Abstract: The influence of floatation velocity ( Stokes velocity, 0.1-0.5 m/s) on separation and removal of 50-200 μm inclusions is studied by established, a moving model of inclusions at steel-slag interface and in liquid metal and slag layer continuous zone near the interface. Study results show that with increasing floatation velocity, there is no obvious influence on removal time of less than 50 μm inclusions at steel-slag interface, but the separation and removal time of 50 μm to 150 μm inclusions increases while the separation time of ≥150 μm inclusions reduces, as for instance, for 150 μm inclusions ,with the floatation velocity increasing from Stokes velocity to 0.5 m/s, the inclusions separation time reduces from 260 x 10^-5 s to 6 x 10^-5 s.

Key words: Floatation Velocity, Steel-Slag Interface, Size of Inclusions, Removal

摘要： 通过建立夹杂物在钢渣界面及其附近钢液和渣层连续区域的运动模型,研究了上浮速度(Stokes速度,0.1~0.5m/s)对50~200μm夹杂物分离去除的影响。研究结果表明,上浮速度的提高对50μm以下夹杂物在钢渣界面的分离时间影响不大,而会使50μm至150μm的夹杂物分离时间变长,使≥150μm的夹杂物分离时间缩短,对于150μm的夹杂物上浮速度由Stokes速度提高到0.5m/s时,夹杂物分离时间由260×10^-5s缩短到6×10^-5s。

关键词: 上浮速度, 钢渣界面, 夹杂物尺寸, 去除