Metal containing compound reduction and melting process

Details Metal containing compound reduction and melting process Metal containing compound reduction and melting process

C - Chemistry, Metallurgy

22

B

C22B 4/00 (2006.01) C22B 5/10 (2006.01) C22B 9/00 (2006.01) F27B 14/06 (2006.01)

Patent

CA 2251811

A metal containing compound reduction and melting process which entails feeding a burden (15) comprising a mixture of the metal containing compound and a suitable reductant in particulate form into an electrically heatable vessel (11) which contains a bath (18) of the said metal in liquid form so that a reaction zone is formed in the burden (15) in which the metal containing compound (15) is reduced and a malting zone (23) is formed below the reaction zone in which the reduced metal is melted; and controlling such process in such a manner that substantially all of the reduction of the said metal containing compound takes place in the solid phase. Apparatus for carrying the said process into operation comprises a single compartment (11) channel type induction furnace (10) in which the said reduction and melting are carried out, the compartment (11) being provided with at least one feeding port (13, 14) for the burden (15); at least one exit port for the liquid metal product; and at least one exit port for any slag formed in the reaction.

L'invention concerne un procédé de réduction et de fusion d'un composé renfermant un métal, ce procédé consistant à amener un lit de fusion (15) comprenant un mélange du composé renfermant un métal et un agent de réduction approprié se présentant sous une forme particulaire dans un récipient chauffé électriquement (11) contenant un bain (18) de ce métal à l'état liquide de sorte qu'une zone de réaction se forme dans le lit de fusion (15) dans lequel, d'une part, le composé renfermant un métal est réduit, et dans lequel, d'autre part, une zone de fusion (23) se forme au-dessous de la zone de réaction dans laquelle le métal réduit est fondu; et contrôler ce processus de façon à ce que pratiquement toute la réduction de ce composé renfermant un métal ait lieu dans la phase solide. L'invention concerne également un appareil pour la mise en oeuvre de ce procédé, comprenant un four d'induction (10) de type canal à compartiment unique (11) dans lequel sont effectuées la réduction et la fusion, ce compartiment (11) étant au moins pourvu d'un orifice d'admission (13, 14) du lit de fusion (15); au moins d'un orifice d'évacuation du produit métallique liquide; et au moins d'un orifice d'évacuation de tout laitier se formant au cours de la réaction.

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