GB1420179A - Nitrogen control in argon-oxygen refining of molten metal - Google Patents
Nitrogen control in argon-oxygen refining of molten metalInfo
- Publication number
- GB1420179A GB1420179A GB1890073A GB1890073A GB1420179A GB 1420179 A GB1420179 A GB 1420179A GB 1890073 A GB1890073 A GB 1890073A GB 1890073 A GB1890073 A GB 1890073A GB 1420179 A GB1420179 A GB 1420179A
- Authority
- GB
- United Kingdom
- Prior art keywords
- nitrogen
- oxygen
- decarburization
- melt
- gas
- 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.)
- Expired
Links
Classifications
-
- 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
- C21C7/0685—Decarburising of stainless steel
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
-
- 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
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
1420179 Nitrogen control in refining of molten metal JOSLYN Mfg & SUPPLY CO and UNION CARBIDE CORP 19 April 1973 [20 April 1972] 18900/73 Heading C7D The nitrogen content of molten ferrous metal and alloys thereof (e.g. low carbon iron, carbon steel, stainless steel or iron containing nickel based alloy) is adjusted to any desired level from 10 p.p.m to 90% of the level at which nitrogen at ambient pressure is in equilibrium with the nitrogen dissolved in the melt by injecting during an initial period of decarburization a gas mixture consisting essentially of oxygen and nitrogen (e.g. by injection below the surface of the melt) wherein the percentage of nitrogen is such that the partial pressure of nitrogen in the atmosphere in contact with the melt is greater than the partial pressure of nitrogen in equilibrium with the desired nitrogen content of the melt and injecting through the remaining period of the decarburization a mixture of oxygen and a monatomic gas (e.g. argon) or oxygen, a monatomic gas and nitrogen and continuing injection with a monatomic gas and /or nitrogen and optionally oxygen until the nitrogen content of the melt reaches the desired level. The gas mixture used during the remaining period of the decarburization may have an oxygen to monatomic gas or oxygen to monatomic gas and nitrogen ratio lower than the oxygen to nitrogen ratio used in the first period of decarburization which may be terminated after 50-70% of the oxygen recessory for decarburization has been injected. The decarburized melt may be reduced during the continued injection following decarburization using silicon, aluminium, hydrogen, anmonia, methane, propane or natural gas and desulphurized, deslagged and final composition and temperature adjustments made thereto (e.g. by injecting nitrogen to increase the nitrogen content to the desired level up to within 90% of its equilibrium value).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24573372A | 1972-04-20 | 1972-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1420179A true GB1420179A (en) | 1976-01-07 |
Family
ID=22927861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1890073A Expired GB1420179A (en) | 1972-04-20 | 1973-04-19 | Nitrogen control in argon-oxygen refining of molten metal |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US3754894A (en) |
| JP (1) | JPS5213493B2 (en) |
| AT (1) | AT340453B (en) |
| AU (1) | AU472272B2 (en) |
| BE (1) | BE798482A (en) |
| BR (1) | BR7302813D0 (en) |
| CA (1) | CA980127A (en) |
| CS (1) | CS256352B2 (en) |
| DD (1) | DD103264A5 (en) |
| ES (1) | ES413940A1 (en) |
| FI (1) | FI73740C (en) |
| FR (1) | FR2180999B1 (en) |
| GB (1) | GB1420179A (en) |
| HU (1) | HU166874B (en) |
| IL (1) | IL42068A (en) |
| IT (1) | IT980292B (en) |
| NO (1) | NO134527C (en) |
| PL (1) | PL85660B1 (en) |
| SE (1) | SE426175B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998666A (en) * | 1975-07-30 | 1976-12-21 | United States Steel Corporation | Subscale reaction strengthening of low carbon ferrous metal stock |
| US4081270A (en) * | 1977-04-11 | 1978-03-28 | Union Carbide Corporation | Renitrogenation of basic-oxygen steels during decarburization |
| US4260415A (en) * | 1979-12-12 | 1981-04-07 | Allegheny Ludlum Steel Corporation | Decarburizing molten metal |
| JPS57155314A (en) * | 1981-02-25 | 1982-09-25 | Sumitomo Metal Ind Ltd | Refining of high-cr steel |
| US4436553A (en) | 1982-01-22 | 1984-03-13 | Union Carbide Corporation | Process to produce low hydrogen steel |
