电炉炼钢各工况的外排烟气量波动非常大,通常电炉除尘系统的设计参数按烟气量最大时考虑,这就导致系统设备庞大,并不能全程发挥有效作用,浪费了大量电力,并使运行成本增加,本文根据某钢厂电炉烟尘治理的改造实例,其采用差速集烟罩技术,为中小电炉的烟尘治理开创了一个新途径。 Electric furnace steelmaking effluent gas volume fluctuations in various conditions is very large, usually the design parameters of the electric furnace dust removal system to consider the maximum amount of flue gas, which led to the system equipment is huge, and can not play a full role in the entire process, wasting a lot of electricity, and So that the operating costs increase. Based on the example of the remodeling of the electric furnace smoke and dust control in a steel mill, this paper introduces a new approach to the smoke and dust control of medium and small electric furnaces by adopting the differential smoke hood technology.