JP2007051350A - 低硫鋼の溶製方法 - Google Patents
低硫鋼の溶製方法 Download PDFInfo
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- JP2007051350A JP2007051350A JP2005238116A JP2005238116A JP2007051350A JP 2007051350 A JP2007051350 A JP 2007051350A JP 2005238116 A JP2005238116 A JP 2005238116A JP 2005238116 A JP2005238116 A JP 2005238116A JP 2007051350 A JP2007051350 A JP 2007051350A
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- molten steel
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- slag
- steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 129
- 239000010959 steel Substances 0.000 title claims abstract description 129
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 39
- 239000011593 sulfur Substances 0.000 title claims abstract description 39
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 53
- 238000007670 refining Methods 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 42
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 28
- 239000011572 manganese Substances 0.000 claims abstract description 28
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 21
- 239000011574 phosphorus Substances 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 17
- 238000005261 decarburization Methods 0.000 claims description 46
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- 238000002844 melting Methods 0.000 claims description 17
- 230000008018 melting Effects 0.000 claims description 17
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 14
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 14
- 239000004571 lime Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052742 iron Inorganic materials 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 1
- 230000000452 restraining effect Effects 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 description 49
- 230000023556 desulfurization Effects 0.000 description 49
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 15
- 238000009849 vacuum degassing Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 8
- 235000012255 calcium oxide Nutrition 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 4
- 229910000640 Fe alloy Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Images
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- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
【解決手段】溶銑段階で脱燐処理及び脱硫処理の施された溶銑を転炉で脱炭精錬して炭素含有量が0.1質量%未満の溶鋼を溶製し、この溶鋼を取鍋2に出鋼した後、取鍋内のスラグ4を除去することなく取鍋内に石灰系脱硫剤を添加し、次いで、溶鋼と石灰系脱硫剤とを攪拌して脱硫処理する。その際に、転炉における脱炭精錬では、副原料としてマンガン鉱石を使用すること、及び、脱炭精錬終了後の転炉内スラグの組成を、燐含有量が2質量%以下、MnO含有量が5質量%以上とすることが好ましい。
【選択図】図1
Description
2 取鍋
3 溶鋼
4 スラグ
5 蓋
6 インジェクションランス
7 電極
8 ガス導入管
Claims (5)
- 溶銑段階で脱燐処理及び脱硫処理の施された溶銑を転炉で脱炭精錬して炭素含有量が0.1質量%未満の溶鋼を溶製し、この溶鋼を取鍋に出鋼した後、取鍋内のスラグを除去することなく取鍋内に石灰系脱硫剤を添加し、次いで、溶鋼と石灰系脱硫剤とを攪拌して脱硫処理することを特徴とする、低硫鋼の溶製方法。
- 前記脱炭精錬終了後の転炉内スラグは、燐含有量が3質量%以下であることを特徴とする、請求項1に記載の低硫鋼の溶製方法。
- 前記転炉における脱炭精錬では、副原料としてマンガン鉱石を使用することを特徴とする、請求項1に記載の低硫鋼の溶製方法。
- 前記脱炭精錬終了後の転炉内スラグは、燐含有量が2質量%以下であり、MnO含有量が5質量%以上であることを特徴とする、請求項3に記載の低硫鋼の溶製方法。
- 前記低硫鋼は、硫黄含有量が0.003質量%以下であり、マンガン含有量が0.6質量%以上であることを特徴とする、請求項1ないし請求項4の何れか1つに記載の低硫鋼の溶製方法。
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JP2005238116A JP4742740B2 (ja) | 2005-08-19 | 2005-08-19 | 低硫鋼の溶製方法 |
