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1. 发明授权

US09797023B2 Shaft furnace and method of operating same 有权
公开(公告)号：US09797023B2
公开(公告)日：2017-10-24
申请号：US14282585
申请日：2014-05-20
申请人： Grede LLC
发明人： Bill Connors , Kipp Witters
IPC分类号： C21B11/02 , C21B5/00 , C21B7/16 , F27B1/16 , F27B1/28 , C21B13/02
CPC分类号： C21B5/001 , C21B5/006 , C21B7/16 , C21B11/02 , C21B13/023 , C21B2005/005 , F27B1/16 , F27B1/28 , Y02P10/143
摘要： 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.

2. 发明授权

US09650689B2 Method for operating a blast furnace 有权
公开(公告)号：US09650689B2
公开(公告)日：2017-05-16
申请号：US14233027
申请日：2012-07-11
申请人： Daiki Fujiwara , Akinori Murao , Shiro Watakabe
发明人： Daiki Fujiwara , Akinori Murao , Shiro Watakabe
IPC分类号： C21B7/16 , C21B5/00
CPC分类号： C21B7/16 , C21B5/003 , C21B7/163
摘要： 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.

3. 发明授权

US09617609B2 Method for preparing blast furnace blow-in coal 有权
公开(公告)号：US09617609B2
公开(公告)日：2017-04-11
申请号：US14412914
申请日：2013-09-19
申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.
发明人： Keiichi Nakagawa , Setsuo Omoto , Masakazu Sakaguchi , Tsutomu Hamada
IPC分类号： C21B5/00 , C21B7/16 , C21B7/00
CPC分类号： C21B5/007 , C21B5/003 , C21B5/008 , C21B7/00 , C21B7/16
摘要： 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.

4. 发明申请

US20150211082A1 ALLOY REFINING METHODS 有权
标题翻译：合金精炼方法
公开(公告)号：US20150211082A1
公开(公告)日：2015-07-30
申请号：US14683176
申请日：2015-04-10
申请人： ATI PROPERTIES, INC.
发明人： Roy J. Matway , Kenneth G. Malencia , Jay E. Rupert
IPC分类号： C21C7/068 , C22B9/05 , C22B23/06 , C21C7/072
CPC分类号： C21C7/068 , C21B7/16 , C21C5/34 , C21C5/48 , C21C7/072 , C22B9/05 , C22B23/06 , C22C38/02
摘要： 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.
摘要翻译：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。

5. 发明申请

US20150021837A1 SYSTEM OF LEAKTIGHT CONNECTION BETWEEN A TUYERE AND A HOT BLAST INLET NOZZLE FOR A SHAFT FURNACE, AND STEEL-MAKING BLAST FURNACE COMPRISING SUCH A SYSTEM 有权
标题翻译：锅炉与热风喷嘴之间的泄漏连接系统，以及包含这种系统的钢制吹风炉
公开(公告)号：US20150021837A1
公开(公告)日：2015-01-22
申请号：US14356757
申请日：2012-11-06
申请人： PAUL WURTH S.A.
发明人： Paul Tockert , Emile Lonardi , Benoît Jung
IPC分类号： C21B7/16 , F16L27/00
CPC分类号： C21B7/16 , C21B7/163 , F16L27/00 , F27B1/16 , F27D2099/0081
摘要： 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.
摘要翻译：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。

6. 发明授权

US08313552B2 Method for the production and the melting of liquid pig iron or of liquid steel intermediate products in a melt-down gasifier 失效
标题翻译：在熔融气化炉中生产和熔化液态生铁或液态钢中间产品的方法
公开(公告)号：US08313552B2
公开(公告)日：2012-11-20
申请号：US12742471
申请日：2008-11-04
申请人： Leopold Werner Kepplinger
发明人： Leopold Werner Kepplinger
IPC分类号： C21B13/02 , C21C7/072
CPC分类号： F27D3/16 , C21B5/003 , C21B7/16 , F23M11/042 , F27B1/16
摘要： 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.
摘要翻译：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。

