JP4411934B2 - 低燐溶銑の製造方法 - Google Patents
低燐溶銑の製造方法 Download PDFInfo
- Publication number
- JP4411934B2 JP4411934B2 JP2003367888A JP2003367888A JP4411934B2 JP 4411934 B2 JP4411934 B2 JP 4411934B2 JP 2003367888 A JP2003367888 A JP 2003367888A JP 2003367888 A JP2003367888 A JP 2003367888A JP 4411934 B2 JP4411934 B2 JP 4411934B2
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- Prior art keywords
- hot metal
- blowing
- scrap
- furnace
- dephosphorization
- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
Claims (2)
- 上下両吹き機能を有する転炉形式の炉を用いて、炉内の溶銑に脱燐剤を添加する工程と、酸素ガスを上吹きしながら炉底からガスを流して溶銑を撹拌する吹錬工程と、を備える低燐溶銑の製造方法において、
スクラップの全量もしくはその一部を、吹錬工程中に炉上から溶銑に添加し、吹錬工程中に添加するスクラップの添加時期を、吹錬工程期間の前半までとし、脱燐処理前の溶銑温度を1200℃〜1330℃に維持すると共に、脱燐処理後の溶銑温度を1310℃〜1347℃に維持して、溶銑配合率を90.9〜95.2%とすることを特徴とする低燐溶銑の製造方法。 - 前記脱燐剤としてフッ素化合物が含まれないことを特徴とする、請求項1に記載の低燐溶銑の製造方法。
Priority Applications (1)
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JP2003367888A JP4411934B2 (ja) | 2003-10-28 | 2003-10-28 | 低燐溶銑の製造方法 |
Applications Claiming Priority (1)
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JP2003367888A JP4411934B2 (ja) | 2003-10-28 | 2003-10-28 | 低燐溶銑の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005133117A JP2005133117A (ja) | 2005-05-26 |
JP4411934B2 true JP4411934B2 (ja) | 2010-02-10 |
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ID=34645759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003367888A Expired - Fee Related JP4411934B2 (ja) | 2003-10-28 | 2003-10-28 | 低燐溶銑の製造方法 |
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JP (1) | JP4411934B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20230133976A (ko) | 2021-01-26 | 2023-09-19 | 제이에프이 스틸 가부시키가이샤 | 전로 제강 방법 |
JP7211557B2 (ja) * | 2021-01-26 | 2023-01-24 | Jfeスチール株式会社 | 溶鉄の精錬方法 |
EP4261290A4 (en) | 2021-01-26 | 2024-05-15 | JFE Steel Corporation | METHOD FOR REFINING MOLTEN IRON |
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2003
- 2003-10-28 JP JP2003367888A patent/JP4411934B2/ja not_active Expired - Fee Related
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JP2005133117A (ja) | 2005-05-26 |
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