DE60300977T2 - Operating machine for electrolysis cells in aluminum production - Google Patents

Description

Territory of invention

The The invention relates to the production of aluminum by fused-salt electrolysis after the Hall-Heroult-procedure. It concerns, in particular, the operating machinery mounted on an overhead crane, which are used in the electrolysis plants.

State of technology

The industrial extraction of the metal takes place by fused-salt electrolysis, i.e. by electrolysis of alumina, which in a bath of molten Cryolite, the so-called. Electrolyte bath, is dissolved, according to the well-known Hall-Héroult process. The electrolyte bath is contained in tubs, the so-called electrolysis tubs, consisting of a steel container, the lined with refractory and / or insulating material inside, and a cathode assembly at the bottom of the tub. Anodes made of carbon material are partially immersed in the bathroom. The entire arrangement consisting from an electrolytic tank, their anodes and the electrolyte bath Electrolysis cell called.

electrolysis works own a big one Number of electrolysis cells used in buildings, the electrolyte trap, placed in a row and over Connecting lines are electrically connected in series to the To optimize land use in the plants. The cells are in the Usually arranged so that they have two or more parallel rows form through external lines electrically connected to each other. The electrolysis current thus flows cascading from one cell to the next.

During the Operations are in an electrolysis plant interventions on the electrolysis cells necessary; this includes in particular the replacement of spent anodes with new anodes, the removal of liquid metal from the cells and the removal and addition of electrolyte. Around Perform interventions, modern plants are equipped with operating units, consisting from an overhead crane, which can be moved above and along the electrolysis cells is, and a control module, a slide and conveying and engaging organs (often Called tools), such. B. has blades and crane trains and is movable on the overhead crane. These operating units are often "operating machines for the Electrolysis "(" PTA "or" Pot Tending Assembly "or" PTM "or" Pot Tending Machine "in English).

The movement capacity However, the known operating units are limited, in particular because of the power supply cables, allow only limited linear or rotary movements.

