公开(公告)号：US20230366049A1

公开(公告)日：2023-11-16

申请号：US18026061

申请日：2020-09-15

Applicant: ArcelorMittal

Inventor： Edouard IZARD ,  Dominique SERT ,  Jérôme DAULMERIE

IPC: C21B7/16 ,  C21B7/06 ,  F27B1/16 ,  F27B1/12

CPC classification number: C21B7/16 ,  C21B7/06 ,  F27B1/16 ,  F27B1/12

Abstract: A device to inject a reducing gas into a shaft furnace includes an external casing whose front face is provided with an outlet for gas injection into the shaft furnace, an internal casing located inside the external casing wherein reducing gas is circulating. The internal casing has an opening matching the gas injection outlet of the front face of the external casing. The front face of the external casing includes an upper and a lower part and the gas injection outlet is in the lower part and inwards from the upper part.

公开(公告)号：US09797023B2

公开(公告)日：2017-10-24

申请号：US14282585

申请日：2014-05-20

Applicant: Grede LLC

Inventor： Bill Connors ,  Kipp Witters

IPC: C21B11/02 ,  C21B5/00 ,  C21B7/16 ,  F27B1/16 ,  F27B1/28 ,  C21B13/02

CPC classification number: C21B5/001 ,  C21B5/006 ,  C21B7/16 ,  C21B11/02 ,  C21B13/023 ,  C21B2005/005 ,  F27B1/16 ,  F27B1/28 ,  Y02P10/143

Abstract: A method of operating a shaft furnace includes inserting a mixture including anthracite coal and coke into a cavity defined by the furnace, and disposing a metal feedstock within the cavity. The method includes injecting natural gas at a natural gas flow rate and a first quantity of oxygen gas at a first oxygen gas flow rate into the cavity simultaneously through at least one burner. The method also includes driving a second quantity of oxygen gas at a supersonic oxygen gas flow rate into the cavity through at least one lance, wherein the supersonic oxygen gas flow rate is greater than the first oxygen gas flow rate. The method also includes combusting the mixture within the cavity to produce a stack gas, melting the metal feedstock to produce a melted metal material, and monitoring the stack gas to thereby operate the shaft furnace. A shaft furnace is also disclosed.

公开(公告)号：US09650689B2

公开(公告)日：2017-05-16

申请号：US14233027

申请日：2012-07-11

Applicant: Daiki Fujiwara ,  Akinori Murao ,  Shiro Watakabe

Inventor： Daiki Fujiwara ,  Akinori Murao ,  Shiro Watakabe

IPC: C21B7/16 ,  C21B5/00

CPC classification number: C21B7/16 ,  C21B5/003 ,  C21B7/163

Abstract: A method of operating a blast furnace includes two or more lances that inject reducing agents from a tuyere; injecting a solid reducing agent and a flammable reducing agent from different lances; and disposing the lances so that an axial line that extends from an end of the lance that injects the solid reducing agent and is the axial line of the lance that injects the solid reducing agent and an axial line that extends from an end of the lance that injects the flammable reducing agent and is the axial line of the lance that injects the flammable reducing agent cross each other, and so that a main flow of the solid reducing agent injected and a main flow of the flammable reducing agent injected overlap.

公开(公告)号：US09617609B2

公开(公告)日：2017-04-11

申请号：US14412914

申请日：2013-09-19

Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor： Keiichi Nakagawa ,  Setsuo Omoto ,  Masakazu Sakaguchi ,  Tsutomu Hamada

IPC: C21B5/00 ,  C21B7/16 ,  C21B7/00

CPC classification number: C21B5/007 ,  C21B5/003 ,  C21B5/008 ,  C21B7/00 ,  C21B7/16

Abstract: On the basis of data obtained by means of analyzing coal, a first and second coal type satisfying conditions are selected, the ash melting point of the mixed coal resulting from mixing the first and second coal types is derived on the basis of a four-dimensional state diagram for SiO2—CaO—MgO-20% Al2O3, on the basis of the ash melting point of the mixed coal and the four-dimensional state diagram, an additive causing the ash melting point of the mixed coal to be at least 1400° C. at the lowest quantity when added to the mixed coal is selected from SiO2, MgO, and CaO, the addition quantity of the additive is derived, the first coal type and second coal type are mixed to result in the mixed coal, and the addition quantity of the additive is added to the mixed coal.

公开(公告)号：US20150211082A1

公开(公告)日：2015-07-30

申请号：US14683176

申请日：2015-04-10

Applicant: ATI PROPERTIES, INC.

Inventor： Roy J. Matway ,  Kenneth G. Malencia ,  Jay E. Rupert

IPC: C21C7/068 ,  C22B9/05 ,  C22B23/06 ,  C21C7/072

CPC classification number: C21C7/068 ,  C21B7/16 ,  C21C5/34 ,  C21C5/48 ,  C21C7/072 ,  C22B9/05 ,  C22B23/06 ,  C22C38/02

Abstract: A method of decarburizing a molten alloy may generally comprise injecting a first gas comprising at least one of argon, carbon dioxide, and oxygen through a first fluid-conducting portion of a tuyere into the molten alloy below the surface of the molten alloy, and injecting a second gas comprising at least one of argon and carbon dioxide through a second fluid-conducting portion of the tuyere into the molten alloy below the surface of the molten alloy. The tuyere may comprise an inner portion concentrically aligned within an outer portion to define an annulus therebetween. The first gas may be injected through the inner portion, and the second gas may be injected through the annulus.

