WO1994020642A1 - Procede d'obtention de metal au haut-fourneau ou au cubilot - Google Patents
Procede d'obtention de metal au haut-fourneau ou au cubilot Download PDFInfo
- Publication number
- WO1994020642A1 WO1994020642A1 PCT/FR1994/000223 FR9400223W WO9420642A1 WO 1994020642 A1 WO1994020642 A1 WO 1994020642A1 FR 9400223 W FR9400223 W FR 9400223W WO 9420642 A1 WO9420642 A1 WO 9420642A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blast furnace
- cavity
- oxygen
- liquid oxygen
- nozzle
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B11/00—Making pig-iron other than in blast furnaces
- C21B11/02—Making pig-iron other than in blast furnaces in low shaft furnaces or shaft furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/16—Arrangements of tuyeres
Definitions
- the present invention relates to a method for injecting oxygen into a blast furnace or cupola.
- blast furnace or cupola an apparatus comprising a roughly cylindrical enclosure with a vertical axis into which metal ore and coke are introduced from the top, or “gueulard", the term ore designating here any material capable of supply, by reduction, of metal and coke, and, towards the lower part of the enclosure, a gas containing oxygen is introduced, such as hot air, which, by reacting with the coke, raises the temperature of the falling mass, until reduction of the ore and formation of liquid metal which collects at the bottom of the enclosure.
- a gas containing oxygen such as hot air
- the oxygen-containing gas is introduced through the nozzle with a relatively high speed, this results in the mass of ore and coke, the formation of a cavity whose axis, parallel to that of the nozzle in the vicinity of it then curves upwards.
- Conflicting information has been published on the more or less dense presence of pieces of coke in the cavity. It seems that they are there in small quantities, and that they are constantly agitated by gas currents.
- the invention provides a process for obtaining metal in the blast furnace, or cupola, according to which ore and coke are introduced into the blast furnace or cupola and a gas containing oxygen. is injected, with charcoal, towards the lower part of the blast furnace by nozzles opening out inside the enclosure thereof, this process having the particularity that at least part of the oxygen is injected by the nozzle in the form of a high speed liquid oxygen jet.
- This liquid oxygen is supercharged using a booster pump 18, then passes through a supercooler 19, which brings its temperature about 10 "C below its boiling point under normal conditions.
- the conduits 20 for the transfer of liquid oxygen are, of course, suitably thermally insulated.
- the jet of liquid oxygen leaving the injector 16 is shown schematically at 21. As shown in the figure , the high initial speed of the jet 21 makes it keep its cohesion up to the vicinity of the opposite wall of the cavity 9.
- the outer shape 22 of the cavity 9 is shown in broken lines in the absence of injection of liquid oxygen, while the curve 23, in thicker dashes, represents the shape of the same cavity under the effect of the projection of liquid oxygen.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture Of Iron (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/325,449 US5522916A (en) | 1993-03-03 | 1994-02-28 | Method and apparatus for injecting liquid oxygen |
EP94908386A EP0639231A1 (fr) | 1993-03-03 | 1994-02-28 | Procede d'obtention de metal au haut-fourneau ou au cubilot |
JP6519653A JPH07506628A (ja) | 1993-03-03 | 1994-02-28 | 高炉又はキューポラで金属を得る方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9302451A FR2702221B1 (fr) | 1993-03-03 | 1993-03-03 | Procédé d'obtention de métal au haut-fourneau ou au cubilot. |
FR93/02451 | 1993-03-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994020642A1 true WO1994020642A1 (fr) | 1994-09-15 |
Family
ID=9444611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1994/000223 WO1994020642A1 (fr) | 1993-03-03 | 1994-02-28 | Procede d'obtention de metal au haut-fourneau ou au cubilot |
Country Status (6)
Country | Link |
---|---|
US (1) | US5522916A (fr) |
EP (1) | EP0639231A1 (fr) |
JP (1) | JPH07506628A (fr) |
CN (1) | CN1103536A (fr) |
FR (1) | FR2702221B1 (fr) |
WO (1) | WO1994020642A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998021536A2 (fr) * | 1996-11-13 | 1998-05-22 | Messer Griesheim Gmbh | Procede et dispositif permettant de faire fonctionner un four a cuve |
EP1930678A3 (fr) * | 2006-12-11 | 2008-12-31 | Mines and Metals Engineering (M.M.E.) | Four à cuve |
AU2004201935B2 (en) * | 2003-05-14 | 2009-12-17 | Sms Demag S.P.A. | Metallurgical reactor for the production of cast iron |
DE102011015317A1 (de) * | 2011-03-28 | 2012-10-04 | Air Liquide Deutschland Gmbh | Verfahren und Vorrichtung zum Betreiben eines Ofens |
EP2733223A4 (fr) * | 2011-07-15 | 2015-09-02 | Jfe Steel Corp | Procédé de fonctionnement d'un haut-fourneau |
EP2733224A4 (fr) * | 2011-07-15 | 2015-10-21 | Jfe Steel Corp | Procédé de fonctionnement d'un haut-fourneau |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1044165C (zh) * | 1996-10-24 | 1999-07-14 | 王中 | 按键开关 |
GB9705584D0 (en) * | 1997-03-18 | 1997-05-07 | Boc Group Plc | Operation of rotary kilns |
US5858059A (en) * | 1997-03-24 | 1999-01-12 | Molten Metal Technology, Inc. | Method for injecting feed streams into a molten bath |
US6090182A (en) * | 1997-10-29 | 2000-07-18 | Praxair Technology, Inc. | Hot oxygen blast furnace injection system |
US6206949B1 (en) | 1997-10-29 | 2001-03-27 | Praxair Technology, Inc. | NOx reduction using coal based reburning |
DE10060727A1 (de) * | 2000-12-07 | 2002-06-27 | Messer Griesheim Gmbh | Positioniereinrichtung für Brennstoff/Sauerstoff-Lanzen |
EP1939305A1 (fr) * | 2006-12-29 | 2008-07-02 | L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Procédé de production de fonte dans un haut fourneau |
KR100948927B1 (ko) * | 2007-08-29 | 2010-03-23 | 주식회사 포스코 | 용철 제조용 풍구 및 이를 이용한 가스 취입 방법 |
KR101318385B1 (ko) * | 2011-11-17 | 2013-10-15 | 주식회사 포스코 | 고로의 연소대 미연소 퇴적층 제거 장치 및 제거 방법 |
RU2674374C2 (ru) * | 2013-08-28 | 2018-12-07 | ДжФЕ СТИЛ КОРПОРЕЙШН | Способ работы доменной печи |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR858847A (fr) * | 1939-08-08 | 1940-12-04 | Thyssen Huette Ag | Procédé et dispositif pour augmenter le rendement des fours à cuve en particulier des hauts-fourneaux |
FR2070864A1 (en) * | 1969-12-15 | 1971-09-17 | Jones & Laughlin Steel Corp | Blast furnace - injection of oxidising gas independently - of the blast to improve prodn |
EP0056644A2 (fr) * | 1981-01-21 | 1982-07-28 | Union Carbide Corporation | Injection supersonique d'oxygène dans des fours à cuve |
EP0390766A1 (fr) * | 1989-03-28 | 1990-10-03 | CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif | Procédé pour injecter un combustible auxiliaire dans un haut fourneau |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3701517A (en) * | 1966-12-16 | 1972-10-31 | Airco Inc | Oxy-fuel burners in furnace tuyeres |
FR2677667A1 (fr) * | 1991-06-12 | 1992-12-18 | Grenier Maurice | Procede d'alimentation d'un haut-fourneau en air enrichi en oxygene, et installation de reduction de minerai de fer correspondante. |
-
1993
- 1993-03-03 FR FR9302451A patent/FR2702221B1/fr not_active Expired - Fee Related
-
1994
- 1994-02-28 US US08/325,449 patent/US5522916A/en not_active Expired - Fee Related
- 1994-02-28 JP JP6519653A patent/JPH07506628A/ja active Pending
- 1994-02-28 EP EP94908386A patent/EP0639231A1/fr not_active Ceased
- 1994-02-28 CN CN94190102A patent/CN1103536A/zh active Pending
- 1994-02-28 WO PCT/FR1994/000223 patent/WO1994020642A1/fr not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR858847A (fr) * | 1939-08-08 | 1940-12-04 | Thyssen Huette Ag | Procédé et dispositif pour augmenter le rendement des fours à cuve en particulier des hauts-fourneaux |
FR2070864A1 (en) * | 1969-12-15 | 1971-09-17 | Jones & Laughlin Steel Corp | Blast furnace - injection of oxidising gas independently - of the blast to improve prodn |
EP0056644A2 (fr) * | 1981-01-21 | 1982-07-28 | Union Carbide Corporation | Injection supersonique d'oxygène dans des fours à cuve |
EP0390766A1 (fr) * | 1989-03-28 | 1990-10-03 | CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif | Procédé pour injecter un combustible auxiliaire dans un haut fourneau |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998021536A2 (fr) * | 1996-11-13 | 1998-05-22 | Messer Griesheim Gmbh | Procede et dispositif permettant de faire fonctionner un four a cuve |
WO1998021536A3 (fr) * | 1996-11-13 | 1998-10-29 | Messer Griesheim Gmbh | Procede et dispositif permettant de faire fonctionner un four a cuve |
AU2004201935B2 (en) * | 2003-05-14 | 2009-12-17 | Sms Demag S.P.A. | Metallurgical reactor for the production of cast iron |
EP1930678A3 (fr) * | 2006-12-11 | 2008-12-31 | Mines and Metals Engineering (M.M.E.) | Four à cuve |
EP1930448A3 (fr) * | 2006-12-11 | 2008-12-31 | Mines and Metals Engineering (M.M.E.) | Four à cuve |
DE102011015317A1 (de) * | 2011-03-28 | 2012-10-04 | Air Liquide Deutschland Gmbh | Verfahren und Vorrichtung zum Betreiben eines Ofens |
EP2733223A4 (fr) * | 2011-07-15 | 2015-09-02 | Jfe Steel Corp | Procédé de fonctionnement d'un haut-fourneau |
EP2733224A4 (fr) * | 2011-07-15 | 2015-10-21 | Jfe Steel Corp | Procédé de fonctionnement d'un haut-fourneau |
US9410218B2 (en) | 2011-07-15 | 2016-08-09 | Jfe Steel Corporation | Method for operating a blast furnace |
US9650689B2 (en) | 2011-07-15 | 2017-05-16 | Jfe Steel Corporation | Method for operating a blast furnace |
Also Published As
Publication number | Publication date |
---|---|
FR2702221B1 (fr) | 1995-04-28 |
FR2702221A1 (fr) | 1994-09-09 |
CN1103536A (zh) | 1995-06-07 |
US5522916A (en) | 1996-06-04 |
JPH07506628A (ja) | 1995-07-20 |
EP0639231A1 (fr) | 1995-02-22 |
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