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WO2006096125A1 - Procede d'alimentation en matieres premieres - Google Patents

Procede d'alimentation en matieres premieres Download PDF

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Publication number
WO2006096125A1
WO2006096125A1 PCT/SE2006/000308 SE2006000308W WO2006096125A1 WO 2006096125 A1 WO2006096125 A1 WO 2006096125A1 SE 2006000308 W SE2006000308 W SE 2006000308W WO 2006096125 A1 WO2006096125 A1 WO 2006096125A1
Authority
WO
WIPO (PCT)
Prior art keywords
burner
flame
raw materials
fine
fines
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/SE2006/000308
Other languages
English (en)
Inventor
Joachim VON SCHÉELE
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Priority to FI20070689A priority Critical patent/FI20070689L/fi
Priority to DE200611000570 priority patent/DE112006000570T5/de
Publication of WO2006096125A1 publication Critical patent/WO2006096125A1/fr
Priority to SE0701987A priority patent/SE0701987L/xx
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
    • 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
    • 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
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001—Dry processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/18—Arrangements of devices for charging
    • 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/20—Arrangements of heating devices
    • F27B3/205—Burners
    • 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
    • F27D3/18—Charging particulate material using a fluid carrier
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5264—Manufacture of alloyed steels including ferro-alloys
    • 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 specially adapted for furnaces of these types
    • F27B1/20—Arrangements of devices for charging
    • 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
    • F27D2003/162—Introducing a fluid jet or current into the charge the fluid being an oxidant or a fuel
    • F27D2003/165—Introducing a fluid jet or current into the charge the fluid being an oxidant or a fuel the fluid being a fuel
    • 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
    • F27D2003/168—Introducing a fluid jet or current into the charge through a lance
    • F27D2003/169—Construction of the lance, e.g. lances for injecting particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention relates generally to a method for feeding fine-sized raw materials and more particularly a method for feeding fine-sized raw materials to an existing process.
  • the present invention also relates to the use of a burner for feeding fine-sized raw materials to an existing process.
  • Another known way is to sell the fines at a reduced price. If this alternative is applied, the user would have to deal with costly handling of the fines whether screened off before charging or caught in the mentioned gas cleaning system.
  • a typical example of the above described process is the use of ferroalloys as raw material (alloying element) in the steel industry. Substantial amounts of fines arise during production of such ferroalloys. Agglomeration is normally too costly an alternative here, and the fines are sold to the steel industry at a reduced price (though their composition corresponds to that of the bigger size, lumpy pieces). In the steel making processes, frequently these fines are put in barrels that are charged as such into the steel making process. Although this method may lead to some improvement, the yield is still low and a lot of fines end up in the gas cleaning system.
  • a further known alternative is feeding the fines by injection through a pipe, so-called lancing.
  • lancing the result would be the same or worse as the above described if the lance-tip is put in the free space of the process. Only if the lance-tip is put in the molten bath, it is possible to secure high feeding yields .
  • This latter solution also involves problems and drawbacks.
  • There are high costs for consumption of feeding lances and, in addition, lancing puts limits as to the particle size and moisture of the material to be injected.
  • the limited time available for the feeding and the maximum feeding rate that can be accepted often restrict the amount of fines that can be injected to only a part of the total amount of fines generated, hence the problem is not fully solved.
  • the international patent publication WO 00/86011 Al discloses a method and an apparatus for recovery of metals.
  • Fig. 1 an overall diagram of a prior art plant as disclosed in this publication is shown.
  • the plant includes a burner 20 installed in the sidewall of a furnace 30, for example an electric arc furnace.
  • the burner is an oxyfuel burner and is thus supplied with fuel through a first feeding line 21 and with oxygen through a second feeding line 22.
  • Fines or dust are supplied through a third feeding line 23 connected to some kind of feeding arrangement (not shown) .
  • the method comprises supplying essentially metallic fines to a flame of a burner, where after the fines are brought to agglomerate by means of heat from the flame, providing an essentially metallic agglomerated product.
  • this method relates only to recovery of metals, and does not provide a solution to the above-described problems and restrictions that pertain to the use of fines in an existing process.
