PROCESSING METHOD OF HIGH-ALUMINOUS SLAGS OF ALUMINOTHERMIC PRODUCTION OF FERROALLOYS Russian patent published in 2014 - IPC C22B7/04 B03B9/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to mining, metallurgical and building industries and can be used at utilisation of slags of ferroalloy industry. A slag crushing method is implemented till the fraction of -10.0+0.0 mm with its further screening into three fractions: -10.0+1.0 mm, -1.0+0.315 mm and -0.315+0.0 mm; with that, fraction of -10.0+1.0 mm is subject to additional crushing and returned for screening, then each of two fractions: -1.0+0.315 mm and -0.315+0.0 mm is separately dried, and then two separated flows are first subject to electric separation with separation into conducting and non-conducting fractions; then, each of the obtained fractions is subject subsequently first to low-magnetic, and then to high-magnetic separation with extraction of a high-magnetic fraction in the form of iron scrap and large and small fractions of a metal phase of ferroalloys and extraction of non-magnetic non-conducting fraction in the form of a high-aluminous concentrate.

EFFECT: invention allows obtaining 4.42% as to the yield of metal phase concentrate with content of Ti 34.4% and Fe 46.4%, which meets GOST requirements as to all components for powder of ferrotitanium of FTi35s5 grade.

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