JP4972974B2 - 溶銑の脱硫方法 - Google Patents
溶銑の脱硫方法 Download PDFInfo
- Publication number
- JP4972974B2 JP4972974B2 JP2006087545A JP2006087545A JP4972974B2 JP 4972974 B2 JP4972974 B2 JP 4972974B2 JP 2006087545 A JP2006087545 A JP 2006087545A JP 2006087545 A JP2006087545 A JP 2006087545A JP 4972974 B2 JP4972974 B2 JP 4972974B2
- Authority
- JP
- Japan
- Prior art keywords
- desulfurization
- hot metal
- slag
- recovered
- agent
- 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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- 238000006477 desulfuration reaction Methods 0.000 title claims description 134
- 230000023556 desulfurization Effects 0.000 title claims description 134
- 239000002184 metal Substances 0.000 title claims description 77
- 229910052751 metal Inorganic materials 0.000 title claims description 77
- 238000000034 method Methods 0.000 title claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 71
- 239000002893 slag Substances 0.000 claims description 67
- 238000011084 recovery Methods 0.000 claims description 18
- 238000011282 treatment Methods 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 11
- 230000003009 desulfurizing effect Effects 0.000 description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000003860 storage Methods 0.000 description 8
- 238000003756 stirring Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000001186 cumulative effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
11:大塊、12:地金、13:ショベルカー、14:旋回アーム、15:掴み爪、17:溶銑取鍋、21:ホッパー、22:新脱硫剤
Claims (2)
- 先行する溶銑脱硫処理の際に発生した脱硫スラグをスラグ回収容器中に貯留する段階と、貯留された脱硫スラグのうちから高温かつ粉粒状の脱硫スラグのみを選別して高温の回収脱硫剤とする段階と、前記高温の回収脱硫剤を新脱硫剤とともに溶銑中に投入してインペラー脱硫する段階と、からなることを特徴とする溶銑の脱硫方法。
- 高温の回収脱硫剤は、温度が500℃以上であり、かつ粒径が50mm以下のものであることを特徴とする請求項1記載の溶銑の脱硫方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006087545A JP4972974B2 (ja) | 2006-03-28 | 2006-03-28 | 溶銑の脱硫方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006087545A JP4972974B2 (ja) | 2006-03-28 | 2006-03-28 | 溶銑の脱硫方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007262465A JP2007262465A (ja) | 2007-10-11 |
JP4972974B2 true JP4972974B2 (ja) | 2012-07-11 |
Family
ID=38635728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006087545A Active JP4972974B2 (ja) | 2006-03-28 | 2006-03-28 | 溶銑の脱硫方法 |
Country Status (1)
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JP (1) | JP4972974B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5994764B2 (ja) * | 2013-11-13 | 2016-09-21 | Jfeスチール株式会社 | スラグポット内面に石灰スラリーを散布する装置及び方法 |
BR112015009813B1 (pt) | 2015-04-27 | 2018-01-23 | Jfe Steel Corporation | Método para reciclar escória de dessulfuração |
JP6555281B2 (ja) * | 2017-01-25 | 2019-08-07 | Jfeスチール株式会社 | 脱硫スラグの再使用方法及び投入装置 |
CN115627312A (zh) * | 2022-09-19 | 2023-01-20 | 首钢京唐钢铁联合有限责任公司 | 铁水的脱硫方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2412666A1 (en) * | 2000-06-14 | 2002-12-12 | Nkk Corporation | Method for manufacturing hot metal desulfurizing agent and apparatus for same |
JP4818567B2 (ja) * | 2000-09-14 | 2011-11-16 | Jfeスチール株式会社 | 精錬剤および精錬方法 |
JP4546661B2 (ja) * | 2001-04-10 | 2010-09-15 | 新日本製鐵株式会社 | 脱硫スラグを再利用した溶銑脱硫剤 |
JP3960164B2 (ja) * | 2002-08-16 | 2007-08-15 | Jfeスチール株式会社 | 脱硫スラグの再利用方法 |
JP3974863B2 (ja) * | 2003-02-17 | 2007-09-12 | 新日本製鐵株式会社 | スラグの再利用法 |
JP4933032B2 (ja) * | 2004-02-27 | 2012-05-16 | Jfeスチール株式会社 | 溶銑の脱硫方法 |
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2006
- 2006-03-28 JP JP2006087545A patent/JP4972974B2/ja active Active
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JP2007262465A (ja) | 2007-10-11 |
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