Comprehensive treatment device and treatment method for sintering flue gas of iron and steel plant

The invention discloses an iron and steel plant sintering flue gas comprehensive treatment device and a treatment method thereof, and relates to the technical field of sintering flue gas treatment.The iron and steel plant sintering flue gas comprehensive treatment device comprises a heat exchange box, a dust removal box and a purification box, a rectangular top cover is arranged at an opening of the top face of the heat exchange box, and a heat exchange assembly is installed on the bottom face of the rectangular top cover; a rotating disc is arranged on the upper middle portion in the dust removal box, four cloth bag sleeves are arranged on the top face of the rotating disc, dust removal cloth bags are fixedly arranged between bottom ports of the cloth bag sleeves and the corresponding linkage discs, and dust removal assemblies are installed in the dust removal cloth bags. A pair of conical filter covers is arranged in the purification box, a demisting purification disc is arranged on the upper middle portion