EP1457574A4 - Method for pretreatment of molten iron and method for refining - Google Patents
Method for pretreatment of molten iron and method for refiningInfo
- Publication number
- EP1457574A4 EP1457574A4 EP02772944A EP02772944A EP1457574A4 EP 1457574 A4 EP1457574 A4 EP 1457574A4 EP 02772944 A EP02772944 A EP 02772944A EP 02772944 A EP02772944 A EP 02772944A EP 1457574 A4 EP1457574 A4 EP 1457574A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- molten iron
- carbon source
- refining
- injection
- pretreatment
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0025—Adding carbon material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/32—Blowing from above
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001295874 | 2001-09-27 | ||
JP2001295874A JP3854482B2 (en) | 2001-09-27 | 2001-09-27 | Hot metal pretreatment method and refining method |
PCT/JP2002/010108 WO2003029498A1 (en) | 2001-09-27 | 2002-09-27 | Method for pretreatment of molten iron and method for refining |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1457574A1 EP1457574A1 (en) | 2004-09-15 |
EP1457574A4 true EP1457574A4 (en) | 2006-02-15 |
EP1457574B1 EP1457574B1 (en) | 2018-05-30 |
Family
ID=19117229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02772944.1A Expired - Fee Related EP1457574B1 (en) | 2001-09-27 | 2002-09-27 | Method for pretreatment of molten iron and method for refining |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1457574B1 (en) |
JP (1) | JP3854482B2 (en) |
KR (1) | KR100658807B1 (en) |
WO (1) | WO2003029498A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100909691B1 (en) * | 2002-12-18 | 2009-07-29 | 주식회사 포스코 | Molten steel delineation method using high purity iron oxide in vacuum degassing facility |
JP4735169B2 (en) * | 2005-09-30 | 2011-07-27 | Jfeスチール株式会社 | Hot metal dephosphorization method |
JP5689024B2 (en) * | 2010-06-07 | 2015-03-25 | 株式会社神戸製鋼所 | Dephosphorization method of hot metal using dust |
CN104126019B (en) | 2011-12-20 | 2017-06-23 | 杰富意钢铁株式会社 | Converter steel making method |
JP5979017B2 (en) * | 2012-01-19 | 2016-08-24 | Jfeスチール株式会社 | Hot metal refining method |
CN115574554A (en) * | 2022-09-27 | 2023-01-06 | 首钢集团有限公司 | Lime powder drying device, converter and lime powder blowing method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62170409A (en) * | 1986-01-21 | 1987-07-27 | Kobe Steel Ltd | Preliminary treatment of molten iron |
EP0714989A1 (en) * | 1993-06-30 | 1996-06-05 | Nippon Steel Corporation | Steel manufacturing method using converter |
JPH0920914A (en) * | 1995-06-30 | 1997-01-21 | Nippon Steel Corp | Pretreatment for molten iron |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60221511A (en) * | 1984-04-17 | 1985-11-06 | Nippon Steel Corp | Method for carburizing and melt-refining molten iron |
JPH02228412A (en) * | 1989-02-28 | 1990-09-11 | Kobe Steel Ltd | Pretreatment of molten iron |
JPH07278636A (en) * | 1994-04-13 | 1995-10-24 | Nippon Steel Corp | Desiliconizing method of molten iron |
-
2001
- 2001-09-27 JP JP2001295874A patent/JP3854482B2/en not_active Expired - Fee Related
-
2002
- 2002-09-27 KR KR1020047004598A patent/KR100658807B1/en active IP Right Grant
- 2002-09-27 WO PCT/JP2002/010108 patent/WO2003029498A1/en active Application Filing
- 2002-09-27 EP EP02772944.1A patent/EP1457574B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62170409A (en) * | 1986-01-21 | 1987-07-27 | Kobe Steel Ltd | Preliminary treatment of molten iron |
EP0714989A1 (en) * | 1993-06-30 | 1996-06-05 | Nippon Steel Corporation | Steel manufacturing method using converter |
JPH0920914A (en) * | 1995-06-30 | 1997-01-21 | Nippon Steel Corp | Pretreatment for molten iron |
Non-Patent Citations (4)
Title |
---|
KISHIDA T ET AL: "CONSTRUCTION AND OPERATION OF HOT METAL DEPHOSPHORIZATION PLANT AT THE WAKAYAMA STEEL WORKS", SUMITOMO SEARCH, SUMITOMO METAL INDUSTRIES, TOKYO, JP, vol. 33, November 1986 (1986-11-01), pages 9 - 15, XP009010700, ISSN: 0585-9131 * |
PATENT ABSTRACTS OF JAPAN vol. 012, no. 015 (C - 469) 16 January 1988 (1988-01-16) * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 05 30 May 1997 (1997-05-30) * |
See also references of WO03029498A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2003105418A (en) | 2003-04-09 |
KR100658807B1 (en) | 2006-12-19 |
KR20040033326A (en) | 2004-04-21 |
EP1457574B1 (en) | 2018-05-30 |
JP3854482B2 (en) | 2006-12-06 |
EP1457574A1 (en) | 2004-09-15 |
WO2003029498A1 (en) | 2003-04-10 |
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Inventor name: OGAWA, YUJI.,C/O NIPPON STEEL CORP. Inventor name: ISHII, HIROMI,C/O NIPPON STEEL CORP.MURORAN Inventor name: HIRATA, HIROSHI,C/O NIPPON STEEL CORP. MURORAN Inventor name: HAYASHI, HAROAKI,C/O NIPPON STEEL CORP.MURORAN Inventor name: SASAKI, NAOTO,C/O NIPPON STEEL CORP. |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HIRATA, HIROSHI,C/O NIPPON STEEL CORP. MURORAN Inventor name: ISHII, HIROMI,C/O NIPPON STEEL CORP.MURORAN Inventor name: OGAWA, YUJI.,C/O NIPPON STEEL CORP. Inventor name: SASAKI, NAOTO,C/O NIPPON STEEL CORP. Inventor name: HAYASHI, HIROAKI,C/O NIPPON STEEL CORP.MURORAN |
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