Fecha de publicación: 26/02/2021 Fuente: WIPO "circular economy" The utility model relates to the technical field of scrap steel recovery equipment, in particular to a scrap steel drying device which conveys scrap steel into a drying box and an air cooling box fromleft to right through a conveying mesh belt and conveys hot air into the drying box through an air heater to dry the scrap steel. Meanwhile, the dried hot air is pumped into the preheating box through the exhaust fan to preheat to-be-heated air, so that the utilization rate of heat is increased, the dried scrap steel enters the air cooling box to be cooled, and therefore the overall working efficiency is improved; the drying device comprises a base, a bottom column, a drying box, an air heater, a hot air pipe, an air distribution pipe and a drying air port, the device further comprises a leftsupport, a motor, a power roller, a right support, a driven roller, a conveying mesh belt, an exhaust fan, an exhaust pipe, an annular pipe, a connecting pipe, a bottom plate, a preheating box, a heat exchange pipe, a waste gas pipe, an air inlet pipe, an exhaust pipe, an air cooling box, an air cooler and an air cooling pipe.