C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
53/91
C21C 5/34 (2006.01) C21C 5/35 (2006.01)
Patent
CA 1157660
ABSTRACT OF THE DISCLOSURE A method for producing steel having a low hydrogen content, in an oxygen blast converter, with nozzles arranged below the surface of the bath in the refractory brockwork, the said nozzles consisting of concentric tubes and serving to introduce oxygen shielded in a protective medium, and with an oxygen lance projecting into the mouth of the converter, with a view to achieving the lowest possible hydrogen content of about 2 ppm at the most. At least half of the total amount of oxygen is blown onto the bath whereas, towards the end of the refining period, the nozzles located below the surface of the bath are operated briefly with a hydrogen-free gas. This method is more economical than those known till now.
357665
Eisenwerk-Gesellschaft Maximilianshutte M.b.h.
Swabey Ogilvy Renault
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