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    METHOD AND APPARATUS FOR PRODUCING HIGH PURITY SPHERICAL METALLIC POWDERS AT HIGH PRODUCTION RATES FROM ONE OR TWO WIRES
    1.
    发明专利
    METHOD AND APPARATUS FOR PRODUCING HIGH PURITY SPHERICAL METALLIC POWDERS AT HIGH PRODUCTION RATES FROM ONE OR TWO WIRES 未知

    公开(公告)号：AU2025201989A1

    公开(公告)日：2025-04-10

    申请号：AU2025201989

    申请日：2025-03-19

    Applicant: PYROGENESIS CANADA INC

    Inventor： PROULX FRANÇOIS ,  DORVAL DION CHRISTOPHER ALEX ,  CARABIN PIERRE

    IPC: B22F9/14 ,  H05H1/26

    Abstract: Abstract The present application relates to a plasma atomization process and apparatus for producing metallic powders from at least one wire feedstock. In the process, an electric arc is applied to the at least one wire 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 feedstock to atomize the molten wire 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.

    Method and apparatus for the production of high purity spherical metallic powders from a molten feedstock
    6.
    发明专利
    Method and apparatus for the production of high purity spherical metallic powders from a molten feedstock 未知

    公开(公告)号：AU2019239776A1

    公开(公告)日：2020-10-29

    申请号：AU2019239776

    申请日：2019-03-18

    Applicant: PYROGENESIS CANADA INC

    Inventor： ALLARD BERNAD ,  CARABIN PIERRE ,  DORVAL DION CHRISTOPHER ALEX ,  PROULX FRANÇOIS ,  MARDAN MILAD

    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.

    PLASMA APPARATUS FOR THE PRODUCTION OF HIGH QUALITY SPHERICAL POWDERS AT HIGH CAPACITY
    9.
    发明专利
    PLASMA APPARATUS FOR THE PRODUCTION OF HIGH QUALITY SPHERICAL POWDERS AT HIGH CAPACITY 未知

    公开(公告)号：CA2987951A1

    公开(公告)日：2016-12-08

    申请号：CA2987951

    申请日：2016-06-06

    Applicant: PYROGENESIS CANADA INC

    Inventor： DORVAL DION CHRISTOPHER ALEX ,  KREKLEWETZ WILLIAM ,  CARABIN PIERRE

    IPC: B22F9/14 ,  B01J2/04

    Abstract: An apparatus and a process for the production at high capacity of high purity powders from a large diameter wire or rod using a combination of plasma torches and induction heating are disclosed. The process provides a superior productivity, by incorporating a more effective inductive preheating system. A mechanism is also included in the apparatus, which allows adjusting the position of the plasma torches and their angle of attack with respect to the wire, which has a direct effect on the mechanical and thermal energy transfer from the plasma plume to the wire, allowing a fine control over the particle size distribution as well as the production capacity. Furthermore, varying the induction frequency allows for the optimization of the temperature profile inside the wire, which can be directly correlated to the resulting mean particle size.

    METHOD AND APPARATUS FOR THE PRODUCTION OF HIGH PURITY SPHERICAL METALLIC POWDERS FROM A MOLTEN FEEDSTOCK
    10.
    发明专利
    METHOD AND APPARATUS FOR THE PRODUCTION OF HIGH PURITY SPHERICAL METALLIC POWDERS FROM A MOLTEN FEEDSTOCK 未知

    公开(公告)号：AU2024266947A1

    公开(公告)日：2024-12-19

    申请号：AU2024266947

    申请日：2024-11-27

    Applicant: PYROGENESIS CANADA INC

    Inventor： ALLARD BERNARD ,  CARABIN PIERRE ,  DORVAL DION CHRISTOPHER ALEX ,  PROULX FRANÇOIS ,  MARDAN MILAD

    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.

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