EP3353337A1 - Device for supplying carbon paste comprising a flow rate control device and supply method using such a device - Google Patents

Device for supplying carbon paste comprising a flow rate control device and supply method using such a device

Info

Publication number
EP3353337A1
EP3353337A1 EP16781514.1A EP16781514A EP3353337A1 EP 3353337 A1 EP3353337 A1 EP 3353337A1 EP 16781514 A EP16781514 A EP 16781514A EP 3353337 A1 EP3353337 A1 EP 3353337A1
Authority
EP
European Patent Office
Prior art keywords
extractor
vibrating
dough
control device
flow control
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.)
Granted
Application number
EP16781514.1A
Other languages
German (de)
French (fr)
Other versions
EP3353337B1 (en
Inventor
Vincent Philippaux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fives Solios SA
Original Assignee
Fives Solios 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 Fives Solios SA filed Critical Fives Solios SA
Publication of EP3353337A1 publication Critical patent/EP3353337A1/en
Application granted granted Critical
Publication of EP3353337B1 publication Critical patent/EP3353337B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12—Anodes
    • C25C3/125—Anodes based on carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
    • B22C15/10—Compacting by jarring devices only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/022—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is subjected to vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/304—Feeding material in particulate or plastic state to moulding presses by using feed frames or shoes with relative movement with regard to the mould or moulds

Definitions

  • Carbonaceous pulp feed device comprising a flow control device and feeding method using such a device
  • the present invention relates to a device for assaying carbonaceous paste obtained from a mixture of liquid pitch and crushed coke intended to feed mold forming machines for producing electrodes, in particular anodes, for the electrolysis of aluminum.
  • the electrolysis of aluminum by the Hall-Héroult process requires the prior manufacture of carbon anodes.
  • the anodes are made from, in particular, liquid pitch and crushed coke, mixed and kneaded to obtain a relatively homogeneous paste.
  • the paste obtained must then be accurately metered and then molded into blocks in compaction machines by vibrocompaction. The precision of the dosage allows for a more regular height of the blocks.
  • the molded blocks are then introduced into ovens known as rotating lights, where they are fired in order to obtain the electrolysis anodes.
  • Vibro-compaction compaction machines are also known, also called forming machines, vibrocompaction machines or vibrocompaction machines, essentially comprising a generally parallelepipedic mold of rectangular cross-section removably mounted on a vibrating table constituting the bottom of the mold and a mass pressing, able to be introduced axially into said mold by an upper end of the mold.
  • the vibrating table is secured to a frame by means of suspension means and is subjected to vibration in a substantially vertical direction, along the axis of the mold, under the effect of vibration actuating means.
  • Such a machine 1 'known, shown in Figures 1 and 2 of the present application, is essentially composed of a mold 1 of generally parallelepiped shape of rectangular cross section of substantially vertical axis, movable vertically, and removably mounted on a vibrating table 2, and a pressing mass 3.
  • a mold 1 of generally parallelepiped shape of rectangular cross section of substantially vertical axis, movable vertically, and removably mounted on a vibrating table 2, and a pressing mass 3.
  • the pasty mixture is compacted under the effect of the hammering of the mass 3.
  • unbalanced shafts 5 rotate in opposite directions and induce excitation in the table 2 which then takes a vertical sinusoidal movement.
  • the table 2 is installed on an elastic suspension 6 to limit vibration transmissions to the ground 7 and / or in the vicinity of the machine 1 '.
  • a known feed device 10 is shown in FIG. 3. It essentially consists of a storage hopper 11 fixed with respect to the compaction machines, which is responsible for collecting the carbonaceous paste produced by the upstream process, said storage hopper 1 1 serving as a buffer between the generally continuous upstream dough stream and the discontinuous dough stream required for feeding the compaction machines.
  • a vibrating extractor 13 located under the storage hopper 1 1 withdraws the carbonaceous paste to transport it and pour it into a weighing hopper 14. This extractor 13 can be of the electromagnetic or unbalanced type or any other type of drive.
  • a flap 12 is located at the outlet of said storage hopper 11 and makes it possible to have a paste layer of uniform height in the vibrator 13.
  • This vibrating extractor 13 is provided with a control system making it possible to vary the speed of extraction in an important report. Typically this speed can vary from 15% to 100% and more precisely from 60 to 100% at the beginning of the dosing cycle and from 15 to 30% at the end of the dosing cycle for a more precise dosage.
  • the storage hopper 1 1 and the vibrating extractor 13 are suspended on load cells to know the exact mass of the dough they contain.
  • the weighing hopper 14 is also suspended on weighers to know the exact mass of the dough it contains.
  • a motorized distribution flap 15, driven by an alternating tilting movement, is installed in the flow of dough between the discharge orifice of the vibratory extractor 13 and the inlet orifice of the weighing hopper 14, thus enabling to dispense the paste evenly over the entire length of the weighing hopper 14.
  • the operation of the vibratory extractor 13 is instantly stopped and a closure flap (not shown) located at the end of the vibrator 13 is actuated to prevent the unexpected fall of pulp and thus ensure the best accuracy of quantity of pulp dosed.
  • the weighing hopper 14 is equipped at its base with an opening and closing system comprising two half-helmets 18 with synchronized tilt, said half-helmets 18 being actuated by one or more cylinders 19.
  • the opening of the half-helmets helmets 18 of the weighing hopper 14 causes a drop of the carbonaceous paste in a transfer hopper 21 of a transport device 20.
  • the synchronized half-helmets 18 are closed again with the aid of the hydraulic jack or cylinders 19, the weighing hopper 14 is ready for a new weighing cycle.
  • the transfer device 20 is moved by means of a carriage 22 rolling along rails 23 to a first compaction machine 1 'for example and, when the transfer hopper 21 has arrived at the appropriate position, the carbonaceous paste contained in the transfer hopper 21 is poured into the mold 1 of the machine 1 'a using an opening and closing device similar to that of the weighing hopper 14.
  • the dosing cycle time between the storage hopper 11 and the transfer hopper 21 can not be reduced significantly without significantly increasing the inaccuracy on the mass of pulp dosed in the weighing hopper 14. so on the molded block height. And this is not compatible with the subsequent use of the oven molded blocks. Indeed a block height accuracy of +/- 10mm is usually required to ensure their placement in these furnaces, and more precisely +/- 5mm.
  • the dosing cycle is typically broken down into three steps: a first step of filling the weighing hopper 14 with 70 to 95% of the target mass of the dough and more precisely 90% to 95%. This is done at high vibration speed of the vibrating extractor 13, typically between 35 and 45 seconds and more precisely 40 seconds.
  • the high extraction rate results in a high dosing inaccuracy typically of the order of 2 to 10%.
  • a second so-called dough dosing step taking place at low vibration speed of the vibrating extractor 13, typically between 5 and 15 seconds and more precisely in 10 seconds.
  • the low extraction rate improves the dosing accuracy, with an uncertainty typically of the order of 0.5 to 2%. Indeed with the flap 12, the dough height is constant in the extractor 13 vibrating.
  • a third step called validation consisting in validating the quantity of dough by measuring the mass and draining the weighing hopper 14 to the transfer hopper 21. This step typically lasts between 5 and 20 seconds and more precisely 10 seconds
  • the production rate of the blocks is therefore limited, in particular by the uncertainty on the dosage of the dough in the hopper 14 weighing. Indeed, the duration of the dosing cycle, in particular because of the filling and dosing steps, must be sufficient to obtain the correct accuracy on the determination of the carbonaceous paste.
  • the invention proposes a carbon paste feed device for feeding a pulp conveying machine for forming molded blocks, for producing electrodes, for the electrolysis of aluminum.
  • the device comprises:
  • At least one storage hopper intended to serve as a buffer for a dough stream coming from an upstream manufacturing process
  • At least one vibrating extractor disposed downstream of the storage hopper for receiving the flow of dough, the vibrating extractor comprising a bottom on which the dough moves;
  • At least one weighing hopper comprising a weighing system making it possible to know the mass of dough which it contains, and disposed downstream of the vibrating extractor to receive the flow of dough;
  • control device for controlling the flow of the dough flow of the vibrating extractor, the control device being able to take at least the following three positions:
  • a metering position in which the flow control device releases the passage between the storage hopper and the vibrating extractor, and in which the flow control device is arranged at a first distance from the bottom of the vibrating extractor; ;
  • a finishing position in which the flow control device releases the passage between the storage hopper and the vibrating extractor, and wherein the flow control device is disposed at a second distance from the bottom of the vibrating extractor , less than the first distance.
  • the control device thus allows, thanks to its at least three positions, to obtain several flow rates of dough, to adjust the accuracy of the assay, while not increasing the dosing cycle time.
  • the feed device may furthermore have, in particular, the following characteristics, considered alone or in combination:
  • the flow control device comprises at least one hinged flap relative to the vibrating extractor to adjust the distance between the shutter and the bottom of the vibrating extractor according to the position of the flow control device;
  • the flow control device comprises two flaps hinged relative to the vibrating extractor to adjust the distance between each flap and the bottom of the vibrating extractor according to the position of the flow control device; - The flow control device comprises three flaps hinged relative to the vibrating extractor to adjust the distance between each flap and the bottom of the vibrating extractor according to the position of the flow control device.
  • the invention relates to a method of feeding a pulp conveying machine for forming blocks molded from carbonaceous paste by means of the feed device as presented above, the method comprising the following steps: a dosing step, in which the dough flows from the storage hopper to the weighing hopper with a first flow rate, the flow control device being in the dosing position,
  • a finishing step wherein the dough flows from the storage hopper to the weigh hopper with a second flow rate lower than the first flow rate, the flow control device being in the finishing position,
  • a closing step wherein the dough is prevented from flowing from the storage hopper to the weigh hopper, the flow control device being in the closed position.
  • the feeding process may furthermore include, in particular, the following characteristics, considered alone or in combination:
  • the speed of the vibrating extractor in the dosing step is greater than the speed of the vibrating extractor in the finishing step
  • the speed of the vibrating extractor in the dosing step is between 60% and 100% of its nominal speed and the speed of the vibrating extractor in the finishing step is between 10% and 30% of its nominal speed;
  • the method further comprises a filling step, wherein the flow control device is inoperative on the flow of dough.
  • the object of the invention is in particular to remedy the limitations of the dough dispensing device described above by proposing a device capable of more rapidly dosing the quantity of carbonaceous paste in the weighing hopper while keeping the same precision, even to increase the dosing accuracy of dosing more precisely.
  • a flow control device additional to the carbon paste dosing system.
  • FIGS. 3 to 6 there is shown a device 100 for supplying carbonaceous paste, for feeding a device 120 for conveying pulp for forming molded blocks.
  • the device 100 for supplying carbonaceous paste according to the invention comprises the elements already described above.
  • the feed device 100 comprises at least one storage hopper 101, intended to receive carbonaceous paste coming from an upstream manufacturing process.
  • the storage hopper 101 is generally fed continuously by the upstream dough stream, but is emptied batchwise as required for feeding the compaction machines.
  • the storage hopper 101 acts as a buffer.
  • the storage hopper 101 is mounted on a frame 102 by means of load cells, the frame 102 resting for example on the ground.
  • the frame 102 comprises, for example, a table 102 'on which the hopper 101 for storage rests.
  • the storage hopper 101 can be moved in a circle C on the table 102 'to change its orientation as needed.
  • upstream and downstream refer to the direction of flow of the carbonaceous paste.
  • the feed device 100 further comprises at least one vibratory extractor 103 disposed downstream of the storage hopper 101 and mounted on the frame 102 by means of load cells. More specifically, the storage hopper 101 comprises an opening, optionally provided with a closure mechanism, through which the carbonaceous paste leaves the storage hopper 101 to go on the vibrating extractor 103.
  • the vibrating extractor 103 is provided with a system making it possible to vary the extraction speed, that is to say the vibration speed of the vibrating extractor 103, in a large ratio, typically between 1 to 3 and 1 to 6.
  • the feed device 100 also comprises at least one weighing hopper 104, mounted on frame 102 by means of load cells and disposed downstream of the vibrating extractor 103 to receive the flow of carbonaceous paste in turn.
  • the bottom of the weighing hopper 104 comprises, as presented above with reference to the state of the art, an opening and closing system for discharging the dough to a transport system.
  • the storage hopper 101, the vibrating extractor 103 and the weighing hopper 104 being suspended on load cells, the mass of dough they contain can be permanently known.
  • the vibrating extractor 103 comprises in particular a bottom 106 on which the carbonaceous paste flows.
  • the bottom 106 may be slightly inclined downwardly relative to the horizontal, between the storage hopper 101 and the hopper 104 weighing so as to promote the flow of the carbonaceous paste under the effect of gravity.
  • the vibratory extractor 103 is in the form of an upwardly open, substantially flat bottom channel 106, comprising two side walls 105 rising from the bottom 106 so as to form a U-shaped section.
  • the terms “horizontal”, “vertical”, “up”, “down”, “above”, “below” and their variants refer to the natural orientation of the figures in which the frame 102 rests on a horizontal floor.
  • the adjectives “transverse” and “longitudinal” and their variants designate the horizontal directions, the longitudinal direction being parallel to the flow direction of the paste in the horizontal plane, and the transverse direction being perpendicular to the longitudinal direction.
  • a motorized distribution flap 105 driven by an alternating tilting movement, can be installed in the flow of dough between the downstream of the vibrating extractor 103 and the weighing hopper 104, thus making it possible to distribute equally the dough along the entire length of the weighing hopper 104.
  • the feed device 100 further comprises a device 107 for controlling the flow of the pulp flow of the extractor 103 vibrating.
  • the flow control device 107 is mounted on the frame 102, and acts on the dough flow rate in the vibrating extractor to control the amount of dough pouring into the hopper 104 weighing according to the stage of the cycle. dosage.
  • the flow control device 107 can then take at least the following three positions:
  • a closed position in which the flow control device 107 is in contact with the bottom 106 of the vibrating extractor 103 and closes the passage between the storage hopper 101 and the vibrating extractor 103 to prevent the flow of dough from passing towards the vibrating extractor
  • a metering position in which the flow control device 107 releases the passage between the storage hopper 101 and the vibrating extractor 103, and wherein the flow control device 107 is disposed at a first distance from the bottom 106 of the extractor 103 vibrating;
  • the dough can flow from the storage hopper 101 along the vibrating extractor 103 to the weigh hopper 104.
  • the first distance between the flow control device 107 and the bottom 106 of the vibratory extractor defines a first section for the passage of the pulp between the two hoppers 101, 104, and consequently defines a first flow of the pulp flow. carbon.
  • the distance between the flow control device 107 and the bottom 106 of the vibrating extractor 103 likewise defines a second flow rate, lower than the first flow rate of the flow position. dosage. Therefore, it is understood that when the flow control device 107 is in the finishing position, the flow control, and thereby the dosage of pulp in the hopper 104 weighing, are improved thanks to the possibility of having a second rate lower than the first rate.
  • Each position of the control device 107 then corresponds to a step in the dosing cycle.
  • control device 107 comprises three components:
  • a second component 109 a second component 109 called dosage
  • a third component 110 said finishing.
  • Each of these three flaps 108, 109, 1 10 is hinged relative to the vibrating extractor 103.
  • Each flap 108, 109, January 10 is for example in the form of a solid plate, comprising a transverse lower edge 108 ', 109', 1 10 'whose transverse dimension corresponds to the transverse dimension between the lateral walls 105 of the extractor 103 vibrating.
  • the metering shutter 109 and the finishing shutter 10 are slidably mounted above the bottom 106 by means of a sliding connection on the frame 102 in a vertical direction, or more generally in a direction comprising at least one component perpendicular to the bottom 106 of the extractor 103 vibrating.
  • the shutter 108 is for example rotatably mounted on the frame 102 above the bottom 106 about a substantially transverse axis A.
  • a control mechanism of the flaps 108, 109, 1 10 makes it possible to actuate them according to the step in the dosing cycle.
  • the closure flap 108 is located for example at the downstream end of the extractor 103 vibrating. It is actuated in rotation about the axis A between an open position, in which it releases a passage for the paste to pass from the extractor 103 vibrating towards the weighing hopper 104 and a closed position in which it blocks the passage and avoids any leakage of pulp from the downstream of the extractor 103 vibrating towards the hopper 104 weighed.
  • the closure flap 108 in contact with the bottom 106 of the vibrating extractor 103.
  • a lower transverse edge 108 'of the closure flap 108 is in contact with the bottom 106 and the closure flap 108 is also in contact with the side walls 105 so as to block the paste in the extractor.
  • a face of the closure flap 108 comes into contact with a downstream end of the extractor 103 vibrating to close the entire section of the extractor 103 vibrating.
  • the metering flap 109 is for example located at the outlet of said storage hopper 101, above the bottom 106 of the vibrating extractor 103, and makes it possible to have a paste layer of uniform height in the extractor 103 vibrating for a given filling speed.
  • This metering flap 109 is provided with a height adjustment system relative to the bottom 106 of the extractor 103 vibrating. More specifically, the distance between a lower transverse edge 109 'of the metering flap 109 and the bottom 106 of the vibrating extractor 103 is adjustable by translation of the flap 109 on the frame 102. Thus, the metering flap 109 can take two positions.
  • a first so-called inactive position in which the distance between the lower transverse edge 109 of the metering flap 109 and the bottom 106 is sufficiently high for the metering flap 109 to have no effect on the flow rate of the flow of pulp
  • a second so-called dosing position in which the lower transverse edge 109 'of the dosing flap 109 is at the first distance from the bottom 106 of the extractor Vibrating, defining the first flow rate of dough.
  • the metering flap 109 delimits a maximum dough height in the vibrating extractor 103, which consequently defines the first flow rate.
  • the metering flap 109 can take a third closed position, in which it blocks the passage of the dough between the storage hopper 101 and the vibrating extractor 103, for example by putting the lower transverse edge 109 into contact with the dosing shutter 109 with the bottom 106 of the vibrating extractor.
  • the finishing shutter 1 is located downstream of the metering shutter 109, above the bottom 106 of the vibrating extractor 103.
  • This shutter 1 10 finishing is also provided with a height adjustment system relative to the bottom 106 of the extractor 103 vibrating. More specifically, the distance between a lower transverse edge 110 'of the finishing shutter 1 and the bottom 106 of the vibrating extractor 103 is adjustable by translating the finishing shutter 1 onto the frame 102.
  • the shutter 1 10 of finishing can take two positions by vertical translation: a first so-called inactive position, in which the distance between the lower transverse edge 1 'of the finishing shutter 1 and the bottom 106 is sufficiently high for the shutter 1 10 finishing n' have no effect on the flow rate of the dough stream, and a second so-called finishing position, in which the transverse lower edge 1 'of the finishing shutter 1 is at the second distance from the bottom 106 of the vibrating extractor 103, defining the second flow rate of dough.
  • the finishing flap 1 delimits a maximum height of pulp in the vibratory extractor 103 which is smaller than the maximum height of the dough defined by the metering flap 109 in the dosing position.
  • the metering flap 109 is slidably mounted on guide columns 1 1 1 fixed to the frame 102 and placed transversely on either side of the vibrating extractor 103.
  • the finishing shutter 1 is slidably mounted on guide columns 12, fixed to the frame 102 and placed transversely on either side of the vibrating extractor 103, downstream of the guide columns 1 1 1. 109 pane of dosage.
  • the metering flap 109 slides on the guide columns 1 1 1 and the finishing shutter 1 10 slides on the guide columns 12 through, for example, one or more signal-type pneumatic actuators of the control mechanism.
  • the actuators can also be hydraulic or electric type.
  • the speed of the vibrating extractor 103 is highest so as to rapidly reduce the quantity of pulp in the hopper buffer 101 and fill the hopper 104 weighing as quickly as possible to reduce the cycle time.
  • the speed varies between 60 to 100% and more precisely 80% to 100% of the nominal speed of the extractor 103 vibrating.
  • the device 107 flow control may then not intervene.
  • the closure flap 108 is then in the open position, and the metering flap 109 and the finishing shutter 1 are in the inactive position.
  • the flow control device 107 is put in the dosing position.
  • the speed of the vibrating extractor 103 is adjusted and the dosing flap 109 is actuated in translation to be put in the dosing position in order to maintain a limited height of the paste in the vibrating extractor 103 .
  • the dough thus flows between the storage hopper 101 and the weighing hopper 104 according to the first flow rate.
  • the speed of the vibrating extractor 103 varies between 60 to 100% and more precisely between 70% to 85% of its nominal speed.
  • the speed of the vibrating extractor 103 and the first distance were previously adjusted to that the flow rate of dough which enters the storage hopper 101 corresponds approximately to the outflow rate downstream of the metering shutter 109 under the effect of the extractor 103 vibrating.
  • the dough layer height for the first flow rate is 140 mm for a vibrator 900 mm wide and a dough flow of 40 t / h.
  • the shutter 1 10 finishing is always inactive position, and the shutter 108 of closure is always in the open position.
  • the speed of the vibrating extractor 103 is decreased.
  • This step of the dosing cycle is then called the finishing step.
  • the flow control device 107 is placed in the finishing position.
  • the shutter 1 10 finishing is then actuated in translation to be put in the finishing position.
  • the dosing flap 109 can be actuated in the inactive position or left in the dosing position. Finishing strand 1 decreases the height of the dough layer in the vibratory extractor 103 to reduce the dough flow rate to ensure better weighing accuracy.
  • the dough thus flows from the storage hopper 101 to the weighing hopper 104 according to the second flow rate lower than the first flow rate.
  • the vibrating speed is reduced to between 10 and 30% and more precisely between 20 and 25%. % of its nominal speed.
  • the layer height in the vibrating extractor 103 is reduced by the finishing flap 1 between 50 and 100 mm and more precisely between 70 and 80 mm for a vibrating extractor 103 of 900 mm wide and a flow rate of 40 t / h.
  • the shutter 1 10 finishing is between 0 and 500 mm and more precisely between 200 and 300 mm from the downstream end of the extractor 103 vibrating.
  • the speed of the vibrating extractor 103 can not be too low because then the dough would no longer flow. There is therefore a minimum flow rate which depends on the width and speed of the vibrating extractor 103, as well as the dough layer height resulting from the adjustment of the finishing shutter 1.
  • the operation of the vibratory extractor 103 is instantly stopped and the flow control device 107 is placed in the closed position. .
  • This dosing cycle step is then called the closing step.
  • the closing flap 108 located downstream of the vibrating extractor 103 is rotated to be placed in the closed position in order to prevent the unexpected fall of pulp into the hopper 104 and to ensure the best precision.
  • the dosing precision is between 0.5% and 2% of the reference weight and more particularly 0.5 to 1%.
  • the metering shutter 109 and the finishing shutter 1 can then be actuated in the inactive position, pending the start of a new metering cycle.
  • the flow control device 107 Thanks to the flow control device 107, the dosing accuracy in the weighing hopper 104 is improved while keeping the same dosing cycle time, or the same precision is maintained by reducing the dosing cycle time and therefore increase the flow, as needed.
  • the flow control device 107 may comprise a single flap, which is then articulated on the frame 102 between four positions:
  • a metering position corresponding to the dosing position of the metering flap 109, defining the second flow rate lower than the first flow rate
  • control device 107 may comprise a closure flap 108 as previously described, and a sliding shutter, serving as both metering shutter and finishing shutter, that is to say, can take three positions: an inactive position, a metering position and a finishing position.
  • a shutter serving as flap respectively dosing or finishing it is also possible to have a shutter serving as flap respectively dosing or finishing, and a flap serving shutter and flap shutter respectively finishing or dosing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention relates to a carbon paste supply device (100) for supplying a machine for transporting paste for forming moulded blocks, for producing electrodes, for electrolysis of aluminium, the device comprising: − at least one storage hopper (101); − at least one vibrating extractor (103); − at least one weighing hopper (104); − and a device (107) for controlling the flow rate of paste from the vibrating extractor (103).