| JPS5955972U (en) * | 1982-10-05 | 1984-04-12 | 三洋電機株式会社 | Storage case for electric razor |
| DE3347718C2 (en) * | 1983-09-02 | 1986-05-28 | Ulrich Dipl.-Ing. 5905 Freudenberg Glasmeyer | Process for the production of steels with a high degree of purity and low gas content in steelworks and steel foundries |
| US4699654A (en) * | 1986-04-08 | 1987-10-13 | Union Carbide Corporation | Melting furnace and method for melting metal |
| JPH08928B2 (en) * | 1988-09-29 | 1996-01-10 | 川崎製鉄株式会社 | Refining method for high N stainless steel |
| US5327357A (en) * | 1991-12-03 | 1994-07-05 | Praxair Technology, Inc. | Method of decarburizing molten metal in the refining of steel using neural networks |
| US6572792B1 (en) * | 1999-10-13 | 2003-06-03 | Atomic Ordered Materials, L.L.C. | Composition of matter tailoring: system 1 |
| US6921497B2 (en) * | 1999-10-13 | 2005-07-26 | Electromagnetics Corporation | Composition of matter tailoring: system I |
| DE10012837C1 (en) * | 2000-03-16 | 2001-07-26 | Vsg En & Schmiedetechnik Gmbh | Production of steel alloy with a precisely defined nitrogen content comprises adding gaseous alloying component and inert gas to atmosphere in vessel with adjustment of pressure and concentration of the inert gas and the alloying component |
| US7655160B2 (en) * | 2005-02-23 | 2010-02-02 | Electromagnetics Corporation | Compositions of matter: system II |
| KR100922061B1 (en) * | 2007-12-12 | 2009-10-16 | 주식회사 포스코 | Method of manufacturing ultra low carbon ferritic stainless steel |
| CN102021272B (en) * | 2009-09-17 | 2012-07-18 | 宝山钢铁股份有限公司 | Method for controlling content of nitrogen for stainless steel smelting |
| JP5819977B2 (en) | 2010-11-22 | 2015-11-24 | エレクトロマグネティクス コーポレーション | Device for tailoring substances |
| CN106950932A (en) * | 2017-04-14 | 2017-07-14 | 长江大学 | With grey systems GM（1, N）The natural gas decarbonization device effect analysis method of model |
| CN111592205A (en) * | 2020-06-01 | 2020-08-28 | 江苏科技大学 | Boats and ships kitchen garbage and domestic sewage recovery processing marsh gas utilization system |
| CN115125366B (en) * | 2021-03-25 | 2024-05-10 | 上海梅山钢铁股份有限公司 | Intelligent production control method for argon blowing station |
-
1972
- 1972-04-20 US US00245733A patent/US3754894A/en not_active Expired - Lifetime
-
1973
- 1973-04-09 CA CA168,269A patent/CA980127A/en not_active Expired
- 1973-04-10 AU AU54305/73A patent/AU472272B2/en not_active Expired
- 1973-04-18 NO NO1661/73A patent/NO134527C/no unknown
- 1973-04-18 BR BR2813/73A patent/BR7302813D0/en unknown
- 1973-04-19 IT IT49562/73A patent/IT980292B/en active
- 1973-04-19 GB GB1890073A patent/GB1420179A/en not_active Expired
- 1973-04-19 BE BE130231A patent/BE798482A/en not_active IP Right Cessation
- 1973-04-19 AT AT351373A patent/AT340453B/en not_active IP Right Cessation
- 1973-04-19 FI FI731278A patent/FI73740C/en active
- 1973-04-19 HU HUJO194A patent/HU166874B/hu unknown
- 1973-04-19 FR FR7314355A patent/FR2180999B1/fr not_active Expired
- 1973-04-19 CS CS732838A patent/CS256352B2/en unknown
- 1973-04-19 SE SE7305623A patent/SE426175B/en unknown
- 1973-04-19 JP JP48043741A patent/JPS5213493B2/ja not_active Expired
- 1973-04-19 ES ES413940A patent/ES413940A1/en not_active Expired
- 1973-04-19 IL IL42068A patent/IL42068A/en unknown
- 1973-04-20 PL PL1973162057A patent/PL85660B1/pl unknown
- 1973-04-23 DD DD170360A patent/DD103264A5/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT340453B (en) | 1977-12-12 |
| IL42068A0 (en) | 1973-06-29 |
| IT980292B (en) | 1974-09-30 |
| HU166874B (en) | 1975-06-28 |
| FI73740B (en) | 1987-07-31 |
| AU5430573A (en) | 1974-10-10 |
| ES413940A1 (en) | 1976-02-01 |
| NO134527B (en) | 1976-07-19 |
| SE426175B (en) | 1982-12-13 |
| BE798482A (en) | 1973-10-19 |
| DE2320165A1 (en) | 1973-10-31 |
| CA980127A (en) | 1975-12-23 |
| PL85660B1 (en) | 1976-04-30 |
| US3754894A (en) | 1973-08-28 |
| DE2320165B2 (en) | 1976-02-26 |
| FR2180999B1 (en) | 1976-05-28 |
| FI73740C (en) | 1988-11-22 |
| ATA351373A (en) | 1977-04-15 |
| CS256352B2 (en) | 1988-04-15 |
| DD103264A5 (en) | 1974-01-12 |
| BR7302813D0 (en) | 1974-06-27 |
| IL42068A (en) | 1975-11-25 |
| JPS5213493B2 (en) | 1977-04-14 |
| NO134527C (en) | 1976-10-27 |
| AU472272B2 (en) | 1976-05-20 |
| FR2180999A1 (en) | 1973-11-30 |
| JPS4921317A (en) | 1974-02-25 |
| CS283873A2 (en) | 1987-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |