Continous melting process and apparatus

Details Continous melting process and apparatus Continous melting process and apparatus

C - Chemistry, Metallurgy

21

C

C21C 5/56 (2006.01) C21B 13/08 (2006.01) C22B 7/00 (2006.01) C22B 9/00 (2006.01) C22B 9/16 (2006.01) F27B 7/20 (2006.01) F27B 7/32 (2006.01) F27B 19/04 (2006.01) F27D 3/00 (2006.01) F27D 3/18 (2006.01)

Patent

CA 2332108

A continuous process is provided for rapid melting of a variety of virgin and recycled ferrous and non-ferrous metals. This is accomplished by distributing the introduction of the unmelted charge materials and hence the melting heat requirements along an elongate gas-solid-liquid reaction zone within a rotary furnace, according to the distribution of heat available to effect melting. In the case of fine-sized metal charge materials, fluxes and additive reagents, this charge distribution is implemented by traversing of the nozzle jet, as directed to penetrate into the metal and slag bath from a solids injection lance, successively backwards and forwards and, in the case of coarse-sized materials, by traversing of the dischage from an oscillating conveyor.

Procédé en continu pour la fusion rapide de toute une série de métaux ferreux et non ferreux de première fusion et recyclés, selon lequel l'introduction de la charge non fondue et, partant, les impératifs de chaleur de fusion sont répartis le long d'une zone de réaction allongée gaz-solide-liquide dans un four rotatif, en fonction de la répartition de la chaleur disponible pour effectuer la fusion. Dans le cas de charges sous forme de métaux à particules de petite taille, de flux et de réactifs d'addition, cette répartition est mise en oeuvre par traversée du jet de tuyère, dirigé pour pénétrer dans le bain de métal et de scories à partir d'une lance d'injection de solides, successivement vers l'avant et vers l'arrière, et dans le cas de charges constituées de particules grossières, par traversée de l'évacuation d'un transporteur oscillant.

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