JP2007254843A - 溶銑の脱硫処理方法 - Google Patents
溶銑の脱硫処理方法 Download PDFInfo
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- JP2007254843A JP2007254843A JP2006082370A JP2006082370A JP2007254843A JP 2007254843 A JP2007254843 A JP 2007254843A JP 2006082370 A JP2006082370 A JP 2006082370A JP 2006082370 A JP2006082370 A JP 2006082370A JP 2007254843 A JP2007254843 A JP 2007254843A
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- Prior art keywords
- metal
- desulfurization
- mass
- iron
- hot metal
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- Granted
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 104
- 230000023556 desulfurization Effects 0.000 title claims abstract description 103
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000011282 treatment Methods 0.000 title claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 34
- 230000004907 flux Effects 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims description 132
- 239000002184 metal Substances 0.000 claims description 132
- 238000013329 compounding Methods 0.000 claims description 19
- 239000004215 Carbon black (E152) Substances 0.000 claims description 16
- 229930195733 hydrocarbon Natural products 0.000 claims description 16
- 150000002430 hydrocarbons Chemical class 0.000 claims description 13
- 239000011343 solid material Substances 0.000 claims description 9
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 abstract description 45
- 239000011593 sulfur Substances 0.000 abstract description 45
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 43
- 239000000463 material Substances 0.000 abstract description 13
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 62
- 239000011777 magnesium Substances 0.000 description 60
- 239000000292 calcium oxide Substances 0.000 description 31
- 235000012255 calcium oxide Nutrition 0.000 description 31
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 23
- 239000000395 magnesium oxide Substances 0.000 description 23
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 23
- 238000002156 mixing Methods 0.000 description 16
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000002893 slag Substances 0.000 description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 8
- 229910052749 magnesium Inorganic materials 0.000 description 8
- 238000007670 refining Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 229910004261 CaF 2 Inorganic materials 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 239000010436 fluorite Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910003023 Mg-Al Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 238000005486 sulfidation Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
Images
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
【解決手段】 金属Mgの配合量を5〜30質量%、金属Alの配合量を5〜30質量%、CaO系フラックスの配合量を40質量%以上とし、金属Mgと金属AlとCaO系フラックスとを混合した粒状及び/または粉状の脱硫剤が鉄系帯材で被覆された鉄被覆脱硫用ワイヤー4を、ワイヤーフィーダー5を介して溶銑2に供給して脱硫処理する。
【選択図】 図1
Description
2 溶銑
3 スラグ
4 鉄被覆脱硫用ワイヤー
5 ワイヤーフィーダー
6 供給導管
7 転炉装入鍋
Claims (4)
- 金属Mgの配合量を5〜30質量%、金属Alの配合量を5〜30質量%、CaO系フラックスの配合量を40質量%以上とし、金属Mgと金属AlとCaO系フラックスとを混合した粒状及び/または粉状の脱硫剤が鉄系帯材で被覆された鉄被覆脱硫用ワイヤーを、溶銑中に供給して脱硫処理することを特徴とする、溶銑の脱硫処理方法。
- 前記脱硫剤中の金属Mgの一部または全部をMgOで代替し、且つ、金属Mgの配合量及びMgOの配合量が下記の(1)式を満足することを特徴とする、請求項1に記載の溶銑の脱硫処理方法。
金属Mg配合量(質量%)+[MgO配合量(質量%)/2.2]≧5 …(1) - 前記脱硫剤中の金属Alの一部または全部を炭化水素系の固体物質で代替し、且つ、金属Alの配合量及び炭化水素系固体物質の配合量が下記の(2)式を満足することを特徴とする、請求項1または請求項2に記載の溶銑の脱硫処理方法。
金属Al配合量(質量%)+[炭化水素系固体物質配合量(質量%)/0.4]≧5 …(2) - 前記鉄被覆脱硫用ワイヤーの供給速度を溶銑トン当たり0.10〜0.50kg/minとすることを特徴とする、請求項1ないし請求項3の何れか1つに記載の溶銑の脱硫処理方法。
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JP2006082370A JP4977863B2 (ja) | 2006-03-24 | 2006-03-24 | 溶銑の脱硫処理方法 |
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JP2007254843A true JP2007254843A (ja) | 2007-10-04 |
JP4977863B2 JP4977863B2 (ja) | 2012-07-18 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008133490A (ja) * | 2006-11-27 | 2008-06-12 | Jfe Steel Kk | 溶銑の脱硫方法 |
JP2012026012A (ja) * | 2010-07-26 | 2012-02-09 | Nippon Steel Corp | 溶銑の脱硫方法 |
JP2022053706A (ja) * | 2020-09-25 | 2022-04-06 | Jfeスチール株式会社 | 溶銑脱硫設備および溶銑脱硫方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06330128A (ja) * | 1993-05-17 | 1994-11-29 | Kawasaki Steel Corp | 溶銑の脱硫剤及びそれを用いた脱硫方法 |
JPH07207316A (ja) * | 1994-01-20 | 1995-08-08 | Nisshin Steel Co Ltd | 脱硫効率が高い溶銑脱硫用ワイヤ |
JPH07207318A (ja) * | 1994-01-20 | 1995-08-08 | Nisshin Steel Co Ltd | Mg−Al合金ワイヤを使用した溶銑脱硫方法及び脱硫用ワイヤ |
JPH09209026A (ja) * | 1996-02-06 | 1997-08-12 | Nisshin Steel Co Ltd | 溶鋼の同時脱酸脱硫剤およびそれを使用した溶鋼の同時脱酸脱硫方法 |
JPH10317035A (ja) * | 1997-05-19 | 1998-12-02 | Nkk Corp | 鉄系溶融合金の脱硫方法および脱硫剤 |
-
2006
- 2006-03-24 JP JP2006082370A patent/JP4977863B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06330128A (ja) * | 1993-05-17 | 1994-11-29 | Kawasaki Steel Corp | 溶銑の脱硫剤及びそれを用いた脱硫方法 |
JPH07207316A (ja) * | 1994-01-20 | 1995-08-08 | Nisshin Steel Co Ltd | 脱硫効率が高い溶銑脱硫用ワイヤ |
JPH07207318A (ja) * | 1994-01-20 | 1995-08-08 | Nisshin Steel Co Ltd | Mg−Al合金ワイヤを使用した溶銑脱硫方法及び脱硫用ワイヤ |
JPH09209026A (ja) * | 1996-02-06 | 1997-08-12 | Nisshin Steel Co Ltd | 溶鋼の同時脱酸脱硫剤およびそれを使用した溶鋼の同時脱酸脱硫方法 |
JPH10317035A (ja) * | 1997-05-19 | 1998-12-02 | Nkk Corp | 鉄系溶融合金の脱硫方法および脱硫剤 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008133490A (ja) * | 2006-11-27 | 2008-06-12 | Jfe Steel Kk | 溶銑の脱硫方法 |
JP2012026012A (ja) * | 2010-07-26 | 2012-02-09 | Nippon Steel Corp | 溶銑の脱硫方法 |
JP2022053706A (ja) * | 2020-09-25 | 2022-04-06 | Jfeスチール株式会社 | 溶銑脱硫設備および溶銑脱硫方法 |
JP7342829B2 (ja) | 2020-09-25 | 2023-09-12 | Jfeスチール株式会社 | 溶銑脱硫設備および溶銑脱硫方法 |
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