WO2023209427A1 - Four métallurgique à système de refroidissement de fluide - Google Patents

Four métallurgique à système de refroidissement de fluide Download PDF

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Publication number
WO2023209427A1
WO2023209427A1 PCT/IB2022/054665 IB2022054665W WO2023209427A1 WO 2023209427 A1 WO2023209427 A1 WO 2023209427A1 IB 2022054665 W IB2022054665 W IB 2022054665W WO 2023209427 A1 WO2023209427 A1 WO 2023209427A1
Authority
WO
WIPO (PCT)
Prior art keywords
conduit
cooling fluid
furnace
inlet
outlet
Prior art date
Application number
PCT/IB2022/054665
Other languages
English (en)
Inventor
Frederik Petrus Greyling
Original Assignee
Frederik Petrus Greyling
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 Frederik Petrus Greyling filed Critical Frederik Petrus Greyling
Publication of WO2023209427A1 publication Critical patent/WO2023209427A1/fr

Links

Classifications

    • 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; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/24—Cooling arrangements
    • 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
    • C21C5/4646—Cooling arrangements
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/001—Cooling of furnaces the cooling medium being a fluid other than a gas
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/001—Cooling of furnaces the cooling medium being a fluid other than a gas
    • F27D2009/0013—Cooling of furnaces the cooling medium being a fluid other than a gas the fluid being water
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0018—Cooling of furnaces the cooling medium passing through a pattern of tubes
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0018—Cooling of furnaces the cooling medium passing through a pattern of tubes
    • F27D2009/0021—Cooling of furnaces the cooling medium passing through a pattern of tubes with the parallel tube parts close to each other, e.g. a serpentine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0056—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for ovens or furnaces
    • F28D2021/0057—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for ovens or furnaces for melting materials

Definitions

  • a metallurgical furnace typically comprises a shell and a roof.
  • the shell defines a taphole below a taphole lintel and the roof defines at least one opening for an electrode and at least one further opening for at least one chute for feeding raw material into the furnace.
  • Electrode clamps are used to hold the electrode and feed the electrode through the at least one opening.
  • the at least one chute may extend into a chamber defined by the shell and may terminate at a distal end in a chute tip.
  • high intensity cooling of the furnace and more particularly the shell of the furnace is required.
  • effective cooling of a furnace shell is achieved by circulating cooling water through a conduit which is welded onto a metal cladding layer or jacket of the furnace shell.
  • the cooling water is typically circulated through the conduit at a pressure of about 500kPa (above the prevailing atmospheric pressure).
  • An air-cooling system for the portion of the furnace shell that locates below the taphole of the furnace has a very low efficiency when compared to water-cooling. This is due to water having a thermal conductivity which is at least twenty times higher than that of air. Furthermore, air-cooling cowlings and ducts often get blocked by splashing metal, matte or slag during tapping operations. Spray-water cooling systems are prone to scale formation on the furnace shell, which in turn causes poor heat transfer and lowers the cooling efficiency significantly. During tapping, the splashing of metal, matte, or slag can also cause blockages of spray nozzles and water catchment throughs.
  • Such critical components or parts include, but is not limited to: the portion of the shell which locates below the taphole of the furnace; the taphole lintel; a portion of the roof in a region of the at least one opening for an electrode; a seal for the electrode; an electrode clamp and a region towards a distal end of the at least one chute.
  • a metallurgical furnace comprising a shell and a roof, the shell defining a taphole and the roof defining at least one opening for an electrode and at least one further opening for at least one chute for feeding raw material into the furnace and - at least a first fluid-cooling system for a first part of the furnace;
  • the at least first fluid-cooling system comprising: o a conduit that is in heat exchanging relationship with the first part of the vessel, the conduit having an inlet for receiving a cooling fluid and an outlet for discharging the cooling fluid from the conduit; o a pump for creating a negative pressure within the conduit, the pump having an inlet that is in fluid flow communication with the outlet of the conduit and an outlet for discharging pressurised cooling fluid from the pump; and o a cooling fluid reservoir having an inlet that is in fluid flow communication with the outlet of the pump and an outlet that is in fluid flow communication with the inlet of the conduit, wherein, the pump draws the cooling fluid from the cooling fluid reservoir
  • the first part of the furnace may comprise at least one of: a portion of the shell which locates below the taphole of the furnace; a taphole lintel; a portion of the roof in a region of the at least one opening; a seal for the electrode; an electrode clamp and a region towards a distal end of the at least one chute.
  • the cooling fluid may be a waterless coolant fluid with an elevated boiling temperature of about 190°C.
  • the cooling fluid may comprise one of water and a water-based coolant, with elevated boiling temperature at about 130°C to 140°C.
  • the conduit may be arranged in one of a coiled and a serpentine configuration.
  • the conduit may be manufactured from a heat conductive material.
  • the heat conductive material may be a metal such as copper, stainless steel or any other metal with a suitable heat transfer coefficient.
  • the pump may be a suction pump.
  • One example of a suitable suction pump is a positive displacement pump.
  • the metallurgical furnace may comprise a heat exchanger that is in fluid flow communication with the outlet of the pump and the inlet of the cooling fluid reservoir.
  • the heat exchanger serves to lower the temperature of the cooling fluid that has passed through the conduit and the pump, prior to it being fed to the cooling fluid reservoir.
  • the heat exchanger may comprise a plate heat exchanger that is cooled by means of a closed-circuit water-cooling system.
  • the cooling fluid reservoir may be positioned relative to the conduit inlet such that a top surface of cooling fluid that locates in the cooling fluid reservoir is at the same elevation as the inlet of the conduit or at an elevation lower than the inlet of the conduit.
  • the first part of the furnace comprises the portion of the shell which locates below the taphole of the furnace.
  • the shell may comprise a metal cladding layer and the conduit may be attached to the metal cladding layer by means of a welded joint.
  • the conduit may be one of: embedded in the shell; and integrally formed within the shell of the furnace.
  • the metallurgical furnace may also comprise at least a second fluid-cooling system for a second part of the furnace, the second part of the furnace comprising another of: the portion of the shell which locates below the taphole of the furnace; the taphole lintel; the portion of the roof in a region of the at least one opening; the seal for the electrode; the electrode clamp and the region towards a distal end of the at least one chute, the at least second fluid-cooling system comprising: - a conduit that is in heat exchanging relationship with the second part, the conduit having an inlet for receiving a cooling fluid and an outlet for discharging the cooling fluid from the conduit; - a pump for creating a negative pressure within the conduit, the pump having an inlet that is in fluid flow communication with the outlet of the conduit and an outlet for discharging pressurised cooling fluid from the pump; and - a cooling fluid reservoir having an inlet that is in fluid flow communication with the outlet of the pump and an outlet that is in fluid flow communication with the inlet of the conduit,
  • each fluid-cooling system may be used to cool respective parts of the furnace.
  • Each of these fluid-cooling systems may operate independently from one another.
  • each fluid-cooling system may have its own pump, heat exchanger and cooling fluid reservoir.
  • a plurality of such cooling systems may increase the safety of operating the furnace.
  • Another part or balance of the shell may be cooled by a conventional cooling system utilizing a cooling fluid under positive pressure.
  • Also included within the scope of the invention is a method of cooling a first part of a metallurgical furnace, the first part having a conduit in heat exchanging relationship with the first part, the conduit having an inlet for receiving a cooling fluid from a cooling fluid reservoir and an outlet for discharging the cooling fluid, the method comprising: ⁇ creating a negative pressure within the conduit such that the cooling fluid is drawn from the cooling fluid reservoir through the inlet of the conduit and discharged at the outlet of the conduit; ⁇ allowing a temperature of the discharged cooling fluid to decrease; and ⁇ supplying the discharged cooling fluid to the cooling fluid reservoir.
  • FIG 1 is a schematic diagram of a metallurgical furnace that includes a fluid-cooling system; and figure 2 is a relevant Moody diagram.
  • FIG 1 An example embodiment of a metallurgical furnace is generally designated by the reference numeral 10 in figure 1.
  • the furnace 10 comprises a shell 12 and a roof 14.
  • the shell defines a taphole 16 below a taphole lintel 18 and the roof 14 defines at least one opening 20 for an electrode 22 and at least one further opening 24 for at least one chute 26 for feeding raw material into the furnace.
  • Electrode clamps 28 are used, in known manner, to hold the electrode 22 and feed the electrode through the at least one opening 20.
  • the at least one chute 26 extends into a chamber 30 defined by the shell and terminates at a distal end thereof in a chute tip 32.
  • the shell may comprise a metal cladding layer 33.
  • the furnace 10 further comprises at least a first fluid-cooling system 40 for a first part 42 of the furnace.