7. 发明申请

US20050206051A1 Tuyere cooling system 有权
标题翻译： Tuyere冷却系统
公开(公告)号：US20050206051A1
公开(公告)日：2005-09-22
申请号：US10998841
申请日：2004-11-30
申请人： Herman Ohrt , Lou Gecan , Jennifer Gecan
发明人： Herman Ohrt , Lou Gecan , Jennifer Gecan
IPC分类号： C21B7/16 , F27B1/16 , F27B1/24 , F27D3/16 , F27D9/00 , F27D19/00 , F27D25/00 , F27D99/00
CPC分类号： C21B7/163 , C21B7/16 , F27B1/16 , F27B1/24 , F27D3/16 , F27D9/00 , F27D19/00 , F27D25/001 , F27D2099/0053
摘要： 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.
摘要翻译：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。

8. 发明授权

US06594596B1 System for a non-invasive online discrete measurement of phase levels in converters or pyrometallurgical furnaces 失效
标题翻译：用于转换器或火法冶金炉中相位水平的非侵入式在线离散测量系统
公开(公告)号：US06594596B1
公开(公告)日：2003-07-15
申请号：US10144945
申请日：2002-05-13
申请人： Luis Paredes Rojas , Alfredo Zolezzi Garreton
发明人： Luis Paredes Rojas , Alfredo Zolezzi Garreton
IPC分类号： G06F1900
CPC分类号： C21C5/4673 , C21B7/16 , C21B7/24 , C21C5/48 , F27D3/1545 , F27D21/00 , F27D2003/166 , F27D2019/0028
摘要： 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.
摘要翻译：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。

9. 发明授权

US06342086B1 Method and apparatus for improved EAF steelmaking 有权
标题翻译：改进电弧炉炼钢的方法和装置
公开(公告)号：US06342086B1
公开(公告)日：2002-01-29
申请号：US09251193
申请日：1999-02-16
申请人： Valery G. Shver
发明人： Valery G. Shver
IPC分类号： C21B1112
CPC分类号： C21C5/5217 , C21B7/16 , C21B11/10 , C21C5/4606 , Y02P10/216
摘要： 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.
摘要翻译：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。

10. 发明授权

US5333840A Blast pipe and tuyere arrangement for a blast furnace and method 失效
标题翻译：用于高炉的鼓风管和风口布置方法
公开(公告)号：US5333840A
公开(公告)日：1994-08-02
申请号：US91671
申请日：1993-07-14
申请人： Bror E. Skold , Nils O. Lindfors , Jan O. Wikstrom
发明人： Bror E. Skold , Nils O. Lindfors , Jan O. Wikstrom
IPC分类号： C21B7/00 , C21B5/00 , C21B7/16
CPC分类号： C21B5/003 , C21B7/16
摘要： Fuel and combustion gas are supplied to the blast pipes and tuyeres of a blast furnace through injection lances which have an inner tube and an outer tube. The inner tube is generally used to carry the fuel, while the space formed between the inner and outer tubes is used to carry the combustion gas. Such a lance can have a heat resistant tip which has a bore for forming an extension of the inner fuel supply tube, and which also has a number of helical channels disposed about the bore for forming an extension of the space between the tubes. It is advantageous to have more than one such lance in each blast pipe and to have the lances extend obliquely into the hot blast channel that is formed by the blast pipe and the tuyere.
摘要翻译：燃料和燃烧气体通过具有内管和外管的注射枪供应到高炉的鼓风管和风嘴。内管通常用于承载燃料，而内管和外管之间形成的空间用于承载燃烧气体。这样的喷枪可以具有耐热尖端，其具有用于形成内部燃料供应管的延伸部的孔，并且还具有围绕所述孔设置的多个螺旋通道，用于形成管之间的空间的延伸。在每个鼓风管中具有多于一个这样的喷枪是有利的，并且使喷枪倾斜地延伸到由鼓风管和风口形成的热风道中。

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