Study of High Efficiency Refining Reactor through Mixing and Separation Character of Vortex Stirrer

全球环境保护、能源和资源节约以及钢铁生产成本和质量是钢铁工业可持续发展的重要问题，因此对炼钢工艺创新的需求非常强烈。发明了一种不输入人工能量，仅利用引力能的涡流搅拌器。为了有效地产生旋流并保持稳定，对汞或水在漏斗中的旋流进行了观察，并对漏斗角度和润湿性对旋流的影响进行了考察和研究。结果表明：通过涡流效应，精炼试剂可以完全被吸进铁水中。切向速度随距自由表面径向距离的增加呈反比减小。当漏斗与水平面夹角为30°时，旋流受漏斗湿润能力的影响。当漏斗与液体之间的润湿性较差时，由于液体在漏斗内表面的滑动，无法获得稳定的旋流。本文还对铁水的润湿性对旋流的影响进行了模型计算。

The is a strong demand for innovation of steel-making processes, because the preservation of global-environment, energy and resource saving as well as productivity cost and quality on steel are important issues for sustainable-development of steel industry. Without imparting artificial energy, vortex stirrer using only a gravitational energy is invented. In order to generate the swirling flow effectively and to maintain stably, the swirling flow of mercury or water in the funnel has been observed, and the effect of the funnel angle and wettability on the swirling flow has been investigated, and studied. Obtained results are as follows :The refining reagents can be completely sucked into the hot metal through the vortex effect.The tangential velocity decreases inversely with increasing radially the distance from the free surface.When the funnel angle is 30° against the horizontal surface, the swirling flow is affected by the wet ability of the funnel.When the wettability between the funnel and liquid is poor, the stable swirling flow cannot be obtained because of the slip of the liquid on the inner-surface of the funnel.A model calculation for molten iron has also been conducted on the effect of the wettability on the swirling flow.