Description

Dispositif d'alimentation de pâte carbonée comprenant un dispositif de contrôle du débit et procédé d'alimentation à l'aide d'un tel dispositif  Carbonaceous pulp feed device comprising a flow control device and feeding method using such a device
DOMAINE DE L'INVENTION FIELD OF THE INVENTION
La présente invention concerne un dispositif de dosage de pâte carbonée obtenue à partir d'un mélange de brai liquide et de coke concassé destiné à alimenter des machines de formage de blocs moulés pour réaliser des électrodes, en particulier des anodes, pour l'électrolyse de l'aluminium. The present invention relates to a device for assaying carbonaceous paste obtained from a mixture of liquid pitch and crushed coke intended to feed mold forming machines for producing electrodes, in particular anodes, for the electrolysis of aluminum.
ARRIERE PLAN DE L'INVENTION BACKGROUND OF THE INVENTION
L'électrolyse de l'aluminium par le procédé Hall-Héroult requiert la fabrication préalable d'anodes en carbone. Les anodes sont fabriquées à partir notamment de brai liquide et de coke concassé, mélangés et malaxés pour obtenir une pâte relativement homogène. La pâte obtenue doit alors être dosée précisément puis moulée en blocs dans des machines de compaction par vibrotassage. La précision du dosage permet d'avoir une hauteur plus régulière des blocs. Les blocs moulés sont ensuite introduits dans des fours dits à feux tournants, où ils sont cuits afin d'obtenir les anodes d'électrolyse. The electrolysis of aluminum by the Hall-Héroult process requires the prior manufacture of carbon anodes. The anodes are made from, in particular, liquid pitch and crushed coke, mixed and kneaded to obtain a relatively homogeneous paste. The paste obtained must then be accurately metered and then molded into blocks in compaction machines by vibrocompaction. The precision of the dosage allows for a more regular height of the blocks. The molded blocks are then introduced into ovens known as rotating lights, where they are fired in order to obtain the electrolysis anodes.
On connaît des machines de compaction par vibrotassage, également appelées machines de formage, machines de vibrotassage ou encore machines de vibrocompactage, comprenant essentiellement un moule de forme générale parallélépipédique de section transversale rectangulaire monté amovible sur une table vibrante constituant le fond du moule et une masse pressante, apte à être introduite axialement dans ledit moule par une extrémité supérieure du moule. La table vibrante est solidarisée à un châssis par l'intermédiaire de moyens de suspension et est soumise à des vibrations selon une direction sensiblement verticale, selon l'axe du moule, sous l'effet de moyens d'actionnement en vibration. Vibro-compaction compaction machines are also known, also called forming machines, vibrocompaction machines or vibrocompaction machines, essentially comprising a generally parallelepipedic mold of rectangular cross-section removably mounted on a vibrating table constituting the bottom of the mold and a mass pressing, able to be introduced axially into said mold by an upper end of the mold. The vibrating table is secured to a frame by means of suspension means and is subjected to vibration in a substantially vertical direction, along the axis of the mold, under the effect of vibration actuating means.
C'est le cas, notamment, du brevet US 3,767,351 qui décrit une machine pour fabriquer des blocs, et plus particulièrement des anodes-blocs, à partir de granulés. Le dispositif est constitué d'une table, dite à secousses ou vibrante, montée sur ressorts et sur laquelle est fixé un moule. Sous la table à secousses se trouvent au moins deux pièces rotatives à balourds qui sont montées et entraînées en rotation de façon à ce que les composantes horizontales des oscillations, qu'elles génèrent dans la table, s'annulent. La rotation des pièces à balourds provoque une oscillation sensiblement harmonique et verticale de la table à secousses, les granulés introduits dans le moule étant ainsi comprimés par vibrations sous la forme d'un bloc compact. Une telle machine 1 ' connue, représentée aux figures 1 et 2 de la présente demande, est donc essentiellement constituée d'un moule 1 de forme générale parallélépipédique de section transversale rectangulaire d'axe sensiblement vertical, déplaçable verticalement, et monté de manière amovible sur une table vibrante 2, et d'une masse pressante 3. Après introduction dans le moule 1 d'une quantité précise de pâte 4 composée de brai liquide et de coke concassé, le mélange pâteux est compacté sous l'effet du martèlement de la masse pressante 3. A cet effet, des arbres balourdés 5 tournent en sens opposé et induisent une excitation dans la table 2 qui prend alors un mouvement sinusoïdal vertical. Usuellement, la table 2 est installée sur une suspension élastique 6 permettant de limiter les transmissions vibratoires au sol 7 et/ou au voisinage de la machine 1 '. This is the case, in particular, of US Pat. No. 3,767,351 which describes a machine for manufacturing blocks, and more particularly block anodes, from granules. The device consists of a table, called shaking or vibrating, mounted on springs and on which is fixed a mold. Under the shaking table are at least two rotary unbalanced parts which are mounted and rotated so that the horizontal components of the oscillations, they generate in the table, cancel each other out. The rotation of unbalanced parts causes a substantially harmonic and vertical oscillation of the shaking table, the granules introduced into the mold thus being compressed by vibration in the form of a compact block. Such a machine 1 'known, shown in Figures 1 and 2 of the present application, is essentially composed of a mold 1 of generally parallelepiped shape of rectangular cross section of substantially vertical axis, movable vertically, and removably mounted on a vibrating table 2, and a pressing mass 3. After introduction into the mold 1 of a precise amount of dough 4 composed of liquid pitch and crushed coke, the pasty mixture is compacted under the effect of the hammering of the mass 3. For this purpose, unbalanced shafts 5 rotate in opposite directions and induce excitation in the table 2 which then takes a vertical sinusoidal movement. Usually, the table 2 is installed on an elastic suspension 6 to limit vibration transmissions to the ground 7 and / or in the vicinity of the machine 1 '.
L'extrémité inférieure de la masse pressante 3, dite empreinte 8, pénètre à l'intérieur du moule 1 pour donner la forme du dessus du bloc moulé. Sous l'effet des déplacements verticaux que la table 2 communique à la pâte 4, la masse pressante 3 rebondit sur le dessus du bloc en cours de formation. The lower end of the pressing mass 3, called the impression 8, penetrates inside the mold 1 to give the shape of the top of the molded block. Under the effect of the vertical movements that the table 2 communicates with the dough 4, the pressing mass 3 bounces on top of the block being formed.
Pour alimenter en pâte carbonée la machine de compactage précédemment décrite selon un cycle de dosage, un ensemble d'équipements en amont est requis. Un dispositif d'alimentation 10 connu est représenté sur la figure 3. Il est essentiellement constitué d'une trémie de stockage 11 , fixe par rapport aux machines de compaction, qui est chargée de recueillir la pâte carbonée fabriquée par le procédé en amont, ladite trémie de stockage 1 1 servant de tampon entre le flux de pâte amont généralement continu et le flux de pâte discontinu nécessaire à l'alimentation des machines de compaction. Un extracteur vibrant 13 situé sous la trémie de stockage 1 1 soutire la pâte carbonée pour la transporter et la déverser dans une trémie de pesée 14. Cet extracteur 13 peut être de type électromagnétique ou à balourds ou tout autre type d'entraînement. Un volet 12 est situé en sortie de ladite trémie de stockage 1 1 et permet d'avoir une couche de pâte de hauteur homogène dans le vibrant 13. Cet extracteur vibrant 13 est muni d'un système de contrôle permettant de faire varier la vitesse d'extraction dans un rapport important. Typiquement cette vitesse peut varier de 15% à 100% et plus précisément de 60 à 100% en début de cycle de dosage et de 15 à 30% à la fin du cycle de dosage pour un dosage plus précis. La trémie de stockage 1 1 et l'extracteur vibrant 13 sont suspendus sur des pesons permettant de connaître la masse exacte de la pâte qu'ils contiennent. La trémie de pesée 14 est également suspendue sur des pesons permettant de connaître la masse exacte de la pâte qu'elle contient. Un volet de répartition motorisé 15, animé d'un mouvement de basculement alternatif est installé dans le flux de pâte entre l'orifice de déversement de l'extracteur vibrant 13 et l'orifice d'entrée de la trémie de pesée 14, permettant ainsi de distribuer de façon équitable la pâte sur toute la longueur de la trémie de pesée 14. Lorsque la masse de pâte prédéfinie correspondant au bloc moulé à fabriquer est atteinte dans la trémie de pesée 14, le fonctionnement de l'extracteur vibrant 13 est instantanément arrêté et un volet de fermeture (non représenté) situé en fin de vibrant 13 est actionné afin d'éviter la chute inopinée de pâte et d'assurer ainsi la meilleure précision de quantité de pâte dosée. In order to supply the compacting machine previously described according to a dosing cycle with carbonaceous paste, a set of equipment upstream is required. A known feed device 10 is shown in FIG. 3. It essentially consists of a storage hopper 11 fixed with respect to the compaction machines, which is responsible for collecting the carbonaceous paste produced by the upstream process, said storage hopper 1 1 serving as a buffer between the generally continuous upstream dough stream and the discontinuous dough stream required for feeding the compaction machines. A vibrating extractor 13 located under the storage hopper 1 1 withdraws the carbonaceous paste to transport it and pour it into a weighing hopper 14. This extractor 13 can be of the electromagnetic or unbalanced type or any other type of drive. A flap 12 is located at the outlet of said storage hopper 11 and makes it possible to have a paste layer of uniform height in the vibrator 13. This vibrating extractor 13 is provided with a control system making it possible to vary the speed of extraction in an important report. Typically this speed can vary from 15% to 100% and more precisely from 60 to 100% at the beginning of the dosing cycle and from 15 to 30% at the end of the dosing cycle for a more precise dosage. The storage hopper 1 1 and the vibrating extractor 13 are suspended on load cells to know the exact mass of the dough they contain. The weighing hopper 14 is also suspended on weighers to know the exact mass of the dough it contains. A motorized distribution flap 15, driven by an alternating tilting movement, is installed in the flow of dough between the discharge orifice of the vibratory extractor 13 and the inlet orifice of the weighing hopper 14, thus enabling to dispense the paste evenly over the entire length of the weighing hopper 14. When the predefined dough mass corresponding to the molded block to be manufactured is reached in the weighing hopper 14, the operation of the vibratory extractor 13 is instantly stopped and a closure flap (not shown) located at the end of the vibrator 13 is actuated to prevent the unexpected fall of pulp and thus ensure the best accuracy of quantity of pulp dosed.
La trémie de pesée 14 est équipée à sa base d'un système d'ouverture et de fermeture comportant deux demi-casques 18 à basculement synchronisé, lesdits demi-casques 18 étant actionnés par un ou des vérins 19. L'ouverture des demi-casques 18 de la trémie de pesée 14 provoque une chute de la pâte carbonée dans une trémie de transfert 21 d'un dispositif 20 de transport. Une fois la trémie de pesée 14 vidangée, les demi-casques synchronisés 18 sont refermés à l'aide du ou des vérins hydrauliques 19, la trémie de pesée 14 est prête pour un nouveau cycle de pesage. Une fois la trémie de transfert 21 chargée, le dispositif de transfert 20 est déplacé au moyen d'un chariot 22 roulant le long de rails 23 vers une première machine de compaction 1 'a par exemple et, lorsque la trémie 21 de transfert est arrivée à la position adéquate, la pâte carbonée contenue dans la trémie de transfert 21 est déversée dans le moule 1 de la machine 1 'a en utilisant un dispositif d'ouverture et de fermeture similaire à celui de la trémie de pesée 14. The weighing hopper 14 is equipped at its base with an opening and closing system comprising two half-helmets 18 with synchronized tilt, said half-helmets 18 being actuated by one or more cylinders 19. The opening of the half-helmets helmets 18 of the weighing hopper 14 causes a drop of the carbonaceous paste in a transfer hopper 21 of a transport device 20. Once the weighing hopper 14 has been drained, the synchronized half-helmets 18 are closed again with the aid of the hydraulic jack or cylinders 19, the weighing hopper 14 is ready for a new weighing cycle. Once the transfer hopper 21 is loaded, the transfer device 20 is moved by means of a carriage 22 rolling along rails 23 to a first compaction machine 1 'for example and, when the transfer hopper 21 has arrived at the appropriate position, the carbonaceous paste contained in the transfer hopper 21 is poured into the mold 1 of the machine 1 'a using an opening and closing device similar to that of the weighing hopper 14.
