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    METHOD OF OPERATING AN ELECTRIC ARC FURNACE AND STEEL MILL
    2.
    发明公开
    METHOD OF OPERATING AN ELECTRIC ARC FURNACE AND STEEL MILL 审中-公开

    公开(公告)号：US20240191314A1

    公开(公告)日：2024-06-13

    申请号：US18286667

    申请日：2022-04-20

    申请人： PAUL WURTH S.A.

    发明人： Jan KRULL ,  Katia PAPALIA

    IPC分类号： C21B13/12 ,  C21B13/00 ,  F27B3/22 ,  F27D17/00

    CPC分类号： C21B13/12 ,  C21B13/0006 ,  C21B13/0073 ,  F27B3/22 ,  F27D17/003 ,  C21B2100/80 ,  C21B2300/02

    摘要： The disclosure discloses a method of operating an electric arc furnace, the method comprising capturing, from at least one facility of a steel mill, a heated metallurgical gas comprising water and carbon monoxide; conducting, by a reactor supply line, said metallurgical gas to a reactor; transforming, by a treatment of said metallurgical gas within said reactor, the carbon monoxide and water into hydrogen and carbon dioxide according to a water-gas shift reaction; and subsequently separating said hydrogen by a separation device. The method is characterized in that it further comprises providing an iron-bearing material, which comprises iron mainly in the form of iron oxide, to the electric arc furnace; at least partially melting the iron-bearing material to obtain a molten bath; conducting, by a furnace supply line, said hydrogen to the electric arc furnace, which is arranged downstream of the furnace supply line; and injecting, by a plurality of hydrogen injection devices, said hydrogen into said electric arc furnace, such that said hydrogen reacts as a reducing agent for reducing iron oxide in the molten bath during a smelting operation of the electric arc furnace.

    PLASMA INDUCED FUMING FURNACE
    4.
    发明申请
    PLASMA INDUCED FUMING FURNACE 有权

    公开(公告)号：US20220389536A1

    公开(公告)日：2022-12-08

    申请号：US17773674

    申请日：2020-11-20

    申请人： AURUBIS BEERSE

    发明人： Mathias Chintinne ,  Yves De Visscher ,  Charles Geenen ,  Bert Coletti

    IPC分类号： C22B4/00 ,  C21B13/00 ,  C21B13/12 ,  C21B3/06 ,  C22B5/16 ,  C22B7/04 ,  F27B3/20 ,  F27B3/22 ,  F27D99/00

    摘要： Disclosed is a single-chamber furnace for fuming an evaporable metal or metal compound from a metallurgical charge including a bath furnace for containing a molten charge up to a determined level, the furnace being equipped with a non-transferred plasma torch for the generation of plasma and a first submerged injector for injecting the plasma below the determined level, the furnace further including an afterburning zone to form an oxidized form of the at least one evaporable metal or metal compound, and a recovery zone for recovering the oxidized form from the gas formed in the afterburning zone, whereby the furnace is further equipped with a second submerged injector for injecting extra gas into the furnace below the determined level. Further disclosed is the use of the furnace and a process for fuming an evaporable metal or metal compound from a metallurgical charge.

    Melting furnace
    6.
    发明授权
    Melting furnace 有权

    公开(公告)号：US11125503B2

    公开(公告)日：2021-09-21

    申请号：US17043875

    申请日：2020-05-20

    申请人： Tsuyoshi Kajitani ,  NIPPON CRUCIBLE CO., LTD.

    发明人： Tsuyoshi Kajitani

    IPC分类号： F27B3/22 ,  F27B3/04 ,  F27B3/20

    摘要： A melting furnace includes a melting portion to which a metal material is supplied; a burner for melting the metal material in the melting portion; a heating portion that receives the molten material from the melting portion; a temperature regulating portion that receives the molten material from the heating portion; a separator that separates the heating portion and the temperature regulating portion, wherein the lower portion of the separator is immersed in the molten material to form, below the separator, an inlet; an immersion heater wherein at least part of the immersion heater is immersed in the molten material in the temperature regulating portion; and a gas introduction path that is formed in the separator, and that introduces combustion gas from the burner into a space above the molten material in the temperature regulating portion; wherein the burner is controlled so that the combustion gas has an oxygen concentration of 5% or less.

    METHODS OF MELTING FEEDSTOCK USING A SUBMERGED COMBUSTON MELTER
    7.
    发明申请
    METHODS OF MELTING FEEDSTOCK USING A SUBMERGED COMBUSTON MELTER 有权
    使用一个分散式COMBANTON MELTER熔化进料的方法

    公开(公告)号：US20170074506A1

    公开(公告)日：2017-03-16

    申请号：US14854271

    申请日：2015-09-15

    申请人： JOHNS MANVILLE

    发明人： Aaron Morgan Huber ,  Albert Patrick Faulkinbury

    IPC分类号： F23C3/00 ,  F23D14/22 ,  F27B1/08 ,  F27B3/20 ,  F27B3/22

    CPC分类号： F23C3/004 ,  C03B5/2356 ,  F23D14/22 ,  F27B1/08 ,  F27B3/205 ,  F27B3/225

    摘要： Methods of maximizing mixing and melting in a submerged combustion melter (SCM) are described. One method includes melting an inorganic feedstock in an SCM using an arrangement of two or more submerged combustion (SC) burners, the SCM having a length (L) and a width (W), a centerline (C), a north side (N) and a south side (S), and operating the arrangement of SC burners such that a progressively higher percentage of a total combustion flow from the SC burners occurs from SC burners at progressively downstream positions in the SCM. Other methods include operating the N and S SC burners with more combustion flow than the central burners. Other methods include strategic placement of fuel lean SC burners and fuel rich SC burners.

