EP1422974B1 - Objet façonné obtenu à partir de matériel de nature Söderberg - Google Patents

Objet façonné obtenu à partir de matériel de nature Söderberg Download PDF

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Publication number
EP1422974B1
EP1422974B1 EP20030405309 EP03405309A EP1422974B1 EP 1422974 B1 EP1422974 B1 EP 1422974B1 EP 20030405309 EP20030405309 EP 20030405309 EP 03405309 A EP03405309 A EP 03405309A EP 1422974 B1 EP1422974 B1 EP 1422974B1
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EP
European Patent Office
Prior art keywords
groove
mould
wall
shaped
shaped body
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.)
Expired - Lifetime
Application number
EP20030405309
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German (de)
English (en)
Other versions
EP1422974A1 (fr
Inventor
Robert Becker
Philippe Maurer
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.)
Aluminium Rheinfelden GmbH
Original Assignee
Aluminium Rheinfelden 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
Priority claimed from EP02406004A external-priority patent/EP1422973A1/fr
Application filed by Aluminium Rheinfelden GmbH filed Critical Aluminium Rheinfelden GmbH
Priority to EP20030405309 priority Critical patent/EP1422974B1/fr
Publication of EP1422974A1 publication Critical patent/EP1422974A1/fr
Application granted granted Critical
Publication of EP1422974B1 publication Critical patent/EP1422974B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/06—Electrodes
    • H05B7/08—Electrodes non-consumable
    • H05B7/085—Electrodes non-consumable mainly consisting of carbon
    • H05B7/09—Self-baking electrodes, e.g. Söderberg type electrodes

Definitions

  • the invention relates to a shaped body of a Söderberg mass for electric arc furnaces, having a bottom surface, a longitudinal axis at right angles to the bottom surface and a lateral surface extending parallel to the longitudinal axis from the circumference of the bottom surface to the periphery of a top surface.
  • Moldings of a Söderberg mass are used in practice for various electrolysis processes, for example for the production of ferroalloys.
  • a Söderberg mass consists mainly of anthracite, coke, binders and possibly other aggregates.
  • To transport the moldings they are placed on pallets after production and can be transported by means of a lift truck.
  • the insertion of the moldings in the electrodes is usually carried out by means of a crane.
  • From the EP-C-529 118 are designed as hollow electrodes shaped body of the type mentioned above.
  • the cavity of the hollow electrodes is stamped on the electric furnace with fresh electrode mass.
  • the US-A-5,749,497 discloses a container for, for example, liquid soap. Laterally formed on the container ribs provide a better grip when the container is held in the hand.
  • the DE-U-76 24 106 discloses a packaging unit for items which are stacked and secured on a pallet for transport.
  • the invention has the object of providing moldings of the type mentioned in such a way that they can be transported by a forklift, without the need for a pallet or other packaging aids are required.
  • the bearing surface is formed by the bottom surface and the groove surface is formed by a first groove wall of the groove-shaped depressions formed by opposite sides of the lateral surface.
  • the distance between the first groove wall directed towards the bottom surface and the top surface is preferably smaller than the distance between the first groove wall and the bottom surface.
  • the groove-shaped depressions have an angle with the longitudinal axis of about 30 to 60 °, preferably forming about 45 °, rising from the lateral surface against the top surface second groove wall.
  • the two groove walls are delimited by a groove bottom lying parallel to the longitudinal axis, wherein the groove bottoms of the two depressions are expediently parallel to one another.
  • the special cross-sectional formation of the groove-shaped depressions enable a safe and rapid approach of the forks of a lift truck to serving as a support first groove wall.
  • the bearing surface is formed by the lateral surface and the groove surface is formed by a groove bottom of the groove-shaped depressions formed by the same sides of the lateral surface.
  • the groove-shaped depressions preferably extend at a right angle to the longitudinal axis and the opening of the groove-shaped depressions is at least as wide as the groove bottom.
  • the opening of the groove-shaped depressions is at least as wide as the groove bottom.
  • the inventive moldings can without pallets with a lift truck unloaded, transported and stacked. In addition, storage and storage space can be saved.
  • the devices customary today for the production of moldings from a Söderberg mass have a tubular mold standing on a flat bottom plate with a mold axis standing at a right angle to the bottom plate.
  • the mold comprises a stationary mold wall part which is connected to the floor plate and two mold wall parts which are pivotable on the stationary mold wall part and pivot about axes lying parallel to the mold axis.
  • Such a device is characterized for the production of the first embodiment of the inventive molding according to the invention in that two web-shaped elevations, each with a parallel and equidistant to the bottom plate, facing away from the bottom plate facing away first web wall of the pivotable mold wall parts. In the closed state of the mold, the elevations are opposite each other and protrude into the interior of the mold.
  • the web-shaped elevations have an with the mold axis at an angle of about 30 to 60 °, preferably about 45 ° forming, rising from the mold wall parts against the interior of the mold second web wall.
  • the two web walls are preferably delimited by a transverse wall lying parallel to the mold axis, the transverse walls of the two elevations preferably being parallel to one another in the closed state of the mold.
  • the mold wall parts form a cylindrical mold inner wall in the closed state of the mold.
  • a device suitable for producing the second embodiment of the molding according to the invention is characterized according to the invention in that the pivotable mold wall parts are articulated to the floor plate are, the pivot axes are parallel to the bottom plate and the ridge-shaped elevations protrude with a pointing away from the bottom plate transverse wall of the bottom plate.
  • the web-shaped elevations extend at a right angle to the pivot axes and the transverse wall facing away from the bottom plate is at least as wide as the web-shaped elevation on the bottom plate.
  • the transverse wall facing away from the base plate may be delimited by two web walls tapered at an angle of 0 to 30 °.
  • FIG. 1 to 3 illustrated cylindrical molded body 10 from a Söderbergmasse, also called Söderberg, has a bottom surface 14, a top surface 16 and a cylindrical surface 12 with a longitudinal or cylindrical axis z.
  • the bottom surface 14 is at the same time the bearing surface of the molded body 10.
  • two groove-shaped depressions 18, 20 are formed from opposite sides of the lateral surface 12.
  • the two groove-shaped recesses 18, 20 each have a parallel and at the same distance a to the bottom surface 14 lying against the bottom surface 14 directed groove wall 22, 24.
  • the distance a of the directed against the bottom surface 14 first groove wall 22, 24 to the top surface 16 is smaller than the distance b of the first groove wall 22, 24 to the bottom surface 14th
  • the groove-shaped depressions 18, 20 have a rising from the lateral surface 12 against the top surface 16 second groove wall 26, 28.
  • the groove wall 26, 28 forms with the longitudinal axis z an angle ⁇ of for example 45 °.
  • the two groove walls 22, 26 and 24, 28 are bounded by a parallel to the longitudinal axis z groove bottom 30, 32.
  • the groove bottoms 30, 32 of the two recesses 18, 20 are parallel to each other.
  • the in the Fig. 1 to 3 Shaped body shown for example, has a diameter D and a height h of 1000 mm, the mutual distance d of the two groove bottoms 30, 32 is 800 mm.
  • the distance a of the first groove walls 22, 24 from the bottom surface 14 is for example 750 mm, the distance b to the top surface 16 250 mm.
  • the maximum width s of the first groove wall 22, 24 is 100 mm.
  • One in the 4 and 5 shown device for producing the cylindrical shaped body 10 with the groove-shaped recesses 18, 20 has a tubular mold 34, for example, 8 mm thick steel sheet.
  • the mold 34 is located on a bottom plate 36 made of steel.
  • the base plate 36 is on suitable for Vibriervorgang steel feet 38.
  • the mold 34 is formed in three parts and has a connected to the bottom plate 36, stationary Kokillenwandteil 40, on each of which a Kokillenwandteil 42, 44 articulated via hinge joints and pivotable about pivot axes e, f are.
  • About locks 46 with locking pins the mold 34 can be locked in the closed state to form a cylindrical Kokilleninnenwand 68.
  • the axis m of the mold 34 is perpendicular to the horizontal bottom plate 36th
  • 44 web-shaped projections 48, 50 are formed on the inside of the two pivotable mold wall parts 42, which opposite to each other in the closed state of the mold 34 and protrude into the interior of the mold 34.
  • the web-shaped elevations 48, 50 each have a first web wall 52, 54 lying parallel to and at the same distance t from the bottom plate 36, pointing away from the bottom plate 36 and projecting from the pivotable mold wall parts 42, 44.
  • a second web wall 56, 58 rises from the Kokillenwand turnover 42, 44 against the interior of the mold 34 and forms with the Kokillenachse m an angle ⁇ of, for example, 45 °.
  • the two web walls 52, 56 and 54, 58 are bounded by a transverse to the mold axis m transverse wall 60, 62.
  • the transverse walls 60, 62 of the two web-like elevations 48, 50 are in the closed state of the mold 34 parallel to each other.
  • the closed mold 34 is filled with hot, still plastic Söderberg mass. Subsequently, the device for compacting the Söderberg mass is vibrated or vibrated and subsequently cooled by applying the Kokillenaussenwand with water.
  • the mold 34 is unlocked and opened by pivoting the two Kokillenwandmaschine 42, 44.
  • the corresponding groove-shaped depressions 18, 20 were formed in the molding 10.
  • the removal of the shaped body 10 from the opened mold 34 by means of a in Fig. 6 illustrated lift truck 64 having two parallel, laterally and vertically adjustable forks 66.
  • the lift truck 64 moves with the according to the dimensions of the shaped body 10 previously positioned forks 66 in the groove-shaped recesses 18, 20 a.
  • the molded body 10 is lifted from the bottom plate 36 and can be transported with the forklift 64 on.
  • cylindrical shaped body 110 from a Söderberg mass also called Söderberg
  • the lateral surface 112 is composed of two mutually parallel, rectangular surfaces 172, 174 and two over 90 ° extending cylinder segment surfaces 176, 178.
  • One of the rectangular surfaces is also the bearing surface.
  • two groove-shaped recesses 118, 120 are formed from the same side of the lateral surface 112 and the rectangular bearing surface 172.
  • the two groove-shaped depressions 118, 120 each have a groove bottom 130, 132 lying parallel to and at the same distance b 'from the rectangular bearing surface 172, directed against the bearing surface 172.
  • the groove-shaped depressions 118, 120 have two groove walls 122, 126 or 124, 128 delimiting the groove bottom 130, 132 and ending on the bearing surface 172.
  • the groove walls 122, 126 and 124, 128 may extend parallel to each other and at a right angle to the longitudinal axis z.
  • the groove walls 122, 126 or 124, 128 also diverge against the bearing surface 172 at an angle of, for example, about 10 ° against a plane perpendicular to the longitudinal axis z.
  • the groove walls 122, 126 and 124, 128 of the two recesses 118, 120 are parallel to each other.
  • the in the Fig. 7 to 9 Shaped body shown for example, has a diameter D 'of 900 mm, a length L of 2000 mm and a radius R of the cylinder segment walls 176, 178 of 450 mm, the mutual distance d' of mutually corresponding groove walls 122, 124 and 126, 128 800 mm.
  • the distance b 'of the groove bottoms 130, 132 from the bearing surface 172 is for example 80 mm, the width s' of the groove bottoms 130, 132 100 mm.
  • conical recesses 180, 182 are arranged in the cylinder segment walls 176, 178 facing conical recesses 180, 182 are arranged.
  • One in the 10 and 11 shown apparatus for producing the shaped body 110 with the groove-shaped recesses 118, 120 has a mold 134, for example, 8 mm thick steel sheet.
  • the mold 134 is bounded by a bottom plate 136 made of steel.
  • the bottom plate 136 stands on steel feet 138 suitable for the vibrating process.
  • the mold 134 has two stationary mold wall parts 140, 141 connected to the bottom plate 136.
  • two pivotable mold wall parts 142, 144 are further articulated via hinge joints and pivotable about pivot axes e ', f'.
  • About locks 146 with locking pins the mold 134 can be locked in the closed state.
  • Fig. 11 can be seen on the bottom plate 136 parallel to each other web-shaped elevations 148, 150 formed, which protrude in the closed state of the mold 134 into the interior of the mold 134.
  • the web-shaped elevations 148, 150 each have a transverse wall 160, 162 lying at the same distance from the bottom plate 136.
  • Two web walls 152, 156 and 154, 158 delimit the transverse walls 160, 162 and run parallel to one another or run at an angle of eg 10 ° to a plane perpendicular to the bottom plate 136 Flat apart, so that the width of the web-shaped elevations 148, 150 on the bottom plate 136 is equal to or greater than the width of the transverse walls 160, 162.
  • the closed mold 134 is filled with hot, still plastic Söderberg mass. Subsequently, the device for compacting the Söderberg mass is vibrated or vibrated and subsequently cooled by applying the Kokillenaussenwand with water. As soon as the resulting molded body 110 has reached sufficient strength, the mold 134 is unlocked and opened by pivoting the two mold wall parts 142, 144.
  • the corresponding groove-shaped recesses 118, 120 were formed in the molding 110.
  • the removal of the molded body 110 from the opened mold 134 is carried out after grasping with a grasping forceps and lifting, for example with a crane, by means of a in Fig. 12 illustrated lift truck 164 having two parallel, laterally and vertically adjustable forks 166.
  • the forklift 164 moves with the according to the dimensions of the shaped body 110 previously positioned forks 166 in the groove-shaped recesses 118, 120 a.
  • the two conical recesses 180, 182 in the cylinder segment walls 176, 178 for gripping and erecting and inserting the moldings 110 in electric arc furnaces.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (19)

  1. Objet façonné en un matériau de Söderberg pour des fours à arc électrique, avec une face inférieure (14, 114), un axe longitudinal (z) orienté à angle droit par rapport à la face inférieure (14, 114), et une face latérale (12, 112) s'étendant parallèlement à l'axe longitudinal (z) depuis le périmètre de la face inférieure (14, 114) jusqu'au périmètre d'une face supérieure (16, 116), caractérisé en ce que deux creux en forme de rainures (18, 20; 118, 120), avec chaque fois une face de rainure située parallèlement et à égale distance (b) d'une face d'appui et orientée vers la face d'appui, sont formés à partir de la face latérale (12, 112).
  2. Objet façonné selon la revendication 1, caractérisé en ce que la face d'appui est formée par la face inférieure (14) et la face de rainure est formée par un premier flanc de rainure (22, 24) des creux en forme de rainures (18, 20) formés à partir de côtés opposés l'un à l'autre de la face latérale (12).
  3. Objet façonné selon la revendication 2, caractérisé en ce que la distance (a) entre le premier flanc de rainure (22, 24) orienté vers la face inférieure (14) et la face supérieure (16) est plus petite que la distance (b) entre le premier flanc de rainure (22, 24) et la face inférieure (14).
  4. Objet façonné selon la revendication 2 ou 3, caractérisé en ce que les creux en forme de rainures (18, 20) présentent un deuxième flanc de rainure (26, 28) montant à partir de la face latérale (12) vers la face supérieure (16) et formant un angle α de 30° à 60°, de préférence d'environ 45°, avec l'axe longitudinal (z).
  5. Objet façonné selon la revendication 4, caractérisé en ce que les deux flancs de rainures (18, 26; 20, 28) sont limités par un fond de rainure (30, 32) orienté parallèlement à l'axe longitudinal (z) et les fonds de rainure (30, 32) des deux creux (18, 20) sont parallèles l'un à l'autre.
  6. Objet façonné selon l'une quelconque des revendications 2 à 5, caractérisé en ce que la face latérale (12) est de forme cylindrique.
  7. Objet façonné selon la revendication 1, caractérisé en ce que la face d'appui (172) est formée par la face latérale (112) et la face de rainure est formée par un fond de rainure (130, 132) des creux en forme de rainures (118, 120) formés à partir du même côté de la face latérale (112).
  8. Objet façonné selon la revendication 7, caractérisé en ce que les creux en forme de rainures (118, 120) s'étendent à angle droit par rapport à l'axe longitudinal (z).
  9. Objet façonné selon la revendication 7 ou 8, caractérisé en ce que l'ouverture des creux en forme de rainures (118, 120) est au moins aussi large que le fond de rainure (130, 132).
  10. Objet façonné selon la revendication 9, caractérisé en ce que le fond de rainure (130, 132) est limité par deux flancs de rainure (122, 126; 124, 128) s'écartant l'un de l'autre avec un angle α de 0 à 20°.
  11. Dispositif pour la fabrication d'un objet façonné en un matériau de Söderberg pour des fours à arc électrique, avec une plaque de base plane (36), une coquille (34) dressée sur la plaque de base (36), dans lequel la coquille (34) présente au moins une partie de paroi de coquille (40) immobile assemblée à la plaque de base (36) et deux parties de paroi de coquille (42, 44) pouvant pivoter autour d'axes de pivotement (e, f), caractérisé en ce que deux protubérances en forme de nervures (48, 50), avec chaque fois un flanc de nervure (52, 54) situé parallèlement et à égale distance (t) de la plaque de base (36), sont saillantes sur au moins une partie de paroi de coquille (42, 44).
  12. Dispositif selon la revendication 11, caractérisé en ce que la coquille est de forme tubulaire et présente un axe de coquille (m) orienté à angle droit par rapport à la plaque de base (36), dans lequel les parties de paroi de coquille pivotantes (42, 44) sont articulées sur la partie de paroi de coquille fixe (40), les axes de pivotement (e, f) sont parallèles à l'axe de coquille (m) et les protubérances (48, 50) sortent des parties de paroi de coquille pivotantes (42, 44) et, à l'état fermé de la coquille (34), sont opposées l'une à l'autre et pénètrent à l'intérieur de la coquille (34).
  13. Dispositif selon la revendication 12, caractérisé en ce que les protubérances en forme de nervures (48, 50) présentent un deuxième flanc de nervure (56, 58) montant à partir des parties de paroi de coquille (42, 44) vers l'intérieur de la coquille (34) et formant un angle α de 30° à 60°, de préférence d'environ 45°, avec l'axe de coquille (m).
  14. Dispositif selon la revendication 13, caractérisé en ce que les deux flancs de nervure (52, 56; 54, 58) sont limités par une paroi transversale (60, 62) située parallèlement à l'axe de coquille (m) et les parois transversales (60, 62) des deux protubérances (48, 50) sont parallèles l'une à l'autre lorsque la coquille (34) se trouve à l'état fermé.
  15. Dispositif selon l'une quelconque des revendications 12 à 14, caractérisé en ce que les parties de paroi de coquille (40, 42, 44) forment, dans l'état fermé de la coquille (34), une paroi intérieure de coquille de forme cylindrique (68).
  16. Dispositif selon la revendication 11, caractérisé en ce que les parties de paroi de coquille pivotantes (142, 144) sont articulées sur la plaque de base (136), les axes de pivotement (e', f') sont parallèles à la plaque de base (136) et les protubérances en forme de nervures (148, 150) sortent de la plaque de base (136) avec une paroi transversale (160, 162) s'écartant de la plaque de base (136).
  17. Dispositif selon la revendication 16, caractérisé en ce que les protubérances en forme de nervures (148, 150) sont orientées à angle droit par rapport aux axes de pivotement (e', f').
  18. Dispositif selon la revendication 16 ou 17, caractérisé en ce que la paroi transversale (160, 162) s'écartant de la plaque de base (136) est au moins aussi large que la protubérance en forme de nervure (148, 150) sur la plaque de base (136).
  19. Dispositif selon la revendication 18, caractérisé en ce que la paroi transversale (160, 162) s'écartant de la plaque de base (136) est limitée par deux flancs de nervure (152, 156; 154, 158) s'écartant l'un de l'autre avec un angle de 0° à 30°.
EP20030405309 2002-11-20 2003-05-01 Objet façonné obtenu à partir de matériel de nature Söderberg Expired - Lifetime EP1422974B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030405309 EP1422974B1 (fr) 2002-11-20 2003-05-01 Objet façonné obtenu à partir de matériel de nature Söderberg

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP02406004 2002-11-20
EP02406004A EP1422973A1 (fr) 2002-11-20 2002-11-20 Corps moulé composé d'une mase Söderberg
EP20030405309 EP1422974B1 (fr) 2002-11-20 2003-05-01 Objet façonné obtenu à partir de matériel de nature Söderberg

Publications (2)

Publication Number Publication Date
EP1422974A1 EP1422974A1 (fr) 2004-05-26
EP1422974B1 true EP1422974B1 (fr) 2011-12-14

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EP20030405309 Expired - Lifetime EP1422974B1 (fr) 2002-11-20 2003-05-01 Objet façonné obtenu à partir de matériel de nature Söderberg

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE529118C (de) * 1925-06-06 1931-07-10 Josias Rees Metallarmierte kontinuierliche Kohlenelektrode fuer elektrische OEfen
DE7624106U1 (de) * 1976-07-31 1977-08-04 Eka Plastic A S Stange Verpackungseinheit
US5373958A (en) * 1993-03-24 1994-12-20 Lobo Containers, Inc. Plastic container with threaded closure
US5749497A (en) * 1996-07-03 1998-05-12 S. C. Johnson & Son, Inc. Container and retractable hanger system

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