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WO1997044497A1 - Cuve sous pression a conduite reglable pour l'alimentation en matieres coulantes et son application en siderurgie dans un reacteur de reduction de fonte du type cyclonique - Google Patents

Cuve sous pression a conduite reglable pour l'alimentation en matieres coulantes et son application en siderurgie dans un reacteur de reduction de fonte du type cyclonique Download PDF

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Publication number
WO1997044497A1
WO1997044497A1 PCT/NL1997/000293 NL9700293W WO9744497A1 WO 1997044497 A1 WO1997044497 A1 WO 1997044497A1 NL 9700293 W NL9700293 W NL 9700293W WO 9744497 A1 WO9744497 A1 WO 9744497A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure vessel
pipe
accordance
mouth
lance
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.)
Ceased
Application number
PCT/NL1997/000293
Other languages
English (en)
Dutch (nl)
Inventor
Hendrikus Koenraad Albertus Meijer
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.)
Tata Steel Ijmuiden BV
Original Assignee
Hoogovens Staal BV
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 Hoogovens Staal BV filed Critical Hoogovens Staal BV
Priority to AU29154/97A priority Critical patent/AU2915497A/en
Publication of WO1997044497A1 publication Critical patent/WO1997044497A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/16—Introducing a fluid jet or current into the charge
    • 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
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling
    • 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
    • C21C7/0081—Treating and handling under pressure
    • 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
    • C21C5/56—Manufacture of steel by other methods

