EP1129220B1 - Dispositif de repartition de matieres en vrac - Google Patents

Dispositif de repartition de matieres en vrac Download PDF

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Publication number
EP1129220B1
EP1129220B1 EP99952492A EP99952492A EP1129220B1 EP 1129220 B1 EP1129220 B1 EP 1129220B1 EP 99952492 A EP99952492 A EP 99952492A EP 99952492 A EP99952492 A EP 99952492A EP 1129220 B1 EP1129220 B1 EP 1129220B1
Authority
EP
European Patent Office
Prior art keywords
chute
hydraulic
rotor
sleeve
rotary
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
EP99952492A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1129220A1 (fr
Inventor
Emile Lonardi
Giovanni Cimenti
Jean-Jacques Venturini
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.)
Paul Wurth SA
Original Assignee
Paul Wurth 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 Paul Wurth SA filed Critical Paul Wurth SA
Publication of EP1129220A1 publication Critical patent/EP1129220A1/fr
Application granted granted Critical
Publication of EP1129220B1 publication Critical patent/EP1129220B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden

Definitions

  • the present invention relates to a device for distributing materials in bulk with rotating chute with variable tilt angle.
  • Such devices are for example used in loading devices tank furnaces, in particular blast furnaces, in which the rotating chute with variable tilt angle ensures load distribution inside the shaft oven.
  • They more particularly include a carcass support in which a suspension rotor is mounted so that it can be rotated about a substantially vertical axis of rotation.
  • the chute is suspended in this rotor so that it can be pivoted by a pivoting mechanism around its suspension axis. This mechanism of pivoting allows you to change the inclination of the chute during its rotation.
  • the rotor is axially traversed by a feed channel, so that bulk materials, which flow from a lock hopper of the loading, are discharged on the rotating chute, which distributes them inside from the shaft oven.
  • the swivel mechanism includes a second rotor, which has an axis of rotation substantially coaxial with the first rotor in which the chute is suspended. While the first rotor essentially rotates the chute around a vertical axis, the second rotor interacts with the chute so as to determine the angle of inclination thereof.
  • the second rotor is connected to the chute by a mechanism transforming a variation of the angular offset between the two rotors in a variation of the angle of inclination of the chute in its vertical pivot plane.
  • One of the problems underlying the present invention is to provide a bulk material distribution device with rotating angle chute of variable inclination, in which simpler means are used to change the inclination of the rotating chute and which nevertheless guarantees a reliable operation.
  • Such a device comprises in a manner known per se a suspension rotor mounted in a support frame so that it can rotate about an axis of rotation substantially vertical.
  • the chute is suspended from this suspension rotor of so as to be able to pivot around a substantially horizontal suspension axis.
  • the suspension rotor is axially traversed by a supply channel of the chute.
  • This pivoting mechanism includes a hydraulic motor, by example a hydraulic cylinder, which is mounted on the suspension rotor and connected to the chute so that it can rotate around its axis of suspension.
  • a device for annular hydraulic connection is used to connect this hydraulic motor to a hydraulic control circuit.
  • This hydraulic connection device comprises more particularly a sleeve which is immobile in rotation and a sleeve rotary driven in rotation by the rotor.
  • the feed channel of the chute axially passes through these two sleeves, which cooperate to connect the hydraulic motor rotated by the rotor to a hydraulic circuit of motionless control in rotation.
  • the annular hydraulic connection device is preferably arranged above the support frame, which is designed as a waterproof case passed through tightly or almost tightly by the upper end of the rotor. This assembly allows easier maintenance and removes the device from connection to the unfavorable atmosphere (heat, aggressive fumes, vapors, dust) which may prevail inside the support frame.
  • the rotary sleeve is supported by the rotor, and the stationary sleeve in rotation is supported by the rotary sleeve.
  • Rolling means comprising for example two bearing rings, can in this case support the sleeve immobile in rotation on the rotary sleeve.
  • a compensator flexible ring allows to connect the immobile sleeve in rotation of tight to the support frame, while allowing the sleeve stationary in rotation small movements relative to the carcass of support. It will in particular be appreciated that such a hydraulic connection device annular is relatively insensitive to shocks absorbed by the rotor.
  • the sleeve immobile in rotation is flexibly supported by said carcass support and the rotating sleeve is supported by the stationary sleeve in rotation.
  • the sleeve is immobile in rotation and the sleeve preferably have an adjustment designed so that a fluid hydraulic pressure injected between the two provides self-centering of the rotating sleeve in the rotating immobile sleeve.
  • the hydraulic connection device comprises by example of superimposed feed grooves.
  • drain means are arranged above, respectively below of these feed grooves, so as to collect the leakage rate of the adjacent feed groove. This leak rate can then be used to supply at least one integral cooling circuit in rotation with the suspension rotor.
  • the rotary sleeve advantageously comprises a hydraulic circuit communicating with the drain means and supplying at least one cooling circuit.
  • a tubular screen motionless in rotation and equipped with a cooling circuit, is advantageously interposed between the supply channel and the annular rotary coupling device.
  • This tubular screen is preferably supported by an outer wall of the support carcass, so as to form with this outer wall an annular chamber in which is housed the annular connection.
  • the support carcass is provided at its end bottom of a fixed annular screen fitted with a cooling circuit and defining a circular central opening.
  • the suspension rotor is then fitted with a collar at its lower end. The latter is adjusted with clearance in the central opening of the fixed annular screen and has cavities opening into its lateral edge.
  • a gas injection pipe is arranged along the free edge of the fixed annular screen, so that it can inject cooling gas into the cavities of the suspension rotor collar.
  • FIG. 1 shows schematically a loading installation a shaft furnace 10.
  • This installation is provided with a distribution device bulk material 12 with a rotating chute 14 with tilt angle variable.
  • a distribution device 12 Above the distribution device 12 is arranged a hopper lock 16, which is supported using a support structure 18 on the shaft furnace 10.
  • the hopper 16 opens into a feed channel 20.
  • the reference sign 21 indicates the central axis of the supply channel 20, which will be usually coaxial with the central axis of the shaft furnace 10.
  • the chute 14 is shown in two positions. In lines full it is shown in an almost vertical position, in which it is not operational. Bulk material is indeed discharged through the channel 20 in the central zone of the shaft furnace 10. In dotted lines the chute 14 is shown in an oblique position. In this position, the channel feed 20 pours the bulk material onto the rotary chute 14, which ensures the distribution inside the tank furnace 10 as a function of its inclination.
  • the bulk distribution device 12 will now be studied in more detail by referring simultaneously to Figures 1 and 2.
  • the chute 14 is provided at its upper end with two lateral suspension arms 19, 19 '(in Figure 1, the arm 19' is hidden by the arm 19).
  • a suspension rotor 22 supports two suspension bearings 24, 26.
  • a suspension pin 28 fixing a suspension arm of the chute 14 in the bearing 26.
  • the other arm of suspension is obviously fixed in the same way in bearing 24.
  • a bearing of large diameter 32 which is mounted on a support collar 30 of the rotor 22, suspends the rotor 22 in a support frame 34, so that the rotor 22 can rotate freely around the axis 21.
  • An electric motor or hydraulic 36 preferably a variable speed motor, is used to rotate the rotor 22, and therefore also the chute 14, around the axis 21.
  • a pinion 38 of the drive motor 36 meshes with a ring gear 40 carried by the support collar 30.
  • the carcass 34 which is designed as a waterproof case, is supported itself on the head of the shaft furnace 10 and has at its upper end a plate 42, which is provided with a passage opening 44 for the end upper part of the rotor 22. It will be noted that the support collar 30 and the ring of bearing 32 close inward of the support frame 34 a space annular 45, which is delimited by the tubular wall of the rotor 22 in the opening passage 44 of the plate 42, in a sealed or almost sealed manner.
  • annular screen 46 At its lower end the carcass 34 is provided with an annular screen 46.
  • the latter is equipped with a cooling circuit 48 on its surface upper and insulation 50 on its lower surface.
  • the annular screen 46 defines a central opening 52 in which a screen collar 54 is adjusted equipping the lower end of the suspension rotor 22.
  • the screen collar 54 of the rotor 22 comprises an upper plate 56, which is protected downwards by an insulation 58. Between the upper plate 56 and the insulation 58 a vacuum remains 60 accessible from the lateral edge of the screen collar 54.
  • a pipe 62 is arranged along the free edge of the annular screen 46. This pipe 62 is connected to a source of cooling gas and is provided throughout length of outlet ports oriented so that this gas can be injected cooling through in the vacuum 60 of the screen collar 54.
  • the chute 14 comprises at its upper end a pivot arm 63.
  • a hydraulic cylinder 64 is connected from articulated between the pivot arm 63 and a fixed arm 66 forming part of the bearing 26. By actuating this cylinder 64, the chute 14 is pivoted in its bearings 24, 26.
  • the hydraulic cylinder 64 is supplied with a fluid hydraulic under pressure using an annular rotary coupling device surrounding the supply channel 20 of the chute 14.
  • This rotary connector 68 comprises a stationary sleeve in rotation 70 and a rotary sleeve 72 rotated by the rotor 22.
  • the rotary sleeve 72 is formed by an extension of the tube forming the rotor 22 above the plate 42.
  • the stationary sleeve in rotation 70 is supported by the rotary sleeve 72 using two rings 74 and 76.
  • a flexible annular compensator 78 connects the sleeve 70 to plate 42 of the support carcass 34.
  • This compensator 78 immobilizes the sleeve 70 in rotation and contributes to the sealed closure of the annular space 45, while allowing slight movements of the sleeve relative to the support frame 34. It remains to be noted that the injection of a gas under pressure in the annular space 45 prevents penetration of fumes through the bearing 32 in the annular space 45.
  • the device rotary connector 68 is therefore sheltered from the unfavorable atmosphere (heat, aggressive fumes and vapors, dust) which can still reign inside of the support frame 34, despite the screens 46 and 54 provided at the end bottom of the support frame 34.
  • Flexible pipes represented schematically by their lines axes 80 ', 82', connect the immobile sleeve 70 in rotation using these connections 80, 82 to a hydraulic motionless control circuit, represented schematically by block 79.
  • This circuit 79 can be a circuit hydraulic conventionally used for controlling a double piston action. Opposite arrows and the letters P and T indicate that the circuit hydraulic 79 can connect connections 80 and 82 alternately to a pressure source P or to a reservoir T.
  • Connection 80 opens into a groove 84 and connection 82 into a groove 86, which are both machined in a radial direction in the inner cylindrical surface of the sleeve 70. (They could however also be machined in the outer cylindrical surface of the sleeve 72.)
  • the sign reference 88 marks a first hydraulic fluid supply channel in the rotor 22. This channel 88 has a mouth 90 in the surface cylindrical outer sleeve 72 at the groove 84. A second channel 92 similarly has a mouth 94 at the level of the grooved 86. It follows that each of the channels 88, 92 in the rotary sleeve 72 is permanently in hydraulic communication with the groove corresponding 84, 86 in the immobile rotating sleeve 70.
  • connection 80, 82, the grooves 84, 86, the mouths 90, 94 and channels 88, 92 it is possible to supply a device in closed circuit hydraulic on rotor 22 with hydraulic fluid under pressure.
  • flexible pipes 96, 98 which connect the channels 88, 92 to the hydraulic cylinder 64.
  • each of the grooves 84, 86 is bordered sealing rings 100.
  • the latter cannot guarantee perfect seal between the immobile rotating sleeve 70 and the sleeve rotary 72, so that an axial leakage rate is established between the two sleeves 70 and 72.
  • this axial leakage rate is advantageously used to lubricate the bearings 74 and 76.
  • a third groove 102 is arranged between the two grooves 84, 86. This groove 102 is used to collect the leakage rate between the two grooves 84, 86, to evacuate it through a channel 104 in a lubrication chamber 106 of the bearing 76.
  • This chamber 106 also receives the leakage rate passing through the sealing ring 100 arranged below the groove 84. After lubricating the bearing 76, the flow of axial leak collected in the chamber 106 passes through a channel 108 in a lubrication chamber 110 of bearing 74. This chamber 110 also receives the leakage rate passing through the sealing ring 100 arranged above the bleed 86. After lubricating the bearing 74, the leakage rate is finally evacuated through a channel 112 outside of the rotary connector 68.
  • a sealing collar 114, 116 fixed on the immovable sleeve in rotation 70, provides a certain seal between the immobile rotating sleeve 70 and the rotary sleeve 72 above the upper bearing 74 (with regard to the sealing collar 114), respectively below the lower bearing 76 (with regard to the sealing collar 116).
  • the reference sign 120 globally identifies a stationary screen in rotation equipped with a closed cooling circuit 122.
  • This cooling screen 120 is mounted in an annular space remaining between the sleeve 72 of the rotary union 68 and a fixed wear tube 123, which forms the supply channel 20. It is used in particular to cool the interior surface of the rotor 22.
  • the arrows 124 symbolize a coolant passing through the closed cooling circuit 122.
  • the cooling sleeve 120 and the wear tube 123 are both supported by the immobile sleeve in rotation 70.
  • a compensator 126 which is best seen in Figures 1 and 2, connects the feed channel 20 tightly to the lock hopper 16.
  • FIG. 268 A second embodiment of an annular rotary connector will be described using Figures 6 to 8.
  • This rotary connector 268 comprises a stationary sleeve in rotation 270 and a rotary sleeve 272 rotated by a rotor suspension 222, which is the equivalent of suspension rotor 22.
  • the end upper part of rotor 222 is only slightly protruding from the upper plate 42 of the carcass 34.
  • the rotary sleeve 272 is arranged above of this upper end of the rotor 222 and coupled to it by 273 keys (see Figure 7).
  • the non-rotating rotating sleeve 270 is flexibly supported on the plate 42 by means of elastic supports 278.
  • the rotary sleeve 272 is supported in the stationary rotating sleeve 270 via of thrust bearings 274, 276, which for example cooperate with a flange 277 of the rotary sleeve 272.
  • the reference sign 279 identifies one of at least two connections which allow connect the rotary connector 268 to a hydraulic circuit (not shown).
  • This connector 279 sealingly passes through a fixed wall 281 which surrounds the rotary connector 268. It can be seen that the connector 279 is designed so as not to hinder small movements of the sleeve 270 on its elastic bases 278.
  • a connection channel 280 connects the first fitting 279 to a groove 284.
  • the grooves 284 and 286 are both machined in a radial direction in the inner cylindrical surface of the sleeve 270.
  • the reference sign 288 identifies a supply channel for hydraulic fluid in the rotor 222.
  • This channel 288 has a mouth 290 in the outer cylindrical surface of the sleeve 272 at the level of the groove 284.
  • a second channel 292 located outside the cutting plane similarly has a mouth 294 at the groove 286. It follows that each of the channels 288, 292 is permanently in hydraulic communication with the corresponding groove 284, 286 in the sleeve immobile in rotation 270.
  • each of the channels 288, 292 is connected through a flexible pipe to a distribution channel 288 ', 292 'arranged in the rotor 222.
  • a distribution channel 288 ', 292 ' is shown in Figure 8. It will be noted that it runs along the joint between the sleeve rotary 272 and rotor 222 over a certain distance, in order to present a more great deformable length, therefore better flexibility to compensate for relative movements between the rotary sleeve 272 and the rotor 222.
  • connection channels 280, 282, grooves 284, 286, mouthpieces 290, 294, channels 288, 292, flexible lines 293 and channels distribution 288 ', 292' it is possible to supply with hydraulic fluid under pressure, in a closed circuit, a hydraulic member integral in rotation with rotor 222.
  • the rotary sleeve 272 comprises by example of the drain means 295, 297, which are arranged above, respectively below the two grooves 284, 286, so as to collect the flow leakage from the adjacent feed groove 284, 286.
  • These drain means 295, 297 open into a drain channel 299 arranged in the sleeve rotary 272.
  • the drain channel 299 is connected through a flexible pipe (see for example Figure 8) to a distribution channel 299 ', arranged in the rotor 222.
  • This distribution channel 299 ' enables a rotating cooling circuit to be supplied with the rotor 222 with the hydraulic leakage rate as cooling fluid.
  • the reference sign 301 identifies a return channel of this cooling fluid in the rotary sleeve 272, which is connected as described more high to a return channel of the integral cooling circuit in rotation with the rotor 222.
  • the return channel has a mouth 303 at a groove 305 machined in the radial direction in the inner cylindrical surface of the sleeve 270.
  • This groove 305 is bordered by sealing rings 307 and it opens into a discharge channel 306 of the leakage rate in a tank (not shown). It should be noted that part of the leakage rate is advantageously used to lubricate the thrust bearing 274, while the bearing stopper 276 has a separate lubrication system.
  • the reference sign 320 globally identifies a stationary screen in rotation equipped with a cooling circuit 322.
  • This stationary screen in rotation 320 is the equivalent of the motionless rotating screen 120 in Figure 3. It is supported, together with a wear tube 323 defining the supply channel 20, by the fixed wall 281 and forms with the latter a chamber ring 325 in which the rotary connector 268 is housed. especially the advantage that blows and vibrations absorbed by the wear tube 323 during the passage of the loading material in the channel 20 are not transmitted to rotary connector 268.
  • FIGS. 4 and 5 are used to illustrate a tilt indication device of the chute which can advantageously be used in a device for distribution of bulk materials with rotating chute with tilt angle variable.
  • the reference sign 350 marks a substantially horizontal ring mounted on the suspension rotor 22 so that it can slide vertically along the latter.
  • the ring 350 is for example provided with rods of guide 352, 354, which are received in slides 356, 358 carried by the rotor 22.
  • a connection mechanism connects this ring 350 to the chute 14, so that a pivoting of the chute 14 causes a displacement vertical ring 350.11 follows that the vertical position of ring 350 is function of the inclination of the chute 14.
  • the reference sign 360 reference mark overall a 360 position detector, which is mounted on the top plate 42 of the support frame 34 to detect the vertical position of the ring 350.
  • This detector 360 is for example provided with a detection rod 362 which enters the carcass 34 so as to be able to bear with its front end on the ring 350 rotating with the rotor 22.
  • a spring 364 ensures permanent contact between the front end of the rod 362 and the ring 350 in rotation. It follows that the length of the rear end 366 of the rod 362 coming out of the support frame 34 is a true picture of the position vertical of the ring 350 and therefore of the inclination of the chute 14.
  • connection mechanism that connects the ring 350 to the chute 14 comprises on each suspension arm 19.19 'of the chute 14 a pair of toothed segments 372, 374 which mesh. Toothed segment 372 is fixed to the chute so that its axis coincides with the axis of pivoting thereof. The toothed segment 374 is mounted on the rotor 22 so able to rotate freely around an axis parallel to the pivot axis of the chute 14. Each toothed segment 372, 374 is connected using a rod articulated 376, 378 to the ring 350. It will be appreciated that this mechanism ensures parallel movement of the ring 350 when the chute 14 pivots around of its pivot axis.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Joints Allowing Movement (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Glass Compositions (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Discharge Of Articles From Conveyors (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP99952492A 1998-10-06 1999-10-05 Dispositif de repartition de matieres en vrac Expired - Lifetime EP1129220B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
LU90294A LU90294B1 (fr) 1998-10-06 1998-10-06 Dispositif de répartition de matières en vrac
LU90294 1998-10-06
PCT/EP1999/007352 WO2000020646A1 (fr) 1998-10-06 1999-10-05 Dispositif de repartition de matieres en vrac

Publications (2)

Publication Number Publication Date
EP1129220A1 EP1129220A1 (fr) 2001-09-05
EP1129220B1 true EP1129220B1 (fr) 2002-06-05

Family

ID=19731771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99952492A Expired - Lifetime EP1129220B1 (fr) 1998-10-06 1999-10-05 Dispositif de repartition de matieres en vrac

Country Status (10)

Country Link
US (1) US6481946B1 (uk)
EP (1) EP1129220B1 (uk)
CN (1) CN1167928C (uk)
AT (1) ATE218622T1 (uk)
AU (1) AU6467899A (uk)
DE (1) DE69901728T2 (uk)
LU (1) LU90294B1 (uk)
RU (1) RU2224799C2 (uk)
UA (1) UA68399C2 (uk)
WO (1) WO2000020646A1 (uk)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE304496T1 (de) * 1999-12-16 2005-09-15 Legno Ag Austrags- und dosiervorrichtung für schüttgüter
DE10334417A1 (de) * 2003-06-20 2005-01-05 Z & J Technologies Gmbh Ofenkopf bzw. Gichtverschluß
EP1935993A1 (en) * 2006-12-18 2008-06-25 Paul Wurth S.A. A rotary charging device for a shaft furnace
LU91511B1 (en) * 2009-01-14 2010-07-15 Wurth Paul Sa Lower sealing valve unit for a blast furnace top charging system
LU91601B1 (en) * 2009-08-26 2012-09-13 Wurth Paul Sa Shaft furnace charging device equipped with a cooling system and annular swivel joint therefore
LU91645B1 (en) 2010-01-27 2011-07-28 Wurth Paul Sa A charging device for a metallurgical reactor
LU91717B1 (en) * 2010-08-06 2012-02-07 Wurth Paul Sa Distribution device for use in a charging installation of a metallurgical reactor
US20120148373A1 (en) * 2010-12-13 2012-06-14 Woodings Industrial Corporation Hydraulic distributor for top charging a blast furnace
WO2013013972A2 (en) * 2011-07-22 2013-01-31 Paul Wurth S.A. Rotary charging device for shaft furnace
LU91845B1 (en) * 2011-07-22 2013-01-23 Wurth Paul Sa Rotary charging device for shaft furnace
RU2560069C2 (ru) * 2013-09-13 2015-08-20 Открытое акционерное общество "Союзцветметавтоматика" Устройство автоматического дозирования и затаривания пробы сыпучих продуктов в контейнер пневмопочты
LU92469B1 (en) * 2014-06-06 2015-12-07 Wurth Paul Sa Gearbox assembly for a charging installation of a metallurgical reactor
LU92471B1 (en) * 2014-06-06 2015-12-07 Wurth Paul Sa Charging installation of a metallurgical reactor
LU92581B1 (fr) * 2014-10-22 2016-04-25 Wurth Paul Sa Dispositif de refroidissement des tourillons de support d'une goulotte de distribution d'un four à cuve
DE102017118867B4 (de) * 2017-08-18 2020-12-10 Zeppelin Systems Gmbh Verladekopf eines pneumatischen Verladesystems für Schüttgüter
CN112899134B (zh) * 2021-03-10 2022-09-02 普瑞特机械制造股份有限公司 干曲块落料装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5111014B2 (uk) * 1973-01-31 1976-04-08
LU80112A1 (uk) * 1978-08-16 1979-01-19
LU82173A1 (fr) * 1980-02-15 1980-05-07 Wurth Sa O Dispositif de chargement pour fours a cuve
LU84521A1 (fr) * 1982-12-10 1984-10-22 Wurth Paul Sa Dispositif de refroidissement d'une installation de chargement d'un four a cuve
FR2692595A1 (fr) * 1992-06-22 1993-12-24 Int Equipement Dispositif d'alimentation pour haut-fourneau.
DE19709329C2 (de) * 1997-03-07 2001-03-08 Sms Demag Ag Glockenloser Gichtverschluß für Schachtöfen, insbesondere Hochöfen

Also Published As

Publication number Publication date
RU2224799C2 (ru) 2004-02-27
LU90294B1 (fr) 2000-04-07
DE69901728T2 (de) 2002-11-21
AU6467899A (en) 2000-04-26
UA68399C2 (en) 2004-08-16
US6481946B1 (en) 2002-11-19
WO2000020646A1 (fr) 2000-04-13
CN1167928C (zh) 2004-09-22
DE69901728D1 (de) 2002-07-11
CN1250148A (zh) 2000-04-12
ATE218622T1 (de) 2002-06-15
EP1129220A1 (fr) 2001-09-05

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