Lorsque la pâte est déversée, le dispositif 20 de transport est de nouveau déplacé, de sorte que la trémie de transfert 21 retourne se positionner sous la trémie de pesée 14 dans l'attente d'un nouveau chargement pour alimenter la machine 1 'b de compaction suivante. Ainsi, ce système permet de faire fonctionner plusieurs machines de compaction simultanément à partir d'un seul point d'alimentation en pâte carbonée When the paste is poured, the transport device 20 is moved again, so that the transfer hopper 21 returns to be positioned under the weighing hopper 14 while waiting for a new load to feed the machine 1 'b of following compaction. Thus, this system makes it possible to operate several compaction machines simultaneously from a single carbon paste feed point.
Néanmoins, avec le système actuel le temps de cycle du dosage entre la trémie de stockage 1 1 et la trémie de transfert 21 ne peut pas être réduit significativement sans augmenter significativement l'imprécision sur la masse de pâte dosée dans la trémie 14 de pesée et donc sur la hauteur de bloc moulé. Et cela n'est pas compatible avec l'utilisation ultérieure des blocs moulés au four. En effet une précision de hauteur des blocs de +/- 10mm est généralement requise afin d'assurer leur mise en place dans ces fours, et plus précisément +/-5mm. Nevertheless, with the current system, the dosing cycle time between the storage hopper 11 and the transfer hopper 21 can not be reduced significantly without significantly increasing the inaccuracy on the mass of pulp dosed in the weighing hopper 14. so on the molded block height. And this is not compatible with the subsequent use of the oven molded blocks. Indeed a block height accuracy of +/- 10mm is usually required to ensure their placement in these furnaces, and more precisely +/- 5mm.
Les installations actuelles sont capables de produire jusqu'à 60 blocs d'une tonne environ par heure avec deux tables. Cela correspond donc à un cycle de dosage de 1 minute environ et de formage / évacuation du bloc carboné de 1 minute environ. Current facilities are capable of producing up to 60 blocks of about one ton per hour with two tables. This corresponds to a dosing cycle of about 1 minute and forming / evacuation of the carbon block of about 1 minute.
Le cycle de dosage se décompose typiquement en trois étapes : - une première étape dite de remplissage de la trémie 14 de pesée de 70 à 95% de la masse cible de pâte et plus précisément 90% à 95%. Cela s'effectue à grande vitesse de vibrations de l'extracteur 13 vibrant, typiquement entre 35 et 45 secondes et plus précisément 40 secondes. La vitesse d'extraction élevée entraine une imprécision de dosage élevée typiquement de l'ordre de 2 à 10 %. une deuxième étape dite de dosage de la pâte s'effectuant à petite vitesse de vibrations de l'extracteur 13 vibrant, typiquement entre 5 et 15 secondes et plus précisément en 10 secondes. La vitesse d'extraction faible améliore la précision de dosage, avec une incertitude typiquement de l'ordre de 0,5 à 2 %. En effet avec le volet 12, la hauteur de pâte est constante dans l'extracteur 13 vibrant. La diminution de vitesse de l'extracteur 13 vibrant améliore la précision en diminuant la vitesse d'avance de la pâte mais elle ne peut pas être trop faible au risque de bloquer la pâte. une troisième étape dite de validation, consistant à valider la quantité de pâte par mesure de la masse et à vidanger de la trémie de pesée 14 vers la trémie 21 de transfert. Cette étape dure typiquement entre 5 et 20 secondes et plus précisément 10 secondes The dosing cycle is typically broken down into three steps: a first step of filling the weighing hopper 14 with 70 to 95% of the target mass of the dough and more precisely 90% to 95%. This is done at high vibration speed of the vibrating extractor 13, typically between 35 and 45 seconds and more precisely 40 seconds. The high extraction rate results in a high dosing inaccuracy typically of the order of 2 to 10%. a second so-called dough dosing step taking place at low vibration speed of the vibrating extractor 13, typically between 5 and 15 seconds and more precisely in 10 seconds. The low extraction rate improves the dosing accuracy, with an uncertainty typically of the order of 0.5 to 2%. Indeed with the flap 12, the dough height is constant in the extractor 13 vibrating. The decrease in speed of the vibratory extractor 13 improves the accuracy by reducing the speed of advance of the dough, but it can not be too low at the risk of blocking the dough. a third step called validation, consisting in validating the quantity of dough by measuring the mass and draining the weighing hopper 14 to the transfer hopper 21. This step typically lasts between 5 and 20 seconds and more precisely 10 seconds
La cadence de fabrication des blocs s'en trouve donc limitée, en particulier par l'incertitude sur le dosage de la pâte dans la trémie 14 de pesée. En effet, la durée du cycle de dosage, en particulier à cause des étapes de remplissage et de dosage, doit être suffisante pour obtenir la précision adéquate sur le dosage de la pâte carbonée. The production rate of the blocks is therefore limited, in particular by the uncertainty on the dosage of the dough in the hopper 14 weighing. Indeed, the duration of the dosing cycle, in particular because of the filling and dosing steps, must be sufficient to obtain the correct accuracy on the determination of the carbonaceous paste.
Par conséquent, il existe un besoin pour un nouveau dispositif de dosage de pâte carbonée pour un ensemble de fabrication de blocs par des machines de compactage dans lequel notamment la cadence de dosage des blocs est augmentée sans dégrader la précision de ce dosage. Selon un premier aspect, l'invention propose un dispositif d'alimentation de pâte carbonée pour alimenter une machine de transport de pâte pour formage de blocs moulés, pour réaliser des électrodes, pour l'électrolyse de l'aluminium. Le dispositif comprend : Therefore, there is a need for a new carbon paste dosing device for a block production set by compaction machines in which in particular the rate of dosing of the blocks is increased without degrading the accuracy of this assay. According to a first aspect, the invention proposes a carbon paste feed device for feeding a pulp conveying machine for forming molded blocks, for producing electrodes, for the electrolysis of aluminum. The device comprises:
au moins une trémie de stockage, destinée à servir de tampon pour un flux de pâte arrivant d'un procédé amont de fabrication ;  at least one storage hopper, intended to serve as a buffer for a dough stream coming from an upstream manufacturing process;
au moins un extracteur vibrant disposé en aval de la trémie de stockage pour recevoir le flux de pâte, l'extracteur vibrant comprenant un fond sur lequel la pâte se déplace ;  at least one vibrating extractor disposed downstream of the storage hopper for receiving the flow of dough, the vibrating extractor comprising a bottom on which the dough moves;
au moins une trémie de pesée comprenant un système de pesée permettant de connaître la masse de pâte qu'elle contient, et disposée en aval de l'extracteur vibrant pour recevoir le flux de pâte ;  at least one weighing hopper comprising a weighing system making it possible to know the mass of dough which it contains, and disposed downstream of the vibrating extractor to receive the flow of dough;
un dispositif de contrôle du débit du flux de pâte de l'extracteur vibrant, le dispositif de contrôle pouvant prendre au moins les trois positions suivantes :  a device for controlling the flow of the dough flow of the vibrating extractor, the control device being able to take at least the following three positions:
• une position fermée, dans laquelle le dispositif de contrôle du débit est en contact avec le fond de l'extracteur vibrant et ferme un passage entre la trémie de stockage et l'extracteur vibrant pour empêcher le flux de pâte de passer vers l'extracteur vibrant, • a closed position, in which the flow control device is in contact with the bottom of the vibrating extractor and closes a passage between the storage hopper and the vibrating extractor to prevent the flow of pulp from passing to the extractor vibrant,
• une position de dosage, dans laquelle le dispositif de contrôle de débit libère le passage entre la trémie de stockage et l'extracteur vibrant, et dans laquelle le dispositif de contrôle de débit est disposé à une première distance du fond de l'extracteur vibrant ; A metering position, in which the flow control device releases the passage between the storage hopper and the vibrating extractor, and in which the flow control device is arranged at a first distance from the bottom of the vibrating extractor; ;
· une position de finition, dans laquelle le dispositif de contrôle de débit libère le passage entre la trémie de stockage et l'extracteur vibrant, et dans laquelle le dispositif de contrôle de débit est disposé à une deuxième distance du fond de l'extracteur vibrant, inférieure à la première distance. Le dispositif de contrôle permet ainsi, grâce à ses au moins trois positions, d'obtenir plusieurs débits de flux de pâte, pour ajuster la précision du dosage, tout en n'augmentant pas le temps de cycle de dosage.  A finishing position, in which the flow control device releases the passage between the storage hopper and the vibrating extractor, and wherein the flow control device is disposed at a second distance from the bottom of the vibrating extractor , less than the first distance. The control device thus allows, thanks to its at least three positions, to obtain several flow rates of dough, to adjust the accuracy of the assay, while not increasing the dosing cycle time.
Le dispositif d'alimentation peut en outre présenter, notamment, les caractéristiques suivantes, considérées seules ou en combinaison : The feed device may furthermore have, in particular, the following characteristics, considered alone or in combination:
- le dispositif de contrôle du débit comprend au moins un volet articulé par rapport à l'extracteur vibrant pour régler la distance entre le volet et le fond de l'extracteur vibrant en fonction de la position du dispositif de contrôle du débit ;  - The flow control device comprises at least one hinged flap relative to the vibrating extractor to adjust the distance between the shutter and the bottom of the vibrating extractor according to the position of the flow control device;
- le dispositif de contrôle du débit comprend deux volets articulés par rapport à l'extracteur vibrant pour régler la distance entre chaque volet et le fond de l'extracteur vibrant en fonction de la position du dispositif de contrôle du débit ; - le dispositif de contrôle du débit comprend trois volets articulés par rapport à l'extracteur vibrant pour régler la distance entre chaque volet et le fond de l'extracteur vibrant en fonction de la position du dispositif de contrôle du débit. Selon un deuxième aspect, l'invention concerne un procédé d'alimentation d'une machine de transport de pâte pour formage de blocs moulés en pâte carbonée à l'aide du dispositif d'alimentation tel que présenté ci-dessus, le procédé comprenant les étapes suivantes : une étape de dosage, dans laquelle la pâte s'écoule de la trémie de stockage à la trémie de pesée avec un premier débit, le dispositif de contrôle du débit étant dans la position de dosage, - The flow control device comprises two flaps hinged relative to the vibrating extractor to adjust the distance between each flap and the bottom of the vibrating extractor according to the position of the flow control device; - The flow control device comprises three flaps hinged relative to the vibrating extractor to adjust the distance between each flap and the bottom of the vibrating extractor according to the position of the flow control device. According to a second aspect, the invention relates to a method of feeding a pulp conveying machine for forming blocks molded from carbonaceous paste by means of the feed device as presented above, the method comprising the following steps: a dosing step, in which the dough flows from the storage hopper to the weighing hopper with a first flow rate, the flow control device being in the dosing position,
une étape de finition, dans laquelle dans laquelle la pâte s'écoule de la trémie de stockage à la trémie de pesée avec un deuxième débit inférieur au premier débit, le dispositif de contrôle du débit étant dans la position de finition,  a finishing step, wherein the dough flows from the storage hopper to the weigh hopper with a second flow rate lower than the first flow rate, the flow control device being in the finishing position,
une étape de fermeture, dans laquelle la pâte est empêchée de s'écouler de la trémie de stockage à la trémie de pesée, le dispositif de contrôle du débit étant dans la position fermée.  a closing step, wherein the dough is prevented from flowing from the storage hopper to the weigh hopper, the flow control device being in the closed position.
Le procédé d'alimentation peut en outre présenter, notamment, les caractéristiques suivantes, considérées seules ou en combinaison : The feeding process may furthermore include, in particular, the following characteristics, considered alone or in combination:
- la vitesse de l'extracteur vibrant dans l'étape de dosage est supérieure à la vitesse de l'extracteur vibrant dans l'étape de finition ;  the speed of the vibrating extractor in the dosing step is greater than the speed of the vibrating extractor in the finishing step;
- la vitesse de l'extracteur vibrant dans l'étape de dosage est comprise entre 60% et 100% de sa vitesse nominale et la vitesse de l'extracteur vibrant dans l'étape de finition est comprise entre 10% et 30% de sa vitesse nominale ;  the speed of the vibrating extractor in the dosing step is between 60% and 100% of its nominal speed and the speed of the vibrating extractor in the finishing step is between 10% and 30% of its nominal speed;
- le procédé comprend en outre une étape de remplissage, dans lequel le dispositif de contrôle du débit est inopérant sur le flux de pâte.  - The method further comprises a filling step, wherein the flow control device is inoperative on the flow of dough.
DESCRIPTION DE L'INVENTION Le but de l'invention est notamment de remédier aux limitations du dispositif de dosage de pâte précédemment décrit en proposant un dispositif capable de doser plus rapidement la quantité de pâte carbonée dans la trémie de pesée en gardant la même précision voire d'augmenter la précision de dosage de doser plus précisément. A cet effet et conformément à l'invention, il est proposé un dispositif de contrôle de débit, additionnel au système de dosage de pâte carbonée. Sur les figures 3 à 6, il est représenté un dispositif 100 d'alimentation de pâte carbonée, pour alimenter un dispositif 120 de transport de pâte pour formage de blocs moulés. DESCRIPTION OF THE INVENTION The object of the invention is in particular to remedy the limitations of the dough dispensing device described above by proposing a device capable of more rapidly dosing the quantity of carbonaceous paste in the weighing hopper while keeping the same precision, even to increase the dosing accuracy of dosing more precisely. For this purpose and in accordance with the invention, there is provided a flow control device, additional to the carbon paste dosing system. In FIGS. 3 to 6, there is shown a device 100 for supplying carbonaceous paste, for feeding a device 120 for conveying pulp for forming molded blocks.
Le dispositif 100 d'alimentation de pâte carbonée selon l'invention comprend les éléments déjà décrits ci-dessus. The device 100 for supplying carbonaceous paste according to the invention comprises the elements already described above.
En l'occurrence, le dispositif 100 d'alimentation comprend au moins une trémie 101 de stockage, destinée à recevoir de la pâte carbonée venant d'un procédé de fabrication amont. La trémie 101 de stockage est alimentée en général en continu par le flux de pâte amont, mais est vidée en discontinu selon ce qui est nécessaire à l'alimentation des machines de compaction. En d'autres termes, la trémie 101 de stockage fait office de tampon. La trémie 101 de stockage est montée sur un bâti 102 au moyen de pesons, le bâti 102 reposant par exemple sur le sol. Le bâti 102 comprend par exemple une table 102' sur laquelle repose la trémie 101 de stockage. La trémie 101 de stockage peut être déplacée suivant un cercle C sur la table 102' pour modifier son orientation selon les besoins. In this case, the feed device 100 comprises at least one storage hopper 101, intended to receive carbonaceous paste coming from an upstream manufacturing process. The storage hopper 101 is generally fed continuously by the upstream dough stream, but is emptied batchwise as required for feeding the compaction machines. In other words, the storage hopper 101 acts as a buffer. The storage hopper 101 is mounted on a frame 102 by means of load cells, the frame 102 resting for example on the ground. The frame 102 comprises, for example, a table 102 'on which the hopper 101 for storage rests. The storage hopper 101 can be moved in a circle C on the table 102 'to change its orientation as needed.
Dans ce qui suit, les termes « amont » et « aval » font référence au sens d'écoulement de la pâte carbonée. In what follows, the terms "upstream" and "downstream" refer to the direction of flow of the carbonaceous paste.
Le dispositif 100 d'alimentation comprend en outre au moins un extracteur 103 vibrant, disposé en aval de la trémie 101 de stockage, et monté sur le bâti 102 au moyen de pesons. Plus précisément, la trémie 101 de stockage comprend une ouverture, munie éventuellement d'un mécanisme de fermeture, par laquelle la pâte carbonée quitte la trémie 101 de stockage pour aller sur l'extracteur 103 vibrant. The feed device 100 further comprises at least one vibratory extractor 103 disposed downstream of the storage hopper 101 and mounted on the frame 102 by means of load cells. More specifically, the storage hopper 101 comprises an opening, optionally provided with a closure mechanism, through which the carbonaceous paste leaves the storage hopper 101 to go on the vibrating extractor 103.
L'extracteur 103 vibrant est muni d'un système permettant de faire varier la vitesse d'extraction, c'est-à-dire la vitesse des vibrations de l'extracteur 103 vibrant, dans un rapport important, typiquement entre 1 à 3 et 1 à 6. The vibrating extractor 103 is provided with a system making it possible to vary the extraction speed, that is to say the vibration speed of the vibrating extractor 103, in a large ratio, typically between 1 to 3 and 1 to 6.
Le dispositif 100 d'alimentation comprend également au moins une trémie 104 de pesée, montée sur bâti 102 au moyen de pesons et disposée en aval de l'extracteur 103 vibrant pour recevoir à son tour le flux de pâte carbonée. Le fond de la trémie 104 de pesée comprend, comme présenté plus haut en référence à l'état de la technique, un système d'ouverture et de fermeture permettant de décharger la pâte vers un système de transport. La trémie 101 de stockage 101 , l'extracteur 103 vibrant et la trémie 104 de pesée étant suspendus sur des pesons, la masse de pâte qu'ils contiennent peut être connue en permanence. L'extracteur 103 vibrant comprend notamment un fond 106 sur lequel la pâte carbonée s'écoule. Le fond 106 peut être légèrement incliné vers le bas par rapport à l'horizontal, entre la trémie 101 de stockage et la trémie 104 de pesée de manière à favoriser l'écoulement de la pâte carbonée sous l'effet de la gravité. Par exemple, l'extracteur 103 vibrant se présente sous la forme d'une gouttière ouverte vers le haut, à fond 106 sensiblement plat, comprenant deux parois 105 latérales s'élevant à partir du fond 106 de manière à former une section en U. The feed device 100 also comprises at least one weighing hopper 104, mounted on frame 102 by means of load cells and disposed downstream of the vibrating extractor 103 to receive the flow of carbonaceous paste in turn. The bottom of the weighing hopper 104 comprises, as presented above with reference to the state of the art, an opening and closing system for discharging the dough to a transport system. The storage hopper 101, the vibrating extractor 103 and the weighing hopper 104 being suspended on load cells, the mass of dough they contain can be permanently known. The vibrating extractor 103 comprises in particular a bottom 106 on which the carbonaceous paste flows. The bottom 106 may be slightly inclined downwardly relative to the horizontal, between the storage hopper 101 and the hopper 104 weighing so as to promote the flow of the carbonaceous paste under the effect of gravity. For example, the vibratory extractor 103 is in the form of an upwardly open, substantially flat bottom channel 106, comprising two side walls 105 rising from the bottom 106 so as to form a U-shaped section.
A des fins de simplification, mais de manière non limitative, dans ce qui suit, les termes « horizontal », « vertical », « haut », « bas », « dessus », « dessous » et leurs variantes font référence à l'orientation naturelle des figures dans lesquelles le bâti 102 repose sur un sol horizontal. Dans ce qui suit, les adjectifs « transversal » et « longitudinal » ainsi que leurs variantes désignent les directions horizontales, la direction longitudinale étant parallèle à la direction d'écoulement de la pâte dans le plan horizontal, et la direction transversale étant perpendiculaire à la direction longitudinale. For purposes of simplification, but in a non-limiting manner, in the following, the terms "horizontal", "vertical", "up", "down", "above", "below" and their variants refer to the natural orientation of the figures in which the frame 102 rests on a horizontal floor. In the following, the adjectives "transverse" and "longitudinal" and their variants designate the horizontal directions, the longitudinal direction being parallel to the flow direction of the paste in the horizontal plane, and the transverse direction being perpendicular to the longitudinal direction.
Éventuellement, un volet 105 de répartition motorisé, animé d'un mouvement de basculement alternatif, peut être installé dans le flux de pâte entre l'aval de l'extracteur vibrant 103 et la trémie de pesée 104, permettant ainsi de distribuer de façon égale la pâte sur toute la longueur de la trémie de pesée 104. Optionally, a motorized distribution flap 105, driven by an alternating tilting movement, can be installed in the flow of dough between the downstream of the vibrating extractor 103 and the weighing hopper 104, thus making it possible to distribute equally the dough along the entire length of the weighing hopper 104.
Le dispositif 100 d'alimentation comprend en outre un dispositif 107 de contrôle du débit du flux de pâte de l'extracteur 103 vibrant. Le dispositif 107 de contrôle du débit est monté sur le bâti 102, et agit sur le débit de pâte dans l'extracteur vibrant afin de contrôler la quantité de pâte se déversant dans la trémie 104 de pesée en fonction de l'étape du cycle de dosage. The feed device 100 further comprises a device 107 for controlling the flow of the pulp flow of the extractor 103 vibrating. The flow control device 107 is mounted on the frame 102, and acts on the dough flow rate in the vibrating extractor to control the amount of dough pouring into the hopper 104 weighing according to the stage of the cycle. dosage.
Le dispositif 107 de contrôle du débit peut alors prendre au moins les trois positions suivantes : The flow control device 107 can then take at least the following three positions:
une position fermée, dans laquelle le dispositif 107 de contrôle du débit est en contact avec le fond 106 de l'extracteur 103 vibrant et ferme le passage entre la trémie 101 de stockage et l'extracteur 103 vibrant pour empêcher le flux de pâte de passer vers l'extracteur vibrant, une position de dosage, dans laquelle le dispositif 107 de contrôle de débit libère le passage entre la trémie 101 de stockage et l'extracteur 103 vibrant, et dans laquelle le dispositif 107 de contrôle de débit est disposé à une première distance du fond 106 de l'extracteur 103 vibrant ; a closed position, in which the flow control device 107 is in contact with the bottom 106 of the vibrating extractor 103 and closes the passage between the storage hopper 101 and the vibrating extractor 103 to prevent the flow of dough from passing towards the vibrating extractor, a metering position, in which the flow control device 107 releases the passage between the storage hopper 101 and the vibrating extractor 103, and wherein the flow control device 107 is disposed at a first distance from the bottom 106 of the extractor 103 vibrating;
- une position de finition, dans laquelle le dispositif de contrôle de débit libère le passage entre la trémie 101 de stockage et l'extracteur 103 vibrant, et dans laquelle le dispositif 107 de contrôle de débit est disposé à une deuxième distance du fond 106 de l'extracteur 103 vibrant, inférieure à la première distance. Ainsi, lorsque le dispositif 107 de contrôle du débit est dans la position fermée, la pâte ne peut plus se déverser depuis la trémie 101 de stockage vers la trémie 104 de pesée, le passage par l'extracteur 103 vibrant étant bloqué. a finishing position, in which the flow control device releases the passage between the storage hopper 101 and the vibrating extractor 103, and in which the flow control device 107 is arranged at a second distance from the bottom 106 of the extractor 103 vibrating, lower than the first distance. Thus, when the flow control device 107 is in the closed position, the dough can no longer pour from the storage hopper 101 to the weigh hopper 104, the passage through the vibrating extractor 103 being blocked.
Lorsque le dispositif 107 de contrôle du débit est dans la position de dosage, la pâte peut s'écouler depuis la trémie 101 de stockage, le long de l'extracteur 103 vibrant, vers la trémie 104 de pesée. La première distance entre le dispositif 107 de contrôle du débit et le fond 106 de l'extracteur vibrant définit une première section pour le passage de la pâte entre les deux trémies 101 , 104, et définit donc par conséquence un premier débit de flux de pâte carbonée. When the flow control device 107 is in the metering position, the dough can flow from the storage hopper 101 along the vibrating extractor 103 to the weigh hopper 104. The first distance between the flow control device 107 and the bottom 106 of the vibratory extractor defines a first section for the passage of the pulp between the two hoppers 101, 104, and consequently defines a first flow of the pulp flow. carbon.
Lorsque le dispositif 107 de contrôle du débit est dans la position de finition, la distance entre le dispositif 107 de contrôle du débit et le fond 106 de l'extracteur 103 vibrant définit de même un deuxième débit, inférieur au premier débit de la position de dosage. Dès lors, on comprend que lorsque le dispositif 107 de contrôle du débit est dans la position de finition, le contrôle du débit, et par là le dosage de pâte dans la trémie 104 de pesée, sont améliorées grâce à la possibilité d'avoir un deuxième débit inférieur au premier débit. Chaque position du dispositif 107 de contrôle correspond alors à une étape dans le cycle de dosage. When the flow control device 107 is in the finishing position, the distance between the flow control device 107 and the bottom 106 of the vibrating extractor 103 likewise defines a second flow rate, lower than the first flow rate of the flow position. dosage. Therefore, it is understood that when the flow control device 107 is in the finishing position, the flow control, and thereby the dosage of pulp in the hopper 104 weighing, are improved thanks to the possibility of having a second rate lower than the first rate. Each position of the control device 107 then corresponds to a step in the dosing cycle.
Selon un premier exemple de réalisation, qui est celui des figures, le dispositif 107 de contrôle comprend trois volets : According to a first exemplary embodiment, which is that of the figures, the control device 107 comprises three components:
un premier volet 108 dit de fermeture ;  a first shutter 108 said closing;
un deuxième volet 109 dit de dosage ;  a second component 109 called dosage;
- un troisième volet 110 dit de finition. - A third component 110 said finishing.
Chacun de ces trois volets 108, 109, 1 10 est articulé par rapport à l'extracteur 103 vibrant. Chaque volet 108, 109, 1 10 se présente par exemple sous la forme d'une plaque pleine, comprenant un bord 108', 109', 1 10' inférieur transversal dont la dimension transversale correspond à la dimension transversale entre les parois 105 latérales de l'extracteur 103 vibrant. Par exemple, le volet 109 de dosage et le volet 1 10 de finition sont montés glissants au-dessus du fond 106 au moyen d'une liaison glissière sur la bâti 102 selon une direction verticale, ou plus généralement selon une direction comprenant au moins une composante perpendiculaire au fond 106 de l'extracteur 103 vibrant. Le volet 108 de fermeture est par exemple monté en rotation sur le bâti 102 au-dessus du fond 106 autour d'un axe A sensiblement transversal. Each of these three flaps 108, 109, 1 10 is hinged relative to the vibrating extractor 103. Each flap 108, 109, January 10 is for example in the form of a solid plate, comprising a transverse lower edge 108 ', 109', 1 10 'whose transverse dimension corresponds to the transverse dimension between the lateral walls 105 of the extractor 103 vibrating. For example, the metering shutter 109 and the finishing shutter 10 are slidably mounted above the bottom 106 by means of a sliding connection on the frame 102 in a vertical direction, or more generally in a direction comprising at least one component perpendicular to the bottom 106 of the extractor 103 vibrating. The shutter 108 is for example rotatably mounted on the frame 102 above the bottom 106 about a substantially transverse axis A.
Un mécanisme de commande des volets 108, 109, 1 10 permet de les actionner en fonction de l'étape dans le cycle de dosage. A control mechanism of the flaps 108, 109, 1 10 makes it possible to actuate them according to the step in the dosing cycle.
Le volet 108 de fermeture est situé par exemple à l'extrémité aval de l'extracteur 103 vibrant. II est actionné en rotation autour de l'axe A entre une position ouverte, dans laquelle il libère un passage pour que la pâte passe de l'extracteur 103 vibrant vers la trémie 104 de pesée et une position fermée dans laquelle il bloque le passage et évite toute fuite de pâte de l'aval de l'extracteur 103 vibrant vers la trémie 104 pesée. Ainsi, en position fermée, le volet 108 de fermeture est en contact avec le fond 106 de l'extracteur 103 vibrant. Par exemple, un bord 108' inférieur transversal du volet 108 de fermeture est en contact avec le fond 106 et le volet 108 de fermeture est par ailleurs en contact avec les parois 105 latérales de manière à bloquer la pâte dans l'extracteur. En variante, en position fermée, une face du volet 108 de fermeture vient en contact avec une extrémité aval de l'extracteur 103 vibrant pour fermer l'ensemble de la section de l'extracteur 103 vibrant. The closure flap 108 is located for example at the downstream end of the extractor 103 vibrating. It is actuated in rotation about the axis A between an open position, in which it releases a passage for the paste to pass from the extractor 103 vibrating towards the weighing hopper 104 and a closed position in which it blocks the passage and avoids any leakage of pulp from the downstream of the extractor 103 vibrating towards the hopper 104 weighed. Thus, in the closed position, the closure flap 108 is in contact with the bottom 106 of the vibrating extractor 103. For example, a lower transverse edge 108 'of the closure flap 108 is in contact with the bottom 106 and the closure flap 108 is also in contact with the side walls 105 so as to block the paste in the extractor. Alternatively, in the closed position, a face of the closure flap 108 comes into contact with a downstream end of the extractor 103 vibrating to close the entire section of the extractor 103 vibrating.
Le volet 109 de dosage est par exemple situé en sortie de ladite trémie 101 de stockage, au- dessus du fond 106 de l'extracteur 103 vibrant, et permet d'avoir une couche de pâte de hauteur homogène dans l'extracteur 103 vibrant pour une vitesse de remplissage donnée. Ce volet 109 de dosage est muni d'un système de réglage en hauteur par rapport au fond 106 de l'extracteur 103 vibrant. Plus précisément, la distance entre un bord 109' transversal inférieur du volet 109 de dosage et le fond 106 de l'extracteur 103 vibrant est réglable par translation du volet 109 sur le bâti 102. Ainsi, le volet 109 de dosage peut prendre deux positions par translation verticale : une première position dite inactive, dans laquelle la distance entre le bord 109' transversal inférieur du volet 109 de dosage et le fond 106 est suffisamment élevée pour que le volet 109 de dosage n'ai aucune incidence sur le débit du flux de pâte, et une deuxième position dite de dosage, dans laquelle le bord 109' inférieur transversal du volet 109 de dosage est à la première distance du fond 106 de l'extracteur 103 vibrant, définissant le premier débit de flux de pâte. Ainsi, dans la position de dosage, le volet 109 de dosage délimite une hauteur de pâte maximale dans l'extracteur 103 vibrant, qui définit par conséquence le premier débit. Eventuellement, le volet 109 de dosage peut prendre une troisième position de fermeture, dans laquelle il bloque le passage de la pâte entre la trémie 101 de stockage et l'extracteur 103 vibrant, par exemple en mettant en contact le bord 109' transversal inférieur du volet 109 de dosage avec le fond 106 de l'extracteur vibrant. Le volet 1 10 de finition est situé en aval du volet 109 de dosage, au-dessus du fond 106 de l'extracteur 103 vibrant. Ce volet 1 10 de finition est également muni d'un système de réglage en hauteur par rapport au fond 106 de l'extracteur 103 vibrant. Plus précisément, la distance entre un bord 110' transversal inférieur du volet 1 10 de finition et le fond 106 de l'extracteur 103 vibrant est réglable par translation du volet 1 10 de finition sur le bâti 102. Ainsi, le volet 1 10 de finition peut prendre deux positions par translation verticale : une première position dite inactive, dans laquelle la distance entre le bord 1 10' transversal inférieur du volet 1 10 de finition et le fond 106 est suffisamment élevée pour que le volet 1 10 de finition n'ai aucune incidence sur le débit du flux de pâte, et une deuxième position dite de finition, dans laquelle le bord 1 10' inférieur transversal du volet 1 10 de finition est à la deuxième distance du fond 106 de l'extracteur 103 vibrant, définissant le deuxième débit de flux de pâte. Ainsi, dans la position de finition, le volet 1 10 de finition délimite une hauteur maximale de pâte dans l'extracteur 103 vibrant qui est inférieure à la hauteur maximale de pâte définit par le volet 109 de dosage dans la position de dosage. Selon un mode de réalisation, le volet 109 de dosage est monté coulissant sur des colonnes 1 1 1 de guidage fixées au bâti 102 et placées transversalement de part et d'autres de l'extracteur 103 vibrant. De même, le volet 1 10 de finition est monté coulissant sur des colonnes 1 12 de guidage, fixées au bâti 102 et placées transversalement de part et d'autre de l'extracteur 103 vibrant, en aval des colonnes 1 1 1 de guidage du volet 109 de dosage. Le volet 109 de dosage coulisse sur les colonnes 1 1 1 de guidage et le volet 1 10 de finition coulisse sur les colonnes 1 12 de guidage grâce par exemple à un ou plusieurs actionneurs de type pneumatique sur signal du mécanisme de commande. Les actionneurs peuvent être aussi de type hydraulique ou électrique. En début de cycle de dosage d'un nouveau bloc moulé, pendant l'étape de remplissage de la trémie 104 de pesée, la vitesse de l'extracteur 103 vibrant est la plus élevée afin de diminuer rapidement la quantité de pâte dans la trémie tampon 101 et de remplir la trémie 104 pesée le plus rapidement possible pour réduire le temps de cycle. Typiquement, la vitesse varie entre 60 à 100% et plus précisément 80% à 100% de la vitesse nominale de l'extracteur 103 vibrant. Le dispositif 107 de contrôle du débit peut alors ne pas intervenir. Notamment, selon l'exemple présenté ici, le volet 108 de fermeture est alors en position ouverte, et le volet 109 de dosage et le volet 1 10 de finition sont dans la position inactive. The metering flap 109 is for example located at the outlet of said storage hopper 101, above the bottom 106 of the vibrating extractor 103, and makes it possible to have a paste layer of uniform height in the extractor 103 vibrating for a given filling speed. This metering flap 109 is provided with a height adjustment system relative to the bottom 106 of the extractor 103 vibrating. More specifically, the distance between a lower transverse edge 109 'of the metering flap 109 and the bottom 106 of the vibrating extractor 103 is adjustable by translation of the flap 109 on the frame 102. Thus, the metering flap 109 can take two positions. by vertical translation: a first so-called inactive position, in which the distance between the lower transverse edge 109 of the metering flap 109 and the bottom 106 is sufficiently high for the metering flap 109 to have no effect on the flow rate of the flow of pulp, and a second so-called dosing position, in which the lower transverse edge 109 'of the dosing flap 109 is at the first distance from the bottom 106 of the extractor Vibrating, defining the first flow rate of dough. Thus, in the metering position, the metering flap 109 delimits a maximum dough height in the vibrating extractor 103, which consequently defines the first flow rate. Optionally, the metering flap 109 can take a third closed position, in which it blocks the passage of the dough between the storage hopper 101 and the vibrating extractor 103, for example by putting the lower transverse edge 109 into contact with the dosing shutter 109 with the bottom 106 of the vibrating extractor. The finishing shutter 1 is located downstream of the metering shutter 109, above the bottom 106 of the vibrating extractor 103. This shutter 1 10 finishing is also provided with a height adjustment system relative to the bottom 106 of the extractor 103 vibrating. More specifically, the distance between a lower transverse edge 110 'of the finishing shutter 1 and the bottom 106 of the vibrating extractor 103 is adjustable by translating the finishing shutter 1 onto the frame 102. Thus, the shutter 1 10 of finishing can take two positions by vertical translation: a first so-called inactive position, in which the distance between the lower transverse edge 1 'of the finishing shutter 1 and the bottom 106 is sufficiently high for the shutter 1 10 finishing n' have no effect on the flow rate of the dough stream, and a second so-called finishing position, in which the transverse lower edge 1 'of the finishing shutter 1 is at the second distance from the bottom 106 of the vibrating extractor 103, defining the second flow rate of dough. Thus, in the finishing position, the finishing flap 1 delimits a maximum height of pulp in the vibratory extractor 103 which is smaller than the maximum height of the dough defined by the metering flap 109 in the dosing position. According to one embodiment, the metering flap 109 is slidably mounted on guide columns 1 1 1 fixed to the frame 102 and placed transversely on either side of the vibrating extractor 103. Similarly, the finishing shutter 1 is slidably mounted on guide columns 12, fixed to the frame 102 and placed transversely on either side of the vibrating extractor 103, downstream of the guide columns 1 1 1. 109 pane of dosage. The metering flap 109 slides on the guide columns 1 1 1 and the finishing shutter 1 10 slides on the guide columns 12 through, for example, one or more signal-type pneumatic actuators of the control mechanism. The actuators can also be hydraulic or electric type. At the beginning of the dosing cycle of a new molded block, during the step of filling the weighing hopper 104, the speed of the vibrating extractor 103 is highest so as to rapidly reduce the quantity of pulp in the hopper buffer 101 and fill the hopper 104 weighing as quickly as possible to reduce the cycle time. Typically, the speed varies between 60 to 100% and more precisely 80% to 100% of the nominal speed of the extractor 103 vibrating. The device 107 flow control may then not intervene. In particular, according to the example presented here, the closure flap 108 is then in the open position, and the metering flap 109 and the finishing shutter 1 are in the inactive position.
Puis, pendant l'étape de dosage, le dispositif 107 de contrôle de débit est mis en position de dosage. A cet effet, selon l'exemple, la vitesse de l'extracteur 103 vibrant est ajustée et le volet 109 de dosage est actionné en translation pour être mis en position de dosage afin de maintenir une hauteur limitée de pâte dans l'extracteur 103 vibrant. La pâte s'écoule donc entre la trémie 101 de stockage et la trémie 104 de pesée selon le premier débit. Typiquement la vitesse de l'extracteur 103 vibrant varie entre 60 à 100% et plus précisément entre 70% à 85% de sa vitesse nominale. La vitesse de l'extracteur 103 vibrant et la première distance, c'est-à-dire la distance entre le bord 109' transversal inférieur du volet 109 de dosage et le fond 106 de l'extracteur 103 vibrant, ont été préalablement ajustés afin que le débit de pâte qui entre dans la trémie 101 de stockage corresponde environ au débit sortant en aval du volet 109 de dosage sous l'effet de l'extracteur 103 vibrant. Typiquement la hauteur de couche de pâte pour le premier débit est de 140 mm pour un vibrant de 900 mm de large et un débit de pâte de 40 t/h. Le volet 1 10 de finition est toujours en position inactive, et le volet 108 de fermeture est toujours en position ouverte. Then, during the dosing step, the flow control device 107 is put in the dosing position. For this purpose, according to the example, the speed of the vibrating extractor 103 is adjusted and the dosing flap 109 is actuated in translation to be put in the dosing position in order to maintain a limited height of the paste in the vibrating extractor 103 . The dough thus flows between the storage hopper 101 and the weighing hopper 104 according to the first flow rate. Typically the speed of the vibrating extractor 103 varies between 60 to 100% and more precisely between 70% to 85% of its nominal speed. The speed of the vibrating extractor 103 and the first distance, that is to say the distance between the lower transverse edge 109 'of the metering flap 109 and the bottom 106 of the vibrating extractor 103, were previously adjusted to that the flow rate of dough which enters the storage hopper 101 corresponds approximately to the outflow rate downstream of the metering shutter 109 under the effect of the extractor 103 vibrating. Typically the dough layer height for the first flow rate is 140 mm for a vibrator 900 mm wide and a dough flow of 40 t / h. The shutter 1 10 finishing is always inactive position, and the shutter 108 of closure is always in the open position.
Lorsque la masse de pâte prédéfinie est presque atteinte dans la trémie 104 de pesée, ce qui peut être vérifié grâce aux pesons, la vitesse de l'extracteur 103 vibrant est diminuée. Cette étape du cycle de dosage est alors appelée étape de finition. Le dispositif 107 de contrôle de débit est placé en position de finition. Selon l'exemple, le volet 1 10 de finition est alors actionné en translation pour être mis en position de finition. Le volet 109 de dosage peut être actionné en position inactive ou laissé en position de dosage. Le volet 1 10 de finition diminue la hauteur de la couche de pâte dans l'extracteur 103 vibrant afin de réduire le débit de pâte et cela pour garantir une meilleure précision de pesée. La pâte s'écoule donc de la trémie 101 de stockage ver la trémie 104 de pesée selon le deuxième débit inférieur au premier débit. Typiquement, lorsque la trémie 104 de pesée est remplie entre 70 à 95% de la masse de pâte cible, et plus précisément entre 90% à 95%, la vitesse de vibrant est réduite entre 10 et 30% et plus précisément entre 20 et 25% de sa vitesse nominale. Typiquement, la hauteur de couche dans l'extracteur 103 vibrant est réduite par le volet 1 10 de finition entre 50 et 100 mm et plus précisément entre 70 et 80 mm pour un extracteur 103 vibrant de 900 mm de large et un débit de pâte de 40 t/h. Typiquement le volet 1 10 de finition se situe entre 0 et 500 mm et plus précisément entre 200 et 300 mm de l'extrémité aval de l'extracteur 103 vibrant. When the predefined dough mass is almost reached in the hopper 104 weighing, which can be verified through the load cells, the speed of the vibrating extractor 103 is decreased. This step of the dosing cycle is then called the finishing step. The flow control device 107 is placed in the finishing position. According to the example, the shutter 1 10 finishing is then actuated in translation to be put in the finishing position. The dosing flap 109 can be actuated in the inactive position or left in the dosing position. Finishing strand 1 decreases the height of the dough layer in the vibratory extractor 103 to reduce the dough flow rate to ensure better weighing accuracy. The dough thus flows from the storage hopper 101 to the weighing hopper 104 according to the second flow rate lower than the first flow rate. Typically, when the weighing hopper 104 is filled between 70 to 95% of the target dough mass, and more specifically between 90% to 95%, the vibrating speed is reduced to between 10 and 30% and more precisely between 20 and 25%. % of its nominal speed. Typically, the layer height in the vibrating extractor 103 is reduced by the finishing flap 1 between 50 and 100 mm and more precisely between 70 and 80 mm for a vibrating extractor 103 of 900 mm wide and a flow rate of 40 t / h. Typically the shutter 1 10 finishing is between 0 and 500 mm and more precisely between 200 and 300 mm from the downstream end of the extractor 103 vibrating.
Néanmoins, la vitesse de l'extracteur 103 vibrant ne peut pas être trop faible car alors la pâte ne s'écoulerait plus. Il y a donc un débit minimum qui dépend de la largeur et de la vitesse de l'extracteur 103 vibrant, ainsi que de la hauteur de couche de pâte résultant du réglage du volet 1 10 de finition. Nevertheless, the speed of the vibrating extractor 103 can not be too low because then the dough would no longer flow. There is therefore a minimum flow rate which depends on the width and speed of the vibrating extractor 103, as well as the dough layer height resulting from the adjustment of the finishing shutter 1.
Lorsque la masse de pâte cible correspondant au bloc moulé à fabriquer est atteinte avec la tolérance souhaitée dans la trémie 104 de pesée, le fonctionnement de l'extracteur 103 vibrant est instantanément arrêté et le dispositif 107 de contrôle du débit est placé dans la position fermée. Cette étape de cycle de dosage est alors appelée étape de fermeture. Selon l'exemple, le volet 108 de fermeture situé en aval de l'extracteur 103 vibrant est actionné en rotation pour être mis en position fermée afin d'éviter la chute inopinée de pâte dans la trémie 104 de pesée et d'assurer la meilleure précision. Typiquement la précision de dosage est entre 0,5% et 2% du poids de référence et plus particulièrement 0,5 à 1 %. When the target dough mass corresponding to the molded block to be manufactured is reached with the desired tolerance in the weighing hopper 104, the operation of the vibratory extractor 103 is instantly stopped and the flow control device 107 is placed in the closed position. . This dosing cycle step is then called the closing step. According to the example, the closing flap 108 located downstream of the vibrating extractor 103 is rotated to be placed in the closed position in order to prevent the unexpected fall of pulp into the hopper 104 and to ensure the best precision. Typically the dosing precision is between 0.5% and 2% of the reference weight and more particularly 0.5 to 1%.
Le volet 109 de dosage et le volet 1 10 de finition peuvent alors être actionnés en position inactive, dans l'attente du début d'un nouveau cycle de dosage. The metering shutter 109 and the finishing shutter 1 can then be actuated in the inactive position, pending the start of a new metering cycle.
Grâce au dispositif 107 de contrôle du débit, la précision de dosage dans la trémie 104 de pesée est améliorée tout en gardant le même temps de cycle de dosage, ou la même précision est maintenue en diminuant le temps de cycle de dosage et donc d'augmenter le débit, en fonction des besoins. Thanks to the flow control device 107, the dosing accuracy in the weighing hopper 104 is improved while keeping the same dosing cycle time, or the same precision is maintained by reducing the dosing cycle time and therefore increase the flow, as needed.
Le nombre de volets peut être adapté. En effet, le dispositif 107 de contrôle du débit peut comprendre un seul et unique volet, lequel est alors articulé sur le bâti 102 entre quatre positions : The number of shutters can be adapted. Indeed, the flow control device 107 may comprise a single flap, which is then articulated on the frame 102 between four positions:
- une position inactive, dans laquelle il n'a aucune incidence sur le flux de pâte dans l'extracteur 103 vibrant, définissant le premier débit,  an inactive position, in which it has no effect on the flow of pulp in the vibrating extractor 103, defining the first flow,
- une position de dosage, correspondant à la position de dosage du volet 109 de dosage, définissant le deuxième débit inférieur au premier débit,  a metering position, corresponding to the dosing position of the metering flap 109, defining the second flow rate lower than the first flow rate,
- une position de finition, correspondant à la position de finition du volet 1 10 de finition, a finishing position, corresponding to the finishing position of the finishing shutter 1,
- une position fermée, correspondant à la position fermée du volet 1018 de fermeture. - A closed position, corresponding to the closed position of the shutter 1018.
D'autres variantes sont également possible avec deux volets. Par exemple, le dispositif 107 de contrôle peut comprend un volet 108 de fermeture comme décrit précédemment, et un volet coulissant, faisant office à la fois de volet de dosage et de volet de finition, c'est-à-dire pouvant prendre trois positions : une position inactive, une position de dosage et une position de finition. Other variants are also possible with two components. For example, the control device 107 may comprise a closure flap 108 as previously described, and a sliding shutter, serving as both metering shutter and finishing shutter, that is to say, can take three positions: an inactive position, a metering position and a finishing position.
Il est également possible d'avoir un volet faisant office de volet respectivement soit de dosage, soit de finition, et un volet faisant office de volet de fermeture et volet respectivement soit de finition, soit de dosage. It is also possible to have a shutter serving as flap respectively dosing or finishing, and a flap serving shutter and flap shutter respectively finishing or dosing.
Il est également possible d'avoir plus que trois volets, et de définir plus que deux débits. It is also possible to have more than three components, and to define more than two flow rates.

