Low-pollution waste gas treatment environment-friendly device for steelmaking in steel mill

The invention provides a low-pollution waste gas treatment environment-friendly device for steelmaking in a steel mill, which comprises a waste gas treatment mechanism and a fan assembly, the waste gas treatment mechanism comprises an activated carbon treatment box, a plurality of carbon boxes are arranged in the activated carbon treatment box, and limiting assemblies are arranged on the inner sides of the plurality of adjacent carbon boxes; the limiting assembly comprises a supporting frame and two buffering columns, and the two buffering columns are installed on the two sides of the supporting frame. According to the waste gas treatment device, after a carbon box is placed in the activated carbon treatment box, a transverse plate in the limiting assembly is rotated, and the limiting assembly is arranged on the supporting frame; the buffer columns on the two sides of the transverse plate make contact with the carbon boxes on the two sides, the carbon boxes on the two sides can be connected with the buffer co