Method and apparatus for manufacturing medium or low carbon...

Details Method and apparatus for manufacturing medium or low carbon... Method and apparatus for manufacturing medium or low carbon...

C - Chemistry, Metallurgy

22

C

C22C 35/00 (2006.01) C21C 5/00 (2006.01) C21C 5/35 (2006.01) C21C 5/46 (2006.01) C21C 7/04 (2006.01)

Patent

CA 2132337

FILE PIN IN THIS TEXT TRANSLATION ABSTRACT OF THE DISCLOSURE An object of the present invention is to provide method and apparatus for manufacturing medium or low carbon ferromanganese at reduced running costs. In order to achieve the above object, the present invention resides in charging molten high carbon ferromanganese into a refining vessel of a top blowing type, and blowing oxygen gas on the surface of the molten high carbon ferromanganese from above and injecting a mixed gas having the following composition into the molten high carbon ferromanganese from bottom. The mixed gas composition comprises 65 - 100% of CO, 0 - 25% of CO2 and 0 - 10% of N2. In a case, argon gas is used as the bottom-blown gas.

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