EP1178004A1 - Collecting, cleaning and calibrating unit for aluminium production electrolytic cells - Google Patents
Collecting, cleaning and calibrating unit for aluminium production electrolytic cells Download PDFInfo
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- EP1178004A1 EP1178004A1 EP00420176A EP00420176A EP1178004A1 EP 1178004 A1 EP1178004 A1 EP 1178004A1 EP 00420176 A EP00420176 A EP 00420176A EP 00420176 A EP00420176 A EP 00420176A EP 1178004 A1 EP1178004 A1 EP 1178004A1
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- buckets
- cleaning
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- chassis
- shovel
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- 238000004140 cleaning Methods 0.000 title claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000004411 aluminium Substances 0.000 title 1
- 230000033001 locomotion Effects 0.000 claims abstract description 18
- 238000005868 electrolysis reaction Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 7
- 230000003213 activating effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract 1
- 206010039509 Scab Diseases 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 229910001610 cryolite Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/14—Grabs opened or closed by driving motors thereon
- B66C3/16—Grabs opened or closed by driving motors thereon by fluid motors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
- E02F3/4135—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device with grabs mounted directly on a boom
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Sampling And Sample Adjustment (AREA)
- Cleaning In General (AREA)
Abstract
Description
L'invention concerne le domaine de la production d'aluminium par électrolyse ignée, et plus particulièrement la gestion de certaines étapes du fonctionnement de telles installations.The invention relates to the field of aluminum production by igneous electrolysis, and more particularly the management of certain stages of the operation of such facilities.
Elle concerne plus particulièrement une unité de collecte des parties solides, en suspension ou non dans le bain d'électrolyse, et notamment des blocs d'anodes dégrafés de la tige sur laquelle elles sont fixées, mais également de nettoyage et de calibrage de l'orifice laissé vacant par l'anode remplacée.It relates more particularly to a unit for collecting solid parts, in particular suspension or not in the electrolysis bath, and in particular anode blocks removed from the rod on which they are fixed, but also from cleaning and calibration of the orifice left vacant by the replaced anode.
De manière connue, la production d'aluminium par électrolyse ignée met en oeuvre
l'électrolyse de l'aluminium dans un bain de cryolithe fondu selon la réaction :
Cette réaction met en oeuvre un bain en fusion comprenant un mélange de cryolithe et d'alumine, et dont la température est généralement supérieure à 800°C. Compte-tenu des énergies mises en oeuvre et afin de limiter au maximum les pertes inhérentes aux phases de redémarrage, les installations mettant en oeuvre cette technologie fonctionnent en général en continu, au niveau de séries de cuves d'aluminium, dont le nombre et les dimensions sont fonction d'une part, de l'ampérage disponible du courant électrique continu alimentant les cuves, et d'autre part, de la quantité de production souhaitée.This reaction uses a molten bath comprising a mixture of cryolite and alumina, and whose temperature is generally above 800 ° C. Considering energies used and in order to minimize the losses inherent in restart phases, installations using this technology generally operate continuously, at the level of series of aluminum tanks, of which the number and the dimensions depend on the one hand, on the available amperage of the direct electric current supplying the tanks, and on the other hand, the amount of desired production.
Régulièrement, il convient de procéder au remplacement des différentes anodes, le plus souvent réalisées en carbone, au niveau de chacune des cuves, sans pour autant arrêter la réaction d'électrolyse.Regularly, the different anodes should be replaced, the more often made of carbon, at the level of each tank, without stop the electrolysis reaction.
De par le procédé mis en oeuvre, à savoir l'électrolyse ignée, il se forme à la surface supérieure du bain une croûte dure de cryolithe fluorée et d'alumine, cette croûte présentant l'avantage de conserver la chaleur au sein du bain et donc de constituer une enveloppe calorifuge. De fait, l'extraction des anodes usées hors du bain nécessite en premier lieu la rupture de cette croûte. Cette rupture engendre la formation de morceaux ou parties solides surnageant ou en suspension dans le bain d'électrolyse, et qu'il est nécessaire de collecter au moyen d'un outil traditionnellement dénommé « pelle ». Due to the process used, namely igneous electrolysis, it forms on the surface top of the bath a hard crust of fluorinated cryolite and alumina, this crust having the advantage of retaining heat within the bath and therefore of constituting a heat-insulating envelope. In fact, the extraction of spent anodes from the bath first requires the breaking of this crust. This rupture generates the formation of pieces or solid parts supernatant or suspended in the bath electrolysis, and which it is necessary to collect using a tool traditionally called "shovel".
Cette pelle doit également préparer l'espace, et les conditions nécessaires à l'introduction d'une anode neuve en lieu et place de l'anode usée à remplacer. Cette préparation consiste également à calibrer l'espace nécessaire à la mise en place d'une telle anode neuve. En effet, l'érosion de la section généralement rectangulaire du carbone constitutif de l'anode, induit de fait la réduction de ladite section par rapport à une anode neuve, notamment du fait de la disparition progressive des parties angulaires, qui deviennent arrondies.This shovel must also prepare the space, and the conditions necessary for the introduction of a new anode in place of the used anode to be replaced. This preparation also involves calibrating the space required to set up a like a new anode. Indeed, the erosion of the generally rectangular section of the constituent carbon of the anode, induces in fact the reduction of said section compared to a new anode, in particular due to the progressive disappearance of the parts angular, which become rounded.
Cette transformation est inhérente à la consommation du carbone constitutif des anodes, par le processus d'électrolyse mis en oeuvre. L'espace ainsi dégagé entre les blocs de carbone constitutifs des anodes est occupé par du bain qui se solidifie en surface et forme la croûte précitée, dont la rupture est nécessaire pour permettre d'une part, le retrait de l'anode usée, et d'autre part, la mise en place d'une nouvelle anode.This transformation is inherent in the consumption of the constituent carbon of anodes, by the electrolysis process implemented. The space thus cleared between carbon blocks constituting the anodes is occupied by the bath which solidifies in surface and form the aforementioned crust, the rupture of which is necessary to allow on the one hand, the removal of the spent anode, and on the other hand, the installation of a new anode.
