Method for smelting low nitrogen steel using electric furnace

Abstract

Disclosed is a method for smelting low nitrogen steel by using an electric furnace. The smelting is performed using a dual-shell electric furnace, The dual-shell electric furnace has two furnace shells. An arc power system of the dual-shell electric furnace is used for alternatively electric heating on the two furnace shells, wherein when one of the two furnace shells is subjected to electric heating, feeding, sealing of a molten pool and blowing of a combustion medium and oxygen are sequentially carried out in the other furnace shell to start smelting. When the temperature of molten steel in the furnace shell subjected to electric heating reaches a target temperature, electric heating starts to be carried out on the other furnace shell. The method for efficiently smelting the low nitrogen steel by using the electric furnace of the disclosure, not only can shorten the smelting period and improve the throughput of a production line of an electric furnace, but also smelt low nitrogen steel to satisfy the requirements of the market on high-end steel. in addition, the method for efficiently smelting the low nitrogen steel by using the electric furnace of the disclosure can reduce the discharge of dust and smoke, thereby protecting the environment.

Dependencies are inferred from the claim text.