Method of producing low nitrogen steel

Details Method of producing low nitrogen steel Method of producing low nitrogen steel

C - Chemistry, Metallurgy

21

C

53/93

C21C 1/00 (2006.01) C21C 5/34 (2006.01)

Patent

CA 1043571

ABSTRACT OF THE DISCLOSURE In bottom blown processes for the production of low carbon steels (i.e. less than 0.2% C), inert gas flushing employed at an intermediate point of the blow, provides more rapid and more efficient removal of N2. Thus, inert gas flushing is initiated at a point when the carbon content of the melt is in excess of 0.3%, and preferably in excess of 0.5%. When N2 is removed to a desired extent, full scale oxygen blowing is resumed to achieve the final degree of decarburization.

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