公开(公告)号：US20230407423A1

公开(公告)日：2023-12-21

申请号：US18038139

申请日：2021-11-24

Applicant: Technological Resources Pty. Limited

Inventor： Michael Buckley

IPC: C21B13/00 ,  C21B13/10 ,  C21B13/14 ,  C21B13/12 ,  F27D17/00 ,  F27B9/12 ,  F27D11/12 ,  F27B9/30

CPC classification number: C21B13/004 ,  C21B13/10 ,  C21B13/146 ,  C21B13/0046 ,  C21B13/12 ,  C21B13/008 ,  F27D17/004 ,  F27B9/12 ,  F27D11/12 ,  F27B9/3005 ,  C21B2100/60 ,  F27B2009/122 ,  F27D2099/0028

Abstract: A method and an apparatus for “recycling” a significant amount of heat within a linear hearth furnace by means of an endless conveyor that transports briquettes through the furnace from an inlet (briquette feed) end to an outlet (DRI discharge) end and then returns to the inlet end and transfers a significant amount of heat from the outlet end to the inlet end of the furnace.

公开(公告)号：US20180119248A1

公开(公告)日：2018-05-03

申请号：US15565444

申请日：2016-04-18

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Mohamed Bahgat SADDIK ,  Hesham Ahmed HANAFY

IPC: C22B1/245 ,  C22B1/24 ,  C21B13/00

CPC classification number: C22B1/245 ,  C21B13/0046 ,  C22B1/2406 ,  C22B1/2413 ,  Y02P10/136

Abstract: Disclosed herein are methods and compositions for producing composite pellets comprising a core comprising: iron ore and a carbonaceous reducing agent; and a shell comprising: iron ore; and having a core and shell transition in a manner such that no visible boundary exists between the core and the shell in a cross-section of the pellet. The methods can be used to produce composite pellets with improved productivity and quality, and the resulting composite pellets can be used to produce direct reduced iron (DRI).

公开(公告)号：US20160304977A1

公开(公告)日：2016-10-20

申请号：US15103386

申请日：2014-12-11

Applicant: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Inventor： Susumu KAMIKAWA ,  Hideaki MIZUKI ,  Keiichi SATO ,  Hideki ITOU ,  Khanhson PHAM

IPC: C21B13/00 ,  C21B13/10 ,  F27D21/00 ,  C21B7/00

CPC classification number: C21B13/004 ,  C21B7/002 ,  C21B11/08 ,  C21B13/0046 ,  C21B13/10 ,  C21B2100/04 ,  C21B2100/60 ,  C21B2100/64 ,  C22B1/16 ,  F27D21/00 ,  F27D2019/0015 ,  F27D2019/0031 ,  F27M2003/165

Abstract: Provided is a device for producing partially reduced iron, with which partially reduced iron having a prescribed reduction ratio can be produced efficiently. The present invention is equipped with: CO sensors that detect the carbon monoxide concentration in an exhaust gas; an O2 sensor that detects the oxygen concentration in an exhaust gas; an exhaust gas circulation device that adjusts the circulating amount of the exhaust gas supplied to a reduction furnace main body, and an air feed device that adjusts the amount of air that being fed; and a control device that controls these devices. The control devices on the basis of the carbon monoxide concentration in the exhaust gas as detected by the CO sensor and the oxygen concentration in the exhaust gas as detected by the O2 sensor.

Abstract translation: 提供一种能够有效地制造部分还原铁的装置，能够有效地制造具有规定的减速比的部分还原铁。 本发明装备有：CO传感器，其检测废气中的一氧化碳浓度; O 2传感器，其检测排气中的氧浓度; 调节供给到还原炉主体的废气的循环量的废气循环装置，以及调节供给的空气量的送风装置; 以及控制这些装置的控制装置。 基于由CO传感器检测的废气中的一氧化碳浓度和由O 2传感器检测的废气中的氧浓度，控制装置。

