METHOD OF METAL SCRAP HEATING Russian patent published in 2015 - IPC C22B1/248 

FIELD: metallurgy.

SUBSTANCE: invention relates to ferrous metallurgy, namely, to steel production in electric arc furnace. Method of metal scrap heating for steel production in the arc furnace includes creation of the work body for the metal scrap heating, and its recirculation by combustion of products of the metal scrap drying and scrap organic compounds decomposition taken from top of the scrap heating chamber with addition of the required volume of natural gas and air for combustion, supply of the produced work body back to bottom part of the scrap heating chamber. Surplus of gases generated during the work body production and its recirculation are discharged to atmosphere, at that additionally there is catalytic thermal treatment for the surplus gases neutralisation by heating to temperature of the catalytic thermal treatment by means of combustion of the natural gas supplied with the appropriate air quantity, and heat exchange of the neutralised surplus gases with air supplied for combustion to produce the work body, at that the neutralised surplus gases is cooled prior to discharge to the atmosphere.

EFFECT: neutralisation of the organic compounds generated during heating of the scrap with organic inclusions, fuel saving, improved labour safety, exclusion of vapour explosions in the furnace.

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