Title: Method of simultaneously controlling temperature and carbon content of molten steel at the end-point in oxygen top-blown converter

Abstract: In the refining of steel by an oxygen topblown converter, the temperature and carbon content of molten steel are simultaneously measured by a sensor at a predetermined time before the end point, whereby in accordance with the difference between a calculated carbon content at the endpoint obtained by processing the measured values and a target carbon content at the end-point, the oxygen quantity to be blown in at the end-point and the coolant requirement or the pattern of soft-blow are computed to simultaneously control the temperature and carbon content of the molten steel at the end-point.

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Inventors: Sakamoto, Eiichi (Kamakura, JA)
Kubo, Masanobu (Yokohama, JA)
Yasui, Takashi (Kamakura, JA)
Suzuki, Katsuya (Yokohama, JA)
Tachibana, Katsuhiko (Kamakura, JA)

Application Number: 598756
Filing Date: 1975-07-25
Publication_date: 1977-08-23
Assignee: Nippon Kokan Kabushiki Kaisha (Tokyo, JA)
Primary Class(es): 75/382 266/80
Other Classes:
US Patent Ref:

3871871

Mar, 1975

Denis

75/60.

Other Refs: 44,4628,12665,803

Apr, 1970	AU
Jan, 1968	AU
Jan, 1971	AU

Primary Examiner: Rosenberg, Peter D.
Assistant Examiner:
Attorney: Flynn & Frishauf