RU2009101565A - METHOD FOR Smelting RAIL STEEL - Google Patents
METHOD FOR Smelting RAIL STEEL Download PDFInfo
- Publication number
- RU2009101565A RU2009101565A RU2009101565/02A RU2009101565A RU2009101565A RU 2009101565 A RU2009101565 A RU 2009101565A RU 2009101565/02 A RU2009101565/02 A RU 2009101565/02A RU 2009101565 A RU2009101565 A RU 2009101565A RU 2009101565 A RU2009101565 A RU 2009101565A
- Authority
- RU
- Russia
- Prior art keywords
- amount
- metal
- furnace
- filling
- filling mass
- Prior art date
Links
Classifications
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- 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
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Способ выплавки рельсовой стали, включающий подачу в дуговую электросталеплавильную печь в качестве металлошихты металлолома и жидкого чугуна, расплавление, окислительный период, выплавку стали сериями, выпуск плавки с оставлением шлака и части металла в печи, присадку в ковш во время выпуска твердой шлакообразующей смеси, раскислителей и легирующих, доводку стали по температуре и химическому составу на агрегате ковш-печь, отличающийся тем, что заливку жидкого чугуна с содержанием кремния не более 0,45% и фосфора не более 0,09% в количестве 25-75% от массы завалки производят на оставшийся в печи шлак и часть металла, после заливки производят завалку металлолома в количестве 15-35% от массы завалки, полуфабрикат композиционный в количестве 10-40% от массы завалки и извести в количестве 3,0-4,3% от массы завалки, при расплавлении и в окислительный период производят продувку газообразным кислородом с расходом 6000-12000 м3/ч, присадку извести в количестве 0,4-1,3% от массы завалки порциями по 50-200 кг и вдувание углеродсодержащего порошка с интенсивностью 15-100 кг/мин. A method for smelting rail steel, including feeding into an electric arc furnace as a metal charge of scrap metal and liquid iron, melting, oxidation period, smelting steel in series, tapping the smelt leaving slag and part of the metal in the furnace, adding to the ladle during tapping solid slag-forming mixture, deoxidizers and alloying, finishing the steel in terms of temperature and chemical composition on the ladle-furnace unit, characterized in that the pouring of liquid iron with a silicon content of no more than 0.45% and phosphorus of no more than 0.09% in an amount of 25-75% of the filling mass is performed for the slag and part of the metal remaining in the furnace, after pouring, scrap metal is filled in an amount of 15-35% of the filling mass, a semi-finished composite product in an amount of 10-40% of the filling mass and lime in an amount of 3.0-4.3% of the filling mass , during melting and during the oxidizing period, purge with gaseous oxygen at a flow rate of 6000-12000 m3 / h, lime additive in an amount of 0.4-1.3% of the filling mass in portions and 50-200 kg and injection of carbon-containing powder with an intensity of 15-100 kg / min.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2009101565A RU2398889C1 (en) | 2009-01-19 | 2009-01-19 | Procedure for melting rail steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2009101565A RU2398889C1 (en) | 2009-01-19 | 2009-01-19 | Procedure for melting rail steel |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2009101565A true RU2009101565A (en) | 2010-07-27 |
RU2398889C1 RU2398889C1 (en) | 2010-09-10 |
Family
ID=42697720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2009101565A RU2398889C1 (en) | 2009-01-19 | 2009-01-19 | Procedure for melting rail steel |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2398889C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111842404A (en) * | 2020-06-02 | 2020-10-30 | 广东忠能科技集团有限公司 | Low-nitrogen slag treatment method |
-
2009
- 2009-01-19 RU RU2009101565A patent/RU2398889C1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111842404A (en) * | 2020-06-02 | 2020-10-30 | 广东忠能科技集团有限公司 | Low-nitrogen slag treatment method |
Also Published As
Publication number | Publication date |
---|---|
RU2398889C1 (en) | 2010-09-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20110120 |