公开(公告)号：US20240271232A1

公开(公告)日：2024-08-15

申请号：US18290516

申请日：2022-05-11

申请人： ThyssenKrupp Steel Europe AG

发明人： Nils JÄGER ,  Daniel SCHUBERT ,  Matthias WEINBERG

IPC分类号： C21C5/28 ,  C21B5/00 ,  C21B7/00 ,  C21B13/00

CPC分类号： C21C5/28 ,  C21B5/001 ,  C21B7/002 ,  C21B13/004 ,  C21B2005/005 ,  C21B2100/282 ,  C21B2100/80 ,  C21C2100/04

摘要： The present disclosure relates to a method for producing steel in an integrated metallurgical plant comprising at least one direct reduction reactor for directly reducing iron ore to give sponge iron, at least one electric furnace for melting the sponge iron to give pig iron or crude steel, at least one blast furnace for smelting iron ore to give pig iron, and at least one converter for refining pig iron to give crude steel. In accordance with the invention, the process gas discharged from the direct reduction reactor is admixed at least partly to the hot blast air and/or at least partly to an optional charging material, said air and/or said material being blown into the blast furnace.

公开(公告)号：US20170073283A1

公开(公告)日：2017-03-16

申请号：US15308880

申请日：2015-05-05

申请人： SABIC GLOBAL TECHNOLOGIES B.V.

发明人： YongMan Choi ,  Adel Abdullah Al-Ghamdi ,  Ramsey Bunama ,  Khalid M. El-Yahyaoui

IPC分类号： C07C5/333 ,  H05H1/24 ,  B01J19/08

CPC分类号： C07C5/333 ,  B01J19/088 ,  B01J23/72 ,  B01J2219/00123 ,  B01J2219/0805 ,  B01J2219/0871 ,  B01J2219/0894 ,  C07C5/3332 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2523/26 ,  C21C5/28 ,  H05H1/2406 ,  H05H2245/1215 ,  C07C11/09

摘要： The present disclosure addresses the deficiencies described above by providing systems and methods for enhancing the efficiency and yield of alkene production. The methods and systems provide for the use of activated CO2 in a dehydrogenation reactor along with an alkane stream. Through the use of the methods and systems of the invention, catalyst deactivation by coke deposition is reduced and the selectivity and efficiency of the dehydrogenation reaction is improved.

摘要翻译： 本公开通过提供用于提高烯烃生产的效率和产率的系统和方法来解决上述缺陷。 所述方法和系统提供了在脱氢反应器中与烷烃流一起使用活化的CO 2。 通过使用本发明的方法和系统，减少焦炭沉积的催化剂失活，提高脱氢反应的选择性和效率。

公开(公告)号：US20170029919A1

公开(公告)日：2017-02-02

申请号：US15114287

申请日：2014-06-27

申请人： INSTITUTE OF RESEARCH OF IRON AND STEEL JIANGSU PROVINCE/SHA-STEEL, CO. LTD

发明人： Jianchun ZHANG ,  Han MA ,  Wenke HUANG ,  Yang LI ,  Longfei ZUO

IPC分类号： C21D9/52 ,  C22C38/28 ,  C22C38/24 ,  C22C38/22 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/06 ,  C21C7/064 ,  C21C7/06 ,  C21C7/068 ,  C21C7/10 ,  C21C5/28 ,  B22D11/00 ,  C22C38/38

CPC分类号： C21D9/525 ,  B22D11/001 ,  C21C1/02 ,  C21C5/28 ,  C21C5/30 ,  C21C7/06 ,  C21C7/064 ,  C21C7/068 ,  C21C7/10 ,  C21D8/065 ,  C21D8/08 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/38

摘要： The present invention relates to a steel rebar comprising the following ingredients: 0.005%-0.030% of C, 0.3%-0.6% of Si, 1.2%-2.5% of Mn, 0.01% or less of P, 0.01% or less of S, 8.0%-10.0% of Cr, 1.0%-3.0% of Mo, 0.2%-0.4% of Sn, 0.01%-0.05% of Rare Earth element, and the remainder being Fe and unavoidable impurities. The present invention also provides a production method of steel rebar. The steel rebar of the present invention has excellent comprehensive mechanical properties and corrosion resistance performance, while meeting the requirements of anti-knock, the service life in sea water of the steel rebar is increased, thus it can be widely used in reinforced concrete structures in ocean environment.

