SYSTEMS AND METHODS FOR RECYCLING STEELMAKING CONVERTER EXHAUST RESIDUE AND PRODUCTS MADE THEREBY Russian patent published in 2016 - IPC C21C5/38 C21C5/40 C22B1/24 C22B7/02 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and can be used for processing sludge from a fume scrubbing system of a steelmaking converter and articles made therefrom. System includes equipment for separation and processing of sludge for separation of substantially microspheres metallic iron from material not related to metal iron, wherein said separation equipment comprises an ultrasonic cleaner for removal of surface of small fractions, associated with microspheres metallic iron using at least two different excitation frequencies of acoustic cavitation for creation of metal microspheres with treated surface, and moulding equipment for arrangement of microspheres of metallic iron with treated surface, separated by said equipment for separation, and moulding using same lumpy material substantially consisting of microspheres of metallic iron. Lumpy material is used as a charge material in melting steel in steelmaking converter or arc furnace.

EFFECT: invention enables to use briquettes with high content of metal iron in steelmaking charge material for oxygen converter or arc furnace, and water used in system, which is returned and reused in system, making system harmless to environment, as well as use of sludge in form of pellets and/or agglomerate for production of cast iron.

24 cl, 16 dwg