公开(公告)号：US11761047B2

公开(公告)日：2023-09-19

申请号：US17537329

申请日：2021-11-29

申请人： SMS group GmbH

发明人： Steffen Krausa ,  Christian Osterloh ,  William Todd Zeisler

IPC分类号： C21C5/46 ,  C21C5/50

CPC分类号： C21C5/4633 ,  C21C5/50

摘要： A converter includes a container and a supporting ring. A suspension device for the converter has a central structure fixed to the container. A first lateral structure is arranged at a first side of the central structure and fixed to a surface of the supporting ring. A second lateral structure is oppositely arranged. First and second sliding blocks are respectively connected with the first and second lateral structure. A first contact body is connected with the central structure by a first threaded bolt which engages a threaded hole in the central structure and a threaded hole in the first contact body. A second contact body is connected with the central structure by a second threaded bolt which engages a threaded hole in the central structure and a threaded hole in the second contact body. A distance element is arranged between the central structure and the first and/or second contact body.

公开(公告)号：US20230287529A1

公开(公告)日：2023-09-14

申请号：US17927057

申请日：2021-07-22

申请人： SOOCHOW UNIVERSITY

发明人： Shaoyan HU ,  Rong ZHU ,  Deyong WANG

IPC分类号： C21C5/34 ,  C21C5/46

CPC分类号： C21C5/34 ,  C21C5/4606 ,  C21C2005/4626

摘要： A blowing control method for maintaining a mushroom head of a bottom-blowing nozzle converter is disclosed. Considering the actual state of the mushroom head at the end of the bottom-blowing nozzle tip, the real-time molten steel overheating change during the blowing process, the process requirements of different stages of blowing conversion, and the macroscopic heat balance of the converter, the oxygen-carbon dioxide-lime powder blowing parameters of the inner tube of the bottom-blowing nozzle are dynamically adjusted during the converter smelting process of the bottom-blowing nozzle converter so as to control the cooling intensity, thus achieving precise control of the size of the mushroom head. The present invention maintains the basic stability of the size of the mushroom head at the end of the bottom-blowing nozzle tip, avoiding nozzle blockage caused by an oversized mushroom head and rapid erosion of the nozzle caused by an undersized mushroom head.

公开(公告)号：US11732337B2

公开(公告)日：2023-08-22

申请号：US17325619

申请日：2021-05-20

申请人： NORTHEASTERN UNIVERSITY

发明人： Huabing Li ,  Zhouhua Jiang ,  Hao Feng ,  Lingfeng Xia ,  Hongchun Zhu ,  Shucai Zhang ,  Weichao Jiao

IPC分类号： C22C38/00 ,  C21D6/00 ,  C22B9/18 ,  C21C7/00

CPC分类号： C22C38/001 ,  C21C7/0075 ,  C21D6/002 ,  C21D6/005 ,  C22B9/18 ,  C21D2211/001

摘要： The present disclosure provides a method for producing a high nitrogen steel by a duplex melting process of a pressurized ladle refining and a pressurized electroslag remelting, which relates to the technical field of high nitrogen steel melting. In the present disclosure, the molten steel is subjected in sequence to a nitrogen alloying, a deep deoxidation and a deep desulfurization by adding a nickel-magnesium alloy and rare earth in the pressurized ladle furnace, and a combination of a blowing nitrogen from the bottom of the pressurized ladle and a pressurized nitriding at the interface of gas and the molten steel is used to achieve a high-efficiency nitrogen alloying, a uniform nitrogen distribution, and a decreased impurity content in the ingot; then the ingot is subjected to a pressurized electroslag remelting to obtain a high nitrogen steel.

公开(公告)号：US20230235470A1

公开(公告)日：2023-07-27

申请号：US17918938

申请日：2020-04-16

申请人： THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO ,  TENOVA GOODFELLOW INC.

发明人： GISELE AZIMI ,  WILLIAM D. JUDGE ,  SCIPOLO VITTORIO

IPC分类号： C25C3/34 ,  C25C7/02 ,  C25C7/00 ,  C21C1/00 ,  C25C7/06

CPC分类号： C25C3/34 ,  C25C7/025 ,  C25C7/005 ,  C21C1/00 ,  C25C7/06

摘要： Electrorefining cells and methods for electrorefining ferrous molten metal (e.g. steels), that includes impurities (e.g., carbon), are described. Liquid metal is provided in ladle with a molten electrolyte on top of it to form a metal-electrolyte interface. An electrode connection is put into contact with the metal for electronic conduction therewith, while a counter electrode is put into contact with the electrolyte for forming an electrolyte-counter electrode interface. Both the electrode connection and the counter electrode remain in the solid form in, and inert to, the metal and the electrolyte, respectively. The electrode connection and the counter electrode are made of an electronically conductive material. Therefore, during electrorefining operations, an electromotive force can be supplied between the electrode connection and the counter electrode so as to induce electrochemical reactions to occur at both the metal-electrolyte interface and the electrolyte-counter electrode connection, producing a ferrous molten metal depleted of the impurities.

