Metalothermic reduction of refractory metal oxides

Details Metalothermic reduction of refractory metal oxides Metalothermic reduction of refractory metal oxides

B - Operations, Transporting

22

F

B22F 9/20 (2006.01) C22B 34/24 (2006.01)

Patent

CA 2570548

A method of producing a refractory metal powder by (A) combining (i) an oxide particle component and (ii) a reducing agent; (B) forming a substantially uniform mixture of (i) and (ii); (C) continuously feeding the mixture into a furnace; (D) igniting the mixture at a reaction zone and starting a reaction that is sufficiently exothermic to form a high temperature flash; (E) starting a reaction that is sufficiently exothermic to form a high temperature self- sustaining flash; and (F) producing a free-flowing reduced oxide powder.

L'invention concerne un procédé destiné à produire une poudre métallique réfractaire en (A) combinant (i) un composant de particule d'oxyde et (ii) avec un agent réducteur ; (B) forme un mélange sensiblement uniforme de (i) et (ii) ; (C) alimente en continu le mélange dans un four; (D) enflamme le mélange dans une zone de réaction et produit une réaction suffisamment exothermique pour former une vapeur flash à haute température; (E) produit une réaction suffisamment exothermique pour former une vapeur flash à haute température auto-entretenue, et (F) produit une poudre d'oxyde réduite à écoulement libre.

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