METHOD OF RECYCLING OF STEELMAKING SLAG Russian patent published in 2009 - IPC C22B7/04 C21C5/54 

FIELD: metallurgy.

SUBSTANCE: invention relates to multipurpose use of the raw material in ferrous metallurgy, in particular to the methods of recycling of steelmaking slag. The method involves extraction of large pieces of scrap metal from the steelmaking slag, screening and seperation of nonmagnetic slag with size of 0-50 mm, sieving of the nonmagnetic slag with size of 0-5 mm, crushing of the oversised material followed by screening with size of 0-5 mm and pneumatic classification seperating the pieces by their sizes: large pieces are 5-0.5 mm, small pieces are 0.5-0.16 mm and dust is 0.16-0 mm followed by pneumatic classification of the large and small pieces and their dry magnetic seperation.

EFFECT: possibility of a more efficient extraction of metal from the steelmaking slag and the extracted metallic products are the raw material for agglomeration and metallurgy industry and the nonmagnetic part (small pieces) is the raw material for production of abrasive powder.

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