公开(公告)号：US20160251735A1

公开(公告)日：2016-09-01

申请号：US15027857

申请日：2014-11-04

Applicant: SAUDI BASIC INDUSTRIES CORPORATION

Inventor： Mohamed Bahgat Saddik ,  Syed Niaz Ahsan

IPC: C21B13/00 ,  C04B28/04 ,  C04B14/30 ,  C21B13/02

CPC classification number: C21B13/008 ,  C04B14/308 ,  C04B28/04 ,  C21B13/0046 ,  C21B13/02 ,  C22B1/2406 ,  Y02P10/136

Abstract: Disclosed herein are methods and compositions for producing coated iron oxide pellets comprising an outer coating comprising cement exhibiting a reduced sticking index while retaining a high level of metallization following reduction. The improved coated iron oxide pellets can be used to produce direct reduced iron (DRI) with improved productivity.

Abstract translation: 本文公开了用于生产涂覆的氧化铁颗粒的方法和组合物，其包含包含具有降低的粘附指数的水泥的外涂层，同时在还原之后保持高水平的金属化。 改进的涂覆氧化铁颗粒可用于生产直接还原铁（DRI），并提高生产率。

公开(公告)号：US20150322542A1

公开(公告)日：2015-11-12

申请号：US14650376

申请日：2014-01-30

Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)

Inventor： Shoichi KIKUCHI ,  Tsuyoshi MIMURA ,  Takao HARADA ,  Shingo YOSHIDA

IPC: C22B7/02 ,  C22B5/10

CPC classification number: C22B7/02 ,  C21B13/0046 ,  C21B13/105 ,  C22B1/24 ,  C22B1/245 ,  C22B5/10 ,  Y02P10/216

Abstract: Provided is a technique for increasing the yield of reduced iron, thereby improving productivity when manufacturing reduced iron by heating an agglomerate.This method for manufacturing reduced iron includes: a step in which a mixture is agglomerated, said mixture containing an iron oxide-containing substance, a carbonaceous reducing agent, and a melting point regulator; and a step in which reduced iron is manufactured by heating the obtained agglomerate, reducing and partially melting the iron oxide in the agglomerate, and aggregating the iron component. The particle size of the fine particulate iron generated in the step in which the reduced iron is manufactured is adjusted, and the fine particulate iron is blended into the mixture.

Abstract translation: 提供了提高还原铁产率的技术，从而通过加热附聚物制造还原铁来提高生产率。 制造还原铁的方法包括：混合物凝聚的步骤，所述混合物含有含氧化铁物质，碳质还原剂和熔点调节剂; 并且通过加热获得的附聚物来制造还原铁，还原和部分熔融附聚物中的氧化铁并使铁组分聚集的步骤。 在制造还原铁的步骤中产生的微细铁粒子的粒径被调节，细粒铁混合在混合物中。

公开(公告)号：US08999033B2

公开(公告)日：2015-04-07

申请号：US13325890

申请日：2011-12-14

Applicant: Masahiko Tetsumoto ,  Todd Astoria

Inventor： Masahiko Tetsumoto ,  Todd Astoria

IPC: C22B5/00 ,  C22B1/16 ,  C21B13/00

CPC classification number: C21B13/0066 ,  C21B13/0046 ,  C21C2100/06 ,  C22B1/16 ,  C22B5/00 ,  Y02P10/136

Abstract: The present invention provides a method for producing direct reduced iron and/or hot metal using high-moisture content carbonaceous material, including: agglomerating carbonaceous material from the high-moisture content carbonaceous material with a metal oxide-bearing material to form an agglomerate suitable for use in a direct reduction and/or hot metal producing process. The method also includes distilling the high-moisture content carbonaceous material. The method further includes dry quenching the carbonaceous material obtained from the distilling step. The method still further includes drying the high-moisture content carbonaceous material with energy from a hot off gas from a furnace for producing direct reduced iron and/or hot metal prior to the distilling step.

