EP0062770B1 - Installation de chargement d'un four à cuve - Google Patents

Installation de chargement d'un four à cuve Download PDF

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Publication number
EP0062770B1
EP0062770B1 EP82101944A EP82101944A EP0062770B1 EP 0062770 B1 EP0062770 B1 EP 0062770B1 EP 82101944 A EP82101944 A EP 82101944A EP 82101944 A EP82101944 A EP 82101944A EP 0062770 B1 EP0062770 B1 EP 0062770B1
Authority
EP
European Patent Office
Prior art keywords
valve
registers
installation
accordance
axis
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
Application number
EP82101944A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0062770A1 (fr
Inventor
Edouard Legille
Pierre Mailliet
Emile Lonardi
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
Priority to AT82101944T priority Critical patent/ATE15230T1/de
Publication of EP0062770A1 publication Critical patent/EP0062770A1/fr
Application granted granted Critical
Publication of EP0062770B1 publication Critical patent/EP0062770B1/fr
Expired 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
    • 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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B1/20—Arrangements of devices for charging
    • 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
    • F27D3/10—Charging directly from hoppers or shoots
    • 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
    • F27D2003/0001—Positioning the charge
    • F27D2003/0006—Particulate materials
    • F27D2003/0007—Circular distribution

Definitions

  • the present invention relates to a loading installation of a shaft furnace comprising a distribution device with a rotary or oscillating chute, at least one storage enclosure mounted above this chute, and a metering and closing member for adjusting the flow rate of the material to be put in from this enclosure towards the chute.
  • a metering device generally of the type described in patent FR-A-2 175 452 and provided for in the oblique passage connecting the bottom of this enclosure to a vertical supply channel above the chute.
  • the object of the present invention is to provide a new installation for loading a shaft furnace with an axial arrangement of the storage enclosure, as well as a new metering member allowing this arrangement, that is to say capable of adjust the flow rate of a vertically flowing current.
  • the metering member is located in a valve cage and this metering member consists of two caps-shaped registers each having a substantially V-shaped cutout and carried by shafts arranged diametrically and there is provided a drive mechanism for pivoting the two registers in synchronism and in opposite directions, so that the two cutouts combine their effects to determine and vary the flow section so that it constantly evolves symmetrically around the central axis.
  • said storage enclosure is an airlock comprising an upper sealing valve and a lower sealing valve, both in the shape of a cap, the lower valve also being provided in the valve cage, said enclosure being surmounted by a holding hopper also mounted on the vertical axis and provided with a material retaining valve.
  • said storage enclosure is surmounted by an airlock equipped with an upper sealing valve and a lower sealing valve, both in the shape of a cap, as well as a material retention.
  • the check valve fitted, in the two embodiments, the bottom of the upper tank, whether the latter acts as a holding hopper or airlock, will preferably also be in the form of a register of single or double spherical shape, analogous to the metering member, except that it does not need to include a cutout.
  • This check valve, as well as the section of the opening with which it is associated, will preferably be as large as possible. In fact, by providing a large flow opening at the bottom of this tank, it is ensured that the transfer of its contents to the storage enclosure takes place, if not instantaneously, at least in a few seconds. By accelerating in this way the filling phase of the storage enclosure, the total duration of a loading cycle will not be much longer than that of installations with two juxtaposed airlocks working alternately.
  • both the registers of the metering members or the retaining valves and the sealing valves are in the form of a spherical cap and the pivot axis of the sealing valves is located approximately at the same level than the pivot axis of the registers of the metering or retaining members with which they are associated. This allows the sealing valves to be brought closer to the registers of the metering or retaining members, in comparison with conventional pivoting valves which require more space for operate. This design therefore clearly allows a total reduction in height.
  • valves Another advantage of this design of valves is that these can be combined in valve cages with reduced volume and which are removable as a unit, by lateral translation, without dismantling the valves and in a single operation.
  • the registers are supported on one side by a single shaft and on the opposite side, by two shafts arranged one coaxially with respect to the other and housed in bearings to actuate, by pivoting about their longitudinal axes respectively, both registers.
  • the register drive mechanism consists, according to a first embodiment, of a sliding fork, movable in a direction perpendicular to the pivot axis of the registers, and provided with two rows of gears respectively forming rack with two toothed sectors respectively integral with the two coaxial shafts for actuating the registers.
  • the drive mechanism comprises, according to a second embodiment, a rotary shaft arranged perpendicularly to the pivot axis of the registers and driven by a motor, by means of a worm and a wheel endless screw, and carrying two bevel gears arranged on either side of the pivot axis and cooperating respectively with two sectors with conical teeth respectively integral with each of the coaxial shafts to actuate the registers.
  • FIGS 1 and 2 schematically show the upper part of a shaft furnace 20 in which is suspended a rotary or oscillating chute 22 to ensure the distribution of the loading material discharged into the furnace.
  • This chute 22 is actuated by an appropriate mechanism housed, in the embodiment shown, in a housing designated by 24 and intended to communicate to the chute 22 the desired movement.
  • a central channel 26 guides the material to be put into the chute 22.
  • a storage enclosure 28 designed as an airlock and provided for this purpose with a lower sealing valve 36 and an upper sealing valve 44, is mounted above the oven 20.
  • a valve cage 30 containing, in addition to the lower sealing valve 36, a metering member 34 intended to regulate the flow of the loading material through a drain pipe 38 forming the bottom of the airlock 28.
  • the airlock 28 is mounted around the central axis 0 of the furnace, as is the flow pipe 38 and the metering member 34.
  • the material to be put in therefore falls , depending on the position of the metering member 34, directly from the airlock 28 and this, symmetrically with respect to the axis 0, on the chute 22.
  • the flow of material from the airlock 28 is therefore always the same manner and the problems of asymmetry of distribution as a result of an oblique and offset movement of the loading material no longer exist.
  • the metering that is to say the control of the metering member 34 to regulate the flow, is carried out according to the loading requirements and according to the content in the airlock 28.
  • this airlock 28 is weighed permanently or periodically to determine its content.
  • the valve cage includes a peripheral compensator 32 to separate the airlock 28 from the oven 20.
  • the weighing is carried out. by means of several, preferably three load cells 40 on which the airlock rests, the load cells being, in turn, carried by fixed uprights 42 forming part of the frame or superstructure.
  • a waiting hopper 46 intended to be filled while the airlock 28 is emptied.
  • a check valve 48 provided at the bottom of a flow pipe 52 of this hopper makes it possible to establish communication between this hopper 46 and the airlock 28 when the sealing valve 44 is open.
  • the section of the flow pipe 52 is preferably as large as possible.
  • the hopper 46 rests on beams 50 forming part of the superstructure not shown.
  • the upper reservoir designed in the form of an airlock 58 and provided, for this purpose, with an upper sealing valve 62 and a lower sealing valve 64, is mounted at the above the storage enclosure 60 which, according to the present invention, is also arranged along the axis 0 of the furnace and which is provided with a flow pipe 66.
  • the flow adjustment by this pipe 66 is produced using a metering member 68 identical to the metering member 34 of the previous embodiment and also mounted in a valve cage designated by the reference 80.
  • the storage enclosure 60 is also designed in the form of a weighing hopper and rests, for this purpose, on several fixed load cells 72 supported by the superstructure 74. To allow the weighing of the enclosure 60 , this is isolated from the furnace by a compensator 70, and from the airlock 58 by a second compensator 76. If the cross section of the compensator 76 is equal to that of the compensator 70, the upward force due to the back pressure in the furnace has no effect on the results of the weighing and, therefore, it is not necessary to pre-stress the load cells 72, the metering member 68 not being tight against the back pressure.
  • the airlock 58 rests on the superstructure schematically designated by the beams 84
  • the communication between the airlock 58 and the enclosure 60 is carried out, by means of a check valve 78, when the sealing valve 64 is open.
  • This check valve 78 may be analogous to the metering member 68, that is to say be composed of two complementary registers, without cutouts, since there is no metering function. This has the advantage of a symmetrical and vertical flow of the airlock 58. It is, of course, possible to design this check valve 78 in the form of a simple valve, as shown by 48, in FIG. 1. Vice -versa, the latter can be designed as a double valve like the valve 78 of Figure 2.
  • valve cage 82 In the second embodiment, the upper valves 64, 78 are located in a valve cage 82. This cage is removable and can be released laterally, as a unit, with the valves. The same is true of the lower valve cages 30 and 80 which are also removable and can be removed laterally with the valves and the flow pipes 38 and 66.
  • valve cages will moreover be described in more detail with reference to FIGS. 3 and 4.
  • Another advantage common to the two embodiments is obtained by harmonizing the shapes of the sealing valves and of the metering members. Indeed, as the shapes of the registers forming the metering members correspond to the shapes of the sealing valves and that the axes of rotation of one and the other are approximately at the same level, they allow a very compact construction of the valve cages.
  • FIGS 3 and 4 show a more detailed view of the valve cage 30.
  • the metering member 34 consists of two registers 86, 88 with concentric spherical curvature whose center of curvature is located at the intersection of their axis of pivoting, represented by X and the central axis of the furnace 0. These two registers 86, 88 are carried on one side by the same pivoting shaft 90 which is sealed in a bearing in the wall 92 of the cage 30.
  • the upper register 86 is carried by a shaft 94 passing coaxially through a hollow shaft 96 carrying the lower register 88.
  • the two shafts 94 and 96 can rotate one relative to the 'other and relative to the wall 92 of the cage and there are provided suitable bearings to allow these rotations, as well as seals, known per se, to provide the necessary seal.
  • the single pivot shaft 90 supporting on one side the two registers 86, 88 is not visible in FIG. 4, given that this is not a diametrical section, but a section along the broken line IV-IV, in order to be able to illustrate in FIG. 4 the sealing valve 36.
  • This valve 36 is applied, in the closed position against a seat 98 fixed to the lower part of an intermediate tube 100 surrounding the flow pipe 38.
  • This valve 36 is also in the form of a spherical cap, the center of curvature of which is also located at the intersection of the axes 0 and X, the axis of rotation Y of the valve 36 however making a predetermined angle with l 'axis of rotation X of the member 34. This angle between the axes X and Y results from the need to provide the space necessary for the movement of the different parts and to avoid striking the shaft 90.
  • the sealing valve 36 is supported in the wall 92 of the cage 30 by support and drive means, described in more detail below, to pivot the valve 36 around the Y axis, that is that is, to bring it from the closed position in FIG. 4 to a garage position in which it is raised in the annular space formed between the intermediate tube 100 and the wall 92 of the cage 30.
  • the registers 86 and 88 are also driven by suitable means, described in more detail below, to turn them in opposite directions and in synchronism around the X axis and to bring them from the closed position according to FIG. 4 to an open position in which they occupy the annular space between the two pipes 38 and 100 and vice versa.
  • the operation of these registers 86 and 88 will moreover be the subject of the description which follows, with reference to FIGS. 5 to 8.
  • Figures 5 and 6 first show the two registers 86 and 88 in the closed position.
  • the two registers 86, 88 have the shape of a spherical cap in each of which is provided a cutout 86a and 88a respectively.
  • These cutouts 86a and 88a are substantially in the shape of a "V" and are symmetrical with respect to the same diametral plane.
  • these cut-outs must be located on the side which constitutes the leading side when the register enters the stream of material flowing through the tubing 38 and must not be deeper. as the radius of the tubing 38, this in order to allow the complete closure of the latter. In fact, as shown in FIGS.
  • the cutout 86a of the register 86 is completely doubled by the solid part of the register 88, while the cutout 88a of the latter is completely covered by the solid part of the register 86.
  • each of these cutouts diverges from the central region towards the edge of the valve.
  • the two sides which delimit each of these cutouts extend, seen in plan, in a straight line. They can, for example, be slightly curved relative to the opening of the cutout, this in order to determine the geometric shape of the flow opening during opening.
  • FIGS. 7 and 8 The evolution of this opening is shown in FIGS. 7 and 8.
  • the solid parts of each of the registers 86 and 88 move apart. one from the other, while the cutouts 86a and 88a intersect to determine the opening section which goes from the complete closure according to FIG. 6 to a total opening, not shown, progressively passing through intermediate openings, one of them being represented by the hatched surface 102 in the form of a tile in FIG. 8.
  • the particularity of these two registers is therefore that they provide an increasing or decreasing opening which remains permanently symmetrical with respect to the axis central 0, like the apertures determined by diaphragms. The central and symmetrical flow is therefore guaranteed by this opening.
  • FIGS 9 to 11 schematically show a first embodiment of a mechanism for actuating the two registers symmetrically and in opposite directions.
  • This mechanism is contained in a housing 110 mounted outside the valve cages 30, 80, 82.
  • the essential element of this mechanism is a sliding fork 112 mounted so that it can be moved along its longitudinal axis perpendicular to the trees 94 , 96.
  • the two branches 114 and 116 of this fork each have an inner row of teeth forming a rack respectively with a toothed sector 118 secured to the shaft 94 and a toothed sector 120 secured to the shaft 96.
  • These two sectors 118 and 120 and, consequently, the registers 86 and 88 are rotated synchronously, in opposite directions, in one direction or the other, according to the direction of movement of the fork 112.
  • a third rack consisting of a pinion and a row of teeth provided on the handle 122 of the fork 112.
  • This pinion 124 is integral with a shaft 126 housed in suitable sealed bearings of the housing 110 and driven by a motor not shown by means of a worm gear assembly the worm wheel of which is designated by 128.
  • the reference 130 schematically designates a simulation device and reproducing the movement of the registers for the purpose of monitoring and controlling their operation.
  • the fork 112 can be actuated by other means, such as for example, a hydraulic cylinder, a form of threaded rod, etc.
  • Figures 12 and 13 show a second embodiment of a mechanism for actuating the two registers 86 and 88.
  • the essential element of this mechanism is a drive shaft 140 carrying two bevel gears 142 and 144 located on both sides. other of the extension of the pivot axis X.
  • the pinion 142 forms a gear with a conical toothed sector 146 secured to the shaft 94, while the pinion 144 forms a gear with another conical toothed sector 148 secured to the shaft 96
  • These gears 142-146 and 144-148 being arranged on either side of the axis X of pivoting of the shafts 94 and 96, a rotation of the drive shaft 140 in one direction or the other causes always a rotation between opposite directions, of the shafts 94 and 96.
  • the drive shaft 140 is carried by suitable bearings provided in a wall 150 of a housing, while its movement derives from an external electric motor 152 through a reduction system 154 comprising a worm 156 and a worm wheel
  • Sealing between the inside of a valve cage and the outside can be carried out either between this cage and the box containing the mechanism for actuating the dampers, or between this box and the outside in which case this box is located under a pressure approximately equal to that existing in the oven.
  • FIG. 14 shows a first embodiment for actuating a sealing valve, for example the valve 36.
  • This mechanism essentially comprises a hollow rotary support housed around its axis of rotation Y in a sealed bearing 162 of the wall 92 of the valve cage 30.
  • This support 160 is extended towards the inside of the cage by a yoke 164 comprising a shaft 166 forming a support and pivot axis with an arm 168 whose lower end carries the valve 36 and whose upper end is articulated on a rod 170 undergoing an axial longitudinal movement under the action of an electric, hydraulic or pneumatic motor 172.
  • the support 160 comprises an arm 174 directly connected to a hydraulic cylinder or an endless screw, not shown, for pivoting the support 160 around the Y axis.
  • the complete opening of the valve 36 consists first of all in disengaging the latter from its seat 98 by actuating the motor 172 which displaces the rod 170 to the left in the figure. This movement allows the valve to pivot, under the influence of the motor and its weight, around the shaft 166 and change from the position shown in solid lines to the position in broken lines.
  • the complete release of the valve 36 consists in turning the assembly formed by the valve 36, the bent arm 168 and the support 160 around the axis Y, by acting on the arm 174 by the jack not shown, to place the valve 36 in a garage position located between the pipe 100 and the wall 92 (see Figure 4).
  • the closing of the valve comprises the same operations, in opposite direction, that is to say the rotation of the support 160 around the axis Y followed by a translation, towards the right in FIG. 14, of the rod 170 by the motor 172 for applying the valve 36 against its seat.
  • FIG. 15 shows a second embodiment for actuating the sealing valve 36, in which this valve is removable from its mechanism.
  • This essentially comprises a pivoting support 180 in the form of an “L”, one of the branches 180a of which is housed around its axis of rotation in a sealed bearing 162 provided in the wall 92 of the cage.
  • a hydraulic piston 182 Inside the branch 180a of this support 180 is a hydraulic piston 182 permanently undergoing the action of a helical spring 186 wound around its rod 184 and bearing on an inner rim traversed by this rod.
  • a slide 188 which can slide inside this branch 180b and whose rotation relative to the latter is prevented by keying or a polygonal shape.
  • This slide 188 is connected to the piston rod 184 by a rod 190 articulated both on the slide 188 and on the piston rod 184.
  • the slide 188 is also connected outside the support 180, to an arm 192 carrying the valve 36.
  • the connection between the slide 188 and the arm 192 is removable, which is symbolized by the nut 194, and anti-revolving to avoid relative rotation between the arm 192 and the slide 188.
  • the support 180 is provided, outside the valve cage with an arm 196 actuated directly, for example by a hydraulic cylinder, not shown to pivot the support 180 with the valve 36 around the axis X.
  • a rotary connector represented by 198 makes it possible to subject the piston 182 to the action of a hydraulic fluid under pressure to move the piston 182 and the rod 184 against the action of the spring 186, while allowing rotation of the support. 180 around the axis X.
  • the opening of the valve 36 comprises an initial phase consisting in moving this valve 36 away from its seat 98.
  • the piston 182 is subjected to the action of the pressure of the hydraulic fluid against the action of the spring 186, which moves the rod 184 to the left, until in the position indicated by broken lines.
  • This displacement of the rod 184 allows the sliding of the slide 188 in the branch 180b of the support 180, which allows the valve 36 and the arm 192 to come to occupy the position in broken lines.
  • the arm 196 can be actuated to rotate the support 180 and the valve 36 around the axis X to bring the latter into the garage position.
  • the closure includes the same phases in reverse order, that is to say that the valve is brought from the garage position to the position illustrated in broken lines by the action of the jack not shown on the arm 196.
  • the pressure of the hydraulic fluid on the piston 182 is released, which allows the spring 186 to return the piston 182 to the position indicated in FIG. 15 and to lift, by this movement, the slide 188 and the valve 36 against its seat 98.
  • the force exerted by the spring 186 it is of course necessary for the force exerted by the spring 186 to be greater than the force resulting from the weight of the valve 36, of the arm 192 and of the slide 188.
  • FIG. 16 illustrates a third embodiment of a mechanism for actuating the valve 36.
  • This embodiment is based on the same operating principle as the embodiment of FIG. 15, and consequently comprises similar elements which are represented by the same references as in FIG. 15.
  • a pivoting support 200 in the shape of an "L" is housed, in a sealed manner, in a bearing 162 of the wall 92 and comprises an arm 196 undergoing the action for example of a jack hydraulic, not shown, to turn it around the X axis.
  • this support 200 is a piston 210 which can slide perpendicular to the X axis and undergoes, on the one hand, the action of a spring 202 around its rod 204 and, on the other hand, the action of a hydraulic fluid penetrating through a fitting 198 and an axial pipe 206 in a chamber 208 on the front side of the piston 210.
  • the end of the piston rod 204 is removably connected to arm 192 of the valve pet 36 in the same way as the slide 188 of the embodiment of FIG. 15. Any relative rotation between the arm 192 and the rod 204, on the one hand, and between the rod 204 and the support 200, on the other hand , is prevented by keying or other known means.
  • the first phase of opening the valve 36 therefore consists of sending hydraulic fluid into the chamber 208 to move the piston 210 against the action of the spring 202 and bring the valve 36 down to the position shown in broken lines.
  • the valve 36 can be pivoted in the garage position by pivoting the support 200 around the axis X.
  • a release of the pressure of the hydraulic fluid on the piston 210 allows the spring 202 of the latter to raise the piston and bring the valve against its seat 98 in the position shown in solid lines.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Constitution Of High-Frequency Heating (AREA)
  • Sliding Valves (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Heat Treatment Of Articles (AREA)
EP82101944A 1981-04-03 1982-03-11 Installation de chargement d'un four à cuve Expired EP0062770B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82101944T ATE15230T1 (de) 1981-04-03 1982-03-11 Schachtofenbeschickungsvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU83279A LU83279A1 (fr) 1981-04-03 1981-04-03 Installation de chargement d'un four a cuve
LU83279 1981-04-03

Publications (2)

Publication Number Publication Date
EP0062770A1 EP0062770A1 (fr) 1982-10-20
EP0062770B1 true EP0062770B1 (fr) 1985-08-28

Family

ID=19729623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101944A Expired EP0062770B1 (fr) 1981-04-03 1982-03-11 Installation de chargement d'un four à cuve

Country Status (13)

Country Link
US (1) US4514129A (enrdf_load_stackoverflow)
EP (1) EP0062770B1 (enrdf_load_stackoverflow)
JP (1) JPS57177909A (enrdf_load_stackoverflow)
KR (1) KR890004533B1 (enrdf_load_stackoverflow)
AT (1) ATE15230T1 (enrdf_load_stackoverflow)
BR (1) BR8201964A (enrdf_load_stackoverflow)
CA (1) CA1168442A (enrdf_load_stackoverflow)
CS (1) CS244421B2 (enrdf_load_stackoverflow)
DE (1) DE3265716D1 (enrdf_load_stackoverflow)
IN (1) IN157881B (enrdf_load_stackoverflow)
LU (1) LU83279A1 (enrdf_load_stackoverflow)
SU (1) SU1251811A3 (enrdf_load_stackoverflow)
UA (1) UA7734A1 (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134918A1 (fr) * 1983-06-29 1985-03-27 Paul Wurth S.A. Mécanisme pour actionner un clapet de dosage
EP0252342A1 (fr) * 1986-06-30 1988-01-13 Paul Wurth S.A. Dispositif de fermeture d'une ouverture centrale supérieure d'une enceinte et application à une trémie de stockage d'une installation de chargement d'un four à cuve
FR2613051A1 (fr) * 1987-03-24 1988-09-30 Wurth Paul Sa Procede et dispositif de correction de la trajectoire de chute dans une installation de chargement d'un four a cuve
FR2613021A1 (fr) * 1987-03-24 1988-09-30 Wurth Paul Sa Mecanisme pour actionner un clapet d'ouverture et de fermeture
FR2613049A1 (fr) * 1987-03-24 1988-09-30 Wurth Paul Sa Charpente de support d'une installation de chargement d'un four a cuve
FR2613050A1 (fr) * 1987-03-24 1988-09-30 Wurth Paul Sa Tremie d'alimentation d'une installation de chargement d'un four a cuve
AU584281B2 (en) * 1986-03-04 1989-05-18 Paul Wurth S.A. Installation for charging a shaft furnace
EP0613955A1 (fr) * 1993-03-04 1994-09-07 Paul Wurth S.A. Dispositif de chargement avec organe de réglage du débit
TR26694A (tr) * 1991-05-25 1995-05-15 Bayer Ag SüBSTITüE EDILMIS 4-HETARIL-PIRAZOLINLER

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61108349U (enrdf_load_stackoverflow) * 1984-12-20 1986-07-09
LU85811A1 (fr) * 1985-03-15 1986-10-06 Wurth Paul Sa Installation de chargement d'un four a cuve
WO1987006481A1 (en) * 1986-04-30 1987-11-05 Comdox No. 70 Pty. Limited Actuation linkage for linear motion resistance cell
US4674534A (en) * 1986-06-18 1987-06-23 Hylsa, S.A. Particulate solids flow control valve
DE3775540D1 (de) * 1986-07-31 1992-02-06 Lothar Ruehland Sammelbehaelter fuer wiederverwertbares material.
LU86680A1 (fr) * 1986-11-21 1988-06-13 Wurth Paul Sa Mecanisme pour actionner un clapet de dosage
LU86679A1 (fr) * 1986-11-21 1988-06-13 Wurth Paul Sa Mecanisme pour actionner un clapet de dosage
LU88232A1 (fr) * 1993-03-04 1994-10-03 Wurth Paul Sa Dispositif de chargement d'une enceinte sous pression
US5470473A (en) * 1994-02-17 1995-11-28 Baker Hughes Incorporated Rotary vacuum filtration drum with valved hopper cake treatment means
SE507247C2 (sv) * 1996-03-29 1998-04-27 Ssab Oxeloesund Ab Beskickningsanordning för en masugn
US5961269A (en) 1996-11-18 1999-10-05 Applied Materials, Inc. Three chamber load lock apparatus
LU90308B1 (fr) * 1998-10-30 2000-07-19 Wurth Paul Sa Clapet de retenue de mati-re pour une tr-mie d'alimentation
US6092981A (en) * 1999-03-11 2000-07-25 Applied Materials, Inc. Modular substrate cassette
RU2169777C2 (ru) * 1999-07-13 2001-06-27 Оао "Гипромез" Загрузочное устройство доменной печи
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CN1505729A (zh) 2001-03-16 2004-06-16 �����ˡ�A������ŵ 基本无弹簧的阀驱动系统
DE10334417A1 (de) * 2003-06-20 2005-01-05 Z & J Technologies Gmbh Ofenkopf bzw. Gichtverschluß
DE10333569A1 (de) * 2003-07-23 2005-02-17 Z & J Technologies Gmbh Einrichtung zur Verteilung von Schüttgut in wenigstens zwei oberhalb der Gicht eines Hochofens angeordnete Bunker
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EP0134918A1 (fr) * 1983-06-29 1985-03-27 Paul Wurth S.A. Mécanisme pour actionner un clapet de dosage
AU584281B2 (en) * 1986-03-04 1989-05-18 Paul Wurth S.A. Installation for charging a shaft furnace
EP0252342A1 (fr) * 1986-06-30 1988-01-13 Paul Wurth S.A. Dispositif de fermeture d'une ouverture centrale supérieure d'une enceinte et application à une trémie de stockage d'une installation de chargement d'un four à cuve
DE3809544A1 (de) * 1987-03-24 1988-10-06 Wurth Paul Sa Zufuehrungstrichter einer schachtofen-beschickungsanlage
FR2613051A1 (fr) * 1987-03-24 1988-09-30 Wurth Paul Sa Procede et dispositif de correction de la trajectoire de chute dans une installation de chargement d'un four a cuve
FR2613050A1 (fr) * 1987-03-24 1988-09-30 Wurth Paul Sa Tremie d'alimentation d'une installation de chargement d'un four a cuve
DE3809534A1 (de) * 1987-03-24 1988-10-06 Wurth Paul Sa Verfahren und vorrichtung zur korrektur der fallbahn in einer schachtofen-beschickungsanlage
DE3809546A1 (de) * 1987-03-24 1988-10-06 Wurth Paul Sa Mechanismus zum betaetigen einer verschluss- und zurueckhalteklappe
FR2613021A1 (fr) * 1987-03-24 1988-09-30 Wurth Paul Sa Mecanisme pour actionner un clapet d'ouverture et de fermeture
DE3809547A1 (de) * 1987-03-24 1988-10-06 Wurth Paul Sa Traggeruest einer schachtofen-beschickungsanlage
FR2613049A1 (fr) * 1987-03-24 1988-09-30 Wurth Paul Sa Charpente de support d'une installation de chargement d'un four a cuve
AU592253B2 (en) * 1987-03-24 1990-01-04 Paul Wurth S.A. Mechanism for actuating an opening and shut-off valve
AU592254B2 (en) * 1987-03-24 1990-01-04 Paul Wurth S.A. Method and apparatus for correcting the falling path in a loading installation of a shaft furnace
TR26694A (tr) * 1991-05-25 1995-05-15 Bayer Ag SüBSTITüE EDILMIS 4-HETARIL-PIRAZOLINLER
EP0613955A1 (fr) * 1993-03-04 1994-09-07 Paul Wurth S.A. Dispositif de chargement avec organe de réglage du débit
US5411242A (en) * 1993-03-04 1995-05-02 Paul Wurth S.A. Charging device with member for regulating the flow rate
TR27694A (tr) * 1993-03-04 1995-06-19 Wurth Paul Sa Akis hizini düzenleyen komponenti haiz dolum düzenegi.

Also Published As

Publication number Publication date
CS244421B2 (en) 1986-07-17
DE3265716D1 (en) 1985-10-03
JPH0233765B2 (enrdf_load_stackoverflow) 1990-07-30
UA7734A1 (uk) 1995-12-26
US4514129A (en) 1985-04-30
KR890004533B1 (ko) 1989-11-13
KR830010200A (ko) 1983-12-26
ATE15230T1 (de) 1985-09-15
EP0062770A1 (fr) 1982-10-20
SU1251811A3 (ru) 1986-08-15
BR8201964A (pt) 1983-03-08
JPS57177909A (en) 1982-11-01
CA1168442A (en) 1984-06-05
IN157881B (enrdf_load_stackoverflow) 1986-07-12
LU83279A1 (fr) 1983-03-24

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