Method and device for manufacturing metallic particulates,...

B - Operations – Transporting – 22 – F

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B22F 9/02 (2006.01) B22F 1/00 (2006.01) B22F 9/08 (2006.01)

Patent

CA 2442154

A method of manufacturing metallic particulates, comprising the steps of forming a combustion chamber having an oxygen/hydrogen mixed gas injection nozzle, an ignitor, and a metallic material feeder on the upper part of a high- pressure water storage tank filled with inert gas, igniting the oxygen/hydrogen mixed gas injection nozzle by the ignitor to melt (evaporate) a material fed from the metallic material feeder, and bringing the produced molten metal drips into contact with high-pressure water to dip the produced metal particulates into water, whereby the metal particulates with high purity and uniform powder shape and grain size can be manufactured.

L'invention concerne un procédé de fabrication de particules métalliques consistant à former une chambre de combustion comportant une buse d'injection de gaz mixte oxygène/hydrogène, un allumeur et une unité d'alimentation en matière métallique sur la partie supérieure d'un réservoir de stockage d'eau haute pression rempli d'un gaz inerte, à allumer cette buse d'injection de gaz mixte oxygène/hydrogène au moyen de l'allumeur en vue de fondre (évaporer) une matière acheminée à partir de l'unité d'alimentation en matière métallique, puis à mettre les gouttes de métal fondu produites en contact avec l'eau haute pression de façon à tremper les particules métalliques produites dans l'eau. On peut ainsi obtenir des particules métalliques présentant une pureté élevée ainsi qu'une forme de poudre et une taille de grain uniformes.

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