Abstract translation: 本发明提供了一种使用高含水量的碳质材料生产直接还原铁和/或热金属的方法，包括：用含金属氧化物的材料将含碳量高的含碳材料的碳质材料凝集成形成适于 用于直接还原和/或热金属生产过程。 该方法还包括蒸馏高含水量的碳质材料。 该方法还包括对从蒸馏步骤获得的含碳材料进行干式淬火。 该方法还包括在来自蒸馏步骤的直接还原铁和/或热金属生产的炉子的热气体的能量下干燥高含水量的碳质材料。

公开(公告)号：US08974571B2

公开(公告)日：2015-03-10

申请号：US13731801

申请日：2012-12-31

Applicant: Mitsubishi-Hitachi Metals Machinery, Inc.

Inventor： Susumu Kamikawa ,  Hiroshi Nakajima ,  Keiichi Sato ,  Khanhson Pham

IPC: C21B11/00 ,  F27D17/00 ,  C21B13/00 ,  C21B13/10 ,  F27B9/24 ,  F27B9/30

CPC classification number: C21B11/00 ,  C21B13/0046 ,  C21B13/0073 ,  C21B13/10 ,  F27B9/243 ,  F27B9/3011 ,  F27B2009/3027 ,  F27D17/004

Abstract: A partially-reduced iron producing apparatus includes: a supplying device laying ignition raw-material pellets on an endless-grate; a heating furnace heating the ignition raw-material pellets; another supplying device laying the raw material pellets on the ignition raw-material pellets; and an exhaust gas circulation device supplying an oxygen-containing gas to the raw-material pellets. The oxygen containing gas is made by circulating part of an exhaust gas discharged from the raw-material pellets and mixing it with air. A partially-reduced iron is produced by thermally reducing the raw-material pellets in a bed height direction thereof through separate combustion and heating regions. The combustion region formed on an upstream side in a travelling direction of the endless grate by supplying the oxygen-containing gas having a high oxygen concentration. The heating region formed downstream of the combustion region in the travelling direction of the endless grate by supplying the oxygen-containing gas having a low oxygen concentration.

Abstract translation: 一种部分还原的铁生产设备包括：将点燃原料颗粒放置在环形炉排上的供应装置; 加热炉加热着火原料颗粒; 将原料颗粒放置在点火原料颗粒上的另一供给装置; 以及向原料粒料供给含氧气体的排气循环装置。 含氧气体是通过将从原料颗粒排出的废气的一部分循环并将其与空气混合而制成的。 通过分开的燃烧和加热区域，通过在原料颗粒的床高度方向上热还原原料颗粒而产生部分还原的铁。 通过供给氧浓度高的含氧气体，形成在无端炉排的行进方向的上游侧的燃烧区域。 通过供给具有低氧浓度的含氧气体，在不连续炉排的行进方向上形成在燃烧区域下游的加热区域。

公开(公告)号：US20130160607A1

公开(公告)日：2013-06-27

申请号：US13809931

申请日：2011-07-08

Applicant: Hado Heckmann ,  Josef Stockinger

Inventor： Hado Heckmann ,  Josef Stockinger

IPC: C21B5/00

CPC classification number: C10L5/04 ,  C10L5/105 ,  C10L5/14 ,  C10L5/16 ,  C10L5/361 ,  C21B13/0046 ,  C21B13/0066 ,  C22B1/244 ,  C22B1/245

Abstract: A method for producing pressed articles containing coal particles, pressed articles obtained from such method, and the use of such pressed articles in methods for producing pig iron in a fixed bed or for producing carbon carriers for methods for producing pig iron in a fixed bed, are provided. To this end, a partial amount of the coal particles to be processed into pressed articles is impregnated with a substance before the material to be processed into pressed articles is mixed with a binder system containing water and finally being processed into pressed articles.