  • An object of the present invention is to provide a method and use of a burner of the kind initially mentioned in which the above-mentioned drawbacks with known techniques are avoided or at least mitigated. More particularly, an object of the present invention is to provide a method and use of a burner for feeding fine-sized raw materials to an existing process with increased efficiency and reduced cost.
  • the invention is based on the realization that fines can be supplied directly to an existing process at high rates and with high momentum by means of a burner arrangement producing a flame of certain high power - intensity as specified in the claims, partly or wholly, melting and agglomerating the fines.
  • the present invention discloses a way to solve the fines feeding problem and to substantially reduce the negative effect of the cooling on the production rate. Additionally, it will in most cases allow sufficiently high fines feeding rates, so as to enable all fines generated in connection with a particular process to be charged into an existing furnace or vessel of the same process.
  • the fine-sized raw materials are accelerated to a high velocity before they are supplied into the flame of the oxyfuel burner. This further increases the throughput and facilitates charging the materials into an existing process.
  • FIG. 1 is a schematic diagram of a plant according to prior art for recovery of metals from fines or dust
  • FIG. 2 is a sectional view of a prior art burner used with the method according to the invention
  • FIG. 3 is a cross-sectional view of the burner shown in Fig. 2, and
  • FIG. 4 shows the apparatus for performing the method according to the invention.
  • Fig. 1 has already been described under the prior art section and will not be dealt with further .
  • the burner 20 shown in Fig. 1 will now be described in detail with reference to Figs. 2 and 3. Although this burner is known per se the present invention teaches a new use thereof.
  • the burner is a so-called oxyfuel burner and is thus supplied with fuel, such as fuel oil, propane, natural gas, butane or other combustible matter through the first feeding line 21 and with oxygen through the second feeding line 22.
  • fuel such as fuel oil, propane, natural gas, butane or other combustible matter
  • oxygen means, in - - this context, a gas with an O 2 content exceeding 21% by volume and preferably so-called technical oxygen having an O 2 content of 90-99.5%. Fines or dust are supplied through the third feeding line 23 connected to some kind of feeding arrangement (not shown).
  • the burner 20 includes a main part 24, to which the three supply lines 21-23 shown in Fig. 1 are connected.
  • the part 24 is provided with an essentially circular cross-section, see Fig. 3, in which the configuration of the supply lines 21-23 appears in more detail.
  • Fuel is supplied through the first supply line 21 in the form of six equidistant pipes 21a-f placed on a constant distance from the center axis of the main part 24.
  • Oxygen is supplied through an annular outer part 22 and thus surrounds the fuel supplied through the pipes 21a-f .
  • fines are supplied through the pipe 23, which is co-axially placed in the burner.
  • This existing process could be an Argon Oxygen Decarburization (AOD) process which is part of a process in which scrap or virgin raw materials are melted in an electric arc or induction furnace 10 and subsequently decarburized and refined in a special AOD vessel 40.
  • AOD Argon Oxygen Decarburization
  • the furnace 10 can be any metallurgical smelting/melting furnace
  • the vessel 40 can be any metallurgical refining/smelting vessel or furnace.
  • lumpy pieces of a starting material such as alloying material, iron and steel-bearing material such as scrap etc., including for example material containing ferroalloy, such as ferro-chromium or ferro-manganese, and/or nickel-bearing or iron-bearing materials, are fed to the furnace 10, wherein it is melted.
  • the molten starting material is transferred to a transfer ladle 15, wherein it is kept in a molten state.
  • the next step is to introduce the molten starting material into the process vessel 40 in any convenient way.
  • the small-sized fines are added.
  • the fines are added by means of a burner arrangement 20 similar to the prior art burner arrangement described with reference to Figs. 1-3.
  • the operation of the oxyfuel burner 20 is controlled by means of the amount of fuel and oxygen supplied through the first and second supply lines 21 and 22, respectively.
  • the supply lines are connected to sources of fuel and oxygen (not shown), as is conventional .
  • the burner 20, Fig. 4 is here mounted in upper part of the vessel 40 and preferably in a position such that the burner flame can penetrate into the vessel through its exhaust top cone.
  • the burner' can be tilted, i.e., can be positioned in different angles relative to the horizontal and the vertical.
  • the different orientations of the burner with regard to mounting position and tilting angle can be used for obtaining desired characteristics for the fines feeding and melting process.
