ABSTRACT

Three types of impellers are developed to improve reagent efficiency in the desulfurization process of hot metal by kanbara reactor stirring method. The movement and dispersion behavior of particles are investigated using the CFD technology. The flow structure, particle volume fraction distribution and mixing time are taken as the characteristics to describe the entrainment ability and mixing ability of the impellers. The results show that the square center impeller (impeller B) improves the flow structure of the molten iron, and makes the volume fraction distribution of the particles much better than that of the traditional impeller (impeller A), the mixing time is the shortest among the three impellers under the same operating parameters. The blades with downward angle (impeller C and impeller D) improve the mixing effect of the region below the impeller, and the impeller C is more sensitive to the change of rotation speed.

摘要

开发了三种类型的叶轮，以提高kanbara反应器搅拌法铁水脱硫过程中的试剂效率。使用 CFD 技术研究粒子的运动和分散行为。以流动结构、颗粒体积分数分布和混合时间为特征来描述叶轮的夹带能力和混合能力。结果表明，方形中心叶轮（叶轮B）改善了铁水的流动结构，使颗粒的体积分数分布明显优于传统叶轮（叶轮A），混合时间最短。三个叶轮在相同的运行参数下。