Pyrometallurgic process for the treatment of steelwork residues

A pyrometallurgic process for the treatment of post-steelwork residues, comprises the following phases: preparing a furnace ( 1 ) of the electric type, suitable for the introduction of the residues; preparing the residues, for example in a hopper with the possibility of mixing with additives and reaction elements; introducing the residues, together with suitable additives and chemical reagents, into the furnace ( 1 ); introducing directly into the slag, by means of lances ( 4 ), additives, flushing and reaction elements to correct the composition of the slag ( 7 ); reacting the residues with the slag ( 7 ) to obtain: a) separation of the liquid metallic phases which are added to the metal bath ( 6 ) to form a sellable liquid metal; b) separation of the metallic volatile elements in vapour phase which, when transferred to the free zone of the furnace ( 1 ) recombine with the oxygen for the formation of oxides and consequently of powder.