    摘要翻译： 描述了在浸没式燃烧器（SCM）中最大化混合和熔化的方法。 一种方法包括使用两个或多个浸没式燃烧（SC）燃烧器的布置在SCM中熔化无机原料，SCM具有长度（L）和宽度（W），中心线（C），北侧（N ）和南侧（S），并且操作SC燃烧器的布置，使得来自SC燃烧器的总燃烧流量的逐渐更高百分比从SC燃烧器在SCM的逐渐下游位置发生。 其他方法包括操作具有比中央燃烧器更多的燃烧流量的N和S SC燃烧器。 其他方法包括燃料贫燃SC燃烧器和富燃料燃烧器的战略布置。

    Injector device for blowing oxygen-rich gases on or in, in a metallurgical unit or melting vessel, and electric arc furnace
    9.
    发明授权
    Injector device for blowing oxygen-rich gases on or in, in a metallurgical unit or melting vessel, and electric arc furnace 有权
    用于在冶金单元或熔化容器以及电弧炉中或其中吹入富氧气体的喷射装置

    公开(公告)号：US09453680B2

    公开(公告)日：2016-09-27

    申请号：US15026320

    申请日：2014-09-10

    申请人： SMS Group GmbH

    发明人： Stefan Buess

    IPC分类号： F27D3/16 ,  C21C5/52 ,  F27B3/08 ,  F27B3/22 ,  F27D99/00

    CPC分类号： F27D3/16 ,  C21C5/4606 ,  C21C5/5217 ,  F27B3/085 ,  F27B3/225 ,  F27D3/18 ,  F27D99/0001 ,  F27D2003/164 ,  F27D2003/165 ,  F27D2003/169 ,  F27D2099/0021 ,  F27D2099/0043 ,  F27D2099/0055 ,  F27D2099/0056 ,  Y02P10/216

    摘要： The invention relates to an injector apparatus (1) for the pyrometallurgical treatment of metals, molten metals and/or slags in a metallurgical unit or melting vessel, said apparatus comprising an injector device (2, 3) for producing a high-velocity gas jet (5) from an oxygen gas jet (6) and an ignited combustible gas/air mixture jet (7), in which the injector device (2, 3) comprises a de Laval nozzle element (8) for producing the oxygen gas jet (6), said de Laval nozzle element being arranged in a nozzle head part (41), and in which the combustible gas/air mixture (7) can be mixed by means of a mixing element (9) for mixing combustible gas (32) and air (36), wherein the de Laval nozzle element (8) and the mixing element (9) are arranged jointly along the center longitudinal axis (13) of the injector device (2, 3), one behind the other, such that they can be detached from one another.

    摘要翻译： 本发明涉及一种用于在冶金单元或熔化容器中对金属，熔融金属和/或炉渣进行火法冶金处理的注射器装置（1），所述装置包括用于产生高速气体射流的注射器装置（2,3） （5）从氧气射流（6）和点燃的可燃气体/空气混合物射流（7）中排出，其中注射装置（2,3）包括用于产生氧气射流的德拉瓦尔喷嘴元件（8） 所述脱拉瓦喷嘴元件布置在喷嘴头部分（41）中，其中可燃气体/空气混合物（7）可以通过用于混合可燃气体（32）的混合元件（9）混合， 和空气（36），其中所述脱拉瓦尔喷嘴元件（8）和所述混合元件（9）沿着所述注射器装置（2,3）的中心纵向轴线（13）共同布置，一个在另一个之后，使得 它们可以彼此分开。

    AN END PORT REGENERATIVE FURNACE
    10.
    发明申请
    AN END PORT REGENERATIVE FURNACE 审中-公开
    末端端口再生炉

    公开(公告)号：US20160003543A1

    公开(公告)日：2016-01-07

    申请号：US14769479

    申请日：2014-02-25

    申请人： LINDE AKTIENGESELLSCHAFT

    发明人： Neil Simpson ,  Richard Wilcox

    IPC分类号： F27B3/26 ,  F27B3/22 ,  F27B3/20 ,  C03B5/235 ,  C03B5/237

    CPC分类号： F27B3/263 ,  C03B5/235 ,  C03B5/2353 ,  C03B5/237 ,  C03B2211/30 ,  F27B3/20 ,  F27B3/205 ,  F27B3/22 ,  F27B3/225 ,  Y02P40/535 ,  Y02P40/55 ,  Y02P40/57

    摘要： An end-port regenerative furnace (10) includes a housing; a combustion chamber (14) within the housing; first and second regenerators (24, 26) each disposed to be in communication with the combustion chamber; and first and second lance assemblies (20, 22) adapted to inject pure fuel gas and pure oxygen concurrent into the half of the combustion chamber closest to a discharge end with a respective one of the first and second regenerators. The first and second regenerators are each constructed and arranged to alternate between a combustion mode and an exhaust mode for the combustion products circulating in the combustion chamber.

    摘要翻译： 端口再生炉（10）包括壳体; 在壳体内的燃烧室（14）; 第一和第二再生器（24,26），每个再生器被设置成与燃烧室连通; 以及适于将纯燃料气体和纯氧同时喷射到最靠近排放端的燃烧室的一半中的第一和第二喷枪组件（20,22）与第一和第二再生器中的相应一个。 第一和第二再生器各自构造和布置成在用于在燃烧室中循环的燃烧产物的燃烧模式和排气模式之间交替。