FR2190923A1 - Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance - Google Patents
Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistanceInfo
- Publication number
- FR2190923A1 FR2190923A1 FR7224078A FR7224078A FR2190923A1 FR 2190923 A1 FR2190923 A1 FR 2190923A1 FR 7224078 A FR7224078 A FR 7224078A FR 7224078 A FR7224078 A FR 7224078A FR 2190923 A1 FR2190923 A1 FR 2190923A1
- Authority
- FR
- France
- Prior art keywords
- particles
- suspen
- lances
- sion
- contracted
- 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.)
- Granted
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
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2214/00—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/00006—Liquid fuel burners using pure oxygen or O2-enriched air as oxidant
Abstract
Lance comprises a first tube (I) for blowing O2 contg particles in suspension, a second tube (II) disposed concentrically to form an annular space for blowing a contraction gas between the external wall of (I) and the internal wall of (II). The space communicates with the interior of (I) in the area of the tip through a slot between one end of a tubular element extending (I) and a seating attached to (II). (I) is constituted by a metallic tubular envelope inside which is disposed an abrasion resistant ceramic material tube of the same internal dia. as the tubular element which extends (I) and extending over at least the lower third of the envelope.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7224078A FR2190923A1 (en) | 1972-07-04 | 1972-07-04 | Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7224078A FR2190923A1 (en) | 1972-07-04 | 1972-07-04 | Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2190923A1 true FR2190923A1 (en) | 1974-02-01 |
FR2190923B1 FR2190923B1 (en) | 1976-08-06 |
Family
ID=9101292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7224078A Granted FR2190923A1 (en) | 1972-07-04 | 1972-07-04 | Contracted double flow lances - for blowing oxygen with particles in suspen-sion and having improved abrasion resistance |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2190923A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2432552A1 (en) * | 1978-08-03 | 1980-02-29 | Siderurgie Fse Inst Rech | Immersion lance consisting of two concentric tubes - esp. for injecting powder into molten iron or steel and using two tubes with the same outlet bore dia. |
FR2644558A1 (en) * | 1989-03-16 | 1990-09-21 | Air Liquide | Arc furnace equipped with fuel oil/oxygen burners and fuel oil/oxygen burner |
EP0481955A2 (en) * | 1990-10-15 | 1992-04-22 | Deutsche Voest-Alpine Industrieanlagenbau Gmbh | Burner for the combustion of solid fuels of fine-grained to powdery consistency |
WO1996038690A1 (en) * | 1995-06-01 | 1996-12-05 | Voest-Alpine Industrieanlagenbau Gmbh | Burner |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1211977A (en) * | 1958-01-13 | 1960-03-21 | Arbed | Device for insuffiation of solids in a metal bath |
FR1441304A (en) * | 1965-07-28 | 1966-06-03 | Beteiligungs & Patentverw Gmbh | Method of operating an oxygen blowing lance with several orifices, and oxygen blowing lance with several orifices for the implementation of this method |
-
1972
- 1972-07-04 FR FR7224078A patent/FR2190923A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1211977A (en) * | 1958-01-13 | 1960-03-21 | Arbed | Device for insuffiation of solids in a metal bath |
FR1441304A (en) * | 1965-07-28 | 1966-06-03 | Beteiligungs & Patentverw Gmbh | Method of operating an oxygen blowing lance with several orifices, and oxygen blowing lance with several orifices for the implementation of this method |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2432552A1 (en) * | 1978-08-03 | 1980-02-29 | Siderurgie Fse Inst Rech | Immersion lance consisting of two concentric tubes - esp. for injecting powder into molten iron or steel and using two tubes with the same outlet bore dia. |
FR2644558A1 (en) * | 1989-03-16 | 1990-09-21 | Air Liquide | Arc furnace equipped with fuel oil/oxygen burners and fuel oil/oxygen burner |
EP0481955A2 (en) * | 1990-10-15 | 1992-04-22 | Deutsche Voest-Alpine Industrieanlagenbau Gmbh | Burner for the combustion of solid fuels of fine-grained to powdery consistency |
EP0481955A3 (en) * | 1990-10-15 | 1992-11-19 | Deutsche Voest-Alpine Industrieanlagenbau Gmbh | Burner for the combustion of solid fuels of fine-grained to powdery consistency |
WO1996038690A1 (en) * | 1995-06-01 | 1996-12-05 | Voest-Alpine Industrieanlagenbau Gmbh | Burner |
Also Published As
Publication number | Publication date |
---|---|
FR2190923B1 (en) | 1976-08-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |