C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
53/90
C21C 7/064 (2006.01) C21C 5/35 (2006.01) C21C 5/36 (2006.01) C21C 1/04 (2006.01)
Patent
CA 1203986
PRODUCTION OF ULTRA-LOW PHOSPHORUS STEEL ABSTRACT OF THE DISCLOSURE A process for producing an ultra-low phosphorus steel containing 0.010% or less of phosphorus is disclosed, which comprises charging a desiliconized pig iron into a top- and bottom-blowing oxygen converter, introducing a slag-forming agent in a powdered form onto the molten iron together with the top-blowing oxygen and introducing a bottom-blowing gas selected from the group consisting of an inert gas, nitrogen gas, oxygen gas, carbon monoxide gas, carbon dioxide gas and mixtures thereof during the oxygen top-blowing or during both the oxygen top-blowing and the subsequent tapping.
428865
Anezaki Shoji
Aoki Takeo
Hirata Takeyuki
Masuda Seiichi
Matsuo Tohru
Osler Hoskin & Harcourt Llp
Sumitomo Metal Industries Ltd.
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