Ainsi, lors de l'enlèvement de l'anode usée, les croûtes qui adhèrent à celles-ci sont préalablement brisées au moyen d'un outil approprié, appelé piqueur de croûte, et des morceaux de croûte plus ou moins gros, tombent dans le bain, flottent à la surface de celui-ci et partant, empêchent la mise en place d'une anode neuve.Thus, during the removal of the spent anode, the crusts which adhere to them are previously broken using an appropriate tool, called a crust breaker, and more or less large pieces of crust, fall into the bath, float on the surface of this and therefore prevent the installation of a new anode.
Par ailleurs, des blocs de carbone plus ou moins volumineux, peuvent également flotter dans le bain, suite à l'opération d'arrachage proprement dit de l'anode.In addition, more or less bulky carbon blocks can also float in the bath, following the actual tearing operation of the anode.
Enfin, sur la surface de la cathode, c'est à dire le fond de la cuve, se déposent des boues provenant du bain électrolytique, que l'on souhaite enlever car celles-ci augmentent la résistance électrique et partant, réduisent le rendement de production de la cuve.Finally, on the surface of the cathode, i.e. the bottom of the tank, are deposited sludge from the electrolytic bath, which we want to remove because it increase electrical resistance and hence reduce production efficiency of the tank.
La pelle remplit donc une fonction de collecte d'une part, de nettoyage d'autre part, et enfin de calibrage. Afin d'assurer ces différentes fonctions, il est connu de mettre en oeuvre des godets articulés, dont l'actionnement induit le rapprochement de leurs lèvres ménagées au niveau de leur bord libre, et partant, la constitution d'une pelle. Or, ces godets sont articulés sur un châssis, de sorte que l'actionnement de l'embiellage traditionnellement mis en oeuvre pour assurer la fermeture des godets, induit le rapprochement des deux lèvres l'une de l'autre, ces dernières décrivant un arc de cercle dont la concavité est dirigée vers le haut. The shovel therefore fulfills a collection function on the one hand, cleaning on the other hand, and finally calibration. In order to perform these various functions, it is known to put using articulated buckets, the actuation of which brings their lips formed at their free edge, and hence the constitution of a shovel. However, these buckets are articulated on a chassis, so that the actuation of the crankshaft traditionally used to ensure the closing of the buckets, induces the bringing together of the two lips from each other, the latter describing a arc of a circle whose concavity is directed upwards.
Comme les lèvres sont destinées à assurer un raclage doux du fond de la cuve, c'est à dire de la cathode, et compte-tenu en outre du poids des godets, de leur mécanisme d'actionnement, et de manière générale du poids de la pelle, ce mouvement circulaire est susceptible de détériorer cette cathode et partant, la cuve elle-même.As the lips are intended to ensure a gentle scraping of the bottom of the tank, it is say of the cathode, and taking into account in addition the weight of the buckets, of their mechanism actuation, and generally the weight of the shovel, this circular movement is likely to damage this cathode and hence the tank itself.
De fait, et afin d'éviter une telle détérioration, le positionnement en altitude des pelles traditionnelles est choisie de telle sorte que lorsque le godet est fermé, les lèvres affleurent le fond de la cathode. En d'autres termes, les lèvres ne peuvent assurer un raclage efficace du fond de la cuve qu'au seul niveau de leur zone de fermeture, si bien qu'à la longue, il est nécessaire de vidanger les cuves pour assurer un nettoyage effectif de celle-ci, se traduisant donc pas un arrêt de l'installation, faute de quoi, on aboutit à une baisse significative du rendement desdites installations.In fact, and in order to avoid such deterioration, the altitude positioning of the traditional shovels is chosen so that when the bucket is closed, the lips are flush with the bottom of the cathode. In other words, the lips cannot ensure effective scraping of the bottom of the tank only at their level of closure, so that over time it is necessary to empty the tanks to ensure effective cleaning thereof, thus resulting in a shutdown of the installation, failing which results in a significant drop in the yield of said installations.
Par ailleurs, la pelle étant destinée à fonctionner en milieu hostile et agressif (température du bain électrolytique voisine de 800 °C, vapeurs fluorées très acides, etc..), il n'est pas concevable de faire appel à des capteurs pour gérer la course de la pelle en altitude, en fonction du degré de fermeture des godets.Furthermore, the shovel being intended to operate in hostile and aggressive environments (temperature of the electrolytic bath close to 800 ° C., highly acidic fluorinated vapors, etc.), it is not conceivable to use sensors to manage the stroke of the excavator at altitude, depending on the degree of closure of the buckets.
L'objet de l'invention est de s'affranchir de ces inconvénients. Elle vise une unité de collecte, de nettoyage et de calibrage des cuves d'électrolyse, et plus précisément des orifices anodiques lors du remplacement des anodes, qui permet tout à la fois d'assurer un calibrage de ces orifices, la collecte des déchets inhérents à la rupture de la croûte qui se constitue à la surface du bain, et par ailleurs, et le nettoyage du fond de la cuve par raclage.The object of the invention is to overcome these drawbacks. It targets a unit of collection, cleaning and calibration of electrolytic cells, and more precisely anode holes when replacing the anodes, which allows both ensure a calibration of these orifices, the collection of waste inherent in the rupture of the crust that forms on the surface of the bath, and moreover, and the cleaning of the bottom of the tank by scraping.
Cette unité comprend deux godets articulés au niveau de l'extrémité inférieure d'un châssis, mobile en translation verticale, le bord libre de chacun desdits godets étant susceptible d'être animé d'un mouvement circulaire au moyen d'un embiellage de fermeture et d'ouverture.This unit includes two articulated buckets at the lower end of a chassis, movable in vertical translation, the free edge of each of said buckets being capable of being driven in a circular motion by means of a connecting rod closing and opening.
Selon l'invention, l'unité comprend un premier châssis, solidarisé à un mât à translation verticale, dénommé châssis support de pelle, et un second châssis, dénommé châssis support des godets, relié mécaniquement audit châssis support de pelle, et susceptible de se translater par rapport à celui-ci, ledit châssis support des godets intégrant l'embiellage de fermeture et d'ouverture des godets, lesdits godets étant articulés à l'extrémité inférieure de ce châssis. According to the invention, the unit comprises a first chassis, secured to a mast to vertical translation, called excavator support chassis, and a second chassis, called bucket support frame, mechanically connected to said support frame shovel, and capable of translating with respect thereto, said support frame for buckets incorporating the connecting and closing linkage of the buckets, said buckets being articulated at the lower end of this chassis.
En d'autres termes, l'invention consiste à adjoindre au support traditionnel des outils proprement dits constitutifs de la pelle, un châssis lié audit support, mais néanmoins mobile par rapport à celui-ci, cette mobilité étant destinée à permettre la réalisation d'un mouvement simultané avec l'opération de fermeture des godets, et propre à compenser le mouvement circulaire des lèvres desdits godets, de telle sorte à conférer aux lèvres, un mouvement sensiblement rectiligne, parallèle au plan du fond de la cuve.In other words, the invention consists in adding to the traditional support tools properly speaking constituting the shovel, a chassis linked to said support, but nevertheless movable relative to it, this mobility being intended to allow the realization of a simultaneous movement with the closing operation of the buckets, and suitable for compensate for the circular movement of the lips of said cups, so as to impart to the lips, a substantially rectilinear movement, parallel to the plane of the bottom of the tank.
Ce faisant, on confère à la pelle l'une des fonctions pour laquelle elle est requise, à savoir l'opération du raclage du fond de cuve.In doing so, the shovel is given one of the functions for which it is required, know the operation of scraping the bottom of the tank.
Selon une caractéristique de l'invention, l'embiellage de fermeture des godets comprend une bielle de transmission d'efforts, dont l'une des extrémités est articulée directement ou indirectement sur lesdits godets, afin de conférer à leur bord inférieur libre un mouvement circulaire lors de la fermeture de la pelle, et dont l'autre extrémité est articulée sur une bielle rotative, elle-même articulée sur le châssis support des godets, ladite bielle rotative étant reliée mécaniquement au châssis porte-pelle au moyen d'une bielle de compensation, et étant par ailleurs actionnée en rotation au moyen d'un vérin d'actionnement, dont le point d'application est solidaire du châssis support des godets.According to a characteristic of the invention, the connecting rods for closing the buckets includes a force transmission rod, one end of which is articulated directly or indirectly on said buckets, in order to impart to their lower edge free circular movement when closing the shovel, and the other end is articulated on a rotating rod, itself articulated on the chassis bucket support, said rotary connecting rod being mechanically connected to the excavator support frame by means of a compensating rod, and also being actuated in rotation by means of an actuating cylinder, the point of application of which is secured to the bucket support frame.
Selon une caractéristique avantageuse de l'invention, on sous-dimensionne le vérin d'actionnement au moyen d'un ressort taré, prenant appui sur le châssis porte-pelle, et susceptible de reprendre au niveau du corps du vérin, une partie des efforts, et notamment la compensation de la masse constituée par l'ensemble mobile, c'est à dire l'embiellage de fermeture des godets et les godets eux-mêmes. Ce ressort peut être remplacé par un organe équivalent, tel que par exemple un contrepoids guidé associé à un câble et une poulie de renvoi.According to an advantageous characteristic of the invention, the jack is undersized actuation by means of a calibrated spring, bearing on the shovel carrier frame, and capable of resuming at the level of the cylinder body, part of the forces, and in particular the compensation of the mass constituted by the mobile assembly, it is say the connecting rod closure of the buckets and the buckets themselves. This spring can be replaced by an equivalent member, such as for example a guided counterweight associated with a cable and a return pulley.
La manière dont l'invention peut être réalisée et les avantages qui en découlent ressortiront mieux de l'exemple de réalisation qui suit donné à titre indicatif et non limitatif à l'appui des figures annexées.The manner in which the invention can be implemented and the advantages derived therefrom will emerge better from the example of embodiment which follows given by way of indication and not limiting in support of the appended figures.
La figure 1 est une représentation schématique vue de face d'une installation de production d'aluminium par électrolyse ignée, sur laquelle on a représenté l'unité de collecte et de nettoyage conforme à l'invention, en position non opérationnelle. La figure 2 est une vue latérale plus détaillée de ladite unité, toujours en position non-opérationnelle. Figure 1 is a schematic front view of an installation of production of aluminum by igneous electrolysis, on which the unit of collection and cleaning according to the invention, in a non-operational position. Figure 2 is a more detailed side view of said unit, still in position inoperative.
La figure 3 est une vue analogue à la figure 2, mais l'unité de collecte étant en
position opérationnelle.
Les figures 4, 5 et 6 sont des représentations schématiques de détail de ladite unité,
les godets étant respectivement en position complètement ouverte, intermédiaire et
complètement fermée.Figure 3 is a view similar to Figure 2, but the collection unit being in the operational position.
Figures 4, 5 and 6 are schematic representations of detail of said unit, the cups being respectively in the fully open, intermediate and completely closed position.
On a représenté au sein de la figure 1, une vue schématique vue de face, du hall (1) d'une installation de production d'aluminium, mettant en oeuvre la technologie dite de l'électrolyse ignée.There is shown in Figure 1, a schematic front view of the hall (1) an aluminum production facility, using so-called technology of igneous electrolysis.
On a représenté par la référence (7), le front d'une série de cuves d'électrolyse, sensiblement identiques les unes aux autres, et bien évidemment montées en série, afin de permettre la réalisation du processus de l'électrolyse proprement dite. Ces cuves sont surmontées d'un chemin de roulement (3), sur lequel est susceptible de se déplacer un pont roulant (2), destiné de manière connue, à permettre le déplacement d'un certain nombre d'outils propres à permettre le fonctionnement de l'installation.The reference (7) represents the front of a series of electrolysis cells, substantially identical to each other, and obviously connected in series, in order to allow the actual electrolysis process to take place. These tanks are surmounted by a raceway (3), on which is likely to be move an overhead crane (2), intended in a known manner, to allow movement of a certain number of specific tools to allow the operation of the installation.
Il est notamment destiné à permettre le déplacement selon une direction perpendiculaire à la direction de progression du pont, d'un chariot (4), reposant sur le pont (2), ledit chariot portant un outil destiné à permettre le nettoyage de chacune des cuves, et la préparation de celles-ci lors des phases de remplacement des anodes usées au niveau desdites cuves.It is especially intended to allow movement in a direction perpendicular to the direction of travel of the bridge, of a carriage (4), resting on the bridge (2), said carriage carrying a tool intended to allow the cleaning of each of tanks, and the preparation thereof during the anode replacement phases worn at said tanks.
Dans le langage traditionnel utilisé dans le domaine considéré, cet outil est dénommé « pelle ».In the traditional language used in the field considered, this tool is called " shovel ".
Sur la figure 1, on a représenté par la référence générale (6) la pelle proprement dite, en position escamotée, c'est à dire non opérationnelle.In FIG. 1, the general reference (6) represents the excavator proper, in the retracted position, that is to say not operational.
En relation avec les figures 2 et 3, dans lesquelles l'outil est représenté en position latérale, on a matérialisé la pelle (6) respectivement en position escamotée, donc non opérationnelle, et en position opérationnelle.In relation to Figures 2 and 3, in which the tool is shown in position lateral, the shovel (6) has been materialized respectively in the retracted position, therefore not operational, and in operational position.
Ainsi qu'on peut l'observer, cet outil est monté sur un mat télescopique (5), si la course de la pelle le nécessite, ledit mât étant actionné au moyen d'un système de levage électro-mécanique, hydraulique ou pneumatique (32). Ce mât télescopique (5) est solidaire du chariot (4), et fonctionne en association avec des organes codeurs (non représentés), propres à déterminer de manière précise l'altitude de la pelle, et notamment des godets (16, 17) qui la constituent. As can be seen, this tool is mounted on a telescopic mast (5), if the excavator stroke requires it, said mast being actuated by means of a electro-mechanical, hydraulic or pneumatic lifting (32). This telescopic mast (5) is integral with the carriage (4), and operates in association with coding members (not shown), suitable for determining the height of the excavator precisely, and in particular buckets (16, 17) which constitute it.
En effet, ainsi que déjà mentionné en préambule de la présente invention, il convient, au moyen de cet outil, de remplir un certain nombre de fonctions, mais cependant, d'éviter l'altération de la cathode constituée par le fond des cuves électrolyse. On doit donc disposer en permanence de la hauteur effective desdits godets, d'une part lors de l'approche de la pelle (6) au niveau de l'ouverture supérieure des cuves, définissant une zone d'introduction, et d'autre part, lorsque les godets sont situés à l'intérieur desdits cuves.Indeed, as already mentioned in the preamble to the present invention, it is appropriate, by means of this tool, to fulfill a certain number of functions, but however, avoid alteration of the cathode formed by the bottom of the electrolytic cells. We must therefore permanently have the effective height of said buckets, on the one hand when the shovel (6) approaches the level of the upper opening of the tanks, defining an introduction zone, and on the other hand, when the buckets are located at the interior of said tanks.
A l'extrémité du mat télescopique (5) est solidarisé un premier châssis (10), dénommé châssis porte pelle. Selon une caractéristique de l'invention, ce châssis (10) est associé à un châssis (11), dénommé par la suite, châssis support des godets, au moyen de deux biellettes, respectivement (12) et (13), positionnées dans l'exemple décrit, à l'extrémité inférieure et supérieure desdits châssis.At the end of the telescopic mast (5) is secured a first frame (10), referred to as a shovel holder chassis. According to a characteristic of the invention, this chassis (10) is associated with a chassis (11), hereinafter referred to as bucket support chassis, by means of two rods, respectively (12) and (13), positioned in the example described, at the lower and upper end of said chassis.
Ces biellettes sont articulées respectivement au niveau du châssis (10) et (11), selon des axes d'articulation parallèles entre eux.These links are articulated respectively at the frame (10) and (11), according to hinge axes parallel to each other.
Elles sont destinées à permettre un mouvement relatif du châssis support des godets (11) par rapport au châssis porte-pelle (10), ainsi que cela sera décrit de manière beaucoup plus détaillée ci-après.They are intended to allow relative movement of the bucket support frame (11) relative to the excavator carrier frame (10), as will be described so much more detailed below.
Ainsi qu'on peut l'observer sur les figures 2 et 3, l'extrémité du châssis support des godets (11) reçoit les deux godets (16) et (17), constitutifs de la pelle (6) proprement dite, et dont l'écartement maximum, tel que représenté en figure 3, correspond sensiblement à l'encombrement généré par une anode neuve.As can be seen in Figures 2 and 3, the end of the support frame for buckets (11) receives the two buckets (16) and (17), constituting the shovel (6) properly said, and whose maximum spacing, as shown in Figure 3, corresponds substantially to the space generated by a new anode.
Une telle anode a été représentée sur les figures 2 et 3 par la référence (20). La tige (21) de l'anode est fixée au cadre anodique (33), alimentant de manière connue lesdits anodes en électricité, moyen de connecteurs (non représentés). Les anodes (20) s'usent au cours du processus électrolytique, nécessitant de fait leur remplacement périodique.Such an anode has been represented in FIGS. 2 and 3 by the reference (20). The rod (21) of the anode is fixed to the anode frame (33), supplying in known manner said anodes in electricity, by means of connectors (not shown). The anodes (20) wear out during the electrolytic process, effectively requiring their periodic replacement.
