METHOD FOR PROCESSING METALLIC WASTE MATERIALS OF CAST PERMANENT MAGNET MANUFACTURE Russian patent published in 2008 - IPC C22B7/00 

FIELD: metallurgy, namely processing of industrial waste materials.

SUBSTANCE: method comprises steps of sorting waste materials by kinds of alloys; disintegrating waste material till predetermined size; treating them in tumbling drum for removing dirt, casting process pickup and impurities; melting waste materials in open induction furnace at using refining flux; casting melt to metallic ingot molds and performing chemical analysis of produced alloy; using refining flux containing 10 - 50 % of fired waste matters of grinding cast permanent magnets; before starting melting process, loading such flux onto bottom of crucible of melting furnace together with large lumps of waste material; after complete melting of charge realizing high-temperature treatment of melt at temperature 1650 - 1750°C; soaking at such temperature for 1 - 5 min.

EFFECT: possibility for processing all kinds of metallic waste materials of cast permanent magnet production at producing alloy used at melting preset-composition alloy for producing cast permanent magnets including important designation magnets.

5 cl, 7 ex, 6 tbl