Abstract translation: 含有煤粒子的压制品的制造方法，由该方法获得的压制品，以及这种压制品在固定床中生产生铁的方法或在固定床中用于生产生铁的方法的碳载体的使用， 被提供。 为此，将待加工成压制品的煤粒子的一部分用物质浸渍，然后将待处理的材料与含有水的粘合剂体系混合，最后加工成压制制品。

公开(公告)号：US08470068B2

公开(公告)日：2013-06-25

申请号：US12359729

申请日：2009-01-26

Applicant: Iwao Iwasaki ,  Andrew J. Lindgren ,  Richard F. Kiesel

Inventor： Iwao Iwasaki ,  Andrew J. Lindgren ,  Richard F. Kiesel

IPC: C21B13/10 ,  C22C38/00

CPC classification number: C21B13/0046 ,  C21B13/006 ,  C21B13/008 ,  C21B13/105 ,  C22B1/245 ,  C22B5/10 ,  F27B9/028 ,  F27B9/045 ,  F27B9/12 ,  F27B9/20 ,  F27B9/40

Abstract: Method and system for producing metallic nuggets includes providing reducible mixture of reducing material (such as carbonaceous material) and reducible iron bearing material (such as iron oxide) that may be arranged in discrete portions, such as mounds or briquettes, on at least a portion of a hearth material layer (such as carbonaceous material). A coarse overlayer of carbonaceous material may be provided over at least some of the discrete portions. Heating the reducible mixture to 1425° C. or 1400° C. or 1375° C. results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15.

Abstract translation: 用于生产金属块的方法和系统包括提供可还原材料（例如碳质材料）和可还原的铁轴承材料（例如氧化铁）的可还原的混合物，其可以分散布置在例如土堆或团块的至少一部分上 的炉床材料层（如碳质材料）。 可以在至少一些离散部分上提供粗碳质材料的覆盖层。 将可还原的混合物加热至1425℃或1400℃或1375℃导致形成一种或多种可能具有小于0.03％的硫含量的金属铁块的中间产物和渣，其中 可以具有小于5％的质量的MgO，其可以具有至少约12或至少约15的金属块中硫的重量百分比硫与重量比的硫的比例。

公开(公告)号：US08277536B2

公开(公告)日：2012-10-02

申请号：US13117231

申请日：2011-05-27

Applicant: Takao Harada ,  Hidetoshi Tanaka ,  Kiminori Hajika ,  Tadashi Yaso ,  Toshiyuki Kurakake

Inventor： Takao Harada ,  Hidetoshi Tanaka ,  Kiminori Hajika ,  Tadashi Yaso ,  Toshiyuki Kurakake

IPC: C21B13/08 ,  C21B13/10 ,  C22B1/24

CPC classification number: C22B5/10 ,  C21B13/0046 ,  C21B13/0086 ,  C21B13/105 ,  C21B13/143 ,  C21B2100/44 ,  C21B2100/60 ,  C21B2100/66 ,  C21C2100/06 ,  C22B1/2406 ,  C22B1/245 ,  F27B3/22 ,  F27B7/00 ,  F27B19/04 ,  Y02P10/136 ,  Y02P10/216

Abstract: A process for producing molten iron with a combination of a moving-hearth reducing furnace and an iron bath-type melting furnace that includes charging a bedding carbonaceous material on a hearth of the moving-hearth reducing furnace and placing carbonaceous material-containing agglomerates containing a powdery iron oxide source and a powdery carbonaceous reductant on the bedding carbonaceous material; thermally reducing the carbonaceous material-containing agglomerates while moving the hearth in the moving-hearth reducing furnace to generate solid reduced iron and simultaneously thermally carbonizing the bedding carbonaceous material to generate char; hot-forming the solid reduced iron and the char into agglomerates without substantial cooling; continuously charging the agglomerates into the iron bath-type melting furnace from thereabove; and blowing oxygen-containing gas into the iron bath-type melting furnace to melt the solid reduced iron and to thereby generate molten iron.

Abstract translation: 一种通过移动底板还原炉和铁浴式熔融炉的组合生产铁水的方法，该方法包括在移动炉床还原炉的炉床上装入床层碳质材料，并放置含碳质的含有 粉状氧化铁源和层状碳质材料上的粉状碳质还原剂; 在移动炉床还原炉中移动炉床同时热还原含碳材料的附聚物，以产生固体还原铁，同时使含碳质材料热碳化以产生炭; 将固体还原铁和焦炭热成型为团聚体而没有实质的冷却; 将附聚物从上方连续地装入铁浴式熔融炉; 并将含氧气体吹入铁浴式熔融炉中以熔化固体还原铁并由此产生铁水。