EP3712281B1 - Blast control device for blast furnace and method therefor - Google Patents

Blast control device for blast furnace and method therefor Download PDF

Info

Publication number
EP3712281B1
EP3712281B1 EP18879916.7A EP18879916A EP3712281B1 EP 3712281 B1 EP3712281 B1 EP 3712281B1 EP 18879916 A EP18879916 A EP 18879916A EP 3712281 B1 EP3712281 B1 EP 3712281B1
Authority
EP
European Patent Office
Prior art keywords
blast
blast furnace
particle size
data
volume
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18879916.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3712281A1 (en
EP3712281A4 (en
Inventor
Sang Han Son
Ji Hoon Na
Inhyeon JEONG
Ji-Sung Park
Gi Wan Son
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP3712281A1 publication Critical patent/EP3712281A1/en
Publication of EP3712281A4 publication Critical patent/EP3712281A4/en
Application granted granted Critical
Publication of EP3712281B1 publication Critical patent/EP3712281B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/24—Test rods or other checking devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D21/0014—Devices for monitoring temperature
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/006—Automatically controlling the process
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/26—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/28—Arrangements of monitoring devices, of indicators, of alarm devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2300/00—Process aspects
    • C21B2300/04—Modeling of the process, e.g. for control purposes; CII
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
    • F27D2019/004—Fuel quantity
    • F27D2019/0043—Amount of air or O2 to the burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
    • F27D2021/0007—Monitoring the pressure

Definitions

  • the present invention relates to a device for controlling a blast in a blast furnace and a method thereof.
  • pig iron is manufactured by reducing natural iron ore by use of a carbon monoxide produced in reaction of coke that is a fuel and oxygen.
  • a condition of a blast furnace From among various operational factors for indicating an inner furnace condition of a blast furnace in a blast furnace process (referred to as a condition of a blast furnace hereinafter), permeability that represents a gas flowing degree in the furnace is one of very important factors for determining efficiency and safety of a blast furnace operation.
  • the blast furnace operation is performed when a reduction gas rises in the furnace to contact the charged iron ore, and the iron ore having received heat according to a contact with the reduction gas is fused and reduced into pig iron.
  • thermal energy and the reduction gas needed in fusion and reduction of iron ore are supplied by a hot blast supplied through a lower portion of the furnace, and for the purpose of stabilizing the condition of the blast furnace, it is very important to appropriately control an amount of the hot blast input through the lower portion, that is, a blast volume.
  • the blast volume supplied into the furnace is controlled according to the permeability in the furnace.
  • the volume of pig iron produced in the blast furnace increases, but there may be a stabilization drawback when the blast volume increases while the permeability in the furnace is not good. Therefore, an operator decreases the blast volume so as to stabilize the operation when permeability in the furnace is bad, and increases the blast volume so as to increase operation efficiency when the permeability is good.
  • Particle sizes and particle size distribution of raw material (sintered ore, pellets, sized lumps, etc.) fuels (cokes) charged through an upper portion of the blast furnace determine porosity of a charging layer, which is a very important factor for determining permeability at the upper portion in the furnace.
  • the present invention has been made in an effort to provide a device for controlling a blast for confirming a particle size and a particle size distribution of a charging material charged into a furnace in real time and controlling a hot-blast volume supplied therein, and a method thereof.
  • An aspect of the present invention provides a device for controlling a blast in a blast furnace, as disclosed in appended claim 1.
  • the data collector may obtain the particle size and the particle size distribution of the charging material according to an image analysis of the image.
  • the device may further include at least one sensor for obtaining at least one piece of sensing data for indicating permeability of the blast furnace, wherein the blast volume predictor may obtain the blast volume predictive value by using the particle size data and the at least one piece of sensing data.
  • the blast volume predictive model may output the blast volume predictive value corresponding to the particle size data and the at least one piece of sensing data.
  • the blast volume controller may control the hot-blast volume by controlling an opened or closed degree of a blast valve between a hot stove and the blast furnace.
  • Another aspect of the present invention provides a method for controlling a blast in a blast furnace, as disclosed in appended claim 5.
  • the obtaining of particle size data may include obtaining a particle size and a particle size distribution of the charging material according to an image analysis on the image.
  • the method may further include obtaining at least one piece of sensing data for indicating permeability of the blast furnace through at least one sensor, wherein the obtaining of a blast volume predictive value may include obtaining the blast volume predictive value by using the particle size data and the at least one piece of sensing data.
  • the at least one piece of sensing data may include a pressure in the blast furnace, a temperature in the blast furnace, or a gas component discharged from the blast furnace.
  • the obtaining of a blast volume predictive value may include obtaining the blast volume predictive value by using the particle size data and the at least one piece of sensing data as input data of a blast volume predictive model for estimating a blast volume of the blast furnace.
  • the controlling of a hot-blast volume may include controlling the hot-blast volume by controlling an opened or closed degree of a blast valve between a hot stove and the blast furnace.
  • the change of the condition of the blast furnace may be minimized, the blast furnace operation may be stabilized, and efficiency may be increased by confirming the particle size and the particle size distribution of the charging material charged into the furnace and accordingly controlling the blast volume.
  • an element when it is described that an element is “coupled” to another element, the element may be “directly coupled” to the other element or “electrically coupled” to the other element through a third element.
  • FIG. 1 shows an example of blast furnace equipment.
  • the blast furnace equipment is for generating pig iron in a steel process.
  • the blast furnace 10 is a furnace into which an iron ore that is a raw material is charged and is fused and reduced to pig iron.
  • a burden hopper 11 for storing a raw material or fuel charged through a charging conveyor belt 5 is positioned at an upper portion of the blast furnace 10. The raw material or the fuel stored in the burden hopper 11 is charged into the blast furnace 10 according to a burden charging process.
  • a blast port 12 for inputting a hot blast supplied by a hot stove 20 into the blast furnace 10 is positioned on a lower portion of the blast furnace 10.
  • An inflow amount of the hot blast supplied by the hot stove 20 into the blast furnace 10 (referred to as a blast volume hereinafter) is controlled according to an opened or closed degree of the blast valve 21.
  • the fuel (e.g., cokes) input into the blast furnace 10 is combusted in reaction with oxygen to generate high-temperature gas (referred to as reduction gas hereinafter).
  • reduction gas rises in the furnace to contact the iron ore charged into the blast furnace 10.
  • the iron ore having received heat according to the contact with the high-temperature reduction gas in the furnace is fused and reduced into pig iron.
  • the pig iron fused and reduced in the blast furnace 10 is stored at a lower portion of the furnace, and it is then discharged to the outside of the furnace through a tap hole at regular intervals.
  • FIG. 2 shows a device for controlling blast in a blast furnace according to an exemplary embodiment of the present invention.
  • the device 100 for controlling a blast may include an imaging device 110, a sensor unit 120, a data collector 130, a permeability parameter storage unit 140, a learner 150, a blast volume predictive model database 160, a blast volume predictor 170, a blast volume controller 180, and a display 190.
  • the imaging device 110 is installed on a charging conveyor belt 5, and photographs the raw material (sintered ore, pellets, sized lumps, etc.) or the fuel (coke, etc.) charged into the blast furnace 10 by use of the charging conveyor belt 5.
  • the image photographed by the imaging device 110 is used to obtain particle size data (particle sizes and particle size distribution) of the charging material (fuel or raw material). Therefore, a high-quality camera may be used as the imaging device 110 so as to enable obtainment of the particle size and the particle size distribution of the charging material from the image on the charging material.
  • the sensor unit 120 includes at least one sensor for measuring factors (e.g., a pressure, a temperature, an exhaust gas component, etc.) for determining permeability inside the blast furnace 10.
  • factors e.g., a pressure, a temperature, an exhaust gas component, etc.
  • the sensor unit 120 may include a temperature sensor 121 for measuring a temperature inside the blast furnace 10.
  • the temperature sensor 121 may be attached to the inside of the blast furnace 10, and it may also be positioned outside the blast furnace 10 to measure the temperature when the pig iron discharged from the blast furnace 10 is tapped. In the latter case, the temperature inside the blast furnace 10 may be estimated from the temperature of the pig iron.
  • the sensor unit 120 may include a pressure sensor 122 for measuring the pressure inside the blast furnace 10.
  • the sensor unit 120 may also include a gas sensor 123 for detecting a component of an exhaust gas (blast furnace gas) discharged by the blast furnace 10.
  • a gas sensor 123 for detecting a component of an exhaust gas (blast furnace gas) discharged by the blast furnace 10.
  • the data collector 130 may obtain particle size data (particle sizes and particle size distribution) on the charging material charged to the blast furnace 10 through the charging conveyor belt 5 according to real-time image analysis of the image of the charging material obtained by the imaging device 110. Further, the data collector 130 may obtain sensing data (a temperature, a pressure, an exhaust gas component, etc.) measured by the sensor unit 120 as a permeability parameter.
  • the permeability parameters (particle size data and sensing data) obtained in this way may be stored in the permeability parameter storage unit 140 as time-series data. They may also be displayed on a blast furnace operating screen through the display 190 so that an operator may confirm a situation in the blast furnace 10 in real time.
  • the learner 150 may learn the permeability parameter (particle size data, sensing data) collected by the data collector 130 as learning data for a predetermined time, and may generate a neural-network-algorithm-based blast volume predictive model.
  • the learner 150 may make a neural network learn by using collected permeability parameters and blast volume control values proposed by an expert as neural network algorithm learning data, and may produce a blast volume predictive model for predicting the blast volume based on present permeability parameters from learning results.
