【摘要】 在钢包喷吹工艺中,研究卷渣现象对于了解精炼效果具有重要意义。由于直接研究这一现象有许多困难,这里用油/水分层流模拟渣/钢分层流,用卷油现象模拟卷渣现象。实验室中用二维激光测速仪测出了油/水界面的临界速度。通过分层流基本方程的数值计算,对卷入现象进行了理论分析。根据相似理论,由油/水界面的临界速度估算了渣/钢界面的临界速度。更多还原

【Abstract】 It is of great importance in the evaluation of refining results to study the entrapment phenomenon of slag drops into steel bath in the ladle stirred by gas. There are a lot of difficulties to study this phenomenon directly. The slag-steel stratified flow was simulated by the oil-water stratified flow, and the entrapment phenomencn at slag-steel interface was simulated at the oil-water interface here. The critical velocity at the interface of oil-water system was measured by two dimensional laser Doppler Anemometry in the laboratory. The theoretical analysis of entrapment phenomenon has been made numerically by the basic equations for stratified flow. According to the prineiple of simiiitude, the critical velocity at the slag-steel interface has been evaluated from the critical velocity at the oil-water interface.更多还原