EP0571731A2 - Installation pour le fusion de métaux - Google Patents

Installation pour le fusion de métaux Download PDF

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Publication number
EP0571731A2
EP0571731A2 EP93104614A EP93104614A EP0571731A2 EP 0571731 A2 EP0571731 A2 EP 0571731A2 EP 93104614 A EP93104614 A EP 93104614A EP 93104614 A EP93104614 A EP 93104614A EP 0571731 A2 EP0571731 A2 EP 0571731A2
Authority
EP
European Patent Office
Prior art keywords
furnace
melting
holding furnace
melting furnace
holding
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.)
Withdrawn
Application number
EP93104614A
Other languages
German (de)
English (en)
Other versions
EP0571731A3 (fr
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.)
Westofen GmbH
Original Assignee
Westofen 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 Westofen GmbH filed Critical Westofen GmbH
Publication of EP0571731A2 publication Critical patent/EP0571731A2/fr
Publication of EP0571731A3 publication Critical patent/EP0571731A3/fr
Withdrawn legal-status Critical Current

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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; 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
    • F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces
    • F27B3/045—Multiple chambers, e.g. one of which is used 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
    • 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
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0083—Means for stirring the charge
    • 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
    • F27D3/12—Travelling or movable supports or containers for the charge
    • F27D2003/124—Sleds; Transport supports
    • 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
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0071—Regulation using position sensors
    • 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
    • F27D2099/0043—Impulse burner
    • 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
    • F27D2099/0085—Accessories
    • F27D2099/0098—Means for moving the furnace

Definitions

  • the invention relates to a device for melting metal, in particular non-ferrous metal, with a melting furnace and a holding furnace arranged next to it, a transfer area being formed between the melting furnace and the holding furnace, through which melt from the melting furnace enters the holding furnace.
  • the melting furnace and the holding furnace are formed in a uniform structure.
  • the object of the invention is to propose a device of the type mentioned, in which the operating options of the melting furnace and the holding furnace are designed flexibly.
  • the above object is achieved in a device of the type mentioned at the outset in that the melting furnace and the holding furnace are separate, independently movable assemblies and in that a coupling device is provided in the transfer area.
  • the melting furnace can only be moved away from the holding furnace.
  • the holding oven does not need to be emptied for this. It can continue to function. With larger systems, it is also possible to move another melting furnace to the holding furnace or to fill the holding furnace directly with liquid metal.
  • the holding furnace can preferably be tilted about an approximately horizontal axis of rotation independently of the melting furnace, and the melting furnace can be approached and moved away from the holding furnace in a horizontal plane. These movement options can be designed in a structurally simple manner.
  • the coupling device is concentric with the axis of rotation of the holding furnace in such a way that the holding furnace can be tilted about the axis of rotation when the melting furnace is coupled. It is thereby achieved that the coupling device does not have to be released for pouring melt out of the holding furnace and the melting furnace can remain connected to the holding furnace.
  • the coupling device comprises a transfer snorkel which is firmly connected to the melting furnace and can be inserted into the holding furnace.
  • the transfer snorkel can preferably be inserted into the holding furnace in the direction of the axis of rotation.
  • a melting furnace 1 is arranged on a longitudinal slide 2. This can be moved on rails 4 in the horizontal longitudinal direction A (see FIG. 2) by means of drivable rollers 3. The rails 4 continue on a cross slide 5. This can be moved with rollers 6 on rails 7 in the horizontal transverse direction B (cf. FIG. 1, FIG. 2). The cross slide 5 is displaceable by means of a drive 8.
  • the melting furnace 1 has a melting chamber 9 described in more detail below. This is provided with an inclined base 10, which leads to a transfer snorkel 11 which projects beyond the melting furnace 1 and is cylindrical on its outer circumference. The central axis of the transfer snorkel 11 is labeled C.
  • a holding oven 12 is mounted on a bearing 13 and a bearing 14 so as to be tiltable about an axis of rotation D.
  • a rotary drive 15 is integrated in the bearing 14.
  • the axis of rotation D is aligned with the central axis C of the transfer snorkel 11 and is parallel to the horizontal transverse direction B.
  • the holding furnace 12 has an outlet 16 which, in the rest position, lies above the maximum melt level S.
  • the maximum melt level S lies below an end opening 17 of the holding furnace 12, through which the overflow snorkel 11 projects into the holding furnace 12 (see FIG. 3).
  • a labyrinth seal 18 is formed on the outside of the transfer snorkel 11 and at the opening 17 and can be acted upon, for example, by inert gas.
  • the transfer snorkel 11, the opening 17 and the Labyrinth seal 18 form a coupling device in the transition area between the melting furnace 1 and the holding furnace 12.
  • a heating device 19 is provided on the holding furnace 12.
  • a flue gas outlet pipe 20 and a heat recovery pipe 21 are connected to it.
  • the melting furnace 1 In regular melting operation, the melting furnace 1 is connected to the holding furnace 12 via the coupling device 11, 17, 18 and melt flows from the melting chamber 9 through the transfer snorkel 11 into the holding furnace 12. If this melt is to be poured, the holding furnace 12 is then Rotary drive 15 tilted about the axis of rotation D, so that melt flows out through the outlet 16. The coupling device 11, 17, 18 does not have to be separated for this. The melting furnace 1 can therefore continue to operate in the melting mode. Since it is not moved with the holding furnace 12, the operating conditions do not change in it.
  • the cross slide 5 is moved in the transverse direction B (to the left in FIG. 1) until the transfer snorkel 11 leaves the opening 17 of the holding furnace 12.
  • the labyrinth seal 18 loosens easily.
  • the melting furnace 1 can then be moved away on the rails 4 in the longitudinal direction A (upwards in FIG. 2).
  • the holding oven 12 remains fully functional. The melt contained in it can be poured off if necessary. In particular, the holding furnace does not need to be emptied for a repair of the melting furnace 1.
  • a slide can be provided on the holding furnace 12, which closes the opening 17 after the transfer snorkel 11 has been pulled out.
  • the melting furnace 1 is started at the holding furnace 12 by moving the melting furnace 1 on its longitudinal slide 2 onto the cross slide 5 and then moving it in the direction of the holding furnace 12 by means of the cross slide 5 in such a way that its transfer snorkel 11 into the opening 17 engages, the mutual parts of the labyrinth seal 18 also coming into engagement.
  • the cross section of the melting chamber 9 with respect to the central axis M is opposite the cross section of the shaft 22 expanded.
  • the cross section of the melting chamber 9 with respect to the central axis M is circular (see FIG. 2) or oval.
  • a charging device 23 which can be controlled from a closed position into an open position and which is located at the bottom of a filling funnel 24 into which the heat recovery pipe 21 opens.
  • a conveying device 25 is provided, which pours melt material into the hopper 24 from above.
  • a lateral opening 26 is provided on the filling funnel 24, through which melting material can be filled. This can be used as an alternative to loading from above, which reduces the overall height of the system.
  • the conveyor 25 is arranged on the longitudinal slide 2.
  • the shaft 22 widens in its area 27 near the loading device 23 from bottom to top towards the loading device 23.
  • the cross sections of the shaft 22 and the melting chamber 9 are dimensioned such that the melt material which has passed through the charging device 23 accumulates in a pouring cone K in the melting chamber 9, a space 29 remaining between the pouring cone K and the melting chamber wall 28 (see FIG. 4 ).
  • Burner nozzles 30 (see FIG. 2 two burner nozzles) are directed into this free space 29 in such a way that their flame jets strike approximately tangentially on the circumference of the pouring cone K of the melting material.
  • the melting of the bulk material is more uniform compared to the case in which the burner nozzles 30 act radially in a bed of the melting material.
  • This approximately tangential flame exposure to the melting material in the cone K improves the heat transfer to the Melting material. The consequence of this is that even at a comparatively low combustion chamber temperature, the melting material is melted evenly. This also reduces the burn-up.
  • the loading device 23 has two groups 31, 32 (see FIG. 3) of horizontally displaceable frames 33, which are adjustable by drives 34, 35. With this loading device 23, the desired cone K of the melting material in the melting chamber 9 can be set in a simple manner. The melting material is not discharged into the melting chamber 9 continuously in batches, but in smaller quantities (e.g. through 3 opening stages) or through a slow, continuous opening of the charging device 23 in order to maintain the pouring cone K.
  • a photocell 36 is provided which is directed towards the tip of the pouring cone K. If the melting material reaches the tip of the bulk cone K, the frames 33 are not opened further, so that no further bulk material reaches the melting chamber 9. Then, in the course of melting, the melting material sinks under the tip of the pouring cone K, then the frames 33 are moved away from one another, so that further melting material reaches the melting chamber 9.
  • the frames 33 consist of refractory, ceramic or metallic material.
  • the loading device with its frames 31, 32 forms an adjustable grate. This is designed so that even if it is closed per se or does not discharge any melting material into the melting chamber 9, it nevertheless allows hot exhaust gas to pass through the melting material in the filling funnel 24 in order to preheat it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
EP93104614A 1992-04-07 1993-03-20 Installation pour le fusion de métaux. Withdrawn EP0571731A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924211503 DE4211503C2 (de) 1992-04-07 1992-04-07 Einrichtung zum Schmelzen von Metall
DE4211503 1992-04-07

Publications (2)

Publication Number Publication Date
EP0571731A2 true EP0571731A2 (fr) 1993-12-01
EP0571731A3 EP0571731A3 (fr) 1995-05-24

Family

ID=6456200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93104614A Withdrawn EP0571731A3 (fr) 1992-04-07 1993-03-20 Installation pour le fusion de métaux.

Country Status (2)

Country Link
EP (1) EP0571731A3 (fr)
DE (1) DE4211503C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014217534B4 (de) * 2014-09-03 2025-11-06 Volkswagen Aktiengesellschaft Magnesium-Gießanlage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4406260A1 (de) * 1994-02-25 1995-08-31 Fuchs Technology Ag Verfahren zum Betrieb eines Einschmelzaggregates mit zwei nebeneinander angeordneten Öfen und Einschmelzaggregat

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE520174C (de) * 1927-04-08 1931-03-07 Badische Maschinenfabrik & Eis Verwendung eines zylindrischen drehbaren Trommelofens gemaess
DE564490C (de) * 1928-10-16 1932-11-19 Esslingen Maschf Aus einem Kupolofen und mehreren ortsveraenderlichen Veredelungsoefen bestehende Schmelzvorrichtung fuer Eisen und Metalle
DE617167C (de) * 1932-05-22 1935-08-13 Peter Marx Kupolofen mit darunter befindlichem Veredelungsherd
DE721086C (de) * 1936-11-05 1942-05-23 Peter Marx Schachtschmelzofen mit Vorherd
LU50003A1 (fr) * 1965-12-06 1967-06-06
US3981719A (en) * 1975-07-08 1976-09-21 Kyoei Steel Works, Ltd. Method for receiving molten steel from an electric furnace
DE3247023A1 (de) * 1982-12-18 1984-06-20 W. Strikfeldt & Koch Gmbh, 5276 Wiehl Einrichtung zur beschickung von industrieoefen, insbesondere metallschmelzoefen, mit vorwaermung des beschickungsguts durch ausnutzung der abgaswaerme
CH661788A5 (de) * 1984-02-21 1987-08-14 Gautschi Electro Fours Sa Beschickungsvorrichtung fuer einen schmelzofen.
FR2666816B1 (fr) * 1990-09-13 1994-05-20 Air Liquide Installation de fonderie a fours rotatifs et procede d'exploitation.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014217534B4 (de) * 2014-09-03 2025-11-06 Volkswagen Aktiengesellschaft Magnesium-Gießanlage

Also Published As

Publication number Publication date
DE4211503C2 (de) 1995-01-19
EP0571731A3 (fr) 1995-05-24
DE4211503A1 (de) 1993-10-14

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