Melting method and device using orientable multipurpose...

Details Melting method and device using orientable multipurpose... Melting method and device using orientable multipurpose...

C - Chemistry, Metallurgy

21

C

C21C 5/52 (2006.01) F27D 99/00 (2010.01) C21C 7/00 (2006.01) F27B 3/22 (2006.01)

Patent

CA 2334392

Device to deliver comburent and combustible gases, such as oxygen, methane or similar, and/or solid combustible materials inside a melting container, the device comprising a first unit (18) functioning as a burner and/or supersonic lance, and a second unit (19) functioning as a burner and/or carbon lance, the units (18, 19) being reciprocally oriented so that the respective streams delivered (21, 22) meet around a point (20) located above or around the upper level of the layer of slag (17), giving rise, during the normal melting cycle, to a substantially stoichiometrically balanced reaction between oxygen and carbon. Melting method using at least one of the devices as above.

L'invention concerne un dispositif permettant de distribuer dans un récipient de fusion des gaz comburants et combustibles, tels que de l'oxygène, du méthane ou analogues, et/ou des matières combustibles solides. Ce dispositif est constitué d'une première unité (18) servant de brûleur et/ou de lance supersonique, et d'une seconde unité (19) servant de brûleur et/ou de lance à carbone. Ces unités (18, 19) sont orientées de façon convergente, de sorte que leurs jets respectifs (21, 22) se croisent autour d'un point (20) situé au-dessus ou autour du niveau supérieur de la couche de scories (17), ce qui donne lieu, pendant le cycle normal de fusion, à une réaction présentant un taux d'oxygène et de carbone sensiblement équilibré du point de vue stoechiométrique. L'invention concerne également un procédé de fusion utilisant au moins un des dispositifs selon l'invention.

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