  • a vertical or near vertical orientation of the burner and therewith the direction in which the fines are supplied to the burner flame results in an acceleration of the fines thanks to the gravity. This acceleration is in most instances preferred since it helps achieving the above-mentioned high velocity of the fines .
  • Fines are supplied through the central feeding pipe 23 at a rate that is controlled by the feeder.
  • fuel is supplied in the six fuel feeding pipes 21a-f, see Fig. 3, while an envelope of oxygen is supplied through the annular feeding area 22.
  • the oxyfuel mixture results in a flame 25 having desired properties, such as length, temperature etc., which are the result of, on the one hand, the dimensioning of burner cross section areas 21, 22, and 23, and on the other hand, the actual, controlled supply rates of fuel and oxygen respectively as well as the fines feeding rate and carrying gas flow rate if any.
  • the burner can be designed in such a way that its flame also has very high velocity; it could be 100 m/s or more.
  • An overriding feature of the burner operation is that the power intensity of the burner flame, defined as the power of the burner divided by the area of the least circle that encloses the flame root, is at least 3 kw/cm 2 or higher, and preferably the said power intensity is at least 15 kW/cm 2 .
  • the momentum of individual particles in the stream is increased by agglomeration.
  • the word "momentum” refers in this description to the momentum of individual particles after agglomeration and is for each particle obtained by multiplying its mass by its velocity.
  • the fines are accelerated to a velocity of at least 5 meters/second, and more preferably at least 10 meters/second, before they are supplied into the flame of the oxyfuel burner.
  • This acceleration can be performed by means of for example - a cyclone. This pre-acceleration ensures that the fines travel through and leave the flame at a sufficiently high velocity.
  • Fines that are fed into an oxyfuel flame will reach a certain temperature before leaving the flame. Though the residence time in the flame will be short, e.g. 0.1 seconds, the high temperature difference between the flame and the particles causes enough heat to be transferred from the flame to the fines so that they, if desired, could reach a temperature of, e.g., 500- 1,500 0 C, dependent on factors such as the fines feeding rate, its specific enthalpy, and the actual power at which the oxyfuel burner is operated.
  • the fines are fed into an oxyfuel flame and the ratio between the fines feeding rate and power of the oxyfuel burner, specific for each material fed, is in a certain range, it is possible to bring the surface layer of the fines particles to be partly or wholly molten. The result of that will be that when the fed fines particles collide when travel- ing through the turbulent flame, they will adhere to each other driven by a lowering of their total surface energy.
  • the fines injected into the flame 25 are brought to agglomerate, thus creating agglomerates of a larger size than the fines particles supplied to the burner.
  • the agglomeration process is controlled by means of several parameters, of which can be mentioned: temperature and velocity of the flame 25, energy content or density of the injected fines, burner stoichiometry, i.e., the ratio oxidizing gas to added fuel, the oxygen content of the oxidizing gas, the supply rate of oxygen and added fuel, the rate of injection of fines and their characteristics such as surface energy and melting properties, the travel time of the fines in the flame, and burner characteristics and configuration, such as tilting.
  • the burner feeding operation may be optimized by regulating the above parameters to obtain the desired yield and energy transfer.
  • the best way of feeding fines into an oxyfuel burner to obtain the above-described effects is by feeding them into the center of the flame in such a way that the travel length inside the flame is as long as possible. This is achieved if the material is fed through the center of the oxyfuel burner, i.e., the fines are fed through the burner so that they reach the center of the back-end of the flame and then travel through the center of the flame as described with reference to Fig. 2.
  • the design of the oxyfuel burner 20 shown in Fig. 2 provides conditions for high velocity and high rate of energy transfer to the fines. A high average travel time through the flame for the fines is also obtained.
  • a vessel 40 which may be an AOD vessel has been shown as the part of an existing process where the fines are to be smelted.
  • the method according to the invention is equally applicable to other kinds of vessels and furnaces, such as any refining or converter vessel, electric arc furnaces, induction furnaces and other electrically-heated furnaces, reverberatory furnaces and other fuel-heated furnaces.
  • the fines are preferably fed to the furnace by means of a feeder in combination with a carrying gas.
  • the fines supplied to the furnace could also be free-flowing, carried by means of a feed gear etc.
  • a transfer ladle has been disclosed. It will be appreciated that the raw material can be supplied to the vessel 40 in any convenient way.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Furnace Details (AREA)

Abstract

L'invention concerne un procédé d'alimentation en matières premières aux dimensions fines dans un processus existant comprenant les étapes suivantes consistant: à fournir les matières premières fines à la flamme (25) d'un brûleur (20) de gaz oxygéné, dans lequel l'intensité de puissance de la flamme, définie comme étant la puissance du brûleur divisée par la surface du cercle le plus petit contenant la racine de la flamme, est d'au moins 3 kW/cm2, à amener lesdites fines à s'agglomérer au moyen de la chaleur provenant de ladite flamme (25), créant ainsi un produit aggloméré, et à fournir le produit aggloméré avec une quantité de mouvement élevée directement à un processus existant. Le procédé résout les problèmes d'alimentation en fines et il réduit sensiblement l'effet négatif du refroidissement sur le débit de production. L'invention concerne également l'utilisation d'un brûleur d'alimentation en matières première fines d'un procédé existant.
PCT/SE2006/000308 2005-03-11 2006-03-09 Procede d'alimentation en matieres premieres Ceased WO2006096125A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20070689A FI20070689L (fi) 2005-03-11 2006-03-09 Menetelmä raaka-aineiden syöttämiseksi
DE200611000570 DE112006000570T5 (de) 2005-03-11 2006-03-09 Verfahren zur Zuführung von Rohmaterialien
SE0701987A SE0701987L (sv) 2005-03-11 2007-09-05 Metod för att mata råmaterial

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0500557-4 2005-03-11
SE0500557 2005-03-11

Publications (1)

Publication Number Publication Date
WO2006096125A1 true WO2006096125A1 (fr) 2006-09-14

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ID=36953647

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2006/000308 Ceased WO2006096125A1 (fr) 2005-03-11 2006-03-09 Procede d'alimentation en matieres premieres

Country Status (3)

Country Link
DE (1) DE112006000570T5 (fr)
FI (1) FI20070689L (fr)
WO (1) WO2006096125A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009101171A1 (fr) * 2008-02-13 2009-08-20 Khd Humboldt Wedag Gmbh Système de brûleur à déplacement vertical

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0618419A1 (fr) * 1993-04-02 1994-10-05 AIR PRODUCTS GmbH Procédé et dispositif pour éliminer les poussières d'un cubilot par incinération/formation de laitier
JPH08295956A (ja) * 1995-04-27 1996-11-12 Daido Steel Co Ltd 製鋼廃棄物を処理する方法および装置
US5876483A (en) * 1994-12-08 1999-03-02 Daido Tokushuko Kabushiki Kaisha Method and furnace for disposal of steel-making waste, and operating method of the furnace
US6001148A (en) * 1996-05-16 1999-12-14 Daido Steel Co., Ltd. Process for obtaining metal from metal oxide
WO2001086011A1 (fr) * 2000-05-05 2001-11-15 Aga Aktiebolag Procede et dispositif destines a la recuperation de metaux
US20030075843A1 (en) * 2001-08-29 2003-04-24 Empco (Canada) Ltd. Multi-purpose, multi-oxy-fuel, power burner/injector/oxygen lance device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0618419A1 (fr) * 1993-04-02 1994-10-05 AIR PRODUCTS GmbH Procédé et dispositif pour éliminer les poussières d'un cubilot par incinération/formation de laitier
US5876483A (en) * 1994-12-08 1999-03-02 Daido Tokushuko Kabushiki Kaisha Method and furnace for disposal of steel-making waste, and operating method of the furnace
JPH08295956A (ja) * 1995-04-27 1996-11-12 Daido Steel Co Ltd 製鋼廃棄物を処理する方法および装置
US6001148A (en) * 1996-05-16 1999-12-14 Daido Steel Co., Ltd. Process for obtaining metal from metal oxide
WO2001086011A1 (fr) * 2000-05-05 2001-11-15 Aga Aktiebolag Procede et dispositif destines a la recuperation de metaux
US20030075843A1 (en) * 2001-08-29 2003-04-24 Empco (Canada) Ltd. Multi-purpose, multi-oxy-fuel, power burner/injector/oxygen lance device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 05 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009101171A1 (fr) * 2008-02-13 2009-08-20 Khd Humboldt Wedag Gmbh Système de brûleur à déplacement vertical

Also Published As

Publication number Publication date
FI20070689A7 (fi) 2007-11-06
FI20070689L (fi) 2007-11-06
DE112006000570T5 (de) 2008-01-17

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