FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy and can be used in metallurgical complex for steel production. System has a unit for melting and/or reduction of metals and a gas generating plant which generates exported gas, wherein carbon dioxide and/or water contained in exported gas in a separation device is at least partially removed from exported gas, wherein obtained gas before feeding into said plant is heated in a furnace device by burning furnace gas, furnace gas is fed into furnace device in a volume, which is more than required for heating obtained gas. Heat energy obtained when burning furnace gas is used inside furnace device for production of steam and/or relative to gas flow of combustion gas generated during combustion of furnace gas, and after furnace device for heating and/or drying raw materials, supplied to gas generating plant and/or installation for melting and/or reduction of metals.
EFFECT: invention allows effective use of thermal energy produced in a metallurgical complex, as well as combustible gases.
18 cl, 3 dwg
