Method and apparatus for producing metal powder

B - Operations – Transporting – 22 – F

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B22F 9/02 (2006.01) B22F 9/06 (2006.01) B22F 9/08 (2006.01)

Patent

CA 2442153

A method for producing a metal powder which comprises combusting a gaseous mixture of oxygen and hydrogen in a high pressure water and heating a metal material with the combustion gas generated, to thereby pulverize the metal; and an apparatus for producing the metal which is composed of a high pressure water tank, a nozzle for spraying a gaseous mixture of oxygen and hydrogen, a section for supplying an elemental metal material and a pressure container having an ignition device and a combustion chamber. The method allows the economical production of a metal powder, in particular a titanium metal powder, having high purity and an uniform particle shape and size.

L'invention concerne un procédé de production de poudre métallique qui consiste à brûler un mélange gazeux d'oxygène et d'hydrogène dans de l'eau à haute pression et à chauffer un matériau métallique avec le gaz de combustion généré, afin de pulvériser le métal. L'invention concerne en outre un appareil permettant de produire le métal, composé d'un réservoir d'eau à haute pression, d'une buse de pulvérisation d'un mélange gazeux d'oxygène et d'hydrogène, d'une section destinée à fournir un matériau métallique élémentaire et d'un récipient sous pression pourvu d'un dispositif d'allumage et d'une chambre de combustion. Le procédé permet de produire de façon économique une poudre métallique, en particulier une poudre de titane, d'une pureté élevée, de morphologie et de dimension de particules uniformes.

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