  • the neural network algorithm used in the learning may be configured with a neural network with a plurality of layers.
  • the blast volume predictive model produced by the learner 150 is stored in the blast volume predictive model database 160 and is used for the blast volume predictor 170 to predict the blast volume.
  • the blast volume predictor 170 may estimate the blast volume of a charging layer inside the blast furnace 10 from the permeability parameters that are time-series data by using a neural-network-algorithm-based blast volume predictive model.
  • the blast volume predictor 170 may input the permeability parameters collected by the data collector 130 as time-series input data of the blast volume predictive model, and may obtain an output value of the blast volume predictive model as a corresponding blast volume predictive value.
  • the blast volume controller 180 may determine an amount of the hot blast, that is, the blast volume, supplied into the blast furnace 10 based on the blast volume predictive value output by the blast volume predictor 170, and may control an opened or closed degree of the blast valve 21, thereby controlling the blast volume input into the blast furnace 10.
  • functions of the data collector 130, the learner 150, the blast volume predictor 170, and the blast volume controller 180 may be performed by a processor realized with at least one central processing unit (CPU), other chipsets, or a microprocessor.
  • CPU central processing unit
  • other chipsets or a microprocessor.
  • FIG. 3 shows a method for controlling a blast in a blast furnace according to an exemplary embodiment of the present invention.
  • the device 100 for controlling a blast photographs the charging conveyor belt 5 by using the imaging device 110 to thus capture an image of the charging material (a raw material or fuel) moved to the blast furnace 10 (S100). Particle size data on the charging material are obtained by image analysis of the obtained charging material image (S110).
  • the device 100 for controlling a blast obtains sensing data indicating permeability inside the blast furnace 10 through at least one of sensors 121, 122, and 123 (S120).
  • the particle size data and the sensing data obtained through the step S110 and the step S120 are stored in the permeability parameter storage unit 140 as permeability parameters.
  • the device 100 for controlling a blast continuously obtains the permeability parameters through the step S110 and the step S120, and uses the same as time-series input data of the neural network algorithm based blast volume predictive model to obtain the predictive value of the blast volume in the blast furnace 10 (S130).
  • the device 100 for controlling a blast controls the blast volume supplied into the blast furnace 10 by controlling the opened or closed degree of the blast valve 21 based on the obtained blast volume predictive value (S140).
  • the device 100 for controlling a blast supports confirmation of the particle size and the particle size distribution of the charging material charged into the blast furnace 10 in real time.
  • the device 100 for controlling a blast supports automatic control of the blast volume according to the condition of the blast furnace by providing a predictive model for predicting the blast volume according to the present condition of the blast furnace through learning. Therefore, the device 100 for controlling a blast may control the blast volume in real-time reaction to the condition of the blast furnace, thereby minimizing changes of the condition of the blast furnace and resultantly stabilizing an operation of the blast furnace and increasing efficiency.
  • the method for controlling a blast according to an exemplary embodiment of the present invention may be performed by using software.
  • configurational tools for the present invention are code segments for performing necessary tasks.
  • the program or the code segments may be stored in a computer-readable recording medium.
  • Computer-readable recording media include all types of recording apparatuses in which data readable by a computer system are stored. Examples of the computer-readable recording devices include a ROM, a RAM, a CD-ROM, a DVD_ROM, a DVD_RAM, a magnetic tape, a floppy disk, a hard disk drive, and an optical data storage device. Further, the computer-readable recording media may be distributed to a computer device connected by a network, and computer-readable codes may be stored and performed in a distributed fashion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Iron (AREA)
  • Blast Furnaces (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
EP18879916.7A 2017-11-14 2018-07-04 Blast control device for blast furnace and method therefor Active EP3712281B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170151770A KR102002428B1 (ko) 2017-11-14 2017-11-14 고로의 송풍 제어 장치 및 그 방법
PCT/KR2018/007588 WO2019098484A1 (ko) 2017-11-14 2018-07-04 고로의 송풍 제어 장치 및 그 방법