Definitions

  • the invention addresses the area of supplying a flowable, pourable processing agent such as a gas, fluid or solid substance such as powder to a preferably hot substance present in a pressure vessel. More particularly, yet not exclusively, the invention addresses the area of either fully or partly reducing or prereducing iron oxide or prereduced iron or crude iron in a pressure vessel.
  • the invention will be clarified in the following by reference to the full or partial reduction of iron oxide. To the specialist it will be clear that the invention is also applicable to other fields, whereby a hot substance is exposed under overpressure to a process gas or fluid or solid substance.
  • those iron compounds are normally heated and possibly even smelted in for example a fluidised bed reactor or in a so called smelting cyclone.
  • a fluidized bed reactor When a fluidized bed reactor is used, the prereduced iron compounds are transferred still in solid state into a metallurgical vessel, the so-called smelting reactor. In the smelting reactor the prereduced iron compounds are smelted and then further reduction takes place.
  • the prereduced iron compounds leave the smelting cyclone already in molten state, so that the further reduction can take place in the metallurgical vessel immediately.
  • the object of the invention is to make available arrangements with which a processing agent (such as, in the case of the reduction of iron compounds, virtually pure oxygen or pulverised coal) can be used as effectively as possible for a preferably hot substance to be processed such as a melt of iron compounds, possibly prereduced.
  • a processing agent such as, in the case of the reduction of iron compounds, virtually pure oxygen or pulverised coal
  • Claim 1 an apparatus of the type illustrated in Claim 1 is proposed. This permits the process conditions to be kept as close to optimum as possible while the pressure vessel is operating.
  • the operation of the mouth should be harmonised with the conditions in the pressure vessel in such a way that the pressure vessel is reliably leakage proof during its operation. This is because any loss in pressure and/or substances from the pressure vessel has a disadvantageous effect on the effectiveness of the process.
  • a further object of the invention is to propose arrangements with which the pipe for supplying the processing agent (solid, fluid or gaseous) to the interior of the pressure vessel can be relatively easily removed, for example for repair, preferably in such a way that the operation of the pressure vessel is not interrupted or negligibly.
  • the words "flowable, pourable” are taken to describe a fluid or a gas, but also a solid material having a make-up enabling it to flow, such as pulverised or granular solid material.
  • the invention is illustrated in more detail by reference to the following description and description of the accompanying drawings which illustrate different non-limitative embodiments of the present invention.
  • - Fig. 1 shows schematically a cross-sectional side view of an apparatus for the manufacture of crude iron with a smelting cyclone which is included to illustrate the general operation of such an apparatus;
  • Fig. 2 shows a view corresponding to that of Fig. 1, whereby a modified embodiment is given showing more details of the invention
  • Fig. 3 shows the detail III of Fig. 2 in a cross-sectional side view
  • Fig. 4 shows a view corresponding to that of Fig. 3 of an alternative embodiment variant
  • Fig. 5 shows a view corresponding to that of Fig. 2, partly cut away, of another embodiment variant
  • Fig. 6 shows an alternative for the detail III of Fig. 2, in side view and partly cut away;
  • - Fig. 7 shows a side view corresponding to that of Fig. 3 of yet another variant of the present invention
  • Fig. 8 shows a side view of yet another variant for the embodiment given in Fig. 6;
  • Fig. 9 shows a side view corresponding to that of Fig. 1 of yet another variant of the invention.
  • Iron compounds are introduced into smelting cyclone (1) of Fig. 1 at (2).
  • the iron compounds are prereduced in smelting cyclone (1) and drip along wall (3) of the smelting cyclone (1) into metallurgical vessel (4), for example a converter.
  • metallurgical vessel (4) for example a converter.
  • the iron compounds with oxygen being supplied through opening (6) by means of lance (5 ) and means of reduction, for example coal, are further reduced into iron that is tapped off together with the formed slag through opening (7).
  • a hot gas containing CO (and H2) occurs that is conveyed to smelting cyclone (1) in which, with oxygen being supplied through openings (8 ) , a reaction takes place resulting in the iron compounds being heated to above the smelting temperature and being subjected to a prereduction.
  • the gas is then taken off through opening (9) at the top of smelting cyclone (1).
  • an inert gas such as argon through openings (10) in the bottom of metallurgical vessel (4).
  • Smelting cyclone (1) and metallurgical vessel (4) are shown in direct connection with each other.
  • the processes in the smelting cyclone and metallurgical vessel (4) take place at a pressure increased by 1 to 10 bar relative to the surroundings.
  • the pressure increase relative to the atmospheric ambient pressure is approximately 2 to 5 bar, more particularly approximately 3 bar.
  • the gases in smelting cyclone (1) and metallurgical vessel (4) contain CO2, H2, O2, H2O and CO.
  • Fig. 1 has a single central lance (5) extending downward through smelting cyclone (1) and ending a little distance above the melt (12) in a mouth (13). Lance (5) runs essentially coaxially to the central longitudinal axis of the essentially rotation symmetrical metallurgical vessel (4) and smelting cyclone (1). In the embodiment of Fig. 1 lance (5) is therefore exposed to the processes occurring in smelting cyclone (1).
  • Fig. 2 shows an alternative for arranging the lance (5).
  • lance (5) is arranged obliquely relative to the vertical.
  • lance (5) extends below smelting cyclone (1) via a sealing structure (14) through the side wall of metallurgical vessel (4).
  • lance (5) is coupled to a powered displacement element (15) free to move along a straight rail (16), so that lance (5) is free to move back and forth in its longitudinal direction. Consequently the level of mouth (13) in metallurgical vessel (4) can be harmonised with the prevailing level of melt (12).
  • the level of the melt in metallurgical vessel (4) varies continually or at intervals by a height of for example approximately 1 metre. This is caused for example by tapping off at intervals or essentially continually a part of melt (12) via tap opening (7).
  • the invention therefore proposes to make the level of mouth (13) capable of harmonising with the level of the melt (12) by means of making lance (5) capable of being adjusted in length.
  • Displacement element (15) can also be used to withdraw or introduce a lance (5) out of or into metallurgical vessel (4).
  • the dashed lines in Fig. 3 show how a lance (5) present as spare component outside metallurgical vessel (4) can be kept available in a changeover installation.
  • lance (5) is significantly screened from the processes occurring in smelting cyclone (1), so that there is little risk of for example attack of the surface of that lance by the effect of one or more substances in the vessel.
  • sealing structure (14) as detailed in Fig. 3 can be arranged as shown by dashed lines at the top of Fig. 2 to correspond with the central, essentially vertical lance arrangement of Fig. 1. In this way lance (5) extends through a branch (17) of gas discharge (9).
  • gas discharge (9) runs to for example cooling, filtering and treatment installations in order for example to recoup the gas, or in order for example to supply the still active components from that gas (for example CO) to an installation for further processing, for example current generation.
  • the gas discharge pipe (9) is sealed from the surroundings by suitable sealing elements (not shown) in such a way that the desired overpressure can maintain itself in metallurgical vessel (4) and smelting cyclone (1).
  • Any iron compounds, coal and/or means of reduction and other products necessary for the process are supplied to smelting cyclone (1) and/or metallurgical vessel (4) under a pressure that is at least equal to the pressure prevailing in metallurgical vessel (4) and smelting cyclone (1).
  • Supplying via opening (6) can also be under pressure, but for example suitable locking arrangements (not shown) may also be provided in order to maintain the prevailing pressure in metallurgical vessel (4) and smelting cyclone (1).
  • suitable locking arrangements (not shown) may also be provided in order to maintain the prevailing pressure in metallurgical vessel (4) and smelting cyclone (1).
  • melt (12) is being tapped off via tap opening (7) care is taken to ensure that the level of melt (12) nearly always stays above the top edge of the tap opening so that this guarantees the suitable sealing of metallurgical vessel (4) and smelting cyclone (1) relative to the surroundings.
  • lance (5) in accordance with Fig. 2 yet also others below smelting cyclone (1), or another reactor for pretreating the materials to be supplied to the melt, offer a number of advantages compared to a lance in accordance with Fig. 1, namely it is not necessary to run lance (5) through discharge (9) so that discharge (9) can be placed directly above reactor (1).
  • Lance (5) is run through the wall outside the main flow in vessel (4) and therefore becomes less loaded. Lance (5) can be made shorter and is consequently easier to handle, less heavy and can be changed more quickly. Different lances (5) can extend into vessel (4) at the same time.
  • lance (5) shows in more detail the sealing structure (14) for lance (5) which is free to move back and forth in its longitudinal direction.
  • the part of lance (5) extending outside metallurgical vessel (4) (or branch (17) in Fig. 2) runs in a housing (18) placed on wall (19) of smelting cyclone (1), metallurgical vessel (4) or branch (17) and which, with the exception of supply and/or discharge pipes, is sealed relative to the surroundings and relative to metallurgical vessel (4).
  • lance (5) extends through a seal (2) in the bottom side wall of housing (18).
  • an inert gas for example such as nitrogen gas is used to maintain a slight overpressure relative to the pressure prevailing in metallurgical vessel (4).
  • stub (24) connects to the rest of housing (18) sealed by a bayonet closure (25) or other suitable connection.
  • This stub (24) carries a compensator element (23), for example for compensating differences in temperature expansion.
  • a pneumatically operated slide valve (26) activates in stub (24) in order to guarantee a good seal when lance (5) is fully removed from metallurgical vessel (4) and/or smelting cyclone (1).
  • lance (5) can be removed in its entirety.
  • lance (5) ends within housing (18).
  • a flexible tube runs in space (21) on the one hand opening out at the outer wall of housing (18) and on the other hand opening out in lance (5) and provides the supply to mouth (13 ) .
  • the mechanism for moving lance (5) up and down is then likewise incorporated in space (21).
  • Fig. 4 shows an alternative for reliably adjusting the operation of mouth (13) while maintaining the suitable sealing of the smelting cyclone and metallurgical vessel (4).
  • lance (5) comprises a hollow pipe (28) free to move back and forth in its longitudinal direction.
  • pipe (28) is surrounded by an annular duct (29).
  • Hollow pipe (28) and annular duct (29) both open out at mouth (13) of lance (5).
  • hollow pipe (28) has a thickening (30) and the shape of that thickening (30) as well as the shape of the mouth of duct (29) are harmonised to one another such that by moving hollow pipe (28) up and down it is possible to adjust the injecting angle a and/or the injecting force of a processing substance leaving duct (29) at mouth (13).
  • Fig. 4 also shows couplings (31), for example for water cooling. Further it is also possible for example to supply oxygen via coupling (32) to hollow pipe (28) at a higher pressure and/or delivery compared to the supply of oxygen to duct (29) via coupling (33) or vice versa. It is also possible to conceive regulating the oxygen pressure and/or delivery to coupling points (32) and/or (33) .
  • Fig. 5 shows yet another variant for harmonising the operation of mouth (13) of lance (5).
  • lance (5) is attached to the wall of metallurgical vessel (4), here partly shown, and free to swing essentially in its vertical plane.
  • mouth (13) remains essentially central relative to the central longitudinal axis of metallurgical vessel (4).
  • Mouth (13) is placed obliquely relative to the longitudinal axis of lance (5) so that oxygen is blown in an essentially vertical direction down onto the melt (12).
  • the position of mouth (13) may possibly be made adjustable relative to the longitudinal axis of lance (5) in order to enable the direction of operation of mouth (13) to be selected to depend on the swing position of lance (5).
  • Fig. 6 shows a variant whereby mouth (13) of lance (5) carries along its longitudinal direction blowing openings (34) located at a distance from one another. This enables process substance to flow out at different levels along mouth (13) as seen in the longitudinal direction of lance (5).
  • This lance (5) can work in the two following manners:
  • openings (34) are coupled to primary supply (32).
  • the other openings (34) are coupled to secondary supply (35) in such a way that it should preferably only be ensured that the openings not supplied out of primary supply (32) remain open and do not close up because of encrustations from, for example splashing fluid material from melt (12).
  • openings (34) are located at four levels of mouth (13). In each case the openings at one level are coupled to primary supply (32). The remaining 3 levels are coupled to secondary supply (35). Supplies (32) and (35) are regulable. In this embodiment of Fig. 6 lance (5) does not otherwise need to be movable while the system is operating. This allows its sealed passage through wall (19) to be ensured simply.
  • the bottom openings (34) are coupled to supply (32) for primary oxygen. Openings (34) at the other levels are coupled to supply (35) for secondary oxygen. Instead of secondary oxygen, air can also be supplied via supply (35) to those openings (34). Supply via couplings (32) and ( 35 ) is regulable. With this manner too the operation of the mouth of lance (5) can be harmonised with the level of the melt.
  • Fig. 7 further shows an embodiment whereby lance (5) is adjustable back and forth in its longitudinal direction. Lance (5) is surrounded at a distance by jacket (36). This jacket (36) encloses lance (5) preferably along a length which is at least equal to the length along which the lance is moved up and down during operation. Jacket (36) is sealably and detachably secured to wall (19), for example with the aid of a compliant coupling for taking up for example differences in expansion.
  • a valve (26) (here a pneumatically or hydraulically operated slide valve) can be used to seal wall (19). Beyond wall (19) jacket (36) transfers into a lateral coupling stub (41) for a supply (40) for coal, preferably pulverised coal. Lance (5) projects through sealing structure (14) fitted at the top of jacket (36) as shown in the drawing, which sealing structure (14) bears a close resemblance to the sealing structure (14) shown in Fig. 3. Corresponding numbers indicate components corresponding with Fig. 3. Nitrogen gas is supplied to space (21) of sealing structure (14) in order to prevent pulverised coal from jacket (36) from penetrating space (18) and damaging seal (22).
  • oxygen or air for example may also be supplied to space (21). In that case it is even possible to omit seal (20).
  • the supply of air and oxygen to space (18) must be such that any penetration of pulverised coal from the jacket into space (18) is prevented.
  • a small supply of oxygen mixed with pulverised coal also takes place via jacket (36).
  • the flow through jacket (36) and along the outside of lance (5) ensures that substances from vessel (4) do not go into the jacket and attack the outer wall of lance (5) in the area where they pass through wall (19).
  • the pulverised coal flowing through jacket (36) along the outer wall of lance (5) also has a cleaning and scouring effect on that outer wall.
  • the embodiment in accordance with Fig. 7 has the advantage that for the injection of coal and oxygen the number of passages through wall (19) is kept to a minimum. In addition the dosing of coal and oxygen takes place close together, possibly directly above the slag floating on the melt. Often there are different combinations of jacket (36) and lance (5) extending into vessel (4). Each coal supply then has its own oxygen supply, and for example in the event of malfunction such a combination may be closed off in its entirety and taken out of vessel (4) for replacement or repair.
  • Jacket (36) is then used for allowing secondary air or oxygen flow to the outside along lance (5). Possibly jacket (36) may enclose lance (5) with a little clearance. Jacket (36) may also enclose lance (5) along such a length that lance (5) only projects out of jacket (36) for a length roughly corresponding to its length of travel during operation.
  • the purpose of the air or secondary oxygen is to prevent substances from vessel (4) from penetrating jacket (36) and attacking the outside of lance (5) and/or seals (20) and/or (22).
  • the rate of flow of the air or secondary oxygen from jacket (36) may be set just low enough to counter penetration by those substances.
  • jacket (36) encloses lance (5), the better seals (20) and/or (22) are protected from damage.
  • jacket (36) may be supplied continually but also in a pulsating manner from secondary source (38).
  • a jacket (26) close-fitting around lance (5) it is also possible with a jacket (26) amply surrounding lance (5) to opt for filling the intermediate space with a porous material which has been chosen in accordance with the application.
  • lance (5) is protected along a great part of its length extending into the pressure vessel from the content of the pressure vessel in such a way that one or more substances from the content of the pressure vessel cannot or can only slightly reach the area of the lance in the vicinity of the wall of the pressure vessel.
  • the lance is enclosed by a protective medium such as pulsing gas in an annular gap between lance (5) and enclosing jacket (26).
  • a protective medium such as pulsing gas in an annular gap between lance (5) and enclosing jacket (26).
  • a lance (5) permanently fixed within jacket (36) can also be used, the mouth of which is adjustable in correspondence with for example the embodiments in accordance with Figs. 4 or 6.
  • Another possibility is to equip the lance in accordance with Fig. 5 with a jacket in order to achieve a combined coal/oxygen supply.
  • Fig. 8 offers a further alternative for introducing process substance into vessel (4). This variant is largely based on the embodiment in accordance with Fig 6. At three levels the mouth carries outflow openings (42), (43) and (44).
  • openings (43) and (44) open out in the slag layer (11) while openings (42) open out above it.
  • Coal, preferably pulverised coal is supplied via openings (44).
  • Primary oxygen is supplied via openings (43).
  • Secondary oxygen is supplied via openings (42).
  • Injecting the coal deep in the slag layer causes a low content of FeO to occur, little substance is formed and good combustion of the volatile parts occurs.
  • the lance is for example adjustable in length as described by reference to Figs. 2, 3 or 7.
  • Figure 9 shows schematically an embodiment with different lances (5) for example arranged in a circular pattern.
  • lances (5) including their mouths are kept outside smelting cyclone (1) and its vertical imaginary continuation. Lances (5) are then protected as well as possible from any hot drips coming from smelting cyclone (1).
  • Such lances (5) can also be made corresponding to the above described examples in order to harmonise the operation of mouth (13) with the level of melt (12) in metallurgical vessel (4).
  • the invention is not limited to the embodiments described and shown here.
  • combinations are also possible of one or more components from one or more of the embodiments described and shown here.
  • the invention achieves the effect that the operation of the mouth of the lance while the installation is in operation is capable of being harmonised continually or at intervals, preferably without causing harm to the sealing of the system relative to the surroundings.
  • the smelting cyclone and/or metallurgical vessel (4) it is also not necessary for the smelting cyclone and/or metallurgical vessel (4) to be made rotation symmetrical.
  • smelting cyclone (1) centrally relative to metallurgical vessel (4).
  • embodiments on the basis of combinations of one or more details from one or more of the embodiment variants described and/or shown here belong to the invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

Cuve sous pression pouvant être mise en communication, par l'intermédiaire de conduites d'alimentation et/ou de décharge, avec des systèmes auxiliaires périphériques, cette cuve étant destinée à contenir une substance de préférence coulante et, ce, de préférence à une température d'environ 500 °C au moins. Une conduite raccordée à une source située à l'extérieur de la cuve sous pression débouche dans cette dernière et permet d'amener jusqu'à ladite substance un agent de traitement coulant tel qu'un fluide, un gaz ou une poudre. L'embouchure de cette conduite est réglable pendant le fonctionnement de la cuve sous pression, afin de permettre d'augmenter ou de diminuer selon les besoins la hauteur de décharge de l'embouchure dans la cuve.
PCT/NL1997/000293 1996-05-23 1997-05-23 Cuve sous pression a conduite reglable pour l'alimentation en matieres coulantes et son application en siderurgie dans un reacteur de reduction de fonte du type cyclonique Ceased WO1997044497A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29154/97A AU2915497A (en) 1996-05-23 1997-05-23 Pressure vessel with adjustable conduit for feeding flowable materials and application to ironmaking in cyclone type smelt-reduction reactor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1003186A NL1003186C2 (nl) 1996-05-23 1996-05-23 Drukvat, toepassing van dat drukvat bij de bereiding van ruw ijzer, alsmede leiding geschikt voor toepassing in dat drukvat.
NL1003186 1996-05-23

Publications (1)

Publication Number Publication Date
WO1997044497A1 true WO1997044497A1 (fr) 1997-11-27

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PCT/NL1997/000293 Ceased WO1997044497A1 (fr) 1996-05-23 1997-05-23 Cuve sous pression a conduite reglable pour l'alimentation en matieres coulantes et son application en siderurgie dans un reacteur de reduction de fonte du type cyclonique

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AU (1) AU2915497A (fr)
NL (1) NL1003186C2 (fr)
WO (1) WO1997044497A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009093098A3 (fr) * 2007-12-21 2010-06-10 Gi-Gasification International, Sa Système injecteur pour production de gaz combustible
WO2010136029A3 (fr) * 2009-05-27 2011-07-07 Saar-Metallwerke Gmbh Utilisation d'une buse à compensation de hauteur
EP4450652A1 (fr) * 2023-04-12 2024-10-23 Metix (Proprietary) Limited Four métallurgique avec lance d'injection de carbone

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US3418109A (en) * 1964-01-30 1968-12-24 Kaiser Ind Corp Method for producing steel by an oxygen lance
US4334559A (en) * 1980-06-13 1982-06-15 Deem Larry D Pipe coupling
DE3103730A1 (de) * 1981-02-04 1982-09-02 Fried. Krupp Gmbh, 4300 Essen "verfahren zum nachregeln der arbeitsstellung von einblaslanzen bezueglich eines schnmelzbades und vorrichtung zur durchfuehrung des verfahrens"
DE3225772A1 (de) * 1982-07-09 1984-01-12 Klöckner-Humboldt-Deutz AG, 5000 Köln Blaslanze
DE3721944A1 (de) * 1986-10-27 1988-05-19 Inteco Int Techn Beratung Elektrodenstange fuer anlagen zum umschmelzen selbstverzehrender elektroden in einem geschlossenen gefaess
EP0444006A1 (fr) * 1990-02-02 1991-08-28 Voest-Alpine Industrieanlagenbau Gmbh Dispositif d'installation et de démontage d'une lance dans un récipient métallurgique
DE4210915A1 (de) * 1992-03-30 1993-10-07 Mannesmann Ag Gasdichter Lanzenverschluss an einer Kühlkaminhaube für Stahlkonverter
EP0690136A1 (fr) * 1994-07-01 1996-01-03 Hoogovens Groep B.V. Procédé et appareil pour la fabrication de fer à partir de composés de fer
EP0735146A1 (fr) * 1995-03-29 1996-10-02 Hoogovens Staal B.V. Dispositif pour la fabrication de fonte par réduction directe

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NL8400393A (nl) * 1984-02-08 1985-09-02 Hoogovens Groep Bv Vloeistofgekoelde lans voor het blazen van zuurstof op een staalbad.

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418109A (en) * 1964-01-30 1968-12-24 Kaiser Ind Corp Method for producing steel by an oxygen lance
US4334559A (en) * 1980-06-13 1982-06-15 Deem Larry D Pipe coupling
DE3103730A1 (de) * 1981-02-04 1982-09-02 Fried. Krupp Gmbh, 4300 Essen "verfahren zum nachregeln der arbeitsstellung von einblaslanzen bezueglich eines schnmelzbades und vorrichtung zur durchfuehrung des verfahrens"
DE3225772A1 (de) * 1982-07-09 1984-01-12 Klöckner-Humboldt-Deutz AG, 5000 Köln Blaslanze
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EP0690136A1 (fr) * 1994-07-01 1996-01-03 Hoogovens Groep B.V. Procédé et appareil pour la fabrication de fer à partir de composés de fer
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009093098A3 (fr) * 2007-12-21 2010-06-10 Gi-Gasification International, Sa Système injecteur pour production de gaz combustible
WO2009081282A3 (fr) * 2007-12-21 2010-06-10 Gi-Gasification International, Sa Procédé permettant d'utiliser un système injecteur pour produire un gaz combustible
WO2010136029A3 (fr) * 2009-05-27 2011-07-07 Saar-Metallwerke Gmbh Utilisation d'une buse à compensation de hauteur
EP4450652A1 (fr) * 2023-04-12 2024-10-23 Metix (Proprietary) Limited Four métallurgique avec lance d'injection de carbone
NL2034558B1 (en) * 2023-04-12 2024-10-24 Metix Pty Limited Metallurgical furnace with carbon injecting lance

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AU2915497A (en) 1997-12-09

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