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    METHOD FOR THE RECOVERY OF ZINC
    1.
    发明申请
    METHOD FOR THE RECOVERY OF ZINC 有权

    公开(公告)号：US20210047709A1

    公开(公告)日：2021-02-18

    申请号：US17042261

    申请日：2019-03-29

    Applicant: TATA STEEL NEDERLAND TECHNOLOGY B.V.

    Inventor： Johannes HAGE ,  Hendrikus Koenraad Albertus MEIJER ,  Tim PEETERS

    IPC: C22B19/36 ,  C22B19/08

    Abstract: A method for the recovery of zinc from zinc containing materials using a smelting apparatus for smelting a metalliferous feed material, wherein the smelting apparatus includes a smelting vessel, a smelt cyclone mounted on the smelting vessel and in connection with the inside of the smelting vessel and an off-gas duct connected to the smelt cyclone, and wherein the method includes the steps of: injecting the feed material with a carrier gas into the smelt cyclone, injecting an oxygen containing gas into the smelt cyclone, injecting coal with a carrier gas into the smelting vessel, injecting an oxygen containing gas into the smelting vessel, optionally injecting fluxes with a carrier gas into the smelting vessel, wherein the zinc containing materials are injected into the smelt cyclone and/or into the smelting vessel.

    METHOD OF RECOVERY OF ZINC AND OTHER METALS FROM METALLURGICAL FINES
    2.
    发明申请
    METHOD OF RECOVERY OF ZINC AND OTHER METALS FROM METALLURGICAL FINES 审中-公开

    公开(公告)号：US20180305789A1

    公开(公告)日：2018-10-25

    申请号：US15959251

    申请日：2018-04-22

    Applicant: American Zinc Recycling Corp.

    Inventor： John PUSATERI ,  Rege ZAGROCKI

    IPC: C22B19/36 ,  C22B1/04 ,  C22B19/08

    CPC classification number: C22B19/36 ,  C22B1/04 ,  C22B19/08

    Abstract: A method and recovering method of recovering zinc oxides and other metal oxides having an injection chamber where a mixture of natural gas and oxygen is formed and then ignited to form high temperature combustion gases of greater than 2000° C. with a high concentration of carbon monoxide. Then, the mixture is transported through a quiescent chamber to a feed chamber where the ignited high temperature combustion gases are mixed with finely divided material, including EAF dust. The mixture is transported to a reaction chamber, wherein zinc vapor and other metal vapors and molten slag particles are formed. The zinc vapor and other metal vapors are separated from the molten slag particles and transported to an insulated plenum. Zinc vapor and other metal vapors are mixed with air and become airborne zinc oxide and other metal oxides. The airborne zinc oxide and other metal oxides are collected.

    Method for the recovery of zinc
    4.
    发明授权
    Method for the recovery of zinc 有权

    公开(公告)号：US11408054B2

    公开(公告)日：2022-08-09

    申请号：US17042261

    申请日：2019-03-29

    Applicant: TATA STEEL NEDERLAND TECHNOLOGY B.V.

    Inventor： Johannes Hage ,  Hendrikus Koenraad Albertus Meijer ,  Tim Peeters

    IPC: C22B19/36 ,  C22B19/08

    Abstract: A method for the recovery of zinc from zinc containing materials using a smelting apparatus for smelting a metalliferous feed material, wherein the smelting apparatus includes a smelting vessel, a smelt cyclone mounted on the smelting vessel and in connection with the inside of the smelting vessel and an off-gas duct connected to the smelt cyclone, and wherein the method includes the steps of: injecting the feed material with a carrier gas into the smelt cyclone, injecting an oxygen containing gas into the smelt cyclone, injecting coal with a carrier gas into the smelting vessel, injecting an oxygen containing gas into the smelting vessel, optionally injecting fluxes with a carrier gas into the smelting vessel, wherein the zinc containing materials are injected into the smelt cyclone and/or into the smelting vessel.

    Blast furnace smelting of zinc
    5.
    发明授权
    Blast furnace smelting of zinc 失效
    高炉冶炼锌

    公开(公告)号：US4371151A

    公开(公告)日：1983-02-01

    申请号：US929977

    申请日：1978-08-01

    Applicant: Michael W. Gammon ,  John A. Clarke

    Inventor： Michael W. Gammon ,  John A. Clarke

    IPC: C22B19/08 ,  C21B7/16 ,  F27B1/16

    CPC classification number: C21B7/16

    Abstract: A tuyere for a blast furnace, the main body of the tuyere being in the form of a tube with a central bore and the nose portion of the tuyere having a downwardly-inclined hood-like extension of the upper wall of the tube, whereby gas passing through the nose of the tuyere is deflected downwardly by the said extension, which extension has a gas outlet aperture of greater area than the cross-sectional area of the bore of the tube.

    Abstract translation: 用于高炉的风口，风口的主体为具有中心孔的管的形式，并且风口的鼻部具有管的上壁的向下倾斜的罩状延伸部，由此气体 穿过风口的鼻子被所述延伸部向下偏转，该延伸部具有比管的孔的横截面面积大的面积的气体出口孔。

    Method for recovering zinc from zinc-containing waste materials
    7.
    发明授权
    Method for recovering zinc from zinc-containing waste materials 失效
    从含锌废物中回收锌的方法

    公开(公告)号：US5188658A

    公开(公告)日：1993-02-23

    申请号：US628573

    申请日：1990-12-14

    Applicant: Jan A. Aune ,  Inger J. Eikeland ,  Thor Pedersen

    Inventor： Jan A. Aune ,  Inger J. Eikeland ,  Thor Pedersen

    IPC: C22B1/16 ,  C22B4/04 ,  C22B7/02 ,  C22B19/08 ,  C22B19/28 ,  F27D17/00

    CPC classification number: C22B4/04 ,  C22B1/16 ,  C22B19/28 ,  C22B7/02 ,  Y02P10/212

    Abstract: The present invention relates to a method for recovering zinc from zinc-containing materials, especially from zinc-containing materials recovered from waste gases in metallurgical smelting processes. Particulate zinc-containing materials are agglomerated together with a carbonaceous reduction material and optionally slag forming materials, and are supplied to a gas tight closed electrothermic smelting furnace containing a molten bath kept at a temperature between 1200.degree. and 1700.degree. C. in which the agglomerates are smelted and subjected to selective reduction and volatilization of zinc and other volatile metals. An inert slag phase and optionally a liquid metal phase are tapped from the smelting furnace, and zinc and other volatile metals are recovered from the waste gas from the smelting furnace by condensation. In order to prevent reoxidation of metallic zinc the particulate zinc-containing materials are agglomerated together with a carbonaceous binder which cracks at a temperature below 700.degree. C. and forms carbon black, and that the temperature in the gas atmosphere in the smelting furnace is kept above 1000.degree. C. in order to maintain a volume ratio between CO.sub.2 and CO in the gas atmosphere in the smelting furnaces below 0.3.

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