Process for decarburizing alloy melts

Details Process for decarburizing alloy melts Process for decarburizing alloy melts

C - Chemistry, Metallurgy

22

B

53/361

C22B 9/05 (2006.01) C21C 5/00 (2006.01) C21C 5/35 (2006.01) C21C 5/56 (2006.01)

Patent

CA 1223744

ABSTRACT The present invention relates to a two step process for decarburization of a shallow melt. First, the carbon content of the melt is reduced to an intermediate value in the range of about 0.3 to 0.1 wt.% carbon by concurrently blowing an oxygen enriched gas onto the surface of the melt at a subsonic velocity and injecting an inert gas below the melt surface to stir the melt. Second, the carbon content of the melt is further reduced to a final value of above 0.001 wt.% carbon by injecting a mixture of oxygen enriched gas and inert gas below the surface of the melt for both decarburizing and stirring the melt.

456601

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