C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 1/08 (2006.01) C21C 5/52 (2006.01) C21C 5/54 (2006.01) C21C 5/36 (2006.01)
Patent
CA 2210505
Procedure to create a foaming slag over molten stainless steel in an electric furnace. powder is added to the slag, the composition of which includes at least one metal oxide and carbon. At least one oxide in the powder is reduced through its reaction with the carbon to form bubbles in the slag that are composed mainly of the metal in the gaseous state, the metal oxide, and carbon monoxide. The bubbles generate a slag in the form of a stable foam.
Procédé pour réaliser un laitier moussant au-dessus d'un acier inoxydable en fusion dans un four électrique caractérisé en ce que: - on introduit dans le laitier, une poudre, contenant dans sa composition au moins un l'oxyde métallique et du carbone, - on réduit au moins un oxyde contenu dans la poudre par la réaction de celui ci avec le carbone pour former, dans le laitier des bulles composées essentiellement du métal à l'état gazeux de l'oxyde métallique et de monoxyde de carbone, les bulles contenues dans le laitier générant un laitier sous la forme d'une mousse stable.
Bletton Olivier
Descaves Frederic
Guillot Yves
Sollier Luc
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Ugine Savoie
Usinor
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