Claims

REVENDICATIONS
1 . Dispositif (100) d'alimentation de pâte carbonée pour alimenter une machine de transport de pâte pour formage de blocs moulés, pour réaliser des électrodes, pour l'électrolyse de l'aluminium, le dispositif comprenant : 1. A device (100) for supplying carbonaceous pulp for supplying a pulp conveying machine for forming molded blocks, for producing electrodes, for electrolysis of aluminum, the device comprising:
au moins une trémie (101 ) de stockage, destinée à servir de tampon pour un flux de pâte arrivant d'un procédé amont de fabrication ;  at least one storage hopper (101) for buffering a flow of dough from an upstream manufacturing process;
au moins un extracteur (103) vibrant disposé en aval de la trémie (101 ) de stockage pour recevoir le flux de pâte, l'extracteur (103) vibrant comprenant un fond (106) sur lequel la pâte se déplace ;  at least one vibrating extractor (103) disposed downstream of the storage hopper (101) for receiving the dough stream, the vibrating extractor (103) comprising a bottom (106) on which the dough moves;
au moins une trémie (104) de pesée comprenant un système de pesée permettant de connaître la masse de pâte qu'elle contient, et disposée en aval de l'extracteur (103) vibrant pour recevoir le flux de pâte ;  at least one weighing hopper (104) comprising a weighing system making it possible to know the mass of dough it contains, and arranged downstream of the vibrating extractor (103) to receive the flow of dough;
un dispositif (107) de contrôle du débit du flux de pâte de l'extracteur (103) vibrant, le dispositif de contrôle pouvant prendre au moins les trois positions suivantes :  a device (107) for controlling the flow of the dough of the extractor (103) vibrating, the control device being able to take at least the following three positions:
• une position fermée, dans laquelle le dispositif (107) de contrôle du débit est en contact avec le fond (106) de l'extracteur (103) vibrant et ferme un passage entre la trémie (101 ) de stockage et l'extracteur (103) vibrant pour empêcher le flux de pâte de passer vers l'extracteur vibrant,  A closed position, in which the flow control device (107) is in contact with the bottom (106) of the vibrating extractor (103) and closes a passage between the storage hopper (101) and the extractor ( 103) vibrating to prevent the flow of dough from passing to the vibrating extractor,
· une position de dosage, dans laquelle le dispositif (107) de contrôle de débit libère le passage entre la trémie (101 ) de stockage et l'extracteur (103) vibrant, et dans laquelle le dispositif (107) de contrôle de débit est disposé à une première distance du fond (106) de l'extracteur (103) vibrant ;  A dosing position, in which the flow control device (107) releases the passage between the storage hopper (101) and the vibrating extractor (103), and wherein the flow control device (107) is disposed at a first distance from the bottom (106) of the vibrating extractor (103);
• une position de finition, dans laquelle le dispositif (107) de contrôle de débit libère le passage entre la trémie (101 ) de stockage et l'extracteur (103) vibrant, et dans laquelle le dispositif (107) de contrôle de débit est disposé à une deuxième distance du fond (106) de l'extracteur (103) vibrant, inférieure à la première distance.  A finishing position, in which the flow control device (107) releases the passage between the storage hopper (101) and the vibrating extractor (103), and wherein the flow control device (107) is disposed at a second distance from the bottom (106) of the extractor (103) vibrating, less than the first distance.
2. Dispositif (100) d'alimentation selon la revendication 1 , dans lequel le dispositif (107) de contrôle du débit comprend au moins un volet (108, 109, 110) articulé par rapport à l'extracteur (103) vibrant pour régler la distance entre le volet et le fond (106) de l'extracteur (103) vibrant en fonction de la position du dispositif (107) de contrôle du débit. 2. Device (100) for supply according to claim 1, wherein the device (107) flow control comprises at least one flap (108, 109, 110) hinged relative to the extractor (103) vibrating to adjust the distance between the shutter and the bottom (106) of the vibrating extractor (103) as a function of the position of the flow control device (107).
3. Dispositif (100) d'alimentation selon la revendication 1 dans lequel le dispositif (107) de contrôle du débit comprend deux volets articulés par rapport à l'extracteur (103) vibrant pour régler la distance entre chaque volet et le fond (106) de l'extracteur (103) vibrant en fonction de la position du dispositif (107) de contrôle du débit. 3. Device (100) for supply according to claim 1 wherein the device (107) flow control comprises two flaps hinged relative to the extractor (103) vibrating for adjusting the distance between each shutter and the bottom (106) of the vibrating extractor (103) according to the position of the flow control device (107).
4. Dispositif (100) d'alimentation selon la revendication 1 dans lequel le dispositif (107) de contrôle du débit comprend trois volets (108, 109, 110) articulés par rapport à l'extracteur4. Device (100) for supply according to claim 1 wherein the device (107) flow control comprises three flaps (108, 109, 110) hinged relative to the extractor
(103) vibrant pour régler la distance entre chaque volet et le fond (106) de l'extracteur (103) vibrant en fonction de la position du dispositif de contrôle du débit. (103) vibrating to adjust the distance between each shutter and the bottom (106) of the vibrating extractor (103) according to the position of the flow control device.
5. Procédé d'alimentation d'une machine de transport de pâte pour formage de blocs moulés en pâte carbonée à l'aide d'un dispositif (100) d'alimentation selon l'une quelconque des revendications précédentes, le procédé comprenant les étapes suivantes : A method of feeding a pulp-conveying machine for forming carbon-paste molded blocks using a feed device (100) according to any one of the preceding claims, the method comprising the steps following:
une étape de dosage, dans laquelle la pâte s'écoule de la trémie (101 ) de stockage à la trémie (104) de pesée avec un premier débit, le dispositif (107) de contrôle du débit étant dans la position de dosage,  a dosing step, in which the dough flows from the hopper (101) to the hopper (101) with a first flow rate, the flow control device (107) being in the dosing position,
- une étape de finition, dans laquelle dans laquelle la pâte s'écoule de la trémie (101 ) de stockage à la trémie (104) de pesée avec un deuxième débit inférieur au premier débit, le dispositif (107) de contrôle du débit étant dans la position de finition, a finishing step, wherein the dough flows from the hopper (101) to the weighing hopper (104) with a second flow rate lower than the first flow rate, the flow control device (107) being in the finishing position,
une étape de fermeture, dans laquelle la pâte est empêchée de s'écouler de la trémie a closing step, in which the dough is prevented from flowing out of the hopper
(101 ) de stockage à la trémie (104) de pesée, le dispositif (107) de contrôle du débit étant dans la position fermée. (101) to the weighing hopper (104), the flow control device (107) being in the closed position.
6. Procédé selon la revendication 5, dans lequel, dans la vitesse de l'extracteur (103) vibrant dans l'étape de dosage est supérieure à la vitesse de l'extracteur (103) vibrant dans l'étape de finition. 6. The method of claim 5, wherein in the speed of the extractor (103) vibrating in the dosing step is greater than the speed of the extractor (103) vibrating in the finishing step.
7. Procédé selon la revendication 6, dans lequel la vitesse de l'extracteur (103) vibrant dans l'étape de dosage est comprise entre 60% et 100% de sa vitesse nominale et la vitesse de l'extracteur (103) vibrant dans l'étape de finition est comprise entre 10% et 30% de sa vitesse nominale 7. The method of claim 6, wherein the speed of the extractor (103) vibrating in the metering step is between 60% and 100% of its nominal speed and the speed of the extractor (103) vibrating in the finishing step is between 10% and 30% of its nominal speed
8. Procédé selon l'une quelconque des revendications 5 à 7, comprenant en outre une étape de remplissage, dans lequel le dispositif de contrôle du débit est inopérant sur le flux de pâte. The method of any one of claims 5 to 7, further comprising a filling step, wherein the flow control device is inoperative on the dough stream.
EP16781514.1A 2015-09-24 2016-09-20 Device for supplying carbon paste comprising a flow rate control device and supply method using such a device Active EP3353337B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1559004A FR3041552B1 (en) 2015-09-24 2015-09-24 CARBONATE PULP FEED DEVICE COMPRISING A FLOW CONTROL DEVICE AND FEEDING METHOD USING SUCH A DEVICE
PCT/FR2016/052379 WO2017051110A1 (en) 2015-09-24 2016-09-20 Device for supplying carbon paste comprising a flow rate control device and supply method using such a device

Publications (2)

Publication Number Publication Date
EP3353337A1 true EP3353337A1 (en) 2018-08-01
EP3353337B1 EP3353337B1 (en) 2019-10-30

Family

ID=54608819

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16781514.1A Active EP3353337B1 (en) 2015-09-24 2016-09-20 Device for supplying carbon paste comprising a flow rate control device and supply method using such a device

Country Status (6)

Country Link
EP (1) EP3353337B1 (en)
CN (1) CN108291321A (en)
CA (1) CA2996850A1 (en)
FR (1) FR3041552B1 (en)
RU (1) RU2018114915A (en)
WO (1) WO2017051110A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109482850B (en) * 2018-12-12 2020-08-18 西安交通大学 Numerical control quantitative weighing type multi-station continuous casting machine
CN113828757B (en) * 2021-09-13 2023-01-06 海宁哈工我耀机器人有限公司 Method for accurately controlling quality of high-temperature molten iron in electrolytic aluminum anode casting

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1586347A (en) * 1977-08-25 1981-03-18 Elektrokohle Lichtenberg Veb Method of shaping carboaceous plastic materials
FR2995879B1 (en) * 2012-09-25 2015-07-24 Solios Carbone DEVICE FOR TRANSPORTING A PASTE FOLLOWING TWO PERPENDICULAR AXES AND A DEVICE FOR MANUFACTURING MOLDED BLOCKS COMPRISING SUCH A DEVICE

Also Published As

Publication number Publication date
EP3353337B1 (en) 2019-10-30
FR3041552A1 (en) 2017-03-31
WO2017051110A1 (en) 2017-03-30
CA2996850A1 (en) 2017-03-30
CN108291321A (en) 2018-07-17
RU2018114915A (en) 2019-10-24
FR3041552B1 (en) 2017-10-20

Similar Documents

Publication Publication Date Title
EP2711149B1 (en) Device for transporting slurry along two perpendicular axes and assembly for manufacturing mould blocks including such a device
US10773423B2 (en) Method and device for dosing of a powder for the additive manufacture of a product
DK1308099T3 (en) Method and device for preparing a layer of coating material, and coating device
EP0270814A2 (en) Distributing and dosing device
EP3353337B1 (en) Device for supplying carbon paste comprising a flow rate control device and supply method using such a device
EP0126662B1 (en) Process and device for the dosage by weight of a powder
US11292059B2 (en) Additive manufacturing process comprising a powder distribution step performed by an injector
KR101948060B1 (en) Supplying apparatus for powder
FR2598223A1 (en) AUTOMATIC WEIGHTING SYSTEM
FR2521185A1 (en) FERROUS TRACK CORRECTION MACHINE FOR INSUFFLATION OF BALLAST MATERIALS
EP3996920A1 (en) Device and method for depositing a granular material in additive manufacture
BE658990A (en)
FR2636658A1 (en) Machine for the casting of concrete products
FR2613583A1 (en) PROCESS AND MACHINE FOR FILLING A SET OF MOLDS INTENDED FOR THE MANUFACTURE OF CHEESES
FR2729602A1 (en) Pressure moulding installation for concrete products
FR2505998A1 (en) METHOD AND APPARATUS FOR CASTING REFRACTORY AMORPHOUS FILLING MATERIAL IN MOLDED METAL CONTAINER
NL1027168C1 (en) Filling machine, especially for bags of potting soil, has weighing device integrated into discharge device for filled bags
FR2578386A1 (en) Method and machine for filling a series of moulds for making cheeses
EP1270421A1 (en) Method and device for continuous distribution and aligned storage of elongated products
BE1004046A3 (en) Pulverulent mass metering and conveyance device
US1904652A (en) Weighing and filling machine
IT201600119933A1 (en) Molding system for abrasive discs with weight filling
WO2002066327A1 (en) Installation for the high-speed packaging of a liquid product
CN103884559B (en) Division machine
BE364411A (en)

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180205

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190612

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1196227

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602016023426

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200302

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200130

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200131

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200130

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20191030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200229

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602016023426

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1196227

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602016023426

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200920

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200920

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200930

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200920

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200920

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191030

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20240820

Year of fee payment: 9