中文摘要：

在钢包精炼炉旁配备了电磁搅拌系统,并利用多普勒超声波测速仪对线性电磁搅拌方式下金属液与模拟熔渣的界面流速分布状况进行了测定及分析;确定了卷渣临界流速等重要冶金参数,并根据相似原理对实际钢包精炼炉的对应参数进行了分析.研究发现,电磁搅拌可以有效促进金属液的内部流动,从而显著改善金属液内部的动力学条件,是提高钢包精炼效率的有效手段.在生产中,可以卷渣临界流速为依据,针对不同的精炼工艺要求采用不同的电磁搅拌强度.

英文摘要：

A nearby electromagnetic stirring system was provided for a ladle refining furnace,where the velocity distribution of liquid metal on the interface between simulated slag and liquid metal was measured and analyzed with Doppler ultrasonic velocimetry so as to determine the important metallurgical parameters such as the critical velocity of slag entrapment in furnace,as well as the relevant parameters of actual ladle furnace.The results showed that the electromagnetic stirring can effectively enhance the internal flow of liquid metal so as to improve its internal kinetic conditions significantly.The electromagnetic stirring is therefore an efficient means to improve the efficiency of ladle refining.Different electromagnetic stirring intensity should be introduced to meet different refining process requirements for commercial production in accordance to the determined critical velocity of slag entrapment.