PROCESSING METHOD OF DISINTEGRATING SLAG Russian patent published in 2009 - IPC C22B7/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to ferrous metallurgy field, particularly, it relates to processing of disintegrating slag. Processing of disintegrating slag includes preliminary and final cooling, screening, dedusting and magnetic separation of decay daughter. Preliminary cooling and screening of disintegrating slag is implemented on screening grating with cells sizes from 80×80 mm till 300×300 mm with vibration action of frequency 3000-6000 vibration per minute with driving force from 2.5 till 9.0 kN. Final cooling and dedusting are implemented simultaneously in revolve drum with linear velocity of the internal surface of shell ring 0.2-0.5 m/s and rate of airflow in cavity of drum 0.6-4.0 m/s. Additionally powdered and dust-free decay products of slug is subject to magnetic separation separately.

EFFECT: reduction of cooling duration and slag disintegration, reduction of metal loss with lump and powdered slag, increasing of amount of metal production and products from slag mineral constituents.

2 cl, 1 dwg, 3 tbl