EP4549601A4 - Granulés non cuits pour réduction et leur procédé de fabrication - Google Patents

Granulés non cuits pour réduction et leur procédé de fabrication

Info

Publication number
EP4549601A4
EP4549601A4 EP22953913.5A EP22953913A EP4549601A4 EP 4549601 A4 EP4549601 A4 EP 4549601A4 EP 22953913 A EP22953913 A EP 22953913A EP 4549601 A4 EP4549601 A4 EP 4549601A4
Authority
EP
European Patent Office
Prior art keywords
manufacture
reduction
unburned pellets
unburned
pellets
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
EP22953913.5A
Other languages
German (de)
English (en)
Other versions
EP4549601A1 (fr
Inventor
Kenta Takehara
Tetsuya Yamamoto
Takahide Higuchi
Yuji Iwami
Shohei Fujiwara
Yuya Morita
Kenya HORITA
Toshiyuki Hirosawa
Daisuke Igawa
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 EP4549601A1 publication Critical patent/EP4549601A1/fr
Publication of EP4549601A4 publication Critical patent/EP4549601A4/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
    • 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
    • C21B13/0046—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
    • C21B13/008—Use of special additives or fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
    • C21B13/105—Rotary hearth-type furnaces
    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (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)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP22953913.5A 2022-08-01 2022-08-01 Granulés non cuits pour réduction et leur procédé de fabrication Pending EP4549601A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/029423 WO2024028922A1 (fr) 2022-08-01 2022-08-01 Granulés non cuits pour réduction et leur procédé de fabrication

Publications (2)

Publication Number Publication Date
EP4549601A1 EP4549601A1 (fr) 2025-05-07
EP4549601A4 true EP4549601A4 (fr) 2025-12-17

Family

ID=89848633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22953913.5A Pending EP4549601A4 (fr) 2022-08-01 2022-08-01 Granulés non cuits pour réduction et leur procédé de fabrication

Country Status (5)

Country Link
US (1) US20260028688A1 (fr)
EP (1) EP4549601A4 (fr)
CN (1) CN119677882A (fr)
AU (1) AU2022472681A1 (fr)
WO (1) WO2024028922A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017154840A1 (fr) * 2016-03-08 2017-09-14 株式会社神戸製鋼所 Procédé de fabrication de pastilles frittées, procédé de production de fer réduit et pastilles frittées
CN109055729A (zh) * 2018-09-21 2018-12-21 中国科学院城市环境研究所 一种污泥生物炭资源化利用的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5438207A (en) * 1977-08-31 1979-03-22 Nippon Steel Corp Purifying method for powder iron source containing nonferrous metals
JPS5466314A (en) * 1977-11-08 1979-05-28 Nippon Steel Corp Manufacture of reduced pellets
JPS5910411A (ja) 1982-07-09 1984-01-19 Toshiba Corp マンドレルミルの肉厚制御方法
JPS6237325A (ja) 1985-06-27 1987-02-18 Nippon Kokan Kk <Nkk> 焼成塊成鉱およびその製造方法
JPH0826416B2 (ja) 1987-04-21 1996-03-13 株式会社神戸製鋼所 耐クラスタリング性に優れた直接製鉄用または溶融還元製鉄用製鉄原料
JP2012062505A (ja) * 2010-09-14 2012-03-29 Kobe Steel Ltd 塊成物の製造方法
JP6724678B2 (ja) 2015-12-25 2020-07-15 日本製鉄株式会社 還元用原料及び還元用原料の製造方法
JP7374870B2 (ja) * 2020-09-03 2023-11-07 株式会社神戸製鋼所 鉄鉱石ペレット

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017154840A1 (fr) * 2016-03-08 2017-09-14 株式会社神戸製鋼所 Procédé de fabrication de pastilles frittées, procédé de production de fer réduit et pastilles frittées
CN109055729A (zh) * 2018-09-21 2018-12-21 中国科学院城市环境研究所 一种污泥生物炭资源化利用的方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
See also references of WO2024028922A1 *
UMADEVI T ET AL: "Effect of Iron Ore Pellet Size on its Properties and Microstructure", STEEL RESEARCH INTERNATIONAL, VERLAG STAHLEISEN GMBH., DUSSELDORF, DE, vol. 80, no. 10, 1 October 2009 (2009-10-01), pages 709 - 716, XP001557390, ISSN: 1611-3683, DOI: 10.2374/SRI08SP169 *
ZHUCHENG HUANG ET AL: "Mechanisms of strength decrease in the initial reduction of iron ore oxide pellets", POWDER TECHNOLOGY, ELSEVIER, BASEL (CH), vol. 221, 9 January 2012 (2012-01-09), pages 284 - 291, XP028473238, ISSN: 0032-5910, [retrieved on 20120112], DOI: 10.1016/J.POWTEC.2012.01.013 *

Also Published As

Publication number Publication date
CN119677882A (zh) 2025-03-21
WO2024028922A1 (fr) 2024-02-08
EP4549601A1 (fr) 2025-05-07
US20260028688A1 (en) 2026-01-29
AU2022472681A1 (en) 2025-02-13

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