The present invention relates to a
scrap steel preheating device and a preheating method, belonging to the technical field of iron and steel
metallurgy. The
scrap steel preheating device comprises a
ladle with an opening at the top and a
ladle cover arranged at the opening of the
ladle. The ladle cover is provided with a burner that can be inserted into the ladle, and the burner is connected with a fuel pipeline, an
oxygen pipeline and an air pipeline, so that the burner can use air and / or
oxygen for
combustion. The ladle cover is also provided with a
smoke exhaust pipeline, and the
smoke exhaust pipeline is provided with a
smoke temperature detection device. When the
scrap steel is preheated, the scrap steel to be preheated is added to the ladle in multiple times, and after each addition of the scrap steel, the scrap steel is preheated to a set temperature through the burner. The present invention realizes dual
combustion of the burner by connecting the burner with the fuel pipeline, the
oxygen pipeline and the air pipeline; by adopting different heating methods in different heating stages, not only the fuel is saved to the maximum extent, but also the heating speed is improved, and the cost of scrap steel preheating is reduced.