On a représenté en relation avec les figures 4, 5 et 6 les différents organes entrant dans la constitution de la pelle (6) ainsi que leur mode de fonctionnement.There is shown in relation to Figures 4, 5 and 6 the different organs entering in the constitution of the shovel (6) and their mode of operation.
Tout d'abord, il convient de préciser que les godets (16) et (17) sont chacun articulés sur le châssis support des godets (11), au niveau d'un axe d'articulation (30). De la sorte, le bord (31) constituant lèvre, de chacun des godets, est susceptible de par cette articulation, de décrire un mouvement circulaire par rapport audit axe (30). First, it should be noted that the buckets (16) and (17) are each articulated on the bucket support frame (11), at a hinge pin (30). Of the so, the lip edge (31), of each of the cups, is susceptible to this articulation, to describe a circular movement with respect to said axis (30).
Pour ce faire, un embiellage de fermeture (14), relié par le biais d'une bielle (23) articulée au niveau d'un axe d'articulation (15) à une bielle rotative d'actionnement (18), permet d'assurer le mouvement de chacun des godets (16) et (17), ainsi qu'on peut bien l'observer en liaison avec les figures 4 à 6.To do this, a closing linkage (14), connected by means of a connecting rod (23) articulated at a hinge pin (15) to a rotary actuating rod (18), ensures the movement of each of the buckets (16) and (17), as well as can well observe it in conjunction with Figures 4 to 6.
En d'autres termes, l'embiellage de fermeture est constitué d'une part, par la bielle intermédiaire (23), et d'autre part, par deux biellettes (14, 14'), articulées respectivement sur les godets (16) et (17), et à l'extrémité inférieure de la bielle intermédiaire (23). Dans l'exemple décrit, la biellette (14') est de forme arquée, afin de tenir compte des obstacles qu'elle est susceptible de rencontrer durant sa course.In other words, the connecting rod assembly consists on the one hand, by the connecting rod intermediate (23), and secondly, by two links (14, 14 '), articulated respectively on the buckets (16) and (17), and at the lower end of the connecting rod intermediate (23). In the example described, the link (14 ') is of arcuate shape, so take into account the obstacles it is likely to encounter during its race.
L'autre extrémité de la bielle intermédiaire (23) est articulée par un axe d'articulation (22) sur la bielle rotative d'actionnement (18) présentant un profil particulier.The other end of the intermediate link (23) is articulated by a hinge pin (22) on the rotary actuating rod (18) having a particular profile.
En effet, cette bielle présente une forme sensiblement triangulaire et présente notamment trois branches, à l'extrémité desquelles sont articulés trois organes différents. Ainsi que déjà mentionné, à l'extrémité de la première branche est articulée l'extrémité de la bielle intermédiaire (23) agissant sur l'embiellage de fermeture (14).Indeed, this connecting rod has a substantially triangular shape and has in particular three branches, at the end of which are articulated three organs different. As already mentioned, at the end of the first branch is articulated the end of the intermediate connecting rod (23) acting on the crankshaft closure (14).
La branche opposée reçoit l'extrémité libre de la tige d'un vérin d'activation (25), articulée sur un axe d'articulation (24) ménagé à l'extrémité de ladite branche. Le vérin (25) est destiné à assurer la rotation de la bielle rotative d'activation (18), par rapport à son axe d'activation (19). Cet axe (19) est solidaire du châssis support des godets (11). Le point d'application de ce vérin est solidaire du châssis support des godets (11).The opposite branch receives the free end of the rod of an activation jack (25), articulated on a hinge pin (24) formed at the end of said branch. The cylinder (25) is intended to ensure the rotation of the rotary activation rod (18), by relative to its activation axis (19). This axis (19) is integral with the support frame of the buckets (11). The point of application of this jack is integral with the support frame of the buckets (11).
En outre, afin de limiter le dimensionnement des organes constitutifs du vérin (25), compte tenu des efforts à réaliser d'une part, et du poids des deux godets (16) et (17) et de l'embiellage de fermeture (14, 14', 23) d'autre part, on lui associe un ressort taré (29), reposant sur le châssis porte-pelle (10), et solidarisé au corps dudit vérin (25). Plus précisément, le ressort (29) est monté sur une rotule (34), solidaire du châssis porte-pelle (10). De la sorte, il est possible au ressort de basculer, pour suivre la course du corps du vérin, celui-ci pivotant également compte tenu de sa solidarisation à l'extrémité de l'une des branches de la bielle rotative (18). On peut tout particulièrement bien observer ce mouvement de basculement sur les figures 4 à 6, en fonction du degré de rotation de ladite bielle (18). De fait, l'action du ressort (29) est toujours optimum. In addition, in order to limit the dimensioning of the components of the jack (25), taking into account the efforts to be made on the one hand, and the weight of the two buckets (16) and (17) and the connecting rod assembly (14, 14 ', 23) on the other hand, a spring is associated with it calibrated (29), resting on the shovel carrier frame (10), and secured to the body of said cylinder (25). More specifically, the spring (29) is mounted on a ball joint (34), integral with the excavator support frame (10). In this way, it is possible for the spring to tilt, to follow the stroke of the cylinder body, the latter also pivoting given its joining at the end of one of the branches of the rotary connecting rod (18). We can very particularly observe this tilting movement in Figures 4 to 6, depending on the degree of rotation of said connecting rod (18). In fact, the action of the spring (29) is always optimum.
Le vérin (25) est actionné au moyen d'une source pneumatique d'air comprimé (non représentée) s'étendant à l'intérieur du mat télescopique (5).The cylinder (25) is actuated by means of a pneumatic source of compressed air (not shown) extending inside the telescopic mast (5).
Enfin, à l'extrémité libre de la troisième branche de la bielle rotative d'activation (18), s'étendant sensiblement perpendiculaire aux deux premières, vient s'articuler sur un axe (26) une bielle dite de compensation (27), dont l'autre extrémité vient s'articuler sur un axe (28) ménagé sur le châssis porte-pelle (10).Finally, at the free end of the third branch of the rotating activation rod (18), extending substantially perpendicular to the first two, is articulated on an axis (26) a so-called compensation rod (27), the other end of which comes hinge on an axis (28) formed on the shovel carrier frame (10).
Il va être décrit plus en détail le mode de fonctionnement de cette pelle, conformément à l'invention.The mode of operation of this shovel will be described in more detail, according to the invention.
En figure 4, les godets (16, 17) sont en position ouverte maximum. Selon cette configuration, le plan contenant la lèvre (31) du dit godet (17) s'étend sensiblement perpendiculairement par rapport au fond de la cathode, c'est à dire de la cuve.In Figure 4, the buckets (16, 17) are in the maximum open position. According to this configuration, the plane containing the lip (31) of said bucket (17) extends substantially perpendicular to the bottom of the cathode, that is to say of the tank.
La course du vérin d'activation (25) est alors maximum et, corollairement, l'embiellage de fermeture (14, 14', 23) a atteint son niveau de sa course minimum inférieure.The stroke of the activation cylinder (25) is then maximum and, consequently, the closing crankshaft (14, 14 ', 23) has reached its level of its minimum stroke lower.
Parallèlement, les deux bielles (12) et (13), solidarisant le châssis support des godets (11) au châssis porte-pelle (10) sont sensiblement horizontales.In parallel, the two connecting rods (12) and (13), joining the bucket support frame (11) to the shovel carrier frame (10) are substantially horizontal.
Lorsque l'on active le vérin activateur (25), on engendre une rotation de la bielle rotative d'activation (18) selon le sens des aiguilles d'une montre, sur la figure 5, provoquant tout d'abord, un commencement de remontée de la bielle intermédiaire (23), et partant de l'embiellage de fermeture (14, 14') vers le haut, se traduisant par un début de fermeture des godets. Corollairement, cette action induit la rotation dans le sens trigonométrique de la bielle de compensation (27), jusqu'à atteindre sa hauteur maximum représentée en figure 5.When the activating cylinder (25) is activated, the rod is rotated rotary activation (18) in a clockwise direction, in FIG. 5, first of all causing the intermediate rod to rise (23), and starting from the closing linkage (14, 14 ') upwards, resulting in beginning of closing of the buckets. As a corollary, this action induces rotation in the trigonometric direction of the compensation rod (27), until reaching its maximum height shown in figure 5.
Compte tenu de l'articulation de ladite bielle de compensation (27) sur le châssis porte-pelle (10), cette rotation engendre une translation vers le haut du châssis support des godets (11), ainsi que cela se matérialise sur la figure 5 par l'inclinaison des bielles (12) et (13) de solidarisation dudit châssis support des godets (11) sur le châssis porte-pelle (10). Taking into account the articulation of said compensating rod (27) on the chassis shovel holder (10), this rotation generates an upward translation of the chassis bucket support (11), as shown in Figure 5 by the inclination connecting rods (12) and (13) for securing said bucket support frame (11) to the excavator support frame (10).
Cette translation vers le haut du châssis support des godets (11) engendre corollairement la remontée de la lèvre (31) des godets (16) et (17). De sorte que nonobstant la course circulaire desdites lèvres, on peut aboutir à un déplacement de celle-ci selon un plan horizontal, sensiblement parallèle au fond de la cuve, en jouant sur la compensation exercée par le déplacement relatif du châssis support des godets (11) par rapport au châssis porte-pelle (10).This upward translation of the bucket support frame (11) generates as a corollary, the raising of the lip (31) of the cups (16) and (17). So that notwithstanding the circular stroke of said lips, it is possible to result in a displacement of this in a horizontal plane, substantially parallel to the bottom of the tank, playing on the compensation exerted by the relative displacement of the bucket support chassis (11) relative to the shovel carrier frame (10).
Lorsque la course du vérin (25) est terminée (figure 6), les deux godets (16) et (17) viennent au contact l'un de l'autre, notamment au niveau de leur lèvre respective (31), assurant ainsi la fermeture de la pelle, et parallèlement, la fin de la rotation de la bielle de compensation (27) dans le sens trigonométrique, cette fin étant inhérente à la fin de course possible de la tige dans le vérin (25). Corollairement, compte tenu de la course impartie à ladite bielle de compensation (27), une légère redescente desdits godets, et partant des lèvres (31) est assurée.When the cylinder stroke (25) is finished (Figure 6), the two buckets (16) and (17) come into contact with each other, especially at their respective lip (31), thus ensuring the closing of the shovel, and in parallel, the end of the rotation of the compensating rod (27) in the counterclockwise direction, this end being inherent in the possible end of travel of the rod in the jack (25). As a corollary, taking into account the stroke imparted to said compensating rod (27), a slight descent of said cups, and starting from the lips (31) is ensured.
Compte-tenu du profil particulier des godets, on compense ainsi l'arc de cercle de concavité dirigée vers le haut, décrit par lesdites lèvres (31), par un mouvement inverse du châssis support des godets (11), de telle sorte à conférer en résultat final une progression relativement plane desdites lèvres (31) lors de la fermeture de la pelle (6), et ce, au moyen de la bielle de compensation (27).Given the particular profile of the buckets, this compensates for the circular arc of concavity directed upwards, described by said lips (31), by a movement reverse of the bucket support frame (11), so as to give the final result a relatively flat progression of said lips (31) during the closing of the shovel (6), by means of the compensating rod (27).
