公开(公告)号：WO2019178668A1

公开(公告)日：2019-09-26

申请号：PCT/CA2019/000034

申请日：2019-03-18

Applicant: PYROGENESIS CANADA INC.

Inventor： ALLARD, Bernad ,  CARABIN, Pierre ,  DORVAL DION , Christopher Alex ,  PROULX, François

IPC: B22F9/14 ,  B22F9/18

Abstract: An apparatus for producing metallic powders from molten feedstock includes a heating source for melting a solid feedstock into a molten feed, and a crucible for containing the molten feed. A liquid feed tube is also provided to feed the molten feed as a molten stream. A plasma source delivers a plasma stream, with the plasma stream being adapted to be accelerated to a supersonic velocity and being adapted : to then impact the molten stream for producing metallic powders. The feed tube extends from the crucible to a location where a supersonic plasma plume atomizes the molten stream. The plasma source includes at least two plasma torches provided with at least one supersonic nozzle aimed towards the molten stream. The multiple plasma torches are disposed symmetrically about the location where the supersonic plasma plumes atomize the molten stream, such as in a ring-shaped configuration.