Patent ID: 7854785

Claim:
Method for the recovery of the secondary metallurgy slag from a plant for the production of steel, said method comprising a cooling step of the secondary metallurgy slag, by means of the passage of air and/or other gas, a breakdown step comprising transformation of several phases present in the secondary metallurgy slag into powder, and a step of extracting the powder, wherein said breakdown step is accelerated by means of forced convection of air and/or another cooling fluid and/or another reaction gas and by means of mechanical movements of the secondary metallurgy slag that are carried out by means of overturning and vibrating support gratings of said secondary metallurgy slag, said overturning and vibrating support gratings being provided inside at least two closed adjoining metallic boxes which are connected in series and closed with movable containment partitions and which form a treatment module, and wherein said breakdown step is further accelerated by means of overturning said secondary metallurgy slag from the support grating of one of said at least two metallic boxes to the support grating of an adjoining metallic box which forms a treatment module.