EP0109916A1 - Vorrichtung zum Beliefern eines zu frischenden Metallbades mit gasförmigen und festen Stoffen - Google Patents

Vorrichtung zum Beliefern eines zu frischenden Metallbades mit gasförmigen und festen Stoffen Download PDF

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Publication number
EP0109916A1
EP0109916A1 EP83630174A EP83630174A EP0109916A1 EP 0109916 A1 EP0109916 A1 EP 0109916A1 EP 83630174 A EP83630174 A EP 83630174A EP 83630174 A EP83630174 A EP 83630174A EP 0109916 A1 EP0109916 A1 EP 0109916A1
Authority
EP
European Patent Office
Prior art keywords
nozzles
block
cap
resp
tube
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
Application number
EP83630174A
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English (en)
French (fr)
Other versions
EP0109916B1 (de
Inventor
Robert Mercatoris
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mecanarbed Dommeldange Sa Rl
MECANARBED Sarl
Original Assignee
Mecanarbed Dommeldange Sa Rl
MECANARBED Sarl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mecanarbed Dommeldange Sa Rl, MECANARBED Sarl filed Critical Mecanarbed Dommeldange Sa Rl
Priority to AT83630174T priority Critical patent/ATE29266T1/de
Publication of EP0109916A1 publication Critical patent/EP0109916A1/de
Application granted granted Critical
Publication of EP0109916B1 publication Critical patent/EP0109916B1/de
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a device for supplying gaseous and solid materials, in particular oxygen and carbonaceous materials, to a metal bath in the process of refining by top blowing.
  • the applicant has given himself the task of developing a device intended to deliver in the context of a refining process by blowing oxygen from above, on the one hand of oxygen and on the other hand a carbonaceous material.
  • the supply of oxygen to the bath must comprise on the one hand a quantity of refining oxygen, penetrating into the metal in order to meet carbon there and to form carbon monoxide gas and on the other hand an amount of oxygen distributed over the surface of the bath in order to burn the said carbon monoxide, formed during the refining.
  • the aim is to recarburize the bath in order to have an increased energy capacity, the energy released by the oxidation of carbon in the resp resp. carbon monoxide above its surface, being ultimately intended to melt large quantities of solid scrap into the bath.
  • a reliable cooling circuit must also be provided in the device while considering the need to limit the scope of this circuit to a minimum, both from the point of view of space and of the quantities of cooling fluid to be used, given that in the event of a fluid leakage, the latter should only reach the crucible in quantities reduced to a strict minimum.
  • the device as complex as its functions, should be accessible to a simple and at least relatively inexpensive manufacturing method.
  • a device which meets the criteria set out above is the device according to the invention which is a blowing lance whose head is provided with nozzles and which is characterized in that the head consists on the one hand of a monolithic block which has on its underside resp. lateral of the tubular end pieces which constitute the extensions of the nozzles and on the other hand of a cap which has perforations the size and location of which correspond to those of the nozzles, the said cap enveloping the said block and being connected to the latter by the said tips.
  • a passage in which can circulate a cooling fluid there is between the cap and the side and bottom faces of the block a passage in which can circulate a cooling fluid.
  • the block and the cap are provided with a central perforation, the diameter of the perforation of the block being greater than that of the cap.
  • a central tube is housed according to the invention, through which it is possible to transport either gas alone or solid matter suspended in a carrier gas and there will automatically be a conduit enveloping the said central tube, which leads to the passage between the block and the cap. Thanks to this particularity, a device is obtained capable of conveying a given material, possibly not compatible with other materials which are conveyed through the same device, and where the materials are protected against each other by a protective screen. which consists of a fluid which acts at the same time as a cooling fluid.
  • the block has on its upper face circular end pieces, concentric with respect to the vertical axis of the lance head. These end pieces are arranged so as to delimit annular passages in which the nozzles end, so that it suffices to connect the end pieces to concentric tubes to obtain a device having several circuits independent of each other.
  • cap is also connected to a tube which forms the casing of the body of the lance.
  • the main advantage of the device according to the invention lies in the fact that it offers the possibility of conveying and cutting at the same time materials which are not compatible with each other and that the means of protection provided for avoiding physical contact between these materials - in this case carbon and oxygen - at the same time fulfills the function of cooling agent.
  • the head essentially consists of the block, the cap and several tubes, therefore of easily achievable elements.
  • the block (1) has a central perforation (10), in the direction of the vertical axis, which is intended to receive the conduit for solid materials and at the same time to form the conduit for supplying the cooling and protective fluid. .
  • nozzles (20, 21 and 22) which can be used for blowing oxygen.
  • the nozzle (20) which is only slightly inclined relative to the vertical axis can convey the refining oxygen, while the oblique nozzles (21,22) bring the oxygen for post-combustion which must not not enter the bath.
  • Fig.l shows that the block (1) has on its upper face the circular, concentric tips (5,6,7,8) and it becomes clear that these tips define conduits.
  • the end piece (5) forms the central passage (10); at the same time it forms together with the end piece (6) a tubular conduit delimiting the space in which the nozzle ends (20), the end pieces (6 and 7) delimit another tubular conduit in which ends the nozzle (21) and finally it is the same for the tips (7 and 8) with respect to the nozzle (22).
  • the various tubular conduits can constitute the bases common to several nozzles of the same type; so we can predict p. ex. 3 nozzles (20), 3 nozzles (21) and 6 nozzles (22).
  • Fig.2 shows the cap (2) which is provided with a neck (3).
  • This neck is intended to serve as a support for the central tube which will convey the solid material. It can be connected to the cap or be an integral part thereof.
  • the cap has the perforations (10c, 20c, 21c and 22c) which correspond to the nozzles (10, 20, 21, and 22) of the block according to fig. 1. These perforations can also be made after assembly.
  • the main advantage of the invention appears in fig.3 where it is shown the entire lance head. Indeed, there is the tube (4) connected to the neck (3) of the cap (2); this tube (4) can transport carbon suspended in an appropriate carrier gas.
  • the different end pieces which are arranged on the upper surface of the block (1) are connected to concentric tubes (5a, 6a, 7a, and 8a).
  • the passage between the tube (5a) resp. the end piece (5) and the tube (4) can be used according to the invention as an inlet conduit for a cooling and protective fluid.
  • the passages between the tubes (5a and 6a) resp. (6a and 7a) resp. (7a and 8a) lead to the nozzles (20) resp. (21) resp. (22).
  • the device according to the invention can, thanks to its particular design, be manufactured according to conventional and relatively inexpensive methods.
  • the block (1) lends itself to manufacture by mold casting; the perforations can easily be obtained by drilling.
  • the formation of the lower ends can be provided in the arrangement of the mold, as well as that of the nozzles.
  • the upper, concentric ends they can be obtained by turning and milling.
  • the block (1) is usefully made of copper, just like the cap (2).
  • the block and the cap can also form a monolithic unit, relatively easy to produce by casting in a mold. Either we prefer this form of execution or the execution where the block and the cap form individual parts, it is easy to recover the block part in case of damage to the cap part.
  • the tube (4) can be connected to the neck (3) by screwing or by any other sealed assembly means; it is useful to provide an O-ring, not shown, between the top of the neck (3) and the adjacent part of the tube (4).
  • the lance protection / cooling circuit is a closed circuit which comprises, between the inlet conduit in the lance and the outlet conduit, outside the lance body, a pump, a heat exchanger , a buffer tank as well as means for continuous measurement of the pressure and the inlet-outlet flow rates of the fluid conveyed in said circuit.
  • the measuring instruments are connected to an alert system so that a loss of pressure, or a difference between the inlet-outlet flows indicative of any deterioration in the circuit, can be directly signaled for intervention. adequate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP83630174A 1982-10-22 1983-10-20 Vorrichtung zum Beliefern eines zu frischenden Metallbades mit gasförmigen und festen Stoffen Expired EP0109916B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83630174T ATE29266T1 (de) 1982-10-22 1983-10-20 Vorrichtung zum beliefern eines zu frischenden metallbades mit gasfoermigen und festen stoffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84433 1982-10-22
LU84433A LU84433A1 (fr) 1982-10-22 1982-10-22 Dispositif pour fournir des matieres gazeuses et solides a un bain de metal en voie d'affinage

Publications (2)

Publication Number Publication Date
EP0109916A1 true EP0109916A1 (de) 1984-05-30
EP0109916B1 EP0109916B1 (de) 1987-09-02

Family

ID=19729968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83630174A Expired EP0109916B1 (de) 1982-10-22 1983-10-20 Vorrichtung zum Beliefern eines zu frischenden Metallbades mit gasförmigen und festen Stoffen

Country Status (7)

Country Link
US (1) US4533124A (de)
EP (1) EP0109916B1 (de)
JP (1) JPS59133336A (de)
AT (1) ATE29266T1 (de)
CA (1) CA1214635A (de)
DE (1) DE3373315D1 (de)
LU (1) LU84433A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165198A2 (de) * 1984-05-15 1985-12-18 Arbed S.A. Lanze zur Beschleunigung fester Teilchen
EP0234388A2 (de) * 1986-02-25 1987-09-02 Arbed S.A. Sauerstoff-Blaslanze
AT407259B (de) * 1999-02-22 2001-02-26 Voest Alpine Ind Anlagen Verfahren zum einbringen von hüttenwerksstäuben in einen konverter
AT407398B (de) * 1998-08-28 2001-02-26 Voest Alpine Ind Anlagen Verfahren zum herstellen einer metallschmelze
AT407257B (de) * 1999-02-15 2001-02-26 Voest Alpine Ind Anlagen Verfahren zum herstellen einer metallschmelze

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0543088Y2 (de) * 1987-04-24 1993-10-29
US5366537A (en) * 1993-01-05 1994-11-22 Steel Technology Corporation Fuel and oxygen addition for metal smelting or refining process
US5377960A (en) * 1993-03-01 1995-01-03 Berry Metal Company Oxygen/carbon blowing lance assembly
US5865876A (en) * 1995-06-07 1999-02-02 Ltv Steel Company, Inc. Multipurpose lance
US5681526A (en) * 1996-04-23 1997-10-28 Usx Corporation Method and apparatus for post-combustion of gases during the refining of molten metal
US5830259A (en) * 1996-06-25 1998-11-03 Ltv Steel Company, Inc. Preventing skull accumulation on a steelmaking lance
DE19637246A1 (de) * 1996-08-02 1998-02-05 Michael Henrich Schmelzofen insbesondere für Metalle mit zumindest einer in seinen Ofenraum einragenden Lanze, Lanze dafür sowie Verfahren zu deren Steuerung
US5885323A (en) * 1997-04-25 1999-03-23 Ltv Steel Company, Inc. Foamy slag process using multi-circuit lance
US6217824B1 (en) 1999-05-20 2001-04-17 Berry Metal Company Combined forged and cast lance tip assembly
US7167796B2 (en) 2000-03-09 2007-01-23 Donnelly Corporation Vehicle navigation system for use with a telematics system
US7370983B2 (en) 2000-03-02 2008-05-13 Donnelly Corporation Interior mirror assembly with display
AUPQ783100A0 (en) * 2000-05-30 2000-06-22 Technological Resources Pty Limited Apparatus for injecting solid particulate material into a vessel
US7720580B2 (en) 2004-12-23 2010-05-18 Donnelly Corporation Object detection system for vehicle
US7402274B2 (en) * 2005-12-07 2008-07-22 Berry Metal Company Metal making lance slag detection system
US8017898B2 (en) 2007-08-17 2011-09-13 Magna Electronics Inc. Vehicular imaging system in an automatic headlamp control system
US20100020170A1 (en) 2008-07-24 2010-01-28 Higgins-Luthman Michael J Vehicle Imaging System
US20170356689A1 (en) * 2016-05-31 2017-12-14 Refractory Service Corp. Lance assembly

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT231485B (de) * 1960-05-27 1964-01-27 Oesterr Alpine Montan Verfahren zum Einbringen von festen Zusatzstoffen in ein Reaktionsgefäß, in welchem Eisenbäder mittels eines Sauerstoffstrahls gefrischt werden
FR1595196A (de) * 1968-12-17 1970-06-08
FR2056865A5 (de) * 1969-08-14 1971-05-14 Voest Ag
DE1925045B2 (de) * 1968-06-20 1973-05-10 Combinatul Siderurgic Hunedoara, Hunedoara (Rumänien) Wassergekuehlte blaslanze
US3744780A (en) * 1972-01-07 1973-07-10 Applied Techn Corp Method of treating molten material by use of a lance
LU78906A1 (fr) * 1978-01-19 1979-09-06 Arbed Procede et dispositif pour l'affinage d'un bain de metal
GB2085562A (en) * 1980-10-13 1982-04-28 Arbed Oxygen lance for iron refining
BE893659A (fr) * 1982-06-25 1982-10-18 Centre Rech Metallurgique Procede et dispositif pour l'elaboration d'acier dans un convertisseur

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829960A (en) * 1954-01-18 1958-04-08 Henry J Kaiser Company Method and metallurgical device for the refining of steel
US3121457A (en) * 1956-12-11 1964-02-18 Lummus Co Burner assembly for synthesis gas generators
US3020201A (en) * 1958-11-28 1962-02-06 Abbott Lab 1-arginine-1-glutamate intravenous therapy of hepatic coma ammonia intoxication
US3240481A (en) * 1961-07-27 1966-03-15 United States Steel Corp Apparatus for adding solids and oxygen to an open hearth furnace
BE756083A (fr) * 1969-09-11 1971-03-15 Enya Ryosuke Procede et dispositif pour la fabrication de metal en fusion destine a etre coule
US3730505A (en) * 1970-07-01 1973-05-01 Centro Speriment Metallurg Double delivery lance for refining the steel in the converter processes
US3706520A (en) * 1970-08-28 1972-12-19 Shell Oil Co Apparatus and method for heating shaft furnaces with fuel gas
US3697058A (en) * 1971-02-02 1972-10-10 G Sojuzny I Proektirovanijuagr Oxygen toyere of a steel-melting mill
US3752402A (en) * 1971-04-19 1973-08-14 H Marioneaux Fluid injection lance and nozzle means therefor
SU612963A1 (ru) * 1976-07-19 1978-06-30 Череповецкий Ордена Ленина Металлургический Завод Имени 50-Летия Ссср Фурма дл продувки жидкого металла
DE2855499C2 (de) * 1978-12-22 1985-04-18 Klöckner-Humboldt-Deutz AG, 5000 Köln Aufblaslanze
US4301969A (en) * 1980-02-25 1981-11-24 Sharp Kenneth C Oxygen lance nozzle
SU899661A1 (ru) * 1980-05-05 1982-01-23 Уральский ордена Трудового Красного Знамени политехнический институт им.С.М.Кирова Газо-кислородна фурма дл продувки расплавов
US4417721A (en) * 1982-06-04 1983-11-29 Pehlke Robert D Lance tip for oxygen steelmaking

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT231485B (de) * 1960-05-27 1964-01-27 Oesterr Alpine Montan Verfahren zum Einbringen von festen Zusatzstoffen in ein Reaktionsgefäß, in welchem Eisenbäder mittels eines Sauerstoffstrahls gefrischt werden
DE1925045B2 (de) * 1968-06-20 1973-05-10 Combinatul Siderurgic Hunedoara, Hunedoara (Rumänien) Wassergekuehlte blaslanze
FR1595196A (de) * 1968-12-17 1970-06-08
FR2056865A5 (de) * 1969-08-14 1971-05-14 Voest Ag
US3744780A (en) * 1972-01-07 1973-07-10 Applied Techn Corp Method of treating molten material by use of a lance
LU78906A1 (fr) * 1978-01-19 1979-09-06 Arbed Procede et dispositif pour l'affinage d'un bain de metal
GB2085562A (en) * 1980-10-13 1982-04-28 Arbed Oxygen lance for iron refining
BE893659A (fr) * 1982-06-25 1982-10-18 Centre Rech Metallurgique Procede et dispositif pour l'elaboration d'acier dans un convertisseur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0165198A2 (de) * 1984-05-15 1985-12-18 Arbed S.A. Lanze zur Beschleunigung fester Teilchen
EP0165198A3 (en) * 1984-05-15 1987-03-18 Arbed S.A. Lance for accelerating solid particles
EP0234388A2 (de) * 1986-02-25 1987-09-02 Arbed S.A. Sauerstoff-Blaslanze
EP0234388A3 (en) * 1986-02-25 1989-04-19 Arbed S.A. Lance for blowing oxygen
AT407398B (de) * 1998-08-28 2001-02-26 Voest Alpine Ind Anlagen Verfahren zum herstellen einer metallschmelze
AT407257B (de) * 1999-02-15 2001-02-26 Voest Alpine Ind Anlagen Verfahren zum herstellen einer metallschmelze
AT407259B (de) * 1999-02-22 2001-02-26 Voest Alpine Ind Anlagen Verfahren zum einbringen von hüttenwerksstäuben in einen konverter

Also Published As

Publication number Publication date
LU84433A1 (fr) 1984-05-10
ATE29266T1 (de) 1987-09-15
JPS59133336A (ja) 1984-07-31
US4533124A (en) 1985-08-06
CA1214635A (fr) 1986-12-02
DE3373315D1 (en) 1987-10-08
EP0109916B1 (de) 1987-09-02

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