JP2013227650A - 転炉における溶銑の精錬方法 - Google Patents
転炉における溶銑の精錬方法 Download PDFInfo
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- JP2013227650A JP2013227650A JP2012239975A JP2012239975A JP2013227650A JP 2013227650 A JP2013227650 A JP 2013227650A JP 2012239975 A JP2012239975 A JP 2012239975A JP 2012239975 A JP2012239975 A JP 2012239975A JP 2013227650 A JP2013227650 A JP 2013227650A
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- refining
- gas
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- 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
-
- 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
- C21C1/025—Agents used for 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
- 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
- C21C5/35—Blowing from above and through the bath
-
- 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
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
-
- 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
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C5/4613—Refractory coated lances; Immersion lances
-
- 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
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered 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
- C21C7/064—Dephosphorising; 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
- 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
- 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
- C21C7/072—Treatment with gases
-
- 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
- C21C2250/00—Specific additives; Means for adding material different from burners or lances
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
【解決手段】 精錬用粉体供給流路と、燃焼用酸化性ガス供給流路と、精錬用酸化性ガス供給流路とを、それぞれ別々に有する上吹きランス3を用い、精錬用粉体供給流路から、石灰系媒溶剤、酸化鉄、可燃性物質のうちの1種または2種以上の精錬用粉体29を、燃料ガスまたは燃料ガスと不活性ガスとの混合ガスを搬送用ガスとして溶銑浴面に向けて供給するとともに、燃焼用酸化性ガス供給流路から酸化性ガスを供給して上吹きランスの先端下方に火炎を形成させ、且つ、精錬用酸化性ガス供給流路から酸化性ガスを溶銑浴面に向けて供給する。
【選択図】 図1
Description
[1]精錬用粉体供給流路と、燃焼用酸化性ガス供給流路と、精錬用酸化性ガス供給流路とを、それぞれ別々に有する上吹きランスを用い、前記精錬用粉体供給流路から、石灰系媒溶剤、酸化鉄、可燃性物質のうちの1種または2種以上を、燃料ガスまたは燃料ガスと不活性ガスとの混合ガスを搬送用ガスとして転炉内の溶銑浴面に向けて供給するとともに、前記燃焼用酸化性ガス供給流路から酸化性ガスを供給して上吹きランスの先端下方に火炎を形成させ、且つ、前記精錬用酸化性ガス供給流路から酸化性ガスを転炉内の溶銑浴面に向けて供給することを特徴とする、転炉における溶銑の精錬方法。
[2]前記搬送用ガスは、燃料ガスの比率が体積分率で10%以上であることを特徴とする、上記[1]に記載の転炉における溶銑の精錬方法。
[3]前記精錬用粉体供給流路から供給される可燃性物質の供給速度に応じて、前記燃焼用酸化性ガス供給流路からの酸化性ガスの供給流量を、前記可燃性物質が完全燃焼するように調整することを特徴とする、上記[1]または上記[2]に記載の転炉における溶銑の精錬方法。
2 炉本体
3 上吹きランス
4 鉄皮
5 耐火物
6 出湯口
7 底吹き羽口
8 ガス導入管
9 精錬用粉体供給管
10 燃料ガス供給管
11 燃焼用酸化性ガス供給管
12 精錬用酸化性ガス供給管
13 ディスペンサー
14 ランス本体
15 ランスチップ
16 中心孔
17 燃料ガス噴射孔
18 燃焼用酸化性ガス噴射孔
19 周囲孔
20 最内管
21 仕切り管
22 内管
23 中管
24 外管
25 最外管
26 溶銑
27 スラグ
28 攪拌用ガス
29 精錬用粉体
Claims (3)
- 精錬用粉体供給流路と、燃焼用酸化性ガス供給流路と、精錬用酸化性ガス供給流路とを、それぞれ別々に有する上吹きランスを用い、前記精錬用粉体供給流路から、石灰系媒溶剤、酸化鉄、可燃性物質のうちの1種または2種以上を、燃料ガスまたは燃料ガスと不活性ガスとの混合ガスを搬送用ガスとして転炉内の溶銑浴面に向けて供給するとともに、前記燃焼用酸化性ガス供給流路から酸化性ガスを供給して上吹きランスの先端下方に火炎を形成させ、且つ、前記精錬用酸化性ガス供給流路から酸化性ガスを転炉内の溶銑浴面に向けて供給することを特徴とする、転炉における溶銑の精錬方法。
