钛渣连续熔炼渣铁界层凝固机理及控制探讨

探讨了高功率全密闭直流电炉连续熔炼钛渣过程中渣铁界层的凝固机理及控制措施。分析表明，渣铁界层钛渣中夹杂有少量金属铁，且越接近界面铁量越大，渣铁温差、界层钛渣TiO2还原程度较高等是造成界层易于凝固的重要原因；通过调整渣层厚度、熔炼温度、还原程度等可对凝固范围进行有效控制。

Discussion on Freezing Mechanism and Control Measurements about the Interface Layer between Slag and Iron Bath during Titanium Slag Continue Smelting

The freezing mechanism and control measurements about the interface layer between slag and iron bath dur- ing titanium slag continue smelting with high power totally-enclosed DC furnace have been discussed. Analysis shows that a few iron drops mix with the titanium slag at the interface layer, and the nearer to the surface the more. Due to the temperature difference between titanium slag and iron, as well as the deeper reduction of TiO2 , titanium slag at the interface layer freezes easily. So the freezing range can be effectively controlled by adjusting the thickness of titanium slag layer, smelting temperature and reduction degree.