  • the at least first fluid-cooling system comprises a conduit 44 that is in heat exchanging relationship with the first part 42 of the vessel.
  • the conduit 44 has an inlet 46 for receiving a cooling fluid 47 and an outlet 48 for discharging the cooling fluid from the conduit.
  • a pump typically a suction pump 50, creates a negative pressure within the conduit 44.
  • the pump has an inlet 52 that is in fluid flow communication with the outlet 48 of the conduit and an outlet 54 for discharging pressurised cooling fluid from the pump.
  • a cooling fluid reservoir 56 has an inlet 58 that is in fluid flow communication with the outlet 54 of the pump and an outlet 60 that is in fluid flow communication with the inlet 46 of the conduit 44.
  • the pump 50 draws the cooling fluid 47 from the cooling fluid reservoir 56 through the inlet 46 of the conduit 44 and out the outlet 48 of the conduit in order to transfer heat from the first part 42 of the furnace to the cooling fluid that flows through the conduit.
  • the first part 42 of the furnace 10 may comprise any suitable part of the furnace, but typically a critical part as referred to in the introduction of this specification, namely, but not limited to, at least one of: the portion 42 of the shell 12 which locates below the taphole 16 of the furnace; the taphole lintel 18; a portion 62 of the roof 14 in a region of the at least one opening 20; a seal 64 for the electrode 22; the electrode clamp 28 and the region 32 towards the distal end of the at least one chute 26.
  • the first fluid cooling system 40 utilizing negative pressure as referred to above, is effective and efficient to cool critical parts of the furnace which ordinarily have relatively smaller surface areas, for example the part 42 below the taphole 16 having a surface area of in the order of 5m 2 .
  • the first fluid cooling system 40 may further comprise a heat exchanger 70.
  • the heat exchanger 70 is typically a plate heat exchanger.
  • the heat exchanger has an inlet 72 which is connected to the outlet 54 of pump 50 by a conduit 73.
  • An outlet 74 of the heat exchanger is connected to the inlet 58 of reservoir 56 by a conduit 75.
  • Heated cooling fluid from outlet 48 of the conduit 44 enters the heat exchanger at inlet 72 and is cooled by means of cooling water (not shown) from a closed-circuit water-cooling system 76.
  • the cooling fluid 47 is a waterless coolant fluid with elevated boiling point of about 190°C. Hence, such waterless coolant fluids typically boil at higher temperatures than water, provide sufficient heat transfer and are non-corrosive.
  • the cooling fluid may comprise one of water and a water-based coolant with elevated boiling point of about 130°C to 140°C.
  • the conduit 44 is made of a heat conductive material and is attached to the metal cladding layer 33 of the part 42 such that the conduit 44 is in thermal communication with the part 42, typically by welding the conduit 44 onto the cladding layer 33.
  • the conduit may be arranged in at least one of coiled and serpentine configuration. In this manner, a single conduit 44 could cover the part 42.
  • the conduit 44 is welded to the cladding 33 such that the inlet 46 and the outlet 48 are located spaced from the taphole 16.
  • a supply line conduit 80 is connected between the outlet 60 of the cooling fluid reservoir 56 and the inlet 46 of the conduit 44.
  • a return line conduit 82 is connected between the outlet 48 of the conduit 44 and the inlet 52 of the pump 50.
  • the location of the inlet 46 and outlet 48 allows the supply line conduit 80 and the return line conduit 82, respectively, to be located in spaced relation from the taphole 16.
  • the cooling fluid reservoir 56 is positioned relative to the inlet 46 of the conduit 44 such as to ensure that a top surface or level 84 of the cooling fluid 57 that locates in the cooling fluid reservoir 56 is at the same elevation or level as the inlet 46 of the conduit 44 or lower, as shown in figure 1.
  • the portion 42 is cooled by circulating the cooling fluid 47 from the cooling fluid reservoir 56, through the conduit 44 and back to the reservoir 56.
  • a negative pressure i.e., relative to the prevailing atmospheric pressure
  • the pressure at the inlet 46 of the conduit 44 is typically minus 10kPa.
  • the pressure at the outlet 48 of the conduit 44 is typically minus 40kPa.
  • the pump 50 creates suction, which causes the cooling fluid 47 to flow from the cooling fluid reservoir 56 via supply line conduit 80 and inlet 46 through the conduit 44. Whilst the cooling fluid 47 flows through the conduit 44, heat is transferred by means of conduction, thermal radiation and convection from the part 42 via conduit 44 to the cooling fluid 47 in the conduit 44.
  • the heated cooling fluid that exits the outlet 48 of the conduit 44 is sucked by the pump 50 through the return line conduit 82 towards the inlet 52 of the pump 50.
  • the heated cooling fluid is pressurised and forced out of outlet 54 of the pump 50, through conduit 73 and towards the inlet 72 of heat exchanger 70.
  • the cooling fluid exits the heat exchanger 70 under the pressure of the pump 50, and flows through the outlet 74, conduit 75 and the inlet 58 of the cooling fluid reservoir 56 into the reservoir 56.
  • Various process monitors and control logic may be employed to control the operating power of the pump 50. By controlling the operating power of the pump 50, a flow rate of the cooling fluid 47 through the conduit 44 can be controlled.
  • the flow rate of the cooling liquid 47 correlates with a rate at which heat is transferred from the part 42 to the cooling fluid 47. Therefore, by controlling the operating power of the pump 50, the rate at which heat is transferred from the hot portion 42 of the furnace shell to the conduit 44 and hence to the cooling fluid 47 can be controlled.
  • Process parameters that are typically used to control the operating power of the pump 50 include: ⁇ the temperature of the portion 42 of the furnace shell 12; ⁇ the temperature of the cooling fluid 47 in the cooling fluid reservoir 56; ⁇ the temperature of the cooling fluid 47 in any one or more of conduits 44, 80 and 82; and ⁇ the volumetric flow rate of the cooling fluid 47 through any one or more of conduits 44, 80 and 82.
  • a major advantage of the above-described fluid-cooling system 40 is that, owing to the negative pressure in the conduit 44, cooling fluid 47 that circulates through the conduit 44 will not be forced into the furnace chamber 30 if a crack is formed or burn-through occurs in part 42 of the furnace shell 12. Rather, in such an eventuality, at least some of the cooling fluid within the conduit 44 would still be sucked through the conduit 44 and out of outlet 48. The cooling fluid (which is not sucked through the conduit) would not be forced into a chamber 30 of the furnace 10. Thus, the cooling fluid that circulates through the conduit 44 should not come into contact with hot liquid metal, matte or slag (not shown) that locates in the chamber of the furnace 10.
  • the furnace 10 may also comprise at least a second and similar fluid- cooling system (not shown) comprising a conduit, such as conduit 44, for cooperating with and cooling a second part of the furnace 10, such as, but not limited to, the taphole lintel 18; the portion 62 of the roof 14 in a region of the at least one opening 20; the seal 64 for the electrode 22; the electrode clamp 28 and the region 32 towards the distal end of the at least one chute 26.
  • the conduit may be embedded in or formed integrally with a body or wall of the part.
  • the conduit 44 for cooperating with the first furnace part and the conduit cooperating with the second furnace part may be connected in series, as part of a single fluid-cooling system 40 as described above.
  • another and conventional fluid-cooling system 200 having a conduit 202 may be attached to a balance of the furnace shell 12 in a serpentine fashion.
  • Another cooling fluid (not shown) is forced at positive pressure of about 500kPa through the conduit 202 in order to transfer heat from the balance of the furnace shell 12 to the other cooling fluid that flows through the conduit 202.
  • the other fluid-cooling system 200 would be independent from the first fluid-cooling system 40. The following are design calculations which are applicable to the system as disclosed.