- 前記搬送用ガスは、燃料ガスの比率が体積分率で10%以上であることを特徴とする、請求項1に記載の転炉における溶銑の精錬方法。
- 前記精錬用粉体供給流路から供給される可燃性物質の供給速度に応じて、前記燃焼用酸化性ガス供給流路からの酸化性ガスの供給流量を、前記可燃性物質が完全燃焼するように調整することを特徴とする、請求項1または請求項2に記載の転炉における溶銑の精錬方法。
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012239975A JP6036172B2 (ja) | 2012-03-29 | 2012-10-31 | 転炉における溶銑の精錬方法 |
PCT/JP2013/001997 WO2013145686A1 (ja) | 2012-03-29 | 2013-03-25 | 転炉における溶銑の精錬方法 |
TR2018/08805T TR201808805T4 (tr) | 2012-03-29 | 2013-03-25 | Dönüştürücüde sıcak metalin arıtılmasına yönelik yöntem. |
BR112014023560-0A BR112014023560B1 (pt) | 2012-03-29 | 2013-03-25 | Método para refino de metal quente em conversor |
EP13767440.4A EP2808407B1 (en) | 2012-03-29 | 2013-03-25 | Method for refining hot metal in converter |
US14/382,720 US9957581B2 (en) | 2012-03-29 | 2013-03-25 | Method for refining hot metal in converter |
IN7088DEN2014 IN2014DN07088A (ja) | 2012-03-29 | 2013-03-25 | |
CN201380018191.8A CN104245965B (zh) | 2012-03-29 | 2013-03-25 | 转炉中铁水的精炼方法 |
KR1020147028132A KR101684378B1 (ko) | 2012-03-29 | 2013-03-25 | 전로에 있어서의 용선의 정련 방법 |
TW102111031A TWI544082B (zh) | 2012-03-29 | 2013-03-28 | 轉爐中熔融生鐵的精煉方法 |
Applications Claiming Priority (3)
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JP2012075928 | 2012-03-29 | ||
JP2012075928 | 2012-03-29 | ||
JP2012239975A JP6036172B2 (ja) | 2012-03-29 | 2012-10-31 | 転炉における溶銑の精錬方法 |
Publications (2)
Publication Number | Publication Date |
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JP2013227650A true JP2013227650A (ja) | 2013-11-07 |
JP6036172B2 JP6036172B2 (ja) | 2016-11-30 |
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JP2012239975A Active JP6036172B2 (ja) | 2012-03-29 | 2012-10-31 | 転炉における溶銑の精錬方法 |
Country Status (10)
Country | Link |
---|---|
US (1) | US9957581B2 (ja) |
EP (1) | EP2808407B1 (ja) |
JP (1) | JP6036172B2 (ja) |
KR (1) | KR101684378B1 (ja) |
CN (1) | CN104245965B (ja) |
BR (1) | BR112014023560B1 (ja) |
IN (1) | IN2014DN07088A (ja) |
TR (1) | TR201808805T4 (ja) |
TW (1) | TWI544082B (ja) |
WO (1) | WO2013145686A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015218341A (ja) * | 2014-05-14 | 2015-12-07 | 新日鐵住金株式会社 | 含鉄原料の転炉溶解方法 |
JP2016151051A (ja) * | 2015-02-18 | 2016-08-22 | 株式会社神戸製鋼所 | 溶銑の脱りん処理における固体酸素源の供給方法 |
JP2017048460A (ja) * | 2015-09-01 | 2017-03-09 | Jfeスチール株式会社 | 溶銑の精錬方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101651221B1 (ko) | 2015-04-21 | 2016-08-25 | 충남대학교산학협력단 | 화염 쏠림 방지 렌스 |
CN111094597A (zh) * | 2017-09-28 | 2020-05-01 | 大阳日酸株式会社 | 熔解精炼炉的操作方法及熔解精炼炉 |
TWI735668B (zh) * | 2017-09-29 | 2021-08-11 | 日商大陽日酸股份有限公司 | 熔解、精鍊爐的操作方法及熔解、精鍊爐 |
CN111809019B (zh) * | 2020-06-30 | 2021-12-03 | 东北大学 | 一种利用高炉灰的高炉铁水脱碳方法 |
CN111826499B (zh) * | 2020-06-30 | 2021-12-03 | 东北大学 | 一种基于转炉lt除尘灰的高炉铁水脱碳处理方法 |
CN116745439A (zh) * | 2021-02-01 | 2023-09-12 | 杰富意钢铁株式会社 | 转炉的顶吹喷枪、添加副原料的方法和铁水的精炼方法 |
CN115323101B (zh) * | 2022-08-02 | 2023-12-15 | 鞍钢股份有限公司 | 一种转炉氧枪快速打火的方法 |
Citations (3)
