Refining ferroalloys

Details Refining ferroalloys Refining ferroalloys

C - Chemistry, Metallurgy

22

C

C22C 33/04 (2006.01) C21C 5/00 (2006.01) C21C 5/35 (2006.01) C21C 5/46 (2006.01) C21C 5/52 (2006.01) C21C 7/00 (2006.01) C22C 35/00 (2006.01)

Patent

CA 2488061

A method of refining a ferroalloy includes the step of blowing molecular oxygen or a gas mixture including molecular oxygen into a melt of the ferroalloy. A metallurgically acceptable particulate material is introduced from above into the melt. The particulate material is carried into the melt in a first supersonic gas jet which travels to the melt shrouded by a second gas jet.

L'invention concerne un procédé de raffinage d'un ferro-alliage. Ce procédé consiste à souffler de l'oxygène moléculaire ou un mélange de gaz comprenant de l'oxygène moléculaire dans une fonte du ferro-alliage. Une matière particulaire métallurgiquement acceptable est introduite, par en haut, dans la fonte. La matière particulaire est transportée dans la fonte dans un premier jet supersonique de gaz qui se déplace vers la fonte recouverte par un second jet de gaz.

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