模拟研究

Sinulation Study on Spout Characteristics in Bottom Blowing Slag Ladle

基于“选择性析出技术”,向渣罐内吹入空气氧化含钛高炉渣,以实现钛的选择性富集。渣罐内熔池的表面突起高度和宽度对于渣罐内自由空间的设计存在重要影响。通过摄像法测定了粘度、气体流量对底吹渣罐水模型表面突起高度和宽度的影响。结果表明:液面突起的形状服从高斯分布;液面突起高度随底吹气体流量的增大而变大,而基本不受熔池黏度变化的影响;液面突起宽度随气体流量和溶液黏度的增大而变大,但主要受气体流量的影响。通过对实验结果的分析讨论,得出了水模型溶液表面突起高度和突起宽度的经验关系方程式。

Based on the technology of selective precipitation, titanium bearing molten slag in ladle is supposed to be oxidized by air for achieving selective enrichment of titanium component. The height and width of spouts surface have great effect on the design of slag ladle free space. In the present study, a water model of slag ladle was used with a photographic technique to determine the effect of viscosity and bottom stirring gas flow rate on surface spout characteristics of the solution. As the result, the spout shapes were found to be Gaussian. The spout heights increased with the gas flow rate increasing, while there was not obvious effect of the viscosity on it. The spout widths increased with the increasing of gas flow rate and viscosity, but were affected mainly by flow rate. Based on the experimental results and analysis, empirical equations were developed for the height and width.