Secondary dust removal device for converter

The utility model provides a secondary dust removal device for a converter, which comprises a dust removal pipeline communicated with a converter body; the valve assembly is arranged between the dust removal pipeline and the converter body, and the flue gas circulation amount is controlled through the opening degree of the valve assembly; the fan is communicated with the dust removal pipeline, and smoke in the converter body is sucked into the dust removal pipeline through cooperation of the fan and the valve assembly; the driving control end is in butt joint with the fan and the valve so as to drive the fan to adjust the rotating speed and control the opening degree of the valve assembly. The problem that an existing dust removal device is inflexible in rotating speed control can be effectively solved. 本申请提供一种转炉二次除尘装置，包括：除尘管道，与转炉本体连通；阀门组件，设置于所述除尘管道与所述转炉本体之间，通过所述阀门组件的开度控制烟气流通量；风机，与所述除尘管道连通，通过所述风机与所述阀门组件配合将所述转炉本体中的烟气抽入所述除尘管道；驱动控制端，分别与所述风机和所述阀门对接，以驱动所述风机进行转速调节并控制所述阀门组件的开度。本申请可有效提高现有除尘装置转速控制不灵活的问题。