公开(公告)号：US20230220504A1

公开(公告)日：2023-07-13

申请号：US17928185

申请日：2021-06-07

申请人： LAIWU STEEL YINSHAN SECTION CO., LTD.

发明人： Heng MA ,  Kang HE ,  Zhongxue WANG ,  Tengfei WANG ,  Wenpeng ZOU ,  Chuanzhi DU ,  Aijiao CHEN ,  Pei ZHANG ,  Wei NING ,  Yuexiang WANG

IPC分类号： C21C7/06 ,  C21C7/00 ,  C21C7/10 ,  C21C5/34 ,  C21C5/36

CPC分类号： C21C7/06 ,  C21C7/0087 ,  C21C7/10 ,  C21C5/34 ,  C21C5/36 ,  C21C7/0006 ,  C21C2007/0093

摘要： An ultra-high phosphorus molten iron low-cost smelting method for polar steel includes successively deoxidizing and tapping alloying raw materials including molten iron; performing slag adjusting and refining on the molten steel obtained in the converter smelting step to obtain a refined molten steel; vacuum degassing the refined molten steel; and performing continuous casting on the molten steel obtained after the RH degassing step to obtain a cast billet.

公开(公告)号：US11679288B2

公开(公告)日：2023-06-20

申请号：US16775323

申请日：2020-01-29

申请人： BEDA Oxygentechnik Armaturen GmbH

发明人： Reinhardt Bayer

IPC分类号： A62C2/04 ,  C21C5/46 ,  F16K17/38 ,  F27D3/16

CPC分类号： A62C2/04 ,  C21C5/462 ,  F16K17/383 ,  F27D2003/169

摘要： When using oxygen gas pipes 3, situations can arise, in particular due to slag return and similar dangers, in which the operator must initiate safety measures. Slag return safety devices are known which, in such a case, ensure that the gas flow is stopped by melting a cap 35 of a heat sensor 5. The response of this outlet valve 6 of the slag return safety device can be recognized, for example, by the fact that the inlet pressure of the existing oxygen gas 4 is used to push pins 21 located in the wall 19 of the oxygen gas pipe 3 beyond the outside 27 of the oxygen gas pipe 3, so that they cannot be overlooked as a warning signal. The movement of the pins 21 can be used to activate further signal systems 30 in order to provide additional indications of this movement optically and/or acoustically.

公开(公告)号：US11678412B1

公开(公告)日：2023-06-13

申请号：US16808051

申请日：2020-03-03

申请人： AMI International, S. De R.L. De C.V

发明人： James Jesse Hansen, Jr. ,  Eric Garza Sanchez ,  Mariana Viale

IPC分类号： H05B7/101 ,  C21C5/52 ,  F27B3/08

CPC分类号： H05B7/101 ,  C21C5/52 ,  F27B3/085

摘要： A system and method for monitoring consumption of graphite electrodes during the operation of an electric arc furnace (EAF) uses machine vision cameras operatively communicating with a computer processor. The system can determine, track, manage, and optimize the consumption of the graphite electrodes in real time. Electrode consumption is determined for each EAF heat by measuring the length and tip diameter of the electrode. The length and tip diameter are used to determine the electrode consumption amount using a consumption model. Measured hydraulic pressure within the EAF correlating with a known electrode weight can also be used to determine electrode consumption and correlated with the model calculation. Butt loss can also be determined based on the machine vision measured lengths of the electrode and/or based on the hydraulic pressure. The calculated electrode consumption amounts are also stored in a database and correlated to other measured EAF parameters for multiple EAFs.

公开(公告)号：US11674101B2

公开(公告)日：2023-06-13

申请号：US17205605

申请日：2021-03-18

申请人： Carbon Technology Holdings, LLC

发明人： James A. Mennell ,  Daniel J. Despen

IPC分类号： C10L5/44 ,  C21B5/00 ,  C10B49/02 ,  C10B53/02 ,  C10B57/02 ,  C10L5/04 ,  C10B47/30 ,  C10L5/36 ,  C22B4/02 ,  H01B1/04 ,  C10B39/02 ,  C10B41/00 ,  C10B57/06 ,  C10B57/10 ,  C10B45/00 ,  B01J21/18 ,  C10B39/00 ,  C10B43/02 ,  C21C5/52 ,  C01B32/318 ,  C01B32/312 ,  C21B13/00

CPC分类号： C10L5/447 ,  B01J21/18 ,  C01B32/312 ,  C01B32/318 ,  C10B39/00 ,  C10B39/02 ,  C10B41/00 ,  C10B43/02 ,  C10B45/00 ,  C10B47/30 ,  C10B49/02 ,  C10B53/02 ,  C10B57/02 ,  C10B57/06 ,  C10B57/10 ,  C10L5/04 ,  C10L5/36 ,  C10L5/363 ,  C10L5/365 ,  C10L5/366 ,  C10L5/442 ,  C21B5/007 ,  C21C5/52 ,  C22B4/02 ,  H01B1/04 ,  C10L2200/0204 ,  C10L2200/025 ,  C10L2200/0469 ,  C10L2290/02 ,  C10L2290/06 ,  C10L2290/08 ,  C10L2290/145 ,  C10L2290/28 ,  C10L2290/30 ,  C10L2290/50 ,  C10L2290/52 ,  C10L2290/58 ,  C10L2290/60 ,  C21B13/0066 ,  Y02E50/10 ,  Y02E50/30 ,  Y02P10/143 ,  Y02P20/129 ,  Y02P20/145 ,  Y02W10/30 ,  Y02W10/37

摘要： This invention provides processes and systems for converting biomass into high carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives.

公开(公告)号：US20230175093A1

公开(公告)日：2023-06-08

申请号：US17920166

申请日：2021-04-29

申请人： BAOSHAN IRON & STEEL CO., LTD.

发明人： Yingtie XU ,  Zongze HUANG ,  Xiangjiang LIU ,  Genjie WAN ,  Yanfeng QI

IPC分类号： C21D9/52 ,  C22B9/18 ,  C21C5/52 ,  C22C33/04 ,  C22C33/00 ,  C21C7/06 ,  C21C7/10 ,  C21D8/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00 ,  C22C38/06 ,  C21C7/064

CPC分类号： C21D9/525 ,  C22B9/18 ,  C21C5/5241 ,  C22C33/04 ,  C22C33/006 ,  C21C7/06 ,  C21C7/10 ,  C21D8/065 ,  C22C38/02 ,  C22C38/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/06 ,  C21C7/064

摘要： A process for smelting steel for ultrafine carborundum sawing wires, comprising: 1) in a vacuum induction furnace, using pure iron and low-phosphorus pig iron as raw materials to be melted into molten steel under the protection of argon; vacuumizing and smelting, and degassing; using silicon iron as a deoxidizer to adjust components of the molten steel; and casting a circular ingot in vacuum; 2) cleaning the surface of the circular ingot to produce an electrode bar; 3) remelting and smelting the electrode bar as raw material to a cylindrical electroslag ingot in an electroslag furnace, wherein the electroslag protecting slag comprises: CaF2: 45-55%, Al2O3: 15-25%, SiO2: 20-25%, Na2O: 2-4%, and K2O: 1-2%; 4) forging the electroslag ingot to a square billet; and 5) rolling the forged billet to a steel wire rod, and the steel wire rod comprising [C]: 0.92-1.1%, [Si]: 0.3-0.4%, [Mn]: 0.5-0.8%, [Al]

公开(公告)号：US11662145B2

公开(公告)日：2023-05-30

申请号：US17278239

申请日：2019-10-24

申请人： SOUDOBEAM

发明人： Jean-Philippe Thomas

IPC分类号： F27D9/00 ,  F27B3/22 ,  F27D3/16 ,  C21C5/52

CPC分类号： F27D9/00 ,  C21C5/52 ,  F27B3/22 ,  F27B3/225 ,  F27D3/16 ,  F27D2003/164 ,  F27D2003/166 ,  F27D2003/167 ,  F27D2009/0013 ,  F27D2009/0067

摘要： A gas injection system includes a tubular wall 3 capable of being thermally stressed and having a proximal extremity and a distal extremity 11, at the distal extremity, at least one extremity opening through which at least one gas is projected. A cooling is system located in the tubular wall including axial channels 12 which extend axially towards the distal extremity and in which a cooling fluid is circulated. Connecting channels 13 circumferentially join the axial channels to each other at the distal extremity of the tubular wall. The connecting channels, which circumferentially join the axial channels at the distal extremity of the tubular wall, have a rounded shape in the direction of the distal extremity.