Publications (3)

Publication Number Publication Date
EP3712281A1 EP3712281A1 (en) 2020-09-23
EP3712281A4 EP3712281A4 (en) 2020-09-23
EP3712281B1 true EP3712281B1 (en) 2023-02-15

Family

ID=66538640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18879916.7A Active EP3712281B1 (en) 2017-11-14 2018-07-04 Blast control device for blast furnace and method therefor

Country Status (5)

Country Link
EP (1) EP3712281B1 (ko)
JP (1) JP7012159B2 (ko)
KR (1) KR102002428B1 (ko)
CN (1) CN111344420A (ko)
WO (1) WO2019098484A1 (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100508379B1 (ko) * 2002-12-10 2005-08-17 엔프라니 주식회사 주목(朱木) 과육(果肉)으로부터 유래된 폴리사카라이드의제조방법 및 이들을 함유하는 화장료 조성물
US20220380859A1 (en) * 2019-10-31 2022-12-01 Jfe Steel Corporation Method for operating blast furnace
JP7380604B2 (ja) * 2021-01-12 2023-11-15 Ｊｆｅスチール株式会社 学習モデル生成方法、学習モデル生成装置、高炉の制御ガイダンス方法、及び溶銑の製造方法
CN113793308A (zh) * 2021-08-25 2021-12-14 北京科技大学 一种基于神经网络的球团矿质量智能评级方法及装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02170906A (ja) * 1988-12-22 1990-07-02 Kawasaki Steel Corp 高炉送風流量制御方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039724B2 (ja) * 1977-11-08 1985-09-07 日本鋼管株式会社 高炉炉況判定方法およびその装置
JPS5855512A (ja) * 1981-09-29 1983-04-01 Kawasaki Steel Corp 高炉の炉況判定方法
JPS61147804A (ja) * 1984-12-18 1986-07-05 Sumitomo Metal Ind Ltd 高炉操業方法
JPS6283410A (ja) * 1985-10-08 1987-04-16 Sumitomo Metal Ind Ltd 高炉操業方法
JPH0730368B2 (ja) * 1988-02-12 1995-04-05 日本鋼管株式会社 高炉炉熱制御装置
JPH03236409A (ja) * 1990-02-13 1991-10-22 Nkk Corp 高炉装入原料の粒度制御方法
JPH0598322A (ja) * 1991-10-02 1993-04-20 Nkk Corp 高炉装入物の粒度制御方法
JP4901462B2 (ja) 2006-12-27 2012-03-21 新日本製鐵株式会社 炉頂部のガス流状態監視方法、監視装置、及びコンピュータプログラム
KR101605206B1 (ko) * 2009-12-21 2016-03-21 주식회사 포스코 고로내 송풍용 열풍온도 제어장치
KR101277973B1 (ko) * 2011-07-28 2013-06-27 현대제철 주식회사 고로의 송풍 에너지 제어 방법
GB2509121B (en) * 2012-12-21 2015-03-18 Siemens Plc Apparatus for supplying blast to a blast furnace
KR101466499B1 (ko) * 2013-07-26 2014-11-28 현대제철 주식회사 연화 융착대 가시화 방법
JP6044536B2 (ja) * 2013-12-27 2016-12-14 Ｊｆｅスチール株式会社 高炉装入物検出装置
CN105177199B (zh) * 2015-08-31 2017-04-19 南京南瑞继保电气有限公司 高炉煤气发生量软测量方法
CN106521066A (zh) * 2016-12-23 2017-03-22 天津市三特电子有限公司 高炉炉料粒度监控系统及分布数据在线分析方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02170906A (ja) * 1988-12-22 1990-07-02 Kawasaki Steel Corp 高炉送風流量制御方法

Also Published As

Publication number Publication date
JP7012159B2 (ja) 2022-01-27
KR102002428B1 (ko) 2019-07-22
EP3712281A1 (en) 2020-09-23
CN111344420A (zh) 2020-06-26
EP3712281A4 (en) 2020-09-23
WO2019098484A1 (ko) 2019-05-23
JP2021503042A (ja) 2021-02-04
KR20190054794A (ko) 2019-05-22

Similar Documents

Publication Publication Date Title
EP3712281B1 (en) Blast control device for blast furnace and method therefor
US11441206B2 (en) System and method of operating a batch melting furnace
JP2021507115A (ja) 炉況管理装置及び方法
KR102121910B1 (ko) 고로의 송풍 제어 장치 및 그 방법
EP3169961B1 (en) Furnace cooling panel monitoring system
CN1635050A (zh) 焦炉炼焦生产自动加热方法
KR20140016643A (ko) 고로 장입물 분포 평가방법
CN106868249B (zh) 基于温度预警机制的冶金炉炉衬安全的判定系统及方法
KR101246513B1 (ko) 고로의 노열 변동 예측방법
KR20190065800A (ko) 미분탄 취입량 제어 장치 및 그 방법
TWI435936B (zh) 高爐管道流現象之預測方法
JP2001254111A (ja) 高炉の炉熱制御方法及びガイダンス装置
US11678412B1 (en) Method for determining electrode consumption with machine vision
WO2017048533A1 (en) Systems and method of monitoring processing systems
JP6944393B2 (ja) プラント状態評価システム、プラント状態評価方法、及びプログラム
JP2018003044A (ja) 操業異常推定方法および操業異常推定装置
JP4311669B2 (ja) 高炉温度制御システム及び高炉温度制御方法
JP6815954B2 (ja) プラントの操業状態推定装置及び操業状態推定方法
CN118375938B (zh) 一种锅灶余热回收控制方法及系统
WO2024130882A1 (zh) 动力电池材料烧制系统加热组件老化预测方法及系统
Matthes et al. Camera based Identification and Control of the Waelz Process.
JPH04350108A (ja) 高炉の制御方法
JP4887742B2 (ja) 脱ガス処理中の溶鋼温度制御方法および溶鋼温度制御装置
JP2021130860A (ja) 炉熱予測装置および該方法ならびに炉熱制御案内装置および該方法
KR20190071370A (ko) 고로의 노열 제어 장치 및 그 방법

