DIRECT REDUCTION PROCESS UTILIZING HYDROGEN
    2.
    发明申请

    公开(公告)号:WO2021061896A1

    公开(公告)日:2021-04-01

    申请号:PCT/US2020/052373

    申请日:2020-09-24

    Abstract: A direct reduction method/system, including: adding variable amounts of natural gas, hydrogen, and a carbon-free oxidizing gas to a feed gas stream upstream of a reformer; reforming the feed gas stream in the reformer to form a reformed gas stream, and delivering the reformed gas stream to a shaft furnace, where the reformed gas stream is used to reduce a metallic ore material to a direct reduced metallic material. The feed gas stream includes a top gas stream recycled from the shaft furnace. Optionally, the carbon-free oxidizing gas includes steam and the method further includes controlling a steam flow rate of the steam to maintain a maximum k-factor value of the feed gas stream of 0.74 or lower. Optionally, the variable amount of hydrogen is selected to replace 20-90% of the natural gas by fuel value. The variable amount of hydrogen is selected based upon an available supply of hydrogen.

    METHOD TO PRODUCE A CAPSULATED PRESSED REDUCED IRON COMPOUND AND CAPSULATED PRESSED REDUCED IRON COMPOUND
    3.
    发明申请
    METHOD TO PRODUCE A CAPSULATED PRESSED REDUCED IRON COMPOUND AND CAPSULATED PRESSED REDUCED IRON COMPOUND 审中-公开
    制造包封的压制还原铁化合物和包封压制还原铁化合物的方法

    公开(公告)号:WO2017157908A1

    公开(公告)日:2017-09-21

    申请号:PCT/EP2017/055940

    申请日:2017-03-14

    Abstract: In order to provide a solution which provides a direct reduced iron product which has an improved performance in respect to its capability to be transported over long distances and in respect to its melting properties in primary metallurgical steel making processes and which is suitable as a scrap substituting material, a method for producing a capsulated pressed reduced iron compound (5) is proposed, which compound (5) is completely encapsulated by a, preferably metallic, covering embodying material (4), wherein the method comprises the steps of reducing iron ore in an iron ore direct reduction shaft furnace and subjecting a certain amount of the thus obtained reduced iron or sponge iron (2) to a cold briquetting or cold forming process executed in a forming device, wherein the certain amount of reduced iron or of sponge iron (2) is delivered to at least one mould arranged in the forming device, is exposed to a compressive force and press-formed to constitute the capsulated pressed reduced iron compound (5) having a shape corresponding to the form provided by the at least one mould arranged in the forming device and having an apparent density of greater than 5.0 g/cm 3 , and wherein the certain amount of reduced iron or sponge iron(2) is completely encapsulated either by means of the covering embodying material (4) being provided before or during the certain amount of reduced iron or sponge iron is exposed to the compressive force or by means of the covering embodying material (4) being provided immediately after the certain amount of reduced iron or sponge iron (2) is press-formed to embody the form of the iron compound (5). During above process certain additives and/or CDRI fines and/or non-contaminant metal chips and/or secondary metallurgy additives in defined ratios could be included in the invented capsulated pressed reduced iron compound (5) CAPRI.

    Abstract translation: 为了提供一种解决方案,该方案提供了一种直接还原铁产品,该产品在长距离输送能力方面以及在主要冶金炼钢过程中的熔化性能方面具有改进的性能 (5)完全被优选金属覆盖的实施材料(4)包封的方法,其中所述方法 包括以下步骤:在铁矿石直接还原竖炉中还原铁矿石,并将一定量由此获得的还原铁或海绵铁(2)在成形装置中进行冷压块或冷成形工艺,其中一定量 的还原铁或海绵铁(2)被输送到布置在成形装置中的至少一个模具中,暴露于压缩力并压制成型以形成囊体 (5),所述还原铁化合物(5)的形状对应于由设置在所述成形装置中的所述至少一个模具提供的形式,并且具有大于5.0g / cm 3的表观密度,并且其中 一定量的还原铁或海绵铁(2)通过在一定量的还原铁或海绵铁暴露于压缩力之前或期间提供的覆盖实施材料(4)被完全封装,或者通过 在一定量的还原铁或海绵铁(2)被压制成型以体现铁化合物(5)的形式之后立即提供覆盖实施材料(4)。 在上述过程中,本发明的胶囊包封的压制还原铁化合物(5)CAPRI中可包含限定比例的某些添加剂和/或CDRI细粒和/或无污染金属屑和/或二次冶金添加剂。

    METHOD FOR REDUCING IRON OXIDE TO METALLIC IRON USING COKE OVEN GAS
    4.
    发明申请
    METHOD FOR REDUCING IRON OXIDE TO METALLIC IRON USING COKE OVEN GAS 审中-公开
    使用焦炉煤气将氧化铁还原成金属铁的方法

    公开(公告)号:WO2016048709A3

    公开(公告)日:2016-03-31

    申请号:PCT/US2015/050107

    申请日:2015-09-15

    Abstract: The present invention provides a method for reducing iron oxide to metallic iron using coke oven gas, including: dividing coke oven gas from a coke oven gas source into a plurality of coke oven gas streams; providing a first coke oven gas stream to a hydrogen enrichment unit to form a hydrogen-rich product stream that is delivered to a reduction shaft furnace as part of a reducing gas stream; and providing a tail gas stream from the hydrogen enrichment unit to a reforming reactor to form a reformed gas stream that is delivered to a reduction shaft furnace as part of the reducing gas stream. Optionally, a spent top gas stream from the reduction shaft furnace is cleansed of CO 2 and recycled back to the reducing gas stream.

    Abstract translation: 本发明提供了一种使用焦炉气将氧化铁还原为金属铁的方法,包括:将来自焦炉气源的焦炉煤气分成多个焦炉气流; 提供第一焦炉气流至富氢单元以形成富氢产物流,所述富氢产物流作为还原气流的一部分输送至还原竖炉; 以及从所述富氢单元向重整反应器提供尾气流以形成重整气流,所述重整气流作为所述还原气流的一部分被输送到还原竖炉。 可选地,来自还原竖炉的用过的顶部气流被CO 2净化并再循环回到还原气流中。

    VERFAHREN ZUM AUFHEIZEN VON PROZESSGASEN FÜR DIREKTREDUKTIONSANLAGEN
    5.
    发明申请
    VERFAHREN ZUM AUFHEIZEN VON PROZESSGASEN FÜR DIREKTREDUKTIONSANLAGEN 审中-公开
    法工艺气体的直接还原工厂加热

    公开(公告)号:WO2014040997A1

    公开(公告)日:2014-03-20

    申请号:PCT/EP2013/068743

    申请日:2013-09-10

    Abstract: Die Erfindung betrifft ein Verfahren zum Reduzieren von Eisenerz im Direktreduktionsverfahren, wobei durch ein Reduktionsaggregat wie ein Schachtofen das zu reduzierende Eisenerz durchgeführt wird und mit einem Reduktionsgas in Kontakt gebracht wird, wobei das Reduktionsgas in das Reduktionsaggregat eingebracht wird und das Aggregat durchströmt und nach dem Durchströmen des Aggregats aus dem Aggregat abgezogen wird, wobei das Gas nach dem Verlassen des Aggregats aufbereitet und gegebenenfalls mit neuen Reduktionsgasanteilen angereichert und zurückgeführt wird, wobei das Reduktionsgas vor dem Eintritt in das Reduktionsaggregat erhitzt wird, dadurch gekennzeichnet, dass die Erhitzung des Reduktionsgases vor dem Eintritt in das Aggregat elektrisch erfolgt.

    Abstract translation: 本发明涉及一种用于减少在直接还原过程中的铁矿石,其中,作为竖炉将被还原的铁矿石通过缩小单元进行,并且使其与还原性气体接触,所述还原气体被引入到还原单元和流过单元和流经后一方法 聚集从聚集体,其中所述气体在离开聚合后处理,并任选地与新的还原性气体馏分富集并反馈,其中,所述还原性气体在进入前的减速单元加热剥离,其特征在于在该条目中的还原气体的加热之前 电发生在聚集体。

    METHOD AND DEVICE FOR DISTRIBUTING A LUMPY BULK MATERIAL
    6.
    发明申请
    METHOD AND DEVICE FOR DISTRIBUTING A LUMPY BULK MATERIAL 审中-公开
    方法和装置用于分配块状散料

    公开(公告)号:WO02027041A2

    公开(公告)日:2002-04-04

    申请号:PCT/EP2001/009852

    申请日:2001-08-27

    CPC classification number: C21B5/008 C21B13/002 F27B1/20 F27D2003/0007

    Abstract: The invention relates to a device and method for distributing a lumpy bulk material, in particular, at least partially prereduced iron ore, on an expansive surface, especially on a static bed. Said surface extends inside a reactor or vessel used in physical or chemical process technology, especially inside a reactor of a smelting works, for producing pig iron or steel intermediate products, and the lumpy bulk material is charged by means of at least one charging device, which has at least two, in particular, rotationally symmetrical drop shafts, which are preferably arranged at the same distance from the vertical longitudinal axis of the reactor. At least one portion of the bulk material, particularly after having been introduced into the drop shaft, is distributed, before striking the expansive surface, on a scattering device, which is assigned to at least one of the drop shafts, preferably inside the drop shaft. The distribution of the bulk material ensues, when viewed from above, in a radial and/or tangential direction.

    Abstract translation: 本发明涉及一种装置和用于分配一个块状散料的方法,特别是至少部分地预还原上的广泛表面铁矿石,特别是在固定的床,该表面在反应器中的物理或化学工艺工程中使用的反应器或容器内延伸的,特别是 用于生产生铁或初级钢制品,冶金厂占地面积,并经由至少一个充电装置,其具有至少两个,特别是旋转对称的,槽,其优选地被布置在相等的距离从所述反应器的垂直纵向轴线被充电块状块状材料。 在这种情况下,至少本体材料的一部分,特别是引入到所述下支路后,zugeorneten其上的一个,所述滑槽中的至少一个的宽表面上撞击之前,散射装置中,优选在所述腿部的情况下,在 - 径向和/或切线方向 - 从上方观察 分布。

    A DIRECT SMELTING PROCESS
    7.
    发明申请
    A DIRECT SMELTING PROCESS 审中-公开
    直接的冶炼工艺

    公开(公告)号:WO00014285A1

    公开(公告)日:2000-03-16

    申请号:PCT/AU1999/000725

    申请日:1999-09-03

    Abstract: A direct smelting process for producing metal from a metalliferous feed material is disclosed. The direct smelting process is a molten bath-based process in which smelting occurs predominantly in the metal layer, carrier gas/metalliferous feed material/solid carbonaceous material are injected into the metal layer via lances/tuyeres, and oxygen-containing gas is injected into the top space above the molten bath and post-combusts reaction gases released from the bath. The injection of metalliferous feed material and solid carbonaceous material causes molten material to be projected from the molten bath as splashes, droplets and streams and to form a transition zone. The process is characterised by forming a pipe of a solid material on an outlet end of at least one lance/tuyere while injecting the metalliferous feed material and the carbonaceous material through the lances/tuyeres and thereby extending the effective length of the lance/tuyere or the lances/tuyeres.

    Abstract translation: 公开了一种用于从含金属进料生产金属的直接熔炼方法。 直接熔炼工艺是熔融浴法,熔融主要发生在金属层中,载气/含金属进料/固体碳质材料通过喷枪/风口注入金属层,并将含氧气体注入 在熔池之上的顶部空间,并且从浴中释放反应气体。 注入含金属的进料和固体碳质材料会导致熔融材料从熔池中溅出,如飞溅,液滴和流,并形成过渡区。 该方法的特征在于在至少一个喷枪/风口的出口端上形成固体材料管,同时通过喷枪/风口注入含金属进料和含碳材料,从而延长喷枪/风口的有效长度, 长枪/风口

    IMPROVED PROCESS FOR DIRECT REDUCTION OF IRON OXIDE
    8.
    发明申请
    IMPROVED PROCESS FOR DIRECT REDUCTION OF IRON OXIDE 审中-公开
    直接还原氧化铁的改进方法

    公开(公告)号:WO2013013295A1

    公开(公告)日:2013-01-31

    申请号:PCT/CA2012/000678

    申请日:2012-07-16

    Inventor: GORDON, Iakov M.

