LI Yan-hua. SU Zhi-jian
,
HE Ji-cheng
钢铁研究学报(英文版)
Against the background of actual metallurgical equipment with linear electromagnetic stirring system，the study measures and analyzes the internal flow, the free surface shape and level fluctuation of liquid metal exposed to linear electromagnetic stirring with Doppler ultrasound velocimetry and laser liquid level apparatus respectively, and then desulphurization process with or without imposition of linear electromagnetic stirring is studied experimentally. The change of sulfur content of hot metal with respect to time is obtained, and the volume mass transfer coefficients corresponding to different stirring current is determined finally. The result shows that linear electromagnetic stirring can not only effectively promote the internal flow, but also effectively increase the level fluctuation so as to significantly improve the kinetic condition of liquid metal. The internal flow and level fluctuation of the liquid metal would increase in line with the increase of electromagnetic stirring intensity. The desulphurization experiments show that the linear electromagnetic stirring can significantly promote the desulphurization process of hot metal, and the technology has wide application prospect in promoting various slag-metal reaction.
关键词:
linear electromagnetic stirring;Doppler ultrasound velocimetry;internal flow;level fluctuation;interfacial reaction