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JP2007092158A (ja) * | 2005-09-30 | 2007-04-12 | Jfe Steel Kk | 溶銑の脱燐処理方法 |
JP2010156025A (ja) * | 2008-12-29 | 2010-07-15 | Jfe Steel Corp | 溶融還元炉の粉粒物装入用バーナーランスおよび溶融還元による金属溶湯の製造方法 |
JP2012031452A (ja) * | 2010-07-29 | 2012-02-16 | Jfe Steel Corp | 溶銑の脱燐処理方法 |
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US4642047A (en) * | 1984-08-17 | 1987-02-10 | American Combustion, Inc. | Method and apparatus for flame generation and utilization of the combustion products for heating, melting and refining |
JP3577365B2 (ja) | 1995-06-30 | 2004-10-13 | 新日本製鐵株式会社 | 溶銑の予備処理方法 |
JPH1180825A (ja) | 1997-09-09 | 1999-03-26 | Nippon Steel Corp | 転炉精錬用上吹きランスおよびそれによる転炉精錬方法 |
JP2001323312A (ja) | 2000-05-12 | 2001-11-22 | Nippon Steel Corp | 二次燃焼による反応熱の利用方法 |
WO2009119604A1 (ja) * | 2008-03-25 | 2009-10-01 | 株式会社神戸製鋼所 | 溶鉄製造方法 |
AU2009293900B2 (en) * | 2008-09-16 | 2014-01-23 | Istc Co., Ltd. | Process for producing molten iron |
-
2012
- 2012-10-31 JP JP2012239975A patent/JP6036172B2/ja active Active
-
2013
- 2013-03-25 IN IN7088DEN2014 patent/IN2014DN07088A/en unknown
- 2013-03-25 EP EP13767440.4A patent/EP2808407B1/en active Active
- 2013-03-25 US US14/382,720 patent/US9957581B2/en active Active
- 2013-03-25 BR BR112014023560-0A patent/BR112014023560B1/pt active IP Right Grant
- 2013-03-25 KR KR1020147028132A patent/KR101684378B1/ko active IP Right Grant
- 2013-03-25 WO PCT/JP2013/001997 patent/WO2013145686A1/ja active Application Filing
- 2013-03-25 TR TR2018/08805T patent/TR201808805T4/tr unknown
- 2013-03-25 CN CN201380018191.8A patent/CN104245965B/zh active Active
- 2013-03-28 TW TW102111031A patent/TWI544082B/zh active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007092158A (ja) * | 2005-09-30 | 2007-04-12 | Jfe Steel Kk | 溶銑の脱燐処理方法 |
JP2010156025A (ja) * | 2008-12-29 | 2010-07-15 | Jfe Steel Corp | 溶融還元炉の粉粒物装入用バーナーランスおよび溶融還元による金属溶湯の製造方法 |
JP2012031452A (ja) * | 2010-07-29 | 2012-02-16 | Jfe Steel Corp | 溶銑の脱燐処理方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015218341A (ja) * | 2014-05-14 | 2015-12-07 | 新日鐵住金株式会社 | 含鉄原料の転炉溶解方法 |
JP2016151051A (ja) * | 2015-02-18 | 2016-08-22 | 株式会社神戸製鋼所 | 溶銑の脱りん処理における固体酸素源の供給方法 |
JP2017048460A (ja) * | 2015-09-01 | 2017-03-09 | Jfeスチール株式会社 | 溶銑の精錬方法 |
Also Published As
Publication number | Publication date |
---|---|
US9957581B2 (en) | 2018-05-01 |
EP2808407B1 (en) | 2018-05-23 |
TW201343922A (zh) | 2013-11-01 |
JP6036172B2 (ja) | 2016-11-30 |
TWI544082B (zh) | 2016-08-01 |
IN2014DN07088A (ja) | 2015-04-10 |
BR112014023560B1 (pt) | 2020-02-18 |
WO2013145686A1 (ja) | 2013-10-03 |
KR20140133602A (ko) | 2014-11-19 |
KR101684378B1 (ko) | 2016-12-08 |
CN104245965B (zh) | 2016-07-20 |
EP2808407A1 (en) | 2014-12-03 |
EP2808407A4 (en) | 2015-09-02 |
TR201808805T4 (tr) | 2018-07-23 |
US20150020648A1 (en) | 2015-01-22 |
CN104245965A (zh) | 2014-12-24 |
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