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|1. (WO2018021248) AUXILIARY BURNER FOR ELECTRIC FURNACE|
|Applicants:||JFE STEEL CORPORATION
CHUGAI RO CO., LTD.
|Title:||AUXILIARY BURNER FOR ELECTRIC FURNACE|
Provided is an auxiliary burner for an electric furnace, the burner being capable of increasing and homogenizing the heating effect of iron scrap by suitably and efficiently burning solid fuel along with gas fuel. This auxiliary burner 100 for an electric furnace comprises, in the stated order from the center side, a solid fuel injection tube 1, a gas fuel injection tube 2, and a combustion-supporting gas injection tube 3, all arranged coaxially, and is characterized in that: a flow path 30 of the combustion-supporting gas injection tube 3 is provided with a plurality of turning blades 4 for turning the combustion-supporting gas, and a flow path 20 of the gas fuel injection tube 2 is provided with a plurality of turning blades 5 for turning the gas fuel; and the angle θ1 of the turning blades 4 and the angle θ2 of the turning blades 5 satisfy the relationship θ1<θ2.