Process for production of metallic powder, metallic powder,...

Details Process for production of metallic powder, metallic powder,... Process for production of metallic powder, metallic powder,...

B - Operations, Transporting

22

F

B22F 9/28 (2006.01) C22B 23/06 (2006.01) C22B 1/08 (2006.01) C22B 5/12 (2006.01)

Patent

CA 2417440

Metal chloride vapor and reducing gas are brought into contact to form metallic powder, the metallic powder is washed in carbonic acid aqueous solution, and the metallic powder is classified in a liquid phase. In this way, metallic powder, such as nickel powder, in which the content of chloride components is extremely small and the coarse particle content is small, can be efficiently produced.

La présente invention concerne un procédé de production d'une poudre métallique qui consiste à mettre en contact un gaz de chlorure métallique avec un gaz réducteur, pour former une poudre métallique, puis à laver la poudre métallique avec une solution aqueuse d'acide carbonique et de préférence, à classifier dans l'eau la poudre lavée. Le procédé permet de produire une poudre métallique, telle qu'une poudre de nickel, renfermant une quantité extrêmement faible de chlore résiduel et une faible teneur en poudre grossière.

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