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    DECARBURIZATION REFINING METHOD FOR MOLTEN STEEL UNDER REDUCED PRESSURE
    2.
    发明公开
    DECARBURIZATION REFINING METHOD FOR MOLTEN STEEL UNDER REDUCED PRESSURE 审中-公开

    公开(公告)号：US20230142051A1

    公开(公告)日：2023-05-11

    申请号：US17914528

    申请日：2021-03-24

    申请人： JFE STEEL CORPORATION

    发明人： Keisuke MIZOBATA ,  Akifumi HARADA ,  Yoshie NAKAI ,  Rei YAMADA

    IPC分类号： C21C7/068 ,  C21C7/10 ,  C21C7/00

    CPC分类号： C21C7/068 ,  C21C7/10 ,  C21C7/0068 ,  C21C2300/06 ,  C21C7/0075

    摘要： A decarburization refining method for molten steel under reduced pressure. The method includes an oxygen-blowing decarburization and a rimmed decarburization. Using operation data taken at a time when oxygen-blowing decarburization is started and a time when oxygen-blowing decarburization is ended, an amount of carbon removed while the oxygen-blowing decarburization is performed is estimated. Based on the estimated amount of carbon removed, a carbon concentration in molten steel at a time when the rimmed decarburization is started is estimated. Using the estimated value as the carbon concentration in molten steel at the time when the rimmed decarburization is started, a change over time in the carbon concentration in molten steel while the rimmed decarburization is performed is calculated. Based on the calculated change over time in the carbon concentration in molten steel while the rimmed decarburization is performed, a determination is made about a time when the rimmed decarburization is ended.

    METHOD FOR OPERATING AN ARC FURNACE, CONTROL AND/OR REGULATING DEVICE FOR AN ARC FURNACE, AND ARC FURNACE
    4.
    发明申请
    METHOD FOR OPERATING AN ARC FURNACE, CONTROL AND/OR REGULATING DEVICE FOR AN ARC FURNACE, AND ARC FURNACE 审中-公开
    用于操作电弧炉，控制和/或调节电弧炉的设备的方法和电弧炉

    公开(公告)号：US20120320942A1

    公开(公告)日：2012-12-20

    申请号：US13580885

    申请日：2011-02-01

    申请人： Björn Dittmer ,  Arno Döbbeler ,  Klaus Krüger ,  Sascha Leadbetter ,  Thomas Matschullat ,  Detlef Rieger

    发明人： Björn Dittmer ,  Arno Döbbeler ,  Klaus Krüger ,  Sascha Leadbetter ,  Thomas Matschullat ,  Detlef Rieger

    IPC分类号： H05B7/148

    CPC分类号： H05B7/148 ,  C21C5/5211 ,  C21C2300/06 ,  F27B3/28 ,  F27D19/00 ,  F27D21/00 ,  Y02P10/216 ,  Y02P10/256 ,  Y02P10/259 ,  Y02P10/286

    摘要： An arc furnace, a control and/or regulating device for an arc furnace, and a method for operating an arc furnace are provided, wherein an arc for melting metal is generated by at least one electrode, wherein an arc associated with the electrode(s) has a first radiation power based on preselected operating parameters, wherein the arc furnace is operated according to a predefined operating program based on an expected process sequence, wherein monitoring is performed to detect whether an undesirable deviation exists between the actual process sequence and the expected process sequence. Because a modified second radiation power is specified if a deviation is present, and a modified second set of operating parameters, e.g., impedance value(s), is determined based on the modified second radiation power, a method is provided that permits a minimal melting time while minimizing consumption of operating resources, e.g., with respect to arc furnace cooling.

    摘要翻译： 提供一种用于电弧炉的电弧炉，控制和/或调节装置以及用于操作电弧炉的方法，其中用于熔化金属的电弧由至少一个电极产生，其中与电极（s ）具有基于预选操作参数的第一辐射功率，其中根据预期的操作程序根据预定的操作程序操作电弧炉，其中执行监视以检测在实际过程序列与预期的操作参数之间是否存在不期望的偏差 过程序列。 因为如果存在偏差，则指定了修改的第二辐射功率，并且基于修改的第二辐射功率确定修改的第二组操作参数（例如阻抗值），所以提供允许最小熔化的方法 同时最小化操作资源的消耗，例如关于电弧炉冷却。

    System for furnace slopping prediction and lance optimization
    5.
    发明授权
    System for furnace slopping prediction and lance optimization 有权
    炉渣预测和喷枪优化系统

    公开(公告)号：US08097063B2

    公开(公告)日：2012-01-17

    申请号：US12714326

    申请日：2010-02-26

    申请人： Frank L. Kemeny ,  David I. Walker

    发明人： Frank L. Kemeny ,  David I. Walker

    IPC分类号： C21C5/32

    CPC分类号： C21C5/4673 ,  C21C5/462 ,  C21C2300/06 ,  F27B3/28 ,  F27D19/00 ,  F27D2019/0068 ,  F27D2019/0096 ,  Y02P10/286

    摘要： A method of making steel in a vessel comprising providing a lance for blowing oxygen on the surface of the steel in the vessel, the lance joined to a lance carriage and in communication with an accelerometer, the accelerometer in signal communication with a data acquisition module and a computer; charging the vessel with materials for steel making; lowering the lance into the vessel and injecting oxygen into the materials; acquiring a signal from the accelerometer indicative of lance vibration; processing the vibration signal to determine component frequencies of lance vibration; comparing the levels of the component frequencies to desired operating values; and adjusting at least one steel making process parameter based on the level of at least one of the component frequencies. The steel making process parameter to be adjusted may be oxygen flow rate through the lance.

