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1.发明申请公开(公告)号：US20180169763A1
公开(公告)日：2018-06-21
申请号：US15579693
申请日：2016-06-06
Applicant: PYROGENESIS CANADA INC.
Inventor： Christopher Alex Dorval Dion , William Kreklewetz , Pierre Carabin
CPC classification number: B22F9/14 , B01J2/04 , B22F9/082 , B22F2202/13 , B22F2998/00 , B22F2999/00 , C21D9/60 , C21D9/68 , H05H1/42 , Y02P10/253
Abstract: An apparatus and a process for the production at high capacity of high purity powders from a wire using a combination of plasma torches and induction heating are disclosed. The process has good productivity by providing a preheating system. A mechanism is included in the apparatus, which allows adjusting the position of the plasma torches and their angle of attack with respect to the wire, permitting to control the particle size distribution.
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公开(公告)号：US12172217B2
公开(公告)日：2024-12-24
申请号：US15579693
申请日：2016-06-06
Applicant: PYROGENESIS CANADA INC.
Inventor： Christopher Alex Dorval Dion , William Kreklewetz , Pierre Carabin
Abstract: An apparatus and a process for the production at high capacity of high purity powders from a wire using a combination of plasma torches and induction heating are disclosed. The process has good productivity by providing a preheating system. A mechanism is included in the apparatus, which allows adjusting the position of the plasma torches and their angle of attack with respect to the wire, permitting to control the particle size distribution.
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公开(公告)号：US11839918B2
公开(公告)日：2023-12-12
申请号：US16972949
申请日：2019-06-06
Applicant: PYROGENESIS CANADA INC.
Inventor： François Proulx , Christopher Alex Dorval Dion , Pierre Carabin
CPC classification number: B22F9/14 , B22F1/065 , B22F9/082 , H05H1/26 , B22F2009/0824 , B22F2009/0848 , B22F2202/13 , B22F2999/00
Abstract: The present application relates to a plasma atomization process and apparatus for producing metallic powders from at least one wire/rod feedstock. In the process, an electric arc is applied to the at least one wire/rod feedstock to melt the same. A plasma torch is employed to generate a supersonic plasma stream at an apex at which the electric arc is transferred to the at least one wire/rod feedstock to atomize the molten wire/rod feedstock into particles. A downstream cooling chamber solidifies the particles into the metallic powders. An anti-satellite diffuser is employed to prevent recirculation of the powders in order to avoid satellite formation. In an apparatus where two wires are fed, one wire serves as an anode, and the other as a cathode.
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公开(公告)号：US11772159B2
公开(公告)日：2023-10-03
申请号：US16981692
申请日：2019-03-18
Applicant: PYROGENESIS CANADA INC.
Inventor： Bernard Allard , Pierre Carabin , Christopher Alex Dorval Dion , Milad Mardan , François Proulx
CPC classification number: B22F9/082 , B22F1/065 , B22F9/14 , H05H1/42 , B22F2009/088 , B22F2009/0824 , B22F2009/0832 , B22F2202/13
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 N 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.
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