Bien évidemment, les dimensions de ces différentes bielles sont fonction du profil particulier des godets, et des dimensions respectives des cuves.Obviously, the dimensions of these different connecting rods are a function of the profile particular of the buckets, and of the respective dimensions of the tanks.
Cela dit, ces dimensions, une fois le principe établi, sont parfaitement déterminables par l'homme du métier.That said, these dimensions, once the principle is established, are perfectly determinable by the skilled person.
Par ce biais, la pelle assure la fonction qui lui est assignée, à savoir notamment la collecte des différents débris et autres morceaux provenant des anodes ou de la croûte supérieure du bain, sans altérer la cathode, c'est à dire le fond de la cuve, tout en permettant un raclage doux de celle-ci.In this way, the shovel performs the function assigned to it, namely in particular the collection of different debris and other pieces from the anodes or the crust upper part of the bath, without altering the cathode, i.e. the bottom of the tank, while allowing a gentle scraping thereof.
Ce résultat est obtenu au moyen d'un dispositif simple à mettre en oeuvre et relativement rustique, permettant notamment de résister aux contraintes mécaniques et techniques dans un environnement hostile dans lesquels ils sont destinés à fonctionner.This result is obtained by means of a device which is simple to implement and relatively rustic, allowing in particular to withstand mechanical stresses and techniques in a hostile environment in which they are intended to function.
Claims (7)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES00420176T ES2255963T3 (en) | 2000-08-04 | 2000-08-04 | COLLECTION, CLEANING AND CALIBRATION UNIT OF ELECTROLYSIS CUBES USED FOR ALUMINUM PRODUCTION. |
| EP00420176A EP1178004B1 (en) | 2000-08-04 | 2000-08-04 | Collecting, cleaning and calibrating unit for aluminium production electrolytic cells |
| AT00420176T ATE319648T1 (en) | 2000-08-04 | 2000-08-04 | REMOVAL, CLEANING, CALIBRATION DEVICE FOR ELECTROLYSIS CELLS USED IN ALUMINUM PRODUCTION |
| DE60026486T DE60026486T2 (en) | 2000-08-04 | 2000-08-04 | Extraction, cleaning, calibration device for electrolysis cells used in aluminum production |
| SI200030857T SI1178004T1 (en) | 2000-08-04 | 2000-08-04 | Collecting, cleaning and calibrating unit for aluminium production electrolytic cells |
| NO20014747A NO314635B1 (en) | 2000-08-04 | 2001-09-28 | Apparatus for the collection, cleaning and calibration of electrolytic crucibles used for aluminum production |
| NZ514587A NZ514587A (en) | 2000-08-04 | 2001-10-02 | Hinged bucket for collecting, cleaning and calibrating electrolysis pots used for aluminium production |
| CA2358368A CA2358368C (en) | 2000-08-04 | 2001-10-04 | Electrolytic cell collection, cleaning and calibrating unit used in aluminum production |
| US10/037,261 US6643957B2 (en) | 2000-08-04 | 2001-10-23 | Unit for the collection, cleaning and calibration of electrolysis pots used for aluminium production |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00420176A EP1178004B1 (en) | 2000-08-04 | 2000-08-04 | Collecting, cleaning and calibrating unit for aluminium production electrolytic cells |
| NO20014747A NO314635B1 (en) | 2000-08-04 | 2001-09-28 | Apparatus for the collection, cleaning and calibration of electrolytic crucibles used for aluminum production |
| NZ514587A NZ514587A (en) | 2000-08-04 | 2001-10-02 | Hinged bucket for collecting, cleaning and calibrating electrolysis pots used for aluminium production |
| CA2358368A CA2358368C (en) | 2000-08-04 | 2001-10-04 | Electrolytic cell collection, cleaning and calibrating unit used in aluminum production |
| US10/037,261 US6643957B2 (en) | 2000-08-04 | 2001-10-23 | Unit for the collection, cleaning and calibration of electrolysis pots used for aluminium production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1178004A1 true EP1178004A1 (en) | 2002-02-06 |
| EP1178004B1 EP1178004B1 (en) | 2006-03-08 |
Family
ID=27792300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00420176A Expired - Lifetime EP1178004B1 (en) | 2000-08-04 | 2000-08-04 | Collecting, cleaning and calibrating unit for aluminium production electrolytic cells |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6643957B2 (en) |
| EP (1) | EP1178004B1 (en) |
| AT (1) | ATE319648T1 (en) |
| CA (1) | CA2358368C (en) |
| DE (1) | DE60026486T2 (en) |
| ES (1) | ES2255963T3 (en) |
| NO (1) | NO314635B1 (en) |
| NZ (1) | NZ514587A (en) |
| SI (1) | SI1178004T1 (en) |
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| FR2940796A1 (en) * | 2009-01-08 | 2010-07-09 | Ecl | CONTAINER ATTACHING DEVICE FOR COLLECTING SOLID DEBRIS AND SWIVING AT THE END OF A MOBILE ARM, IN PARTICULAR DEVICE FOR ATTACHING ARTICULATED BUCKETS OF A CROSSED SHOVEL |
| FR2945296A1 (en) * | 2009-05-11 | 2010-11-12 | Ecl | DEVICE FOR COLLECTING THE SOLID DEBRIS PRESENT IN THE BATH AND LIQUID METAL OF AN ELECTROLYSIS TANK INTENDED FOR THE PRODUCTION OF ALUMINUM BY SCRAPPING THE BOTTOM OF THE SAME |
| WO2011070245A1 (en) | 2009-12-11 | 2011-06-16 | E.C.L. | Device intended for collecting solid debris in an electrolytic cell intended for the production of aluminium |
