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    ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS
    1.
    发明申请
    ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS 审中-公开
    从能源效率高效地回收金属

    公开(公告)号：US20170009319A1

    公开(公告)日：2017-01-12

    申请号：US15094857

    申请日：2016-04-08

    Applicant: Pyrogenesis Canada Inc.

    Inventor： Michel G. Drouet ,  Francois Rivard ,  Pierre Carabin

    IPC: C22B21/00 ,  C22B7/04 ,  C22B9/05 ,  F27D3/16 ,  F27B7/10 ,  F27B7/16 ,  F27B7/20 ,  C22B21/06 ,  F27B7/06

    CPC classification number: C22B21/0092 ,  C22B5/00 ,  C22B7/003 ,  C22B7/04 ,  C22B9/055 ,  C22B13/045 ,  C22B19/20 ,  C22B21/00 ,  C22B21/0069 ,  C22B21/064 ,  C22B23/04 ,  F27B7/06 ,  F27B7/10 ,  F27B7/16 ,  F27B7/2016 ,  F27B17/00 ,  F27D3/16 ,  F27D2003/163 ,  F27D2003/167 ,  Y02P10/218 ,  Y02P10/232 ,  Y02P10/262

    Abstract: A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with good capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt; in addition, the non-use of fluxing salt for the treatment means that the non-contaminated residue can be used as a cover for the electrolytic cells in the case of aluminum. In the case of zinc dross, the residue is a valuable zinc oxide by-product very low in contaminants.

    Abstract translation: 公开了一种用于从热和冷浮渣中改善金属回收的方法和装置，其中，浮渣处理炉具有能够储存热量的填充材料。 通过注入氧化气体将该填充材料预热至期望的温度，以在开采渣中含有的可回收金属并排出处理残渣后，将残留在填充材料中的不可回收金属燃烧。 当在这种炉子中处理浮渣时，通过从填充材料的传导发出的热量足以熔化和分离渣滓中包含的可回收金属，而不需要添加外部热源，例如燃料或气体燃烧器，等离子炬或电 弧并且不使用任何盐流。 此外，处于熔融状态的回收金属可以不熔化熔体而被供给到熔融金属保持炉中; 此外，不使用助熔盐用于处理意味着在铝的情况下，未污染的残余物可以用作电解池的覆盖物。 在锌渣的情况下，残留物是有价值的氧化锌副产物，污染物非常低。

    PLASMA HEATED FURNACE FOR IRON ORE PELLET INDURATION
    2.
    发明申请
    PLASMA HEATED FURNACE FOR IRON ORE PELLET INDURATION 有权
    等离子体加热炉，用于铁矿石注浆

    公开(公告)号：US20140311286A1

    公开(公告)日：2014-10-23

    申请号：US14362057

    申请日：2012-12-03

    Applicant: PYROGENESIS CANADA INC.

    Inventor： Michel G. Drouet ,  Pierre Carabin

    IPC: C22B1/24 ,  H05H1/34

    CPC classification number: C22B1/2406 ,  C22B1/20 ,  C22B1/2413 ,  F27B21/06 ,  H05H1/34 ,  H05H1/44 ,  H05H2001/3452 ,  Y02P10/143

    Abstract: In the present pelletizing apparatus, the induration of iron ore concentrate pellets is achieved in a tunnel furnace heated by plasma torches, wherein the generation of by the conventional iron ore pelletizing processes is reduced by using electricity powered plasma torches instead of burning natural gas, heavy oil or pulverized coal in burners, thereby reducing considerably industrial pollution of the atmosphere.

    Abstract translation: 在本造粒装置中，铁矿精矿颗粒的硬化是在等离子炬加热的隧道炉中实现的，其中通过使用电动等离子火炬而不是燃烧天然气，重的 燃油中的油或粉煤，从而大大减少工业上的大气污染。

    Energy Efficient Salt-Free Recovery Of Metal From Dross
    3.
    发明申请
    Energy Efficient Salt-Free Recovery Of Metal From Dross 审中-公开
    从渣滓中节能高效地回收金属

    公开(公告)号：US20130186236A1

    公开(公告)日：2013-07-25

    申请号：US13655204

    申请日：2012-10-18

    Applicant: Pyrogenesis Canada Inc.

    Inventor： Michel G. Drouet ,  Francois Rivard ,  Pierre Carabin

    IPC: C22B21/00 ,  C22B19/20 ,  C22B3/00 ,  C22B5/00

    CPC classification number: C22B21/0092 ,  C22B5/00 ,  C22B7/003 ,  C22B7/04 ,  C22B9/055 ,  C22B13/045 ,  C22B19/20 ,  C22B21/00 ,  C22B21/0069 ,  C22B21/064 ,  C22B23/04 ,  F27B7/06 ,  F27B7/10 ,  F27B7/16 ,  F27B7/2016 ,  F27B17/00 ,  F27D3/16 ,  F27D2003/163 ,  F27D2003/167 ,  Y02P10/218 ,  Y02P10/232 ,  Y02P10/262

    Abstract: A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt.

    Abstract translation: 公开了一种用于从热和冷浮渣中改善金属回收的方法和装置，其中，浮渣处理炉具有能够储存热量的填充材料。 通过注入氧化气体将该填充材料预热至期望的温度，以在开采渣中含有的可回收金属并排出处理残渣后，将残留在填充材料中的不可回收金属燃烧。 当在这种炉子中处理浮渣时，通过从填充材料的传导发出的热量足以熔化和分离渣滓中包含的可回收金属，而不需要添加外部热源，例如燃料或气体燃烧器，等离子炬或电 弧并且不使用任何盐流。 此外，处于熔融状态的回收金属可以在不使熔体冷却的情况下进料到熔融金属保持炉。

    ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS
    5.
    发明申请
    ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS 审中-公开

    公开(公告)号：US20200332392A1

    公开(公告)日：2020-10-22

    申请号：US16712810

    申请日：2019-12-12

    Applicant: Pyrogenesis Canada, Inc.

    Inventor： Michel G. Drouet ,  Francois Rivard ,  Pierre Carabin

    IPC: C22B21/00 ,  C22B7/00 ,  F27B17/00 ,  C22B5/00 ,  C22B3/00 ,  C22B19/20 ,  C22B7/04 ,  C22B9/05 ,  C22B21/06 ,  F27B7/06 ,  F27B7/10 ,  F27B7/16 ,  F27B7/20 ,  F27D3/16

    Abstract: A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with good capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to burn non-recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue. When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt; in addition, the non-use of fluxing salt for the treatment means that the non-contaminated residue can be used as a cover for the electrolytic cells in the case of aluminum. In the case of zinc dross, the residue is a valuable zinc oxide by-product very low in contaminants.

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