FR2388889A1 - Procede perfectionne d'affinage de metal fondu - Google Patents
Procede perfectionne d'affinage de metal fonduInfo
- Publication number
- FR2388889A1 FR2388889A1 FR7713221A FR7713221A FR2388889A1 FR 2388889 A1 FR2388889 A1 FR 2388889A1 FR 7713221 A FR7713221 A FR 7713221A FR 7713221 A FR7713221 A FR 7713221A FR 2388889 A1 FR2388889 A1 FR 2388889A1
- Authority
- FR
- France
- Prior art keywords
- impurity
- constituents
- oxidation
- proportion
- rate
- 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.)
- Withdrawn
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
- 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
-
- 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
- C21C5/005—Manufacture 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
- 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
- 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
- C21C5/4673—Measuring and sampling devices
- C21C2005/468—Means for determining the weight of the converter
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
L'invention a pour objet un procédé d'affinage de métal fondu contenant une impureté oxydable préférentiellement à un ou des constituants choisis du métal et qui forme un oxyde gazeux, ce procédé étant caractérisé en ce qu'il consiste à injecter de l'oxygène et un gaz diluant dans le métal fondu contenu dans un récipient de manière à réduire la proportion de l'impureté du métal par dégagement sous forme d'oxyde gazeux, à peser le récipient pendant l'affinage pour établir le point où le poids du contenu du récipient change notablement en raison de l'oxydation préférentielle de l'un ou des constituants choisis, à amorcer à ce point une réduction du rapport oxygène/gaz diluant de manière à réduire la vitesse d'oxydation de l'un ou des constituants par rapport à la vitesse d'oxydation de l'impureté et à poursuivre l'injection jusqu'à ce que la proportion de l'impureté soit réduite à la valeur désirée.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB17724/76A GB1559688A (en) | 1976-04-30 | 1976-04-30 | Refining molten metal |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2388889A1 true FR2388889A1 (fr) | 1978-11-24 |
Family
ID=10100118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7713221A Withdrawn FR2388889A1 (fr) | 1976-04-30 | 1977-05-02 | Procede perfectionne d'affinage de metal fondu |
Country Status (11)
Country | Link |
---|---|
US (1) | US4113469A (fr) |
JP (1) | JPS52155118A (fr) |
AU (1) | AU2468477A (fr) |
BE (1) | BE854152A (fr) |
BR (1) | BR7702752A (fr) |
DE (1) | DE2719063A1 (fr) |
ES (1) | ES458269A1 (fr) |
FR (1) | FR2388889A1 (fr) |
GB (1) | GB1559688A (fr) |
IT (1) | IT1072694B (fr) |
SE (1) | SE7704990L (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4529442A (en) * | 1984-04-26 | 1985-07-16 | Allegheny Ludlum Steel Corporation | Method for producing steel in a top oxygen blown vessel |
US4529443A (en) * | 1984-04-26 | 1985-07-16 | Allegheny Ludlum Steel Corporation | System and method for producing steel in a top-blown vessel |
US5405121A (en) * | 1994-04-29 | 1995-04-11 | Centro De Investigation Y De Estudios Avanzados Del Ipn | Apparatus to indicate the oxygen content of molten copper using the vibration signal of a graphite rod immersed into the molten metal |
CA2231717A1 (fr) * | 1998-03-11 | 1999-09-11 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Proced Es Georges Claude | Emploi de melanges gazeux renfermant un gaz inerte et un gaz contenant de l'oxygene pour la desulfuration du cuivre «blister» pendant le raffinement anodique |
US6582491B2 (en) * | 1998-10-30 | 2003-06-24 | Midrex International, B.V. Rotterdam, Zurich Branch | Method for producing molten iron in duplex furnaces |
US8627775B1 (en) | 2010-03-02 | 2014-01-14 | David L. Wilson | Burning apparatus for a solid wood-fueled process heating system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE610265A (fr) * | 1960-11-18 | |||
US3594155A (en) * | 1968-10-30 | 1971-07-20 | Allegheny Ludlum Steel | Method for dynamically controlling decarburization of steel |
US3850617A (en) * | 1970-04-14 | 1974-11-26 | J Umowski | Refining of stainless steel |
US3816720A (en) * | 1971-11-01 | 1974-06-11 | Union Carbide Corp | Process for the decarburization of molten metal |
US3773497A (en) * | 1972-03-02 | 1973-11-20 | Steel Corp | Steelmaking |
US3930843A (en) * | 1974-08-30 | 1976-01-06 | United States Steel Corporation | Method for increasing metallic yield in bottom blown processes |
-
1976
- 1976-04-30 GB GB17724/76A patent/GB1559688A/en not_active Expired
-
1977
- 1977-04-28 DE DE19772719063 patent/DE2719063A1/de active Pending
- 1977-04-28 AU AU24684/77A patent/AU2468477A/en not_active Expired
- 1977-04-28 ES ES458269A patent/ES458269A1/es not_active Expired
- 1977-04-29 BE BE177177A patent/BE854152A/fr unknown
- 1977-04-29 BR BR7702752A patent/BR7702752A/pt unknown
- 1977-04-29 IT IT67961/77A patent/IT1072694B/it active
- 1977-04-29 SE SE7704990A patent/SE7704990L/ not_active Application Discontinuation
- 1977-04-30 JP JP5062677A patent/JPS52155118A/ja active Pending
- 1977-05-02 FR FR7713221A patent/FR2388889A1/fr not_active Withdrawn
- 1977-05-02 US US05/792,602 patent/US4113469A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB1559688A (en) | 1980-01-23 |
BR7702752A (pt) | 1978-01-17 |
SE7704990L (sv) | 1977-10-31 |
IT1072694B (it) | 1985-04-10 |
ES458269A1 (es) | 1978-02-16 |
DE2719063A1 (de) | 1977-11-10 |
BE854152A (fr) | 1977-08-16 |
AU2468477A (en) | 1978-11-02 |
US4113469A (en) | 1978-09-12 |
JPS52155118A (en) | 1977-12-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |