EP1098155B1 - Procédé pour refroidir du clinker et refroidisseur de clinker - Google Patents

Procédé pour refroidir du clinker et refroidisseur de clinker Download PDF

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Publication number
EP1098155B1
EP1098155B1 EP99121757A EP99121757A EP1098155B1 EP 1098155 B1 EP1098155 B1 EP 1098155B1 EP 99121757 A EP99121757 A EP 99121757A EP 99121757 A EP99121757 A EP 99121757A EP 1098155 B1 EP1098155 B1 EP 1098155B1
Authority
EP
European Patent Office
Prior art keywords
conveyor
grate
antechamber
cooler according
cooled
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
EP99121757A
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German (de)
English (en)
Other versions
EP1098155A1 (fr
Inventor
Klaus Klintworth
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.)
Claudius Peters Technologies GmbH
Original Assignee
Claudius Peters Technologies 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 Claudius Peters Technologies GmbH filed Critical Claudius Peters Technologies GmbH
Priority to DE59910759T priority Critical patent/DE59910759D1/de
Priority to EP99121757A priority patent/EP1098155B1/fr
Priority to AT99121757T priority patent/ATE278924T1/de
Priority to JP2000334671A priority patent/JP2001208484A/ja
Priority to US09/703,555 priority patent/US6312252B1/en
Publication of EP1098155A1 publication Critical patent/EP1098155A1/fr
Application granted granted Critical
Publication of EP1098155B1 publication Critical patent/EP1098155B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • F27D15/0206—Cooling with means to convey the charge
    • F27D15/0213—Cooling with means to convey the charge comprising a cooling grate

Definitions

  • the invention has for its object the temperature stress and the wear of the conveyor grate in the initial area, especially on the drivers.
  • the driver one before the immediate Going through the influx of well-protected anteroom, which contains an intensely chilled embankment before they enter the task area.
  • a driver Once a driver has entered this vestibule, he pushes part of the material accumulated in it in the conveying direction. Other parts of the repressed good swell over it the direction of conveyance and gather behind it with new goods entering the embankment on the stationary Rust surface from where it is at rest exposed to the influence of the cooling air until the next carrier appears to take them with them. Then they are already at a lower temperature assumed that the driver only with pre-cooled goods in Touch comes. This shields him against the fresh, uncooled goods.
  • the shape of the anteroom is not critical, provided it is on the top is covered such that the conveyor grate in the area of the vestibule is not hit directly by the feed stream.
  • the height of the anteroom is dimensioned sufficiently to accommodate the embankment is. In other words, their height is at least about everywhere just as high as it starts from the edge mentioned Slope angle corresponds.
  • the upper limit of the anteroom from a direction opposite to the conveying direction sloping inclined surface.
  • the length of the anteroom, measured in the conveying direction of the grate a little is shorter than the slope length, so not between the end of the embankment and the boundary of the anteroom A bulk-free area is created through which air can escape without cooling the firing material. This possibility can also be prevented in that the air permeability the grate area beyond the area covered by the Embankment is in any case taken, reduced or blocked becomes.
  • the vestibule At a feed speed of the carriers of 0.5 m / min. the vestibule has a length of 0.5 up to 1 m proven.
  • the longitudinal distance of the The carrier is expediently of the same order of magnitude. It should be greater than 0.8 times the length of the anteroom.
  • the drivers in front of the anteroom are locked Pass through canal, the length of which is at least its distance like.
  • the limitation of the flow rate is expedient from a sloping surface sloping in the conveying direction formed, which ends in the edge mentioned, from which the Vestibule and embankment run out.
  • the sloping sloping surface is expediently ventilated Rust plates equipped.
  • the inclined surface can be made movable around build-up and caking (so-called snowmen) can be easily solved. It is enough i.d.R. an intermittent movement.
  • the Inclined surface can be swiveled around one of the edges mentioned near the axis his.
  • the edge of the bevel on the swivel axis far end, should be as close as possible to the adjoin the adjacent wall.
  • This wall is therefore useful curved in a circular arc, the center of curvature coincides with the swivel axis of the inclined surface.
  • the wall curved in a circular arc is expedient formed by ventilated grate plates that are polygonal in an arc are approximately laid.
  • the arrangement can thereby be simplified that the lower run of the in a closed Loop guided grate conveyor as a drag chain conveyor is used. It lies immediately for this purpose or at some distance on a stationary Conveying surface on which the rust diarrhea arrives and from which it travels through the grate conveyor is dissipated.
  • the drag chain conveyor can continue until the beginning of the conveyor grate, by the stationary conveyor surface of the drag chain conveyor forming wall in the area of the beginning of the conveyor provided deflection in contact with the conveyor until the material carried by it from the stationary grate surface or one located in the deflection area inside wall can be taken over the is continued from the stationary grate surface.
  • the inside and outside wall that the conveyor at least on one include the length corresponding to the distance of the conveyor beams, form a seal for the rust subspace in relation to the sponsor.
  • a suitable seal can also provided in the area of the other deflection of the conveyor his.
  • the conveyor After leaving the grate surface, the conveyor runs through in the area of its deflection a sealing channel between one on the inside to the grate surface and a wall outside wall, which in its further course with the the lower run of the conveyor forms the drag chain conveyor.
  • the conveyor grate 1 is contained in a housing 2, the one Has feed chute 3, in which, for example, the discharge end of a rotary kiln ends. It also forms one Outlet shaft 4, which may contain a crusher 5. details the housing training and the cooling air supply and laxatives do not need to be explained because they are known.
  • the conveyor grate consists of a stationary grate part 6, the Top forms a stationary grate surface 7, and one Conveyor 8, which is a pair of pull chains on either side of the stationary Has grate part 6, the driver between them lead, in the example shown as so-called conveyor beams 9 are formed.
  • the chains can be from wheels 10 be supported and led.
  • the sponsor can also be in other Be fashioned, for example in the form of a or several screw conveyors.
  • the decisive factor is that one A plurality of drivers is present in the conveying direction Have a distance from each other.
  • the stationary grate part 6 contains cooling air through openings for supplied via the pressurized grate subspace 14 Cooling air.
  • the rust subspace can - as is known - in several chambers can be divided, which allow different Sections of the cooler with different cooling air pressure to act upon.
  • the conveyor is closed Loop guided, its upper run above the stationary Grate surface 7 runs and its lower run 11 in the grate subspace is returned. In between there is a task side Deflection 12 and an outlet-side deflection. On their Details are given below.
  • the hot kiln is fed into the feed shaft 3 from the furnace outlet thrown and forms a total of those indicated by arrows 16 Feed stream, this term nothing about the Density of this current is supposed to say.
  • a material bed 17 is formed, which on the stationary grate surface 7 rests and from the movement of the conveyor beams 9 is taken in the conveying direction 18.
  • the conveyor beams 9 expediently have such a large height difference from the stationary grate surface 7 that in between a stationary or weakly moving, relatively cool Good layer forms, causing wear on the stationary Rust surface is reduced. This can also be done with facilities be provided that the emergence of such a stationary Good layer by creating a sliding resistance promote. For example, depressions in the grate surface, Pockets, cross ribs, etc. can be provided that directly hold onto or brake goods that interact with them.
  • the distance between the drivers 9 and the grate surface 7 is expediently between 50 and 200 mm.
  • the Bed height is in particular 400 to 1000 mm, the height of the Conveyor bar 100 to 250 mm.
  • inclined surface 20 In the rear area of the feed chute (in the direction of conveyance) 3, where heavy chunks are expected to hit must be above the conveyor grate in the conveying direction sloping inclined surface 20 is provided. She will formed by grate plates used for their own cooling and for cooling the goods on it with a cooling air connection are provided.
  • the inclined surface 20 is around Axis 21 by means of a suitable drive, which at 22 as Hydraulic cylinder is indicated, pivotable. During the In operation, the inclined surface 20 is normally in a certain one Tilt position stationary.
  • the drive 22 can do this serve to set different inclination angles. Especially it is intended for the inclined surface 20 from time to time swivel to throw off caking material induce or facilitate. For example, it can be intermittent at regular intervals in a swinging motion be relocated to the building of so-called snowmen submissions.
  • the wall part 23 located behind the inclined surface 20 is the arc of movement of the trailing edge aligned the inclined surface 20 and also exists from ventilated grate plates.
  • the material falling on the inclined surface 20 slips from it gradually descended due to the slope, as a result of Exposure to cooling air undergoes intensive cooling. It then falls on the conveyor grate 1, in order for the Form bed 17. Part of the feed stream may also be immediate on the conveyor grate 1 or on the one located there Falling bed 17. However, these are smaller Pieces that the conveyor bar 9 does not hit when hitting strain, especially since they are largely protected by the material bed 17 are. Also, the one originating from the smaller particles Heat load is not so high because it cools down more quickly than the rough pieces. But only then do they reach the Conveying grate if it is already pre-cooled on the inclined surface 20 were.
  • the underside of the Conveying grate is limited and is open to Gutbett 17 out. Its opening is through the leading edge 31 (Fig. 3) of the inclined surface 20 limited, which is also indicated by the dash-dotted line Vertical line 32 determines the limit up to which the conveyor grate can be hit directly by the feed stream, that from the falling from the stove and that from the Inclined surface 20 flowing down good.
  • the height of the edge 31 therefore determines the size of the slope 33.
  • the edge 31 should generally be a smaller one Height than the adjoining Gutbett 17. However there may be cases where this is not necessary is so that the surface (angle 33) of the embankment 34 is not from the Edge 31 goes out, but lies lower. It is understood that the so-called edge 31 is not designed to be sharp-edged needs to be.
  • the stationary grate part 6 is also located under the anteroom 30. It is also ventilated in the area of the anteroom 30, 3-6 schematically through channels 35 in the grate part 6 is indicated.
  • the ventilated section of the stationary grate part 6 ends near the one in the rear (in the direction of conveyance)
  • Boundary 36 of the vestibule 30 unventilated section continued in the form of a wall 37, which is convenient connects to the conveyor 8 without significant distance. In this area there is also above the conveyor 8 a wall 38 closely adjoining it.
  • the conveyor 8 enclosing ones, from the opposing ones Walls 37, 38 formed channel has a length that is at least corresponds to the distance of the conveyor beams 9 in the conveying direction, so that there is always at least one bar 9 in it and the air outlet between the walls 37, 38 largely blocked.
  • the facing surfaces of the walls 37, 38 therefore form together with that contained therein Bar 9 is a barrier against the escape or entry of air.
  • the bed 34 located in the vestibule 30 is an intensive one Exposed to cooling. This cooling is more intense than it outside the limit 32 in the area of the estate bed 17 would be because the amount of material exposed to the cooling air flow is smaller is. It can also be made special is intensively flowed through, for example, the cooling air flow effecting pressure difference is increased. This can the anteroom 30 above the embankment 34 with a special one Air vent 40 may be provided.
  • the cooling is in the range of Embankment particularly effective because it is mainly is formed by smaller particles.
  • the slope material 34 located in the vestibule 30 is indeed intermittently through the conveyor beams 9 taken. While this is going through the anteroom move, but swells the material in front of and above them into the space that becomes free behind and is stored there on the stationary grate surface 7. Until the next conveyor beam appears, it has largely cooled down. Because he this good largely when it enters the free good bed 17 takes away and is enveloped by it, it remains there for the time being largely before the direct influence of the protected from hotter estates.
  • the anteroom should be long enough in the conveying direction to the goods in it are sufficient for pre-cooling Grant residence time. These are usually a few minutes.
  • the rule that the length of the vestibule has proven itself corresponds to about half to twice the distance between the conveyor beams.
  • the height of the edge 31 is expediently chosen so that the entire length of the vestibule 30 from the embankment 34 is taken. This is useful in view on economical use of space. It can also be avoided that cooling air through a free gap between the embankment and escapes the rear boundary 36 of the anteroom. Fig.
  • Fig. 4 shows that the vestibule is not necessarily below an inclined surface 20 must be formed, but also formed, for example, in a vertical wall 42 can be. In this case, too, he is behind the Limit 32 of the immediate feed stream.
  • the stationary one Grate part 6 has a wall 50 lying on the inside of conveyor 8 on. This forms on a section that is at least the distance corresponds to two conveyor beams 9, with one accordingly outside 51 on the conveyor Tight channel.
  • the wall 51 also settles in the area 52 of the lower one Runs the conveyor away, with the conveyor beams on of the surface formed by the wall 52 lie or small Distance from this. This causes the conveyor forms a drag chain conveyor with the wall 52, is removed by the possible rust diarrhea.
  • the wall 52 settles in the area of the deflection 12 continues as wall 53.
  • the incline of the conveyor 8 in this deflection 12 begins to approach the vertical direction, will also be on the inside of the conveyor for one Limitation provided in the case shown by a deflection roller 54 is formed, but also formed by a wall can be, which corresponds to the wall 50 in the deflection 13. So becomes the rust diarrhea carried by the conveyor on the top of the stationary grate part 6 listed and arrives at easiest way back into the product stream.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • General Induction Heating (AREA)

Claims (18)

  1. Procédé d'exploitation d'un refroidisseur de produit cuit comportant une grille de transport (1) pour le transport d'un lit (17), traversé par l'air de refroidissement, du produit à refroidir, laquelle présente une zone de chargement pour charger le produit à refroidir et est formée par une surface de grille (7) fixe et un transporteur (8) qui comprend une pluralité d'entraíneurs (9) déplacés à distance réciproque sur la surface de grille (7) dans le sens de transport (18), et qui traverse une avant-chambre (30) avant l'entrée dans la zone de chargement, caractérisé par le fait que l'avant-chambre (30) communique avec la zone de chargement par une ouverture (32) s'étendant vers le bas jusqu'au transporteur (8), de sorte que le produit à refroidir peut s'écouler dans le sens contraire au sens de transport du transporteur (8), depuis la zone de chargement dans l'avant-chambre (30) et y former un talus (34) enveloppant les entraíneurs (9), lequel talus (34) est refroidi intensivement.
  2. Procédé selon la revendication 1, caractérisé en ce que la longueur de l'avant-chambre (30) est égale à la vitesse d'avance du transporteur (8) multipliée par 0,5 à 3 min.
  3. Refroidisseur pour la mise en ouvre du procédé selon la revendication 1 avec une grille de transport (1) pour le transport d'un lit du produit à refroidir traversé par un courant d'air, qui présente une zone de chargement pour charger le produit à refroidir et qui est formée d'une grille fixe (7) et d'un transporteur (8) qui comporte une pluralité d'entraíneurs (9) déplacés dans le sens de transport (18), à distance réciproque, au dessus de la surface de grille (7) et parcourt une avant-chambre (30) avant l'entrée dans la zone de chargement, caractérisé par le fait que l'avant chambre (30) communique avec la zone de chargement au moyen d'une ouverture (32) s'étendant vers le bas jusqu'au transporteur (8), de sorte que le produit à refroidir puisse s'écouler, dans le sens contraire au sens de transport du transporteur (8), depuis la zone de chargement dans l'avant-chambre (30) et puisse y former un talus (34) enveloppant les entraíneurs, lequel talus (34) est refroidi intensivement par la surface de grille (7).
  4. Refroidisseur selon la revendication 3, caractérisé en ce que l'ouverture (32) présente un bord supérieur (31) pour limiter le courant du produit à refroidir dirigé dans le sens contraire au sens de transport du transporteur (8) dans l'avant-chambre (30).
  5. Refroidisseur selon la revendication 3 ou 4, caractérisé en ce que la hauteur de l'avant-chambre (30) est dimensionnée de façon sensiblement suffisante pour recevoir le talus (34).
  6. Refroidisseur selon l'une des revendications 3 à 5, caractérisé en ce que la longueur de l'avant-chambre (30) est légèrement inférieure à la longueur du talus.
  7. Refroidisseur selon l'une des revendications 3 à 5, caractérisé en ce que la longueur de l'avant-chambre (30) est égale à la vitesse d'avance du transporteur (8) multipliée par 0,5-3 min.
  8. Refroidisseur selon l'une des revendications 3 à 7, caractérisé en ce que l'écartement des entraíneurs (9) est supérieur à 0,8 fois la longueur de l'avant-chambre (30).
  9. Refroidisseur selon l'une des revendications 3 à 8, caractérisé en ce que les entraíneurs (9) traversent devant l'avant-chambre (30) un canal d'étanchéité dont la longueur est au moins égale à leur écartement.
  10. Refroidisseur selon l'une des revendications 4 à 9, caractérisé en ce que le bord (31) est formé par une surface oblique (20) descendant dans le sens de transport.
  11. Refroidisseur selon la revendication 10, caractérisé en ce que la surface oblique (20) est formée par des plaques de grille ventilées.
  12. Refroidisseur selon la revendication 10 ou 11, caractérisé en ce que la surface oblique (20) est déplaçable par intermittence.
  13. Refroidisseur selon la revendication 12, caractérisé en ce que la surface oblique (20) peut pivoter autour d'un axe (21) proche du bord (31).
  14. Refroidisseur selon la revendication 13, caractérisé en ce qu'une paroi (23) courbée en arc de cercle, dont l'axe de courbure est l'axe de pivotement (21), est étroitement voisine de l'extrémité, éloignée de l'axe de pivotement (21), de la surface oblique (20).
  15. Refroidisseur selon la revendication 14, caractérisé en ce que la paroi (23) courbée en arc de cercle est formée par des plaques de grille ventilées qui sont posées de manière polygonale, approximativement en arc de cercle.
  16. Refroidisseur selon l'une des revendications 3 à 15, caractérisé en ce que le bras inférieur (11) du transporteur (8) forme un transporteur à chaíne.
  17. Refroidisseur selon la revendication 16, caractérisé par le fait que le transporteur à chaíne (11) se prolonge jusqu'au début de la grille de transport (1).
  18. Refroidisseur selon la revendication 16 ou 17, caractérisé par le fait que le transporteur (8) traverse, après avoir quitté la surface de grille (7) dans la zone de son renvoi (13), un canal d'étanchéité entre une paroi (50) se raccordant du côté intérieur à la surface de grille et une paroi (51) extérieure, qui forment dans leur continuation (52), le transporteur à chaíne avec le brin inférieur (11).
EP99121757A 1999-11-03 1999-11-03 Procédé pour refroidir du clinker et refroidisseur de clinker Expired - Lifetime EP1098155B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE59910759T DE59910759D1 (de) 1999-11-03 1999-11-03 Verfahren zum Betrieb eines Brenngutkühlers sowie Brenngutkühler
EP99121757A EP1098155B1 (fr) 1999-11-03 1999-11-03 Procédé pour refroidir du clinker et refroidisseur de clinker
AT99121757T ATE278924T1 (de) 1999-11-03 1999-11-03 Verfahren zum betrieb eines brenngutkühlers sowie brenngutkühler
JP2000334671A JP2001208484A (ja) 1999-11-03 2000-11-01 焼成生成物のためのクーラ
US09/703,555 US6312252B1 (en) 1999-11-03 2000-11-01 Cooler for combustion products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99121757A EP1098155B1 (fr) 1999-11-03 1999-11-03 Procédé pour refroidir du clinker et refroidisseur de clinker

Publications (2)

Publication Number Publication Date
EP1098155A1 EP1098155A1 (fr) 2001-05-09
EP1098155B1 true EP1098155B1 (fr) 2004-10-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99121757A Expired - Lifetime EP1098155B1 (fr) 1999-11-03 1999-11-03 Procédé pour refroidir du clinker et refroidisseur de clinker

Country Status (5)

Country Link
US (1) US6312252B1 (fr)
EP (1) EP1098155B1 (fr)
JP (1) JP2001208484A (fr)
AT (1) ATE278924T1 (fr)
DE (1) DE59910759D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20020353A1 (it) * 2002-02-21 2003-08-21 Magaldi Ricerche & Brevetti Estrattore/raffreddatore di materiali sfusi mediante l'utilizzo di unmezzo di nastro trasportatore dotato di piastre forate e provviste di
JP5866196B2 (ja) 2011-12-26 2016-02-17 川崎重工業株式会社 バルク材冷却装置及びバルク材冷却方法
KR101325288B1 (ko) * 2012-07-11 2013-11-05 주식회사 포스코 소결층 통기장치
CN106475180A (zh) 2015-08-31 2017-03-08 川崎重工业株式会社 冷却装置的辊式破碎机

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1108606B (de) * 1959-05-06 1961-06-08 Polysius Gmbh Leitvorrichtung zum UEberleiten von gebranntem Gut, insbesondere Zementklinker, aus einem Ofen, z. B. Drehrohrofen, auf einen beweglichen Rostkuehler
DE1160354B (de) * 1960-12-01 1963-12-27 Knapsack Ag Vorrichtung zur UEberleitung von Sintergut von einem Sinterrost auf einen Kuehlrost
US3089688A (en) * 1961-03-06 1963-05-14 Dundee Cement Co Cement manufacture
DE1953415B2 (de) * 1969-10-23 1974-03-07 Polysius Ag, 4723 Neubeckum Wanderrost zum Kühlen von heißem Gut
DE3131514C1 (de) * 1981-08-08 1988-09-08 Karl von Dipl.-Ing. Dipl.-Wirtsch.-Ing. 3057 Neustadt Wedel Verfahren zum Kuehlen von Kuehlgutbetten und Stauvorrichtung zur Durchfuehrung des Verfahrens
DE3238872A1 (de) * 1982-10-18 1984-04-19 Karl von Dipl.-Ing. Dipl.-Wirtsch.-Ing. 3057 Neustadt Wedel Verfahren zum kuehlen von schuettguetern wie zementklinker und vorrichtung zur durchfuehrung des verfahrens
US4503783A (en) * 1983-07-11 1985-03-12 General Kinematics Corporation Furnace ash air seal
DE3538059A1 (de) * 1985-10-25 1987-04-30 Krupp Polysius Ag Vorrichtung zum kuehlen von heissem gut
DE3616630A1 (de) * 1986-05-16 1987-11-19 Krupp Polysius Ag Kuehlvorrichtung
AU612058B2 (en) * 1988-09-13 1991-06-27 Nkk Corporation Apparatus for charging material to be sintered into a sintering machine
DK154692D0 (da) 1992-12-23 1992-12-23 Smidth & Co As F L Fremgangsmaade og koeler til afkoeling af partikelformet materiale
DE19504311A1 (de) * 1995-02-09 1996-08-14 Krupp Polysius Ag Zweischichtkühler
JPH08261420A (ja) * 1995-03-27 1996-10-11 Shigeru Saito 礫床炉

Also Published As

Publication number Publication date
DE59910759D1 (de) 2004-11-11
JP2001208484A (ja) 2001-08-03
ATE278924T1 (de) 2004-10-15
US6312252B1 (en) 2001-11-06
EP1098155A1 (fr) 2001-05-09

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