METHOD OF PROCESSING FINAL SLAG Russian patent published in 2009 - IPC C22B7/04 C04B7/19 

FIELD: metallurgy.

SUBSTANCE: according to method at each stage of crushing there is performed air separation by means of transfer of material in air flow facilitating extraction of least dense non-metallic component of slag of dust-like fraction (-0.08mm); further there is performed magnetic separation of oversize slag or manual selection of metal from oversize slag, and after final stage of crumbling before air separation there is carried out selective crumbling of non-metallic component of slag; also in the process of treatment transfer of all non-metallic component of processed slag into dust-like fraction (-0.08mm) is executed in stages; dust-like fraction is extracted from slag with air flow at each stage. The invention facilitates extraction of practically all shot irons from processed material; it also facilitates production of well dried, cleaned from metal and crumbled raw additive for Portland cement.

EFFECT: improved efficiency of processing slag dumps.

5 cl, 1 ex