JP7736229B1 - 直接還元炉の操業方法および還元鉄の製造方法 - Google Patents

直接還元炉の操業方法および還元鉄の製造方法

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Publication number
JP7736229B1
JP7736229B1 JP2025536415A JP2025536415A JP7736229B1 JP 7736229 B1 JP7736229 B1 JP 7736229B1 JP 2025536415 A JP2025536415 A JP 2025536415A JP 2025536415 A JP2025536415 A JP 2025536415A JP 7736229 B1 JP7736229 B1 JP 7736229B1
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JP
Japan
Prior art keywords
direct reduction
reduction furnace
gas
furnace
operating
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
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JP2025536415A
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English (en)
Japanese (ja)
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JPWO2025158891A1 (https=
JPWO2025158891A5 (https=
Inventor
佳子 中原
純仁 小澤
泰平 野内
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
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Publication of JPWO2025158891A1 publication Critical patent/JPWO2025158891A1/ja
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Publication of JPWO2025158891A5 publication Critical patent/JPWO2025158891A5/ja
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • C21B11/02—Making pig-iron other than in blast furnaces in low shaft furnaces or 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
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Iron (AREA)
JP2025536415A 2024-01-24 2025-01-07 直接還元炉の操業方法および還元鉄の製造方法 Active JP7736229B1 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2024008408 2024-01-24
JP2024008408 2024-01-24
PCT/JP2025/000175 WO2025158891A1 (ja) 2024-01-24 2025-01-07 直接還元炉の操業方法および還元鉄の製造方法

Publications (3)

Publication Number Publication Date
JPWO2025158891A1 JPWO2025158891A1 (https=) 2025-07-31
JP7736229B1 true JP7736229B1 (ja) 2025-09-09
JPWO2025158891A5 JPWO2025158891A5 (https=) 2025-12-23

Family

ID=96544802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2025536415A Active JP7736229B1 (ja) 2024-01-24 2025-01-07 直接還元炉の操業方法および還元鉄の製造方法

Country Status (2)

Country Link
JP (1) JP7736229B1 (https=)
WO (1) WO2025158891A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55144402A (en) * 1979-04-24 1980-11-11 Foster Wheeler Corp Production of reducing gas to be blown into furnace
WO2022264666A1 (ja) * 2021-06-15 2022-12-22 Ｊｆｅスチール株式会社 シャフト炉の操業方法及び還元鉄の製造方法
CN115852078A (zh) * 2022-12-09 2023-03-28 射日能源贸易有限公司 一种用氢还原铁的矿热炉设备和方法
CN117128773A (zh) * 2023-08-24 2023-11-28 辽宁科技大学 一种基于导流板式气基竖炉的还原铁精矿粉的系统和方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55144402A (en) * 1979-04-24 1980-11-11 Foster Wheeler Corp Production of reducing gas to be blown into furnace
WO2022264666A1 (ja) * 2021-06-15 2022-12-22 Ｊｆｅスチール株式会社 シャフト炉の操業方法及び還元鉄の製造方法
CN115852078A (zh) * 2022-12-09 2023-03-28 射日能源贸易有限公司 一种用氢还原铁的矿热炉设备和方法
CN117128773A (zh) * 2023-08-24 2023-11-28 辽宁科技大学 一种基于导流板式气基竖炉的还原铁精矿粉的系统和方法

Also Published As

Publication number Publication date
JPWO2025158891A1 (https=) 2025-07-31
WO2025158891A1 (ja) 2025-07-31

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