    Abstract: A process for direct reduction of iron oxide in a shaft furnace. The furnace has a pre-reduction zone near its uppermost portion, a metallization zone below the pre-reduction zone, an intermediate zone which separates the pre-reduction zone from the metallization zone and which includes a restriction to inhibit rich fuel gas from passing from the pre-reduction zone to the metallization zone, and a cooling zone below the metallization zone at the lowest portion of the furnace. The process includes feeding iron oxide to the furnace, passing the iron oxide successively downwardly through the pre-reduction zone, the transition zone, the metallization zone, and the cooling zone while passing rich fuel gas produced by external partial combustion with a sub-stoichiometric volume of air upwardly through the pre-reduction zone in counter-current flow so as to partially reduce the iron oxide, and passing reducing gas downwardly through the metallization zone in co-current flow so as to substantially complete the reduction of the iron oxide to metallic iron. The reducing gas is first pre-heated in a gas heater and then subjected to partial combustion with oxygen to further increase its temperature. The process includes removing a metallized iron product from the cooling zone.

    Abstract translation: 在竖炉中直接还原氧化铁的方法。 该炉具有在其最上部附近的预还原区,在预还原区下方的金属化区,将预还原区与金属化区隔开的中间区,其包括抑制富燃燃料从 到金属化区的预还原区,以及在炉的最低部分处的金属化区下方的冷却区。 该方法包括向炉中加入氧化铁,使铁氧化物连续向下通过预还原区,过渡区,金属化区和冷却区,同时通过外部部分燃烧产生的富燃料气体以亚化学计量 空气的体积向上通过预还原区域以逆流流动,以便部分地还原氧化铁,并且使还原气体以并流流动向下通过金属化区域,以便基本上完成氧化铁的还原 金属铁。 还原气体首先在气体加热器中预热,然后用氧进行部分燃烧,以进一步提高其温度。 该方法包括从冷却区去除金属化的铁产品。

    METHOD AND APPARATUS FOR CHARGING HOT DIRECT REDUCED IRON FROM HOT TRANSPORT VESSELS INTO A MELTER OR FINISHER
    10.
    发明申请
    METHOD AND APPARATUS FOR CHARGING HOT DIRECT REDUCED IRON FROM HOT TRANSPORT VESSELS INTO A MELTER OR FINISHER 审中-公开
    将高温直接还原铁从高速运输船运往电缆或整理机的方法和装置

    公开(公告)号:WO2009005755A1

    公开(公告)日:2009-01-08

    申请号:PCT/US2008/008099

    申请日:2008-06-26

    Abstract: The present invention provides a method and apparatus for charging hot direct reduced iron (HDRI) from hot transport vessels (HTVs) into a melter or finisher. In general, the apparatus includes a charging stand including a plurality of bays for receiving and supporting a plurality of HTVs. Each HTV includes at least an outlet port configured to engage an inlet port of one of the plurality of bays of the charging stand via a telescoping seal that provides a substantially air-tight seal. A feed device is provided that moves the HDRI disposed within the HTVs from the outlet port/inlet port interface to a melter or finisher. The charging stand also includes one or more load cells operable for weighing the HTVs and the HDRI disposed therein, such that a computer or other logic may be used to control the feed rate of the HDRI charged into the melter or finisher.

    Abstract translation: 本发明提供了一种从热运输容器(HTV)向熔化器或整理器充电热的直接还原铁(HDRI)的方法和装置。 通常,该装置包括一个充电座,它包括多个用于接收和支撑多个HTV的托架。 每个HTV至少包括一个出口端口,该出口端口配置成通过提供基本上气密的密封件的伸缩式密封件接合充电支架的多个托架中的一个的入口端口。 提供了一种馈送装置,其将设置在HTV内的HDRI从出口/入口端口移动到胶机或整理器。 充电架还包括一个或多个称重传感器,可操作用于对设置在其中的HTV和HDRI进行称重,使得可以使用计算机或其他逻辑来控制装入胶机或整理器的HDRI的进料速率。

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