| CN105253769A (en) * | 2015-11-27 | 2016-01-20 | 株洲天桥起重机股份有限公司 | Slag fishing grab bucket for aluminum electrolysis lifting equipment |
| CN105502158A (en) * | 2015-12-18 | 2016-04-20 | 厦门理工学院 | Horizontal grab bucket device with grab track being straight line |
| CN107381342A (en) * | 2016-05-17 | 2017-11-24 | 湖南工业大学 | A kind of design method for realizing aluminium electroloysis slag grabbing bottom translation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017123895A1 (en) * | 2017-10-13 | 2019-04-18 | Albach Maschinenbau GmbH | Heavy lifting unit with a heavy load gripper performing a stroke, and a method of performing a gripping movement |
| CN109680304A (en) * | 2019-03-07 | 2019-04-26 | 新乡宏达冶金振动设备有限公司 | Double anode electrolyte automatically clears up system |
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- 2000-08-04 AT AT00420176T patent/ATE319648T1/en not_active IP Right Cessation
- 2000-08-04 EP EP00420176A patent/EP1178004B1/en not_active Expired - Lifetime
- 2000-08-04 DE DE60026486T patent/DE60026486T2/en not_active Expired - Lifetime
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- 2001-10-04 CA CA2358368A patent/CA2358368C/en not_active Expired - Lifetime
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| AU2009336620B2 (en) * | 2009-01-08 | 2015-06-04 | E.C.L. | Fastening Device For A Collector Of Solid Remains Swiveling At The End Of A Mobile Arm In Particular Fastening Device For Articulated Buckets Of A Crust Shovel |
| RU2508243C2 (en) * | 2009-01-08 | 2014-02-27 | Э.С.Л. | Fastener of containers for collection of solid fragments to turn at moving support end, particularly, fastener of hinged crust removal scoop |
| FR2940796A1 (en) * | 2009-01-08 | 2010-07-09 | Ecl | CONTAINER ATTACHING DEVICE FOR COLLECTING SOLID DEBRIS AND SWIVING AT THE END OF A MOBILE ARM, IN PARTICULAR DEVICE FOR ATTACHING ARTICULATED BUCKETS OF A CROSSED SHOVEL |
| US8756837B2 (en) | 2009-01-08 | 2014-06-24 | E.C.L. | Fastening device for a collector of solid remains swiveling at the end of a mobile arm in particular fastening device for articulated buckets of a crust shovel |
| WO2010079266A1 (en) | 2009-01-08 | 2010-07-15 | E.C.L. | Device for attaching containers for collecting solid debris and pivoting at the end of a mobile arm, in particular a device for attaching hinged buckets of a scale scoop |
| RU2522411C2 (en) * | 2009-05-11 | 2014-07-10 | Э.С.Л. | Device for collection of solid wastes contained in electrolytic melt and liquid metal of electrolysis bath intended for production of aluminium by scraping bath bottom |
| WO2010130892A1 (en) * | 2009-05-11 | 2010-11-18 | E.C.L. | Device for collecting the solid debris present in the bath and the liquid metal of an electrolysis cell intended for aluminium production, by scraping the bottom of said cell |
| CN102421943B (en) * | 2009-05-11 | 2014-06-04 | E.C.L.公司 | Device for collecting the solid debris present in the bath and the liquid metal of an electrolysis cell intended for aluminium production, by scraping the bottom of said cell |
| CN102421943A (en) * | 2009-05-11 | 2012-04-18 | E.C.L.公司 | Device for collecting the solid debris present in the bath and the liquid metal of an electrolysis cell intended for aluminium production, by scraping the bottom of said cell |
| FR2945296A1 (en) * | 2009-05-11 | 2010-11-12 | Ecl | DEVICE FOR COLLECTING THE SOLID DEBRIS PRESENT IN THE BATH AND LIQUID METAL OF AN ELECTROLYSIS TANK INTENDED FOR THE PRODUCTION OF ALUMINUM BY SCRAPPING THE BOTTOM OF THE SAME |
| AU2010247248B2 (en) * | 2009-05-11 | 2013-11-07 | E.C.L. | Device for collecting the solid debris present in the bath and the liquid metal of an electrolysis cell intended for aluminium production, by scraping the bottom of said cell |
| WO2011070245A1 (en) | 2009-12-11 | 2011-06-16 | E.C.L. | Device intended for collecting solid debris in an electrolytic cell intended for the production of aluminium |
| FR2953862A1 (en) * | 2009-12-11 | 2011-06-17 | Ecl | DEVICE FOR COLLECTING SOLID DEBRIS IN AN ELECTROLYSIS TANK FOR ALUMINUM PRODUCTION |
| CN105253769A (en) * | 2015-11-27 | 2016-01-20 | 株洲天桥起重机股份有限公司 | Slag fishing grab bucket for aluminum electrolysis lifting equipment |
| CN105502158A (en) * | 2015-12-18 | 2016-04-20 | 厦门理工学院 | Horizontal grab bucket device with grab track being straight line |
| CN105502158B (en) * | 2015-12-18 | 2018-03-23 | 厦门理工学院 | It is a kind of to capture the horizontal grab mechanisms that track is straight line |
| CN107381342A (en) * | 2016-05-17 | 2017-11-24 | 湖南工业大学 | A kind of design method for realizing aluminium electroloysis slag grabbing bottom translation |
Also Published As
| Publication number | Publication date |
|---|---|
| NO314635B1 (en) | 2003-04-22 |
| ES2255963T3 (en) | 2006-07-16 |
| SI1178004T1 (en) | 2006-08-31 |
| NZ514587A (en) | 2002-09-27 |
| NO20014747L (en) | 2003-03-31 |
| ATE319648T1 (en) | 2006-03-15 |
| DE60026486T2 (en) | 2006-08-24 |
| US6643957B2 (en) | 2003-11-11 |
| CA2358368A1 (en) | 2003-04-04 |
| DE60026486D1 (en) | 2006-05-04 |
| US20030106246A1 (en) | 2003-06-12 |
| CA2358368C (en) | 2011-01-25 |
| EP1178004B1 (en) | 2006-03-08 |
| NO20014747D0 (en) | 2001-09-28 |
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