AFTERBURNING OF COMBUSTIBLE GAS IN ARC FURNACE Russian patent published in 2014 - IPC C21C5/52 

FIELD: metallurgy.

SUBSTANCE: invention relates to electrometallurgy and can be used at electrosmelting of sintered pellets at arc steel smelting furnaces with combustible gas afterburning above the pool nearby the zone of off-gas suction form the plant. In compliance with this invention, swirled oxygen flow is fed into furnace working space, afterburning of combustible gases formed above the slag bath, feed of released heat resulted from combustible gas afterburning to slag bath and suction of off-gas flow. Off-gas is sucked off via pipe fitted in the furnace roof. Swirled oxygen flow is fed towards combustible gas flow with the help of movable tuyere arranged in axis of said pipe. Afterburning is performed between pipe inlet, rood, walls and slag bath to produce the afterburning tongue directed at 30-60 degrees to slag bath surface.

EFFECT: intensified steel smelting, higher performances of the process.

6 cl, 1 dwg