Abstract translation: 熔融合金脱碳的方法通常可以包括通过风口的第一导流部分将包含氩气，二氧化碳和氧气中的至少一种的第一气体注入到熔融合金表面下方的熔融合金中，以及注入 包括氩气和二氧化碳中的至少一种的第二气体通过所述风口的第二流体传导部分进入熔融合金表面下方的熔融合金。 风口可以包括在外部部分中同心对准的内部部分，以在它们之间限定环形空间。 第一气体可以通过内部部分注入，并且第二气体可以通过环空进入。

公开(公告)号：US20150021837A1

公开(公告)日：2015-01-22

申请号：US14356757

申请日：2012-11-06

Applicant: PAUL WURTH S.A.

Inventor： Paul Tockert ,  Emile Lonardi ,  Benoît Jung

IPC: C21B7/16 ,  F16L27/00

CPC classification number: C21B7/16 ,  C21B7/163 ,  F16L27/00 ,  F27B1/16 ,  F27D2099/0081

Abstract: The sealed connection system between a tuyere of a shaft furnace, such as a steelmaking blast furnace, and an air blast pipe, in which a tip of the blast pipe is pressed towards a rear end of the tuyere, being centred thereon while still retaining freedom of pivoting movement relative thereto, including an added annular blast pipe seat, placed between the tip of the blast pipe and tuyere and immobile relative to the tuyere, the blast pipe tip resting against a rear face of the seat and an immobile gasket being placed between the seat and the tuyere such that the seat rests in sealed manner against a rear face of the tuyere, and a sleeve arranged around the contact zone between the blast pipe tip and the seat, is connected in sealed manner to the seat and to the blast pipe.

Abstract translation: 诸如炼钢高炉的立式炉风口和鼓风管之间的密封连接系统，其中鼓风管的顶端朝向风口的后端被挤压，同时保持自由度 包括一个添加的环形鼓风管座，放置在鼓风管的尖端和风口之间，相对于风口不能移动，鼓风管末端靠在座椅的后表面上，而不动垫圈位于 座椅和风口，使得座椅以密封的方式靠在风口的后表面，并且布置在鼓风管尖端和座椅之间的接触区周围的套筒以密封的方式连接到座椅和鼓风机 管。

公开(公告)号：US08313552B2

公开(公告)日：2012-11-20

申请号：US12742471

申请日：2008-11-04

Applicant: Leopold Werner Kepplinger

Inventor： Leopold Werner Kepplinger

IPC: C21B13/02 ,  C21C7/072

CPC classification number: F27D3/16 ,  C21B5/003 ,  C21B7/16 ,  F23M11/042 ,  F27B1/16

Abstract: A method and an apparatus for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier, with the introduction of oxygen-containing gas streams through oxygen nozzles into the solid bed. At least one oxygen nozzle has a single gas supply and introduces at least two gas streams. Using plural gas streams from a nozzle reduces the risk of fluidization of the solid bed because the number of gas raceways in materials in the gasifier is increased.

Abstract translation: 一种用于在熔融气化炉中生产和熔化液体生铁或液态钢中间产物的方法和装置，其中通过氧气喷嘴将含氧气体流引入固体床。 至少一个氧气喷嘴具有单个气体供应并且引入至少两个气流。 使用来自喷嘴的多个气流降低了固体床流化的风险，因为气化器中材料中的气体滚道的数量增加。

公开(公告)号：US20050206051A1

公开(公告)日：2005-09-22

申请号：US10998841

申请日：2004-11-30

Applicant: Herman Ohrt ,  Lou Gecan ,  Jennifer Gecan

Inventor： Herman Ohrt ,  Lou Gecan ,  Jennifer Gecan

IPC: C21B7/16 ,  F27B1/16 ,  F27B1/24 ,  F27D3/16 ,  F27D9/00 ,  F27D19/00 ,  F27D25/00 ,  F27D99/00

CPC classification number: C21B7/163 ,  C21B7/16 ,  F27B1/16 ,  F27B1/24 ,  F27D3/16 ,  F27D9/00 ,  F27D19/00 ,  F27D25/001 ,  F27D2099/0053

Abstract: A tuyere cooling system which includes a coolant circuit for a body section and nose section. A valve is operable to connect the coolant circuits in series or to disconnect flows to the nose section of the tuyere so that if the nose of the tuyere tears during operation, the flow of coolant to the nose section of the tuyere may be cut off without affecting the overall operation of the blast furnace.

