Separation system of metal powder from slurry and process

Details Separation system of metal powder from slurry and process Separation system of metal powder from slurry and process

C - Chemistry, Metallurgy

22

B

C22B 9/02 (2006.01) B01D 5/00 (2006.01) C22B 9/04 (2006.01) C22B 34/12 (2006.01)

Patent

CA 2506765

A system and method of separating metal powder from a slurry of liquid metal and metal powder and salt is disclosed in which the slurry is introduced into a first vessel operated in an inert environment when liquid metal is separated from the metal powder and salt leaving principally salt and metal powder substantially free of liquid metal. The salt and metal powder is transferred to a second vessel operated in an inert environment with both environments being protected from contamination. Then the salt and metal powder are treated to produce passivated powder substantially free of salt and liquid metal. The method is particularly applicable for use in the production of Ti and its alloys.

L'invention concerne un système et un procédé permettant de séparer une poudre métallique à partir d'une suspension composée de métal liquide, de métal en poudre et de sel. Ce procédé consiste à introduire la suspension dans une première cuve fonctionnant dans un milieu inerte, où le métal liquide est séparé de la poudre de métal et du sel, de manière à laisser principalement du sel et de la poudre métallique sensiblement exempts de métal liquide, puis à transférer le sel et la poudre métallique dans une seconde cuve fonctionnant dans un milieu inerte, les deux milieux étant protégés contre la contamination, et à traiter le sel et la poudre métallique de manière à produire une poudre passivée sensiblement exempte de sel et de métal liquide. Ce procédé convient en particulier pour la production du Ti et de ses alliages.

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