Abstract

Un four métallurgique (10) comprend un système de refroidissement de fluide (40) pour une première partie (42) du four sous un trou de coulée (16). Le système de refroidissement de fluide comprend un conduit (44) qui est en relation d'échange thermique avec la première partie (42). Le conduit (44) comporte un orifice d'entrée (46) et un orifice de sortie (48). Une pompe d'aspiration (50) crée une pression négative à l'intérieur du conduit (44). La pompe comporte une entrée (52) en communication d'écoulement de fluide avec la sortie (48) du conduit et une sortie (54) pour évacuer un fluide de refroidissement sous pression à partir de la pompe. Un réservoir de fluide de refroidissement (56) comporte une entrée (58) et une sortie (60). La pompe (50) aspire le fluide de refroidissement (47) à partir du réservoir de fluide de refroidissement (56) à travers l'entrée (46) du conduit (44) et hors de la sortie (48) du conduit afin de transférer la chaleur depuis la première partie (42) du four vers le fluide de refroidissement qui s'écoule à travers le conduit.
PCT/IB2022/054665 2022-04-28 2022-05-19 Four métallurgique à système de refroidissement de fluide WO2023209427A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA202204684 2022-04-28
ZA2022/04684 2022-04-28

Publications (1)

Publication Number Publication Date
WO2023209427A1 true WO2023209427A1 (fr) 2023-11-02

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ID=81927993

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603423A (en) * 1983-04-12 1986-07-29 Bbc Brown, Boveri & Company, Limited Process and device for the cooling of furnaces
EP1232675A1 (fr) * 2000-02-10 2002-08-21 Process Technology International Inc. Agencement pour le montage d'un bruleur auxiliaire ou d'une lance thermique
EP1756320A2 (fr) * 2004-04-20 2007-02-28 Amerifab, Inc. Systeme d'echangeur de chaleur utilise dans la fabrication de l'acier
US20120193844A1 (en) * 2011-02-01 2012-08-02 Carraway Kenneth L Ladle metallurgy furnace having improved roof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603423A (en) * 1983-04-12 1986-07-29 Bbc Brown, Boveri & Company, Limited Process and device for the cooling of furnaces
EP1232675A1 (fr) * 2000-02-10 2002-08-21 Process Technology International Inc. Agencement pour le montage d'un bruleur auxiliaire ou d'une lance thermique
EP1756320A2 (fr) * 2004-04-20 2007-02-28 Amerifab, Inc. Systeme d'echangeur de chaleur utilise dans la fabrication de l'acier
US20120193844A1 (en) * 2011-02-01 2012-08-02 Carraway Kenneth L Ladle metallurgy furnace having improved roof

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