Steel making by converter
AssigneeNippon Kokan Kabushiki Kaisha
InventorsShigeyuki Ono, Akichika Ozeki, Eiichi Sakamoto, Kiyomi Taguchi, Yoshio Miyashita
Life of this patent
Estimating the term…
Abstract
Steel making by a converter comprises blowing oxygen onto the surface of molten steel held in the converter and blowing agitating gases of 1/3 to 1/3000 of the amount of said oxygen thereinto from tuyeres provided at bottom of the converter, which number from 1 to 30 and are from 2 to 30 mm.phi. in inside diameter, thereby to effectively agitate the molten steel and make blowing reaction stabilized for purposes of increasing production and improving quality of the steel.
Claims10
A steel making process comprising blowing oxygen onto the surface of molten steel held in a converter and blowing agitating gases of 1/3 to 1/3000 of the amount of said oxygen thereinto through from 1 to 30 tuyeres provided at a bottom of the converter, each of said tuyeres having an inside diameter of from 2 to 300 mm.phi..
Dependencies are inferred from the claim text.