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200605

A4 Supplementary search report drawn up and despatched

Effective date: 20200722

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210319

RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 19/00 20060101ALN20210826BHEP

Ipc: C21B 5/00 20060101ALI20210826BHEP

Ipc: F27D 21/00 20060101ALI20210826BHEP

Ipc: F27B 1/28 20060101ALI20210826BHEP

Ipc: F27B 1/26 20060101ALI20210826BHEP

Ipc: C21B 7/24 20060101ALI20210826BHEP

Ipc: C21B 7/16 20060101AFI20210826BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 19/00 20060101ALN20210831BHEP

Ipc: C21B 5/00 20060101ALI20210831BHEP

Ipc: F27D 21/00 20060101ALI20210831BHEP

Ipc: F27B 1/28 20060101ALI20210831BHEP

Ipc: F27B 1/26 20060101ALI20210831BHEP

Ipc: C21B 7/24 20060101ALI20210831BHEP

Ipc: C21B 7/16 20060101AFI20210831BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 19/00 20060101ALN20210920BHEP

Ipc: C21B 5/00 20060101ALI20210920BHEP

Ipc: F27D 21/00 20060101ALI20210920BHEP

Ipc: F27B 1/28 20060101ALI20210920BHEP

Ipc: F27B 1/26 20060101ALI20210920BHEP

Ipc: C21B 7/24 20060101ALI20210920BHEP

Ipc: C21B 7/16 20060101AFI20210920BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 19/00 20060101ALN20210929BHEP

Ipc: C21B 5/00 20060101ALI20210929BHEP

Ipc: F27D 21/00 20060101ALI20210929BHEP

Ipc: F27B 1/28 20060101ALI20210929BHEP

Ipc: F27B 1/26 20060101ALI20210929BHEP

Ipc: C21B 7/24 20060101ALI20210929BHEP

Ipc: C21B 7/16 20060101AFI20210929BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 19/00 20060101ALN20211001BHEP

Ipc: C21B 5/00 20060101ALI20211001BHEP

Ipc: F27D 21/00 20060101ALI20211001BHEP

Ipc: F27B 1/28 20060101ALI20211001BHEP

Ipc: F27B 1/26 20060101ALI20211001BHEP

Ipc: C21B 7/24 20060101ALI20211001BHEP

Ipc: C21B 7/16 20060101AFI20211001BHEP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602018046263

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: C21B0005000000

Ipc: C21B0007160000

RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 19/00 20060101ALN20220701BHEP

Ipc: C21B 5/00 20060101ALI20220701BHEP

Ipc: F27D 21/00 20060101ALI20220701BHEP

Ipc: F27B 1/28 20060101ALI20220701BHEP

Ipc: F27B 1/26 20060101ALI20220701BHEP

Ipc: C21B 7/24 20060101ALI20220701BHEP

Ipc: C21B 7/16 20060101AFI20220701BHEP

RIC1 Information provided on ipc code assigned before grant

Ipc: F27D 19/00 20060101ALN20220727BHEP

Ipc: C21B 5/00 20060101ALI20220727BHEP

Ipc: F27D 21/00 20060101ALI20220727BHEP

Ipc: F27B 1/28 20060101ALI20220727BHEP

Ipc: F27B 1/26 20060101ALI20220727BHEP

Ipc: C21B 7/24 20060101ALI20220727BHEP

Ipc: C21B 7/16 20060101AFI20220727BHEP

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220915

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO HOLDINGS INC.

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO CO., LTD

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018046263

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1548244

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230315

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230615

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230515

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230615

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230516

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20230502

Year of fee payment: 6

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018046263

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1548244

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230215

26N No opposition filed

Effective date: 20231116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230704

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20230704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230704

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230731

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230215

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230731

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230704

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240620

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230704

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240620

Year of fee payment: 7