JP2007031790A - 高Al鋼の二次精錬方法 - Google Patents
高Al鋼の二次精錬方法 Download PDFInfo
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- JP2007031790A JP2007031790A JP2005218119A JP2005218119A JP2007031790A JP 2007031790 A JP2007031790 A JP 2007031790A JP 2005218119 A JP2005218119 A JP 2005218119A JP 2005218119 A JP2005218119 A JP 2005218119A JP 2007031790 A JP2007031790 A JP 2007031790A
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- Prior art keywords
- steel
- slag
- sio
- secondary refining
- molten steel
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 238000007670 refining Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 title description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title 1
- 239000002893 slag Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000011109 contamination Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 20
- 238000009749 continuous casting Methods 0.000 abstract description 8
- 230000003749 cleanliness Effects 0.000 abstract description 3
- 238000005121 nitriding Methods 0.000 abstract 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 9
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- -1 aluminum chromium molybdenum Chemical compound 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000009847 ladle furnace Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
【解決手段】 高Al鋼の取鍋精錬による二次精錬の初期の造滓時に、溶鋼中のAlによる強脱酸と、強攪拌を行うことにより、スラグ組成のSiO2濃度を0.30%以下と低くコントロールすることによって、溶鋼中のAlとスラグ中のSiO2中の反応を抑制して溶鋼汚染を防止する高Al鋼の二次精錬方法である。
【選択図】 なし
Description
Claims (2)
- 高Al鋼の取鍋精錬による二次精錬の初期の造滓時に、溶鋼中のAlによる強脱酸と、強攪拌を行うことにより、スラグ組成のSiO2濃度を低くコントロールすることによって、溶鋼中のAlとスラグ中のSiO2中の反応を抑制して溶鋼汚染を防止することを特徴とする高Al鋼の二次精錬方法。
- 低くコントロールするスラグ中のSiO2濃度は、0.30%以下であることを特徴とする請求項1に記載の高Al鋼の二次精錬方法。
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JP2005218119A JP5047477B2 (ja) | 2005-07-28 | 2005-07-28 | 高Al鋼の二次精錬方法 |
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JP2005218119A JP5047477B2 (ja) | 2005-07-28 | 2005-07-28 | 高Al鋼の二次精錬方法 |
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JP2007031790A true JP2007031790A (ja) | 2007-02-08 |
JP5047477B2 JP5047477B2 (ja) | 2012-10-10 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100999197B1 (ko) | 2008-06-18 | 2010-12-07 | 주식회사 포스코 | 강의 정련 방법 |
CN103741007A (zh) * | 2013-12-23 | 2014-04-23 | 武钢集团昆明钢铁股份有限公司 | 一种减少低碳铝镇静钢中气体含量的生产方法 |
JP2021025122A (ja) * | 2019-08-09 | 2021-02-22 | 日本製鉄株式会社 | 高Al含有鋼の溶製方法 |
CN114645109A (zh) * | 2022-02-25 | 2022-06-21 | 首钢京唐钢铁联合有限责任公司 | 一种解决高铝钢钢包内渣壳的方法 |
CN116024485A (zh) * | 2022-12-19 | 2023-04-28 | 湖南华菱涟源钢铁有限公司 | 高铝钢的制备方法及高铝钢 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50155416A (ja) * | 1974-06-07 | 1975-12-15 | ||
JPS59177313A (ja) * | 1983-03-25 | 1984-10-08 | Nippon Steel Corp | 含クロム溶鋼の還元脱硫法 |
JPS6119723A (ja) * | 1984-07-06 | 1986-01-28 | Sumitomo Metal Ind Ltd | 清浄鋼の製造方法 |
JPH03158410A (ja) * | 1989-11-15 | 1991-07-08 | Kawasaki Steel Corp | 高温での耐酸化性に優れたフェライト系ステンレス鋼の製造方法 |
JPH03211214A (ja) * | 1990-01-16 | 1991-09-17 | Nippon Stainless Steel Co Ltd | 極低[o]・[s]ステンレス鋼の製造方法 |
JPH11279623A (ja) * | 1998-03-30 | 1999-10-12 | Nisshin Steel Co Ltd | 精錬容器の耐火物溶損を抑えた製造性の良い高Al含有フェライト系ステンレス鋼の溶製方法 |
JP2002339048A (ja) * | 2002-04-24 | 2002-11-27 | Nisshin Steel Co Ltd | 耐高温酸化性に優れた高Alフェライト系ステンレス鋼 |
-
2005
- 2005-07-28 JP JP2005218119A patent/JP5047477B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50155416A (ja) * | 1974-06-07 | 1975-12-15 | ||
JPS59177313A (ja) * | 1983-03-25 | 1984-10-08 | Nippon Steel Corp | 含クロム溶鋼の還元脱硫法 |
JPS6119723A (ja) * | 1984-07-06 | 1986-01-28 | Sumitomo Metal Ind Ltd | 清浄鋼の製造方法 |
JPH03158410A (ja) * | 1989-11-15 | 1991-07-08 | Kawasaki Steel Corp | 高温での耐酸化性に優れたフェライト系ステンレス鋼の製造方法 |
JPH03211214A (ja) * | 1990-01-16 | 1991-09-17 | Nippon Stainless Steel Co Ltd | 極低[o]・[s]ステンレス鋼の製造方法 |
JPH11279623A (ja) * | 1998-03-30 | 1999-10-12 | Nisshin Steel Co Ltd | 精錬容器の耐火物溶損を抑えた製造性の良い高Al含有フェライト系ステンレス鋼の溶製方法 |
JP2002339048A (ja) * | 2002-04-24 | 2002-11-27 | Nisshin Steel Co Ltd | 耐高温酸化性に優れた高Alフェライト系ステンレス鋼 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100999197B1 (ko) | 2008-06-18 | 2010-12-07 | 주식회사 포스코 | 강의 정련 방법 |
CN103741007A (zh) * | 2013-12-23 | 2014-04-23 | 武钢集团昆明钢铁股份有限公司 | 一种减少低碳铝镇静钢中气体含量的生产方法 |
JP2021025122A (ja) * | 2019-08-09 | 2021-02-22 | 日本製鉄株式会社 | 高Al含有鋼の溶製方法 |
JP7273306B2 (ja) | 2019-08-09 | 2023-05-15 | 日本製鉄株式会社 | 高Al含有鋼の溶製方法 |
CN114645109A (zh) * | 2022-02-25 | 2022-06-21 | 首钢京唐钢铁联合有限责任公司 | 一种解决高铝钢钢包内渣壳的方法 |
CN116024485A (zh) * | 2022-12-19 | 2023-04-28 | 湖南华菱涟源钢铁有限公司 | 高铝钢的制备方法及高铝钢 |
CN116024485B (zh) * | 2022-12-19 | 2024-04-09 | 湖南华菱涟源钢铁有限公司 | 高铝钢的制备方法及高铝钢 |
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