    摘要翻译： 一种在容器中制造钢的方法，包括在容器中的钢表面上提供用于吹氧的喷枪，所述喷枪连接到喷枪托架并与加速度计通信，加速度计与数据采集模块进行信号通信， 一台电脑; 用造钢材料给船舶充电; 将喷枪降低到容器中并将氧气注入材料中; 从加速度计获取指示喷枪振动的信号; 处理振动信号以确定喷枪振动的分量频率; 将组件频率的水平与期望的操作值进行比较; 以及基于所述分量频率中的至少一个的水平来调整至少一个炼钢工艺参数。 要调整的炼钢工艺参数可以是穿过喷枪的氧气流量。

    SYSTEM FOR FURNACE SLOPPING PREDICTION AND LANCE OPTIMIZATION
    6.
    发明申请
    SYSTEM FOR FURNACE SLOPPING PREDICTION AND LANCE OPTIMIZATION 有权
    炉膛预测和优化系统

    公开(公告)号：US20110209579A1

    公开(公告)日：2011-09-01

    申请号：US12714326

    申请日：2010-02-26

    申请人： Frank L. KEMENY ,  David I. WALKER

    发明人： Frank L. KEMENY ,  David I. WALKER

    IPC分类号： C21C5/32

    CPC分类号： C21C5/4673 ,  C21C5/462 ,  C21C2300/06 ,  F27B3/28 ,  F27D19/00 ,  F27D2019/0068 ,  F27D2019/0096 ,  Y02P10/286

    摘要： A method of making steel in a vessel comprising providing a lance for blowing oxygen on the surface of the steel in the vessel, the lance joined to a lance carriage and in communication with an accelerometer, the accelerometer in signal communication with a data acquisition module and a computer; charging the vessel with materials for steel making; lowering the lance into the vessel and injecting oxygen into the materials; acquiring a signal from the accelerometer indicative of lance vibration; processing the vibration signal to determine component frequencies of lance vibration; comparing the levels of the component frequencies to desired operating values; and adjusting at least one steel making process parameter based on the level of at least one of the component frequencies. The steel making process parameter to be adjusted may be oxygen flow rate through the lance.

    摘要翻译： 一种在容器中制造钢的方法，包括在容器中的钢表面上提供用于吹氧的喷枪，所述喷枪连接到喷枪托架并与加速度计通信，加速度计与数据采集模块进行信号通信， 一台电脑; 用造钢材料给船舶充电; 将喷枪降低到容器中并将氧气注入材料中; 从加速度计获取指示喷枪振动的信号; 处理振动信号以确定喷枪振动的分量频率; 将组件频率的水平与期望的操作值进行比较; 以及基于所述分量频率中的至少一个的水平来调整至少一个炼钢工艺参数。 要调整的炼钢工艺参数可以是穿过喷枪的氧气流量。

    Non-contact exhaust gas measurement by means of FTIR spectrometry in metallurgical installations
    7.
    发明授权
    Non-contact exhaust gas measurement by means of FTIR spectrometry in metallurgical installations 失效
    通过FTIR光谱法在冶金设备中进行非接触排气测量

    公开(公告)号：US07388203B2

    公开(公告)日：2008-06-17

    申请号：US11659933

    申请日：2005-06-24

    申请人： Otmar Jannasch

    发明人： Otmar Jannasch

    IPC分类号： G01J5/02

    CPC分类号： F27D19/00 ,  C21C5/38 ,  C21C5/4673 ,  C21C2300/06 ,  F27D21/00 ,  F27D2019/0015 ,  G01N21/274 ,  G01N21/3504 ,  G01N21/85 ,  G01N2021/3595 ,  Y02P10/286

    摘要： During carrying out metallurgical processes in plant components such as, e.g., a converter, knowledge of a time-dependent exhaust gas composition provides a significant aid in obtaining information about the process advancement. Known analytical methods consist in taking of a limited volume from the exhaust gas flow (7) and then analyzing this exhaust gas sample. The drawback of an analytical method, which is based on sampling, consists in the time delay with which the results of the analysis can be first obtained after sampling. The invention proposes to carry out a non-contact exhaust gas analysis without a time delay using FTIR-spectrometry, whereby obtained spectra of a FTIR-spectrometer (2) are used for calculating the exhaust gas composition, using a preliminary established mathematical model (Drawing figure).

    摘要翻译： 在诸如转炉的工厂部件中进行冶金加工过程中，依赖于时间的废气组成的知识在获得有关工艺进步的信息方面提供了重要的帮助。 已知的分析方法包括从废气流（7）中获取有限的体积，然后分析该废气样品。 基于抽样的分析方法的缺点在于采样后可以首先获得分析结果的时间延迟。 本发明提出使用FTIR光谱法进行不间断的非接触排气分析，由此使用FTIR光谱仪（2）的所得光谱计算排气组成，使用初步建立的数学模型（图 数字）。