UNIT FOR COMBUSTION OF GAS ESCAPING ELECTRIC ARC FURNACE, FOR PRELIMINARY HEATING METAL SCRAP ENTERING SAID FURNACE AND PROCEDURE RELATED TO UNIT Russian patent published in 2011 - IPC F27B3/18 F27D13/00 C21C5/52 

FIELD: metallurgy.

SUBSTANCE: installation for production of steel consists of unit for preliminary heating charge and metal scrap entering electric arc furnace. The said unit consists of a section for introduction of maintaining combustion substance into a chamber of preliminary heating or in a loading tunnel for charge and metal scrap. Additionally, the unit consists of a packing section to prevent un-controlled air entering the tunnel, a section of heating and a section of loading charge and metal scrap into the furnace. The said device for introduction of maintaining combustion substance has at least one controlled opening positioned in the loading tunnel. Also, the device consists of an element or a row of elements of mechanical packing type, which does not make autonomous transfers. It is located in inlet section or in the section of introduction of charge material and metal into a loading tunnel or into the chamber of preliminary heating.

EFFECT: reduced uncontrolled introduction of maintaining combustion substance into loading tunnel and exhaust of duct into environment.

10 cl, 3 dwg