摘要翻译： 本发明涉及一种钢筋，包括以下成分：C：0.005％-0.030％，Si：0.3％〜0.6％，Mn：1.2％〜2.5％，P：0.01％以下，S：0.01％以下 ，8.0％-10.0％的Cr，1.0％-3.0％的Mo，0.2％-0.4％的Sn，0.01％-0.05％的稀土元素，其余的是Fe和不可避免的杂质。 本发明还提供钢筋的制造方法。 本发明的钢筋具有优异的综合力学性能和耐腐蚀性能，同时满足防爆要求，钢筋钢水使用寿命提高，可广泛应用于钢筋混凝土结构 海洋环境。

公开(公告)号：US09156090B2

公开(公告)日：2015-10-13

申请号：US13824192

申请日：2011-09-15

申请人： Ha Neul Kim ,  Eon Sik Lee ,  Oh-Joon Kwan ,  Sun Jong Park ,  Hee Soo Kang

发明人： Ha Neul Kim ,  Eon Sik Lee ,  Oh-Joon Kwan ,  Sun Jong Park ,  Hee Soo Kang

IPC分类号： B22F9/08 ,  C21C5/28

CPC分类号： B22F9/082 ,  B22F2009/0828 ,  B22F2009/0888 ,  C21C5/28 ,  Y02P10/216

摘要： A method of manufacturing iron-based powder includes providing an iron-based molten steel manufactured through a iron making process and a steelmaking process to a tundish; and performing water atomization over the molten steel discharged through a nozzle connected to the tundish. The iron-based powder is manufactured from the molten steel refined after a molten iron tapped from a iron making process is charged into a converter without a pre-treatment process of the molten iron, thus economically providing the highly clean iron-based powder.

摘要翻译： 制造铁基粉末的方法包括：通过炼铁工艺和炼钢工艺制造的铁基钢水到中间包; 并在通过与中间包连接的喷嘴排出的钢水上进行水雾化。 铁水粉末由炼铁过程中的铁水从炼铁过程中抽出的铁水加入到转炉中，而不用铁水的预处理，从而经济地提供高度清洁的铁基粉末。

公开(公告)号：US08641800B2

公开(公告)日：2014-02-04

申请号：US13169696

申请日：2011-06-27

申请人： Joseph Boston McMahon

发明人： Joseph Boston McMahon

IPC分类号： C22B9/00 ,  C21B7/14

CPC分类号： C22C33/04 ,  C21C5/28 ,  C21C5/52 ,  C21C7/06 ,  C21C7/076 ,  C22C38/04 ,  Y02P10/216 ,  Y02P10/242

摘要： A method of alloying an iron majority compound with an oxide is provided. The method may include: heating the iron majority compound to a molten state; adding an oxide containing manganese to the molten iron majority compound; adding slag forming materials and reducers to the molten iron majority compound; controlling the iron majority compound to achieve a desired temperature environment for a desired period of time; and removing slag from the iron majority compound.

摘要翻译： 提供了一种使铁多数化合物与氧化物合金化的方法。 该方法可以包括：将铁多数化合物加热至熔融状态; 向铁水中添加含锰的氧化物; 向铁水多数化合物中加入成渣材料和还原剂; 控制铁多数化合物以达到期望的温度环境所需的时间; 并从铁多数化合物中除去渣。

公开(公告)号：US20120325054A1

公开(公告)日：2012-12-27

申请号：US13169696

申请日：2011-06-27

申请人： Joseph B. McMahan

发明人： Joseph B. McMahan

IPC分类号： C22B9/00

CPC分类号： C22C33/04 ,  C21C5/28 ,  C21C5/52 ,  C21C7/06 ,  C21C7/076 ,  C22C38/04 ,  Y02P10/216 ,  Y02P10/242

摘要： A method of alloying an iron majority compound with an oxide is provided. The method may include: heating the iron majority compound to a molten state; adding an oxide containing manganese to the molten iron majority compound; adding slag forming materials and reducers to the molten iron majority compound; controlling the iron majority compound to achieve a desired temperature environment for a desired period of time; and removing slag from the iron majority compound.

摘要翻译： 提供了一种使铁多数化合物与氧化物合金化的方法。 该方法可以包括：将铁多数化合物加热至熔融状态; 向铁水中添加含锰的氧化物; 向铁水多数化合物中加入成渣材料和还原剂; 控制铁多数化合物以达到期望的温度环境所需的时间; 并从铁多数化合物中除去渣。

公开(公告)号：US20110197713A1

公开(公告)日：2011-08-18

申请号：US13057955

申请日：2009-08-07

申请人： Veena Sahajwalla ,  Paul O'kane

发明人： Veena Sahajwalla ,  Paul O'kane

IPC分类号： C21B13/00

CPC分类号： C21C7/0075 ,  C21C5/28 ,  C21C5/5211 ,  C21C5/5264 ,  C21C7/00 ,  C21C7/0025 ,  C21C2007/0031 ,  C21C2007/0062 ,  Y02P10/216

摘要： A method for recarburising a molten ferro-alloy in a ladle or ladle furnace comprises the step of adding a carbon-containing polymer to the ladle or furnace. The polymer is adapted to function as a recarburiser of the ferro-alloy. In this regard, the polymer can have a format which, when it contacts the molten ferro-alloy, promotes dissolution of carbon from the polymer into the molten ferro-alloy.

摘要翻译： 在钢包或钢包炉中再熔炼熔融铁合金的方法包括将含碳聚合物添加到钢包或炉中的步骤。 该聚合物适合用作铁合金的再烧结剂。 在这方面，聚合物可以具有当与熔融的铁合金接触时促进碳从聚合物溶解到熔融的铁合金中的形式。

公开(公告)号：US06241805B1

公开(公告)日：2001-06-05

申请号：US09359776

申请日：1999-07-26

申请人： John D. Lynn ,  Colvin W. Smith

发明人： John D. Lynn ,  Colvin W. Smith

IPC分类号： C21C530

CPC分类号： C22B7/04 ,  C21C5/28 ,  C21C5/36 ,  Y02P10/216

摘要： A method is provided for improving the efficiency of a basic oxygen furnace operation and/or regulating its rate of molten iron consumption to accommodate interruptions in downstream production. The method comprises the steps of combining a wet scrubber sludge with hot slag to provide a slag/sludge mixture, commencing a steelmaking operation of the basic oxygen furnace (BOF), and introducing the slag/sludge mixture into the BOF during the steelmaking operation so that the BOF produces a desired quantity and quality of steel in a manner that is more efficient than without the slag/sludge mixture. Also provided is a system for improving the efficiency of a BOF operation. The system comprises a mixer and an introduction mechanism. The mixer is connected to a source of wet scrubber sludge and a source of hot slag. The mixer is adapted to combine the wet scrubber sludge with the hot slag to provide a slag/sludge mixture. The introduction mechanism is adapted to transport the slag/sludge mixture from the mixer to a BOF and is adapted to introduce the slag/sludge mixture into the BOF during a steelmaking operation of the BOF. The mixer and introduction mechanism are operable in conjunction with the BOF so that the BOF produces a desired quantity and quality of steel in a manner that is more efficient than without the slag/sludge mixture. Improvements in efficiency include reduced heat cycle times, reduced oxygen blow times, reduced demand for raw materials outside of the slag/sludge mixture, reduced disposal and transportation costs, and increased productivity.

摘要翻译： 提供了一种提高碱性氧炉操作的效率和/或调节其铁水消耗速率以适应下游生产中断的方法。 该方法包括以下步骤：将湿式洗涤器污泥与热渣混合以提供炉渣/污泥混合物，开始对碱性氧气炉（BOF）的炼钢操作，以及在炼钢操作期间将炉渣/污泥混合物引入BOF中 BOF以比没有炉渣/污泥混合物更有效的方式产生所需数量和质量的钢。 还提供了一种用于提高BOF操作的效率的系统。 该系统包括混合器和引入机构。 混合器连接到湿式洗涤器污泥源和热渣源。 混合器适于将湿式洗涤器污泥与热渣组合以提供炉渣/污泥混合物。 引入机构适用于将渣/淤泥混合物从混合器输送到BOF，并且适于在BOF的炼钢操作期间将渣/污泥混合物引入BOF中。 混合器和引入机构可与BOF结合使用，使得BOF以比没有渣/污泥混合物更有效的方式产生所需量和质量的钢。 效率的提高包括减少热循环时间，减少氧气吹扫时间，减少对渣/污泥混合物外部原料的需求，降低处理和运输成本，提高生产率。