Abstract translation: 一种风口冷却系统，其包括用于主体部分和鼻部的冷却剂回路。 阀可操作以串联连接冷却剂回路或者断开到风口的鼻部的流动，使得如果在操作期间风口的鼻部发生撕裂，则可以切断到风口鼻部的冷却剂流而不用 影响高炉的整体运行。

公开(公告)号：US06594596B1

公开(公告)日：2003-07-15

申请号：US10144945

申请日：2002-05-13

Applicant: Luis Paredes Rojas ,  Alfredo Zolezzi Garreton

Inventor： Luis Paredes Rojas ,  Alfredo Zolezzi Garreton

IPC: G06F1900

CPC classification number: C21C5/4673 ,  C21B7/16 ,  C21B7/24 ,  C21C5/48 ,  F27D3/1545 ,  F27D21/00 ,  F27D2003/166 ,  F27D2019/0028

Abstract: A non-invasive online system for discrete measurements of phase levels in a converter or pyrometallurgical furnace in smelting and conversion processes, consisting in a electrical signal generator, transducers that convert said electrical signals in mechanical waves placed on the outer end of air blowing tuyeres, a coupling between said system and the shell of the converter, for air blowing tuyeres placed forming an angle less than or equal to 90° with the transducer and entrance of the airflow to the converter, while the transducer is placed in the direction of the cross axis or longitudinal axis of the phases plane for applying mechanical waves that travel in a longitudinal direction, a sensor for mechanical waves placed around the external wall of the shell of the converter that receives the reflected signal, then preamplification of the signal, an analogous/digital interface, for data acquisition, for processing the signals so as to determine the amplitude of the reflected signal which has a characteristic and different level for each phase and correlate the amplitude so as to determine the limiting zone between the different phases that face at least one transducer, a memory to store the discrete values of the phase levels and a display for displaying the discrete values of the phase levels.

Abstract translation: 一种用于在冶炼和转化过程中在转炉或火法冶金炉中离散测量相位水平的非侵入式在线系统，包括电信号发生器，将放置在吹风风口外端上的机械波的所述电信号转换的换能器， 所述系统和转换器壳体之间的联接器，用于吹风风口，其与传感器形成小于或等于90°的角度，并将气流进入转换器，同时换能器被放置在十字形的方向 用于施加沿纵向移动的机械波的相平面的轴线或纵向轴线，用于接收反射信号的转换器壳体的外壁周围的机械波传感器，然后信号的预放大，类似/ 数字接口，用于数据采集，用于处理信号，以便确定反射信号的幅度 其具有每个相位的特征和不同的电平，并且使振幅相关联，以便确定面向至少一个换能器的不同相之间的限制区域，存储相位电平的离散值的存储器和用于显示离散的显示器 相位值的值。

公开(公告)号：US06342086B1

公开(公告)日：2002-01-29

申请号：US09251193

申请日：1999-02-16

Applicant: Valery G. Shver

Inventor： Valery G. Shver

IPC: C21B1112

CPC classification number: C21C5/5217 ,  C21B7/16 ,  C21B11/10 ,  C21C5/4606 ,  Y02P10/216

Abstract: An improved method and apparatus for EAF steelmaking wherein the method provides additional thermal energy to the steel making process, carbon injection for the formation of foamy slag, and oxygen injection for the decarburization of the melt, the formation of foamy slag and post combustion burning of carbon monoxide. The apparatus comprises a unique burner configuration which has a central conduit for alternatively supplying fluid hydrocarbon fuel or particulate carbon with a carrier gas which are discharged through a exit opening. The fuel or carbon is mixed with a high speed, preferably supersonic, stream of oxidizing gas. The high speed stream of oxidizing gas is provided by an annular supersonic nozzle which causes the oxidizing gas to surround the fuel or the particulates with an annular flow. The annular nozzle design can be adjusted to direct the flows of particulates and oxidizing gases in the areas and shapes desired for efficient management of the steelmaking process. Optionally, the burner can have another conduit for the secondary supply of a pressurized flow of hydrocarbon fluid fuel to a series of apertures which surround the annular flow. Further, optionally, the burner can have another conduit for the supply of a pressurized flow of a secondary oxidizing gas to a series of apertures which surround the annular flow.

Abstract translation: 一种用于EAF炼钢的改进方法和装置，其中该方法为炼钢过程提供额外的热能，用于形成泡沫炉渣的碳注入和用于熔体脱碳的氧气注入，泡沫渣的形成和后燃烧燃烧 一氧化碳。 该装置包括独特的燃烧器配置，该燃烧器配置具有中心导管，用于交替地将流体烃燃料或颗粒碳与通过出口开口排出的载气供应。 燃料或碳与高速，优选超音速的氧化气流混合。 氧化气体的高速流由环形超音速喷嘴提供，其使得氧化气体围绕燃料或具有环形流的微粒。 可以调整环形喷嘴设计以将颗粒和氧化气体流引导到所需的区域和形状中，以有效地管理炼钢工艺。 可选地，燃烧器可以具有用于二次供应烃流体燃料的加压流到围绕环形流的一系列孔的另一导管。 此外，可选地，燃烧器可以具有用于将二次氧化气体的加压流供给到围绕环形流的一系列孔的另一导管。