EP4317465A4 - Betriebsverfahren für einen reduktionsofen - Google Patents

Betriebsverfahren für einen reduktionsofen

Info

Publication number
EP4317465A4
EP4317465A4 EP21935168.1A EP21935168A EP4317465A4 EP 4317465 A4 EP4317465 A4 EP 4317465A4 EP 21935168 A EP21935168 A EP 21935168A EP 4317465 A4 EP4317465 A4 EP 4317465A4
Authority
EP
European Patent Office
Prior art keywords
operating
reduction furnace
furnace
reduction
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.)
Pending
Application number
EP21935168.1A
Other languages
English (en)
French (fr)
Other versions
EP4317465A1 (de
Inventor
Tetsuya Yamamoto
Takahide Higuchi
Koki Terui
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.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
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 JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP4317465A1 publication Critical patent/EP4317465A1/de
Publication of EP4317465A4 publication Critical patent/EP4317465A4/de
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0086—Conditioning, transformation of reduced iron ores
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C21B13/146—Multi-step reduction without melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)
  • Gasification And Melting Of Waste (AREA)
EP21935168.1A 2021-03-31 2021-12-03 Betriebsverfahren für einen reduktionsofen Pending EP4317465A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021062160A JP7040659B1 (ja) 2021-03-31 2021-03-31 還元炉の操業方法
PCT/JP2021/044585 WO2022209015A1 (ja) 2021-03-31 2021-12-03 還元炉の操業方法

Publications (2)

Publication Number Publication Date
EP4317465A1 EP4317465A1 (de) 2024-02-07
EP4317465A4 true EP4317465A4 (de) 2025-05-28

Family

ID=81214340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21935168.1A Pending EP4317465A4 (de) 2021-03-31 2021-12-03 Betriebsverfahren für einen reduktionsofen

Country Status (6)

Country Link
EP (1) EP4317465A4 (de)
JP (1) JP7040659B1 (de)
KR (1) KR102960098B1 (de)
CN (1) CN117083395A (de)
TW (1) TWI802162B (de)
WO (1) WO2022209015A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12108473B2 (en) * 2021-01-14 2024-10-01 Qualcomm Incorporated Modes of simultaneous connectivity in integrated access and backhaul
AU2022370370B2 (en) * 2021-10-18 2026-01-08 Calix Ltd Processes and methods for the production of iron and steel
AU2024356468A1 (en) 2023-10-04 2026-03-26 Nippon Steel Corporation Method for reducing iron ore fine
CN117487990A (zh) * 2023-11-03 2024-02-02 攀钢集团攀枝花钢铁研究院有限公司 一种颗粒粒径抑制铁氧化物粘结的方法
WO2025154403A1 (ja) * 2024-01-17 2025-07-24 日本製鉄株式会社 還元鉄の製造方法
JPWO2025158890A1 (de) * 2024-01-24 2025-07-31
JPWO2025158975A1 (de) * 2024-01-24 2025-07-31

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617256A (en) * 1968-02-28 1971-11-02 Fmc Corp Process for simultaneously producing powdered iron and active carbon
US20130032005A1 (en) * 2010-04-19 2013-02-07 Christian Boehm Bentonite-bound compacts of undersized oxidic iron carriers

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2562172B2 (ja) * 1988-03-25 1996-12-11 新日本製鐵株式会社 鉄鉱石流動層還元装置
DE4240197C2 (de) 1992-11-30 1996-04-18 Vuletic Bogdan Dipl Ing Verfahren zur Herstellung von Roheisen aus Eisenerzen und Vorrichtung zur thermischen und/oder chemischen Behandlung eines leicht zerfallenden Materials oder zur Herstellung von Roheisen mittels dieses Verfahrens
BR9811068A (pt) * 1997-08-04 2000-08-15 Bechtel Group Inc Método para obter um concentrado de ferro a partir de uma carga de menério de ferro
US6224649B1 (en) * 1998-07-06 2001-05-01 Hylsa, S.A. De C.V. Method and apparatus for reducing iron-oxides-particles having a broad range of sizes
EP1253207A4 (de) * 1999-09-06 2003-05-28 Nippon Kokan Kk Verfahren und vorrichtung zum metallschmelzen
JP5549227B2 (ja) * 2010-01-07 2014-07-16 新日鐵住金株式会社 予備還元焼結鉱の製造方法およびこれを利用した高炉操業方法
JP5594013B2 (ja) * 2010-09-21 2014-09-24 Ｊｆｅスチール株式会社 還元鉄製造方法
JP5630222B2 (ja) 2010-11-10 2014-11-26 新日鐵住金株式会社 予熱原料を使用した直接還元炉の操業方法
JP2014037575A (ja) * 2012-08-15 2014-02-27 Nippon Steel & Sumitomo Metal 還元鉄の製造方法
CN107299175A (zh) * 2017-07-24 2017-10-27 江苏省冶金设计院有限公司 一种流化床制气、气基还原和电炉炼钢耦合的系统和方法
CN111979371B (zh) * 2020-07-31 2022-05-24 太原理工大成工程有限公司 一种干熄焦耦合竖炉生产直接还原铁的工艺中热量分布式利用的方法
CN113699370A (zh) * 2021-07-21 2021-11-26 酒泉钢铁(集团)有限责任公司 一种铁精矿回转窑煤基氢冶金-热造块-电炉生产半钢工艺

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617256A (en) * 1968-02-28 1971-11-02 Fmc Corp Process for simultaneously producing powdered iron and active carbon
US20130032005A1 (en) * 2010-04-19 2013-02-07 Christian Boehm Bentonite-bound compacts of undersized oxidic iron carriers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022209015A1 *

Also Published As

Publication number Publication date
TWI802162B (zh) 2023-05-11
CN117083395A (zh) 2023-11-17
KR102960098B1 (ko) 2026-04-30
JP2022157749A (ja) 2022-10-14
TW202239974A (zh) 2022-10-16
KR20230159536A (ko) 2023-11-21
JP7040659B1 (ja) 2022-03-23
EP4317465A1 (de) 2024-02-07
WO2022209015A1 (ja) 2022-10-06
BR112023019680A2 (pt) 2023-10-31

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A4 Supplementary search report drawn up and despatched

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RIC1 Information provided on ipc code assigned before grant

Ipc: C22B 5/12 20060101ALI20250422BHEP

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