公开(公告)号：US06136066A

公开(公告)日：2000-10-24

申请号：US70661

申请日：1998-04-30

申请人： John D. Lynn ,  Colvin W. Smith ,  Glenn C. Keyser

发明人： John D. Lynn ,  Colvin W. Smith ,  Glenn C. Keyser

IPC分类号： C22B1/00 ,  C21C5/28 ,  C21C5/36 ,  C22B1/243 ,  C22B7/02 ,  C22B7/04 ,  C21C5/30

CPC分类号： C22B1/243 ,  C21C5/28 ,  C22B7/04 ,  Y02P10/216 ,  Y02P10/234 ,  Y10S75/952 ,  Y10S75/961

摘要： The invention is directed to a process for dehydrating and recycling back into a BOF converter wet BOF scrubber sludge to produce a steelmaking revert having an improved flow rate when handled in a recycle stream. Wet sludge is combined with hot BOF slag to provide a slag/sludge mixture. The wet sludge causes the mixture to have a moisture content greater than 10% water by weight, and the hot slag, having a temperature below the molten liquid state, vaporizes the water in the mixture and reduces the moisture content to about 4% water by weight or less. The dehydrated mixture has improved flow rate properties when it is recycled as a steelmaking revert.

摘要翻译： 本发明涉及一种将BOF转化器湿BOF洗涤器污泥脱水回收并再循环的方法，以在循环流中处理时产生具有改善的流速的炼钢回收器。 湿渣与热BOF渣混合，提供渣/污泥混合物。 湿污泥使得混合物的水分含量大于10重量％，并且具有低于熔融液体状态的温度的热渣蒸发混合物中的水，并通过以下方式将水分含量降低至约4％ 重量以下。 脱水混合物在作为炼钢回收再循环时具有改善的流动性能。

公开(公告)号：US5968227A

公开(公告)日：1999-10-19

申请号：US970098

申请日：1997-11-13

申请人： Daniel A. Goldstein ,  Alok Sharan ,  Elizabeth Ann Fuchs

发明人： Daniel A. Goldstein ,  Alok Sharan ,  Elizabeth Ann Fuchs

IPC分类号： B22D2/00 ,  C21C5/28 ,  C21C5/46 ,  G01J5/00

CPC分类号： G01J5/02 ,  B22D2/001 ,  C21C5/28 ,  C21C5/4673 ,  G01J5/004 ,  G01J5/025 ,  G01J5/08 ,  G01J5/0875 ,  G01J2005/0077 ,  G01J5/046

摘要： A system and method for detecting molten slag in a tap stream between a steel making basic oxygen furnace (BOF) and corresponding ladle. BOFs are used in the manufacture of steel. An infrared (IR) imaging or detecting device is used to image/view the BOF-to-ladle tap stream, the steam transmitting energy indicative of whether molten steel and/or slag is in the stream at a given time. The imaging device uses mainly long IR wavelengths (e.g. wavelengths of from about 8 to 14 .mu.m) when imaging the molten tap stream, because these wavelengths are less susceptible to being blocked or absorbed by airborne gases and particles frequently found in BOF environments. In certain embodiments, all IR wavelengths other than those greater than about 8 .mu.m are filtered out and are not used to detect slag in the tap stream.

摘要翻译： 一种用于检测炼钢碱性氧炉（BOF）和相应钢包之间的自来水中的熔渣的系统和方法。 BOF用于钢的制造。 使用红外（IR）成像或检测装置对BOF至钢包水龙头流进行成像/观察，指示在给定时间内钢水和/或炉渣是否处于流中的蒸汽透过能量。 因为这些波长较少被BOF环境中经常发现的气载气体和颗粒所吸收，所以成像装置主要使用长的IR波长（例如约8至14μm的波长）。 在某些实施方案中，除了那些大于约8μm的那些以外的所有IR波长都被过滤掉，并且不用于检测塔流中的渣。