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JP2007051350A true JP2007051350A (ja) | 2007-03-01 |
JP4742740B2 JP4742740B2 (ja) | 2011-08-10 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102071277A (zh) * | 2010-12-23 | 2011-05-25 | 攀钢集团钢铁钒钛股份有限公司 | 一种转炉脱磷炼钢方法 |
JP2013112855A (ja) * | 2011-11-29 | 2013-06-10 | Jfe Steel Corp | 低炭素高マンガン鋼の溶製方法 |
CN103555886A (zh) * | 2013-11-11 | 2014-02-05 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种含钒铁水冶炼超低硫钢的方法 |
US20140096643A1 (en) * | 2011-08-12 | 2014-04-10 | Jfe Steel Corporation | Molten steel desulfurization method, molten steel secondary refining method, and molten steel manufacturing method |
CN114622053A (zh) * | 2022-03-31 | 2022-06-14 | 宝武集团鄂城钢铁有限公司 | 转炉终点高效脱硫的冶炼方法 |
CN114657314A (zh) * | 2022-03-17 | 2022-06-24 | 山东钢铁集团日照有限公司 | 一种低成本冶炼极低硫钢的转炉加料方法 |
CN115305306A (zh) * | 2021-05-07 | 2022-11-08 | 河北龙凤山铸业有限公司 | 火法提纯制备4n级高纯铁超低硫且超低氮控制方法 |
CN115323249A (zh) * | 2022-08-02 | 2022-11-11 | 首钢京唐钢铁联合有限责任公司 | 一种钢种的冶炼方法、容器装置 |
CN115466821A (zh) * | 2022-08-25 | 2022-12-13 | 福建三宝钢铁有限公司 | 一种易切削钢20MnV6S电炉冶炼工艺 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09217110A (ja) * | 1996-02-14 | 1997-08-19 | Sumitomo Metal Ind Ltd | 超低硫鋼の溶製方法 |
JP2000212633A (ja) * | 1999-01-28 | 2000-08-02 | Kawasaki Steel Corp | 溶鋼の取鍋精錬における脱硫方法 |
-
2005
- 2005-08-19 JP JP2005238116A patent/JP4742740B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09217110A (ja) * | 1996-02-14 | 1997-08-19 | Sumitomo Metal Ind Ltd | 超低硫鋼の溶製方法 |
JP2000212633A (ja) * | 1999-01-28 | 2000-08-02 | Kawasaki Steel Corp | 溶鋼の取鍋精錬における脱硫方法 |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102071277A (zh) * | 2010-12-23 | 2011-05-25 | 攀钢集团钢铁钒钛股份有限公司 | 一种转炉脱磷炼钢方法 |
US20140096643A1 (en) * | 2011-08-12 | 2014-04-10 | Jfe Steel Corporation | Molten steel desulfurization method, molten steel secondary refining method, and molten steel manufacturing method |
US10287644B2 (en) | 2011-08-12 | 2019-05-14 | Jfe Steel Corporation | Molten steel desulfurization method, molten steel secondary refining method, and molten steel manufacturing method |
US11035014B2 (en) | 2011-08-12 | 2021-06-15 | Jfe Steel Corporation | Molten steel desulfurization method, molten steel secondary refining method, and molten steel manufacturing method |
JP2013112855A (ja) * | 2011-11-29 | 2013-06-10 | Jfe Steel Corp | 低炭素高マンガン鋼の溶製方法 |
CN103555886A (zh) * | 2013-11-11 | 2014-02-05 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种含钒铁水冶炼超低硫钢的方法 |
CN115305306B (zh) * | 2021-05-07 | 2023-11-24 | 河北龙凤山铸业有限公司 | 火法提纯制备4n级高纯铁超低硫且超低氮控制方法 |
CN115305306A (zh) * | 2021-05-07 | 2022-11-08 | 河北龙凤山铸业有限公司 | 火法提纯制备4n级高纯铁超低硫且超低氮控制方法 |
CN114657314A (zh) * | 2022-03-17 | 2022-06-24 | 山东钢铁集团日照有限公司 | 一种低成本冶炼极低硫钢的转炉加料方法 |
CN114622053A (zh) * | 2022-03-31 | 2022-06-14 | 宝武集团鄂城钢铁有限公司 | 转炉终点高效脱硫的冶炼方法 |
CN115323249A (zh) * | 2022-08-02 | 2022-11-11 | 首钢京唐钢铁联合有限责任公司 | 一种钢种的冶炼方法、容器装置 |
CN115466821A (zh) * | 2022-08-25 | 2022-12-13 | 福建三宝钢铁有限公司 | 一种易切削钢20MnV6S电炉冶炼工艺 |
CN115466821B (zh) * | 2022-08-25 | 2023-09-08 | 福建三宝钢铁有限公司 | 一种易切削钢20MnV6S电炉冶炼工艺 |
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