Method for processing ladle slag including the following steps: - emptying the residue material present in the ladle on a bed consisting of recycled over-screened materials recovered from the slag; - at least partial solidification of the poured residue material; - introduction of the at least partially solidified material inside a confined environment consisting of a rotating drum; the method further including the following steps - slaking and disintegrating the residue material inside the confined environment consisting of the rotating drum cooling the induced material by means of an air flow; - separating the pulverulent part and metallic crusts of the residue material by means of rotation of said residue material within said confined environment consisting of the rotating drum, the method being characterized in that the slaked material comes out of calibrated holes located at the end part of said rotating drum, the metallic crusts remains inside said rotating drum - conveying the pulverulent part in a closed and controlled way with respect to the surrounding environment; - recovering the metallic crusts of the residue material to subsequently recycle them inside an EAF furnace; - separating the ferrous fraction having smaller size by means of magnetic separation to subsequently recycle it inside said EAF furnace; - separating by means of vibrating-screening the pieces having a bigger size than the injectable one to obtain the material for the recycled material bed and separation of the injectable material; - conveying the injectable material in a closed and controlled way with respect to the surrounding environment; - insufflating the injectable material in said EAF furnace; said method further including a storage phase of the injectable material before the phase relative to the insufflation of said material in said EAF furnace wherein said slaking and disintegrating step of the residue material inside the confined environment consisting of the rotating drum cooling the induced material by means of an air flow occurs by means of air sucked from the external environment by a fume hood through calibrated holes located at the end part of said rotating drum and by a possible cooling system of said rotating drum, said air flow sucked from the external environment recovers fine powders and avoids their dispersion in the environment. - emptying the residue material present in the ladle on a bed consisting of recycled over-screened materials recovered from the slag; - at least partial solidification of the poured residue material; - introduction of the at least partially solidified material inside a confined environment consisting of a rotating drum; the method further including the following steps - slaking and disintegrating the residue material inside the confined environment consisting of the rotating drum cooling the induced material by means of an air flow; - separating the pulverulent part and metallic crusts of the residue material by means of rotation of said residue material within said confined environment consisting of the rotating drum, the method being characterized in that the slaked material comes out of calibrated holes located at the end part of said rotating drum, the metallic crusts remains inside said rotating drum - conveying the pulverulent part in a closed and controlled way with respect to the surrounding environment; - recovering the metallic crusts of the residue material to subsequently recycle them inside an EAF furnace; - separating the ferrous fraction having smaller size by means of magnetic separation to subsequently recycle it inside said EAF furnace; - separating by means of vibrating-screening the pieces having a bigger size than the injectable one to obtain the material for the recycled material bed and separation of the injectable material; - conveying the injectable material in a closed and controlled way with respect to the surrounding environment; - insufflating the injectable material in said EAF furnace; said method further including a storage phase of the injectable material before the phase relative to the insufflation of said material in said EAF furnace wherein said slaking and disintegrating step of the residue material inside the confined environment consisting of the rotating drum cooling the induced material by means of an air flow occurs by means of air sucked from the external environment by a fume hood through calibrated holes located at the end part of said rotating drum and by a possible cooling system of said rotating drum, said air flow sucked from the external environment recovers fine powders and avoids their dispersion in the environment.