EP0459864A1 - Ofen für die Nachwärmung von metallurgischen Produkten - Google Patents

Ofen für die Nachwärmung von metallurgischen Produkten Download PDF

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Publication number
EP0459864A1
EP0459864A1 EP91401305A EP91401305A EP0459864A1 EP 0459864 A1 EP0459864 A1 EP 0459864A1 EP 91401305 A EP91401305 A EP 91401305A EP 91401305 A EP91401305 A EP 91401305A EP 0459864 A1 EP0459864 A1 EP 0459864A1
Authority
EP
European Patent Office
Prior art keywords
oven
products
wall
axis
walls
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Withdrawn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
EP91401305A
Other languages
English (en)
French (fr)
Inventor
Pierre-Jacques Lhomme
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.)
Fives Stein SA
Original Assignee
Stein Heurtey SA
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 Stein Heurtey SA filed Critical Stein Heurtey SA
Publication of EP0459864A1 publication Critical patent/EP0459864A1/de
Withdrawn legal-status Critical Current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
    • F27B3/26—Arrangements of heat-exchange apparatus
    • 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
    • F27B3/06—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement
    • F27B3/065—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces with movable working chambers or hearths, e.g. tiltable, oscillating or describing a composed movement tiltable
    • 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
    • F27D2003/0085—Movement of the container or support of the charge in the furnace or in the charging facilities
    • F27D2003/0089—Rotation about a horizontal or slightly inclined axis
    • F27D2003/009—Oscillations about a horizontal axis; Rocking

Definitions

  • the present invention relates to an oven intended in particular for heating mineral products, in particular metallurgical products, preferably in bulk and more particularly for heating waste from metallurgical or iron and steel installations.
  • rotary kilns In factories specializing in the recovery of metallic waste, such as aluminum turnings in particular, rotary kilns are used.
  • the rotary ovens currently produced are rotatably mounted on rollers and they are heated using a burner whose flame develops along the axis of the oven.
  • These known ovens are made in such a way that the flame heats the roof and, due to the rotary movement of the oven, this roof is found some time later under the products introduced in bulk into the oven enclosure and which are thus heated to their tower.
  • the invention relates to an oven intended for reheating metallurgical products and more particularly loose metal waste which is mounted on rollers and in which the products are reheated by heat exchange with one of the walls of the oven previously subjected to the effect of a means of heating, this oven being characterized in that it is driven in a rotational movement, along its axis, preferably in a reciprocating movement and in that it comprises a burner system which is designed so as to heat alternately one wall of the oven then the opposite wall, so that one of said walls is in the heating phase while the other wall transmits the heat which it has previously stored, during its heating phase, to the products to be heated.
  • the burner system comprises two burners arranged symmetrically on either side of the axis of rotation of the oven and on the roof of the latter, the axis of each of said burners being positioned so that each burner heats one of the walls of the oven.
  • this movement is obtained using at least one double-acting cylinder which acts on a workpiece square shaped placed on the outside wall of the oven in its upper part.
  • the burner system comprises regenerative burners.
  • the oven containing products P to be heated these being preferably arranged in bulk in the oven enclosure. It may especially be mineral products, in particular metallurgical products and more particularly metallic waste.
  • this example of application has no limiting character.
  • the entire oven 10 is mounted on a roller system such as 12 so that the oven can undergo a rotational movement along its axis X-X ′.
  • this movement is a reciprocating movement which, in this exemplary embodiment which has no limiting character, is obtained using at least one double-acting cylinder such as 14 whose the rod is articulated on a square-shaped part 16 welded to the upper part of the external wall of the oven as can be seen in FIGS. 2 and 3.
  • the rotary movement of the oven can be continuous type.
  • the heating means of the oven consist of two burners 18, 18 ′ which are placed on the roof of the oven and positioned symmetrically with respect to the longitudinal plane of symmetry of the oven and whose orientation is chosen so that the flame developed by these burners heats the wall of the oven facing it. It can be seen in FIG. 2 that the burner 18 heats the wall 20 of the oven and that the burner 18 ′ heats the opposite wall 22.
  • the sectional profile of the oven object of the present invention shows the presence of a surface of conduction with the products to be heated and of radiation and convection with the fumes, greater than that of a rotary kiln according to the prior art, of the cylindrical type.
  • the oven according to the invention is in alternating rotation, which constitutes a very important difference compared to rotary ovens according to the prior art in which the rotation is of the continuous type.
  • This design allows in particular the use of burners 18, 18 'which, are no longer arranged along the axis of the oven as seen above, which allows the use of regenerative burners.
  • this solution makes it possible to obtain larger exchange surfaces between the products to be reheated and the walls of the oven previously heated by the burner system, these walls with a high heat storage capacity.
  • the present invention is not limited to the embodiments described and / or shown here but that it encompasses all variants thereof.
  • the oven has in cross section the shape of a triangle, and preferably an equilateral triangle, one can consider any other shape compatible with the effects sought by the invention.
  • the triangular shape given to the oven which is the subject of the present invention lends itself remarkably well to the use of regenerative burners.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP91401305A 1990-05-29 1991-05-21 Ofen für die Nachwärmung von metallurgischen Produkten Withdrawn EP0459864A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9008257 1990-05-29
FR9008257A FR2663950B1 (fr) 1990-06-29 1990-06-29 Four pour le rechauffage de produits metallurgiques.

Publications (1)

Publication Number Publication Date
EP0459864A1 true EP0459864A1 (de) 1991-12-04

Family

ID=9398177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91401305A Withdrawn EP0459864A1 (de) 1990-05-29 1991-05-21 Ofen für die Nachwärmung von metallurgischen Produkten

Country Status (2)

Country Link
EP (1) EP0459864A1 (de)
FR (1) FR2663950B1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE645304C (de) * 1935-11-09 1937-05-25 Metallgesellschaft Akt Ges Pendelofen
US3377059A (en) * 1965-12-27 1968-04-09 Ankersen Borge Richard Rotary hearth metal melting furnaces
DE3200052A1 (de) * 1981-01-12 1982-08-12 Voest-Alpine AG, 4010 Linz Kippbares metallurgisches gefaess
EP0368633A2 (de) * 1988-11-08 1990-05-16 British Gas plc Verfahren und Apparat für die Heizung eines Gefässes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE645304C (de) * 1935-11-09 1937-05-25 Metallgesellschaft Akt Ges Pendelofen
US3377059A (en) * 1965-12-27 1968-04-09 Ankersen Borge Richard Rotary hearth metal melting furnaces
DE3200052A1 (de) * 1981-01-12 1982-08-12 Voest-Alpine AG, 4010 Linz Kippbares metallurgisches gefaess
EP0368633A2 (de) * 1988-11-08 1990-05-16 British Gas plc Verfahren und Apparat für die Heizung eines Gefässes

Also Published As

Publication number Publication date
FR2663950B1 (fr) 1993-05-28
FR2663950A1 (fr) 1992-01-03

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