Method of the pyrometallurgical treatment of metals, metal...

Details Method of the pyrometallurgical treatment of metals, metal... Method of the pyrometallurgical treatment of metals, metal...

C - Chemistry, Metallurgy

21

C

C21C 5/52 (2006.01) C21C 5/46 (2006.01) F27B 3/22 (2006.01) F27D 3/16 (2006.01) F27D 3/18 (2006.01) F27D 99/00 (2010.01)

Patent

CA 2472210

In the metallurgical treatment of metals, metal melts and/or slags in a metallurgical unit or melting vessel, especially in electric arc furnaces, injection devices (1) are used for blowing in or up oxygen-rich gases (6) and/or carbonaceous substances, which cause as long as possible gas jet (6') with a high pulse energy to strike to strike the surface of the slag or metal. It is known to envelope produced gas jet (6'), thereby focusing it. According to the invention, such an envelope is obtained by using a hot gas (5, 5') that is preaccelerated to such a degree that the central gas jet (6') is preferably without pulse losses.

Lors du traitement métallurgique des métaux, des bains de fusion et/ou des scories dans une unité métallurgique, ou dans une cuve de fusion, en particulier dans des fours électriques à arc, on utilise des dispositifs d'injection (1) pour insuffler des gaz (6) riches en oxygène et/ou des substances carbonées. Lesdits dispositifs d'injection envoient un jet de gaz (6'),le plus long possible et à énergie pulsée élevée, sur les surfaces des scories ou de métal. L'enrobage dudit jet de gaz (6') pour le concentrer est une technique connue. Selon le procédé de l'invention, cet enrobage est réalisé à l'aide d'un gaz chaud (5, 5') qui a été préaccéléré de sorte que ledit enrobage dudit jet de gaz (6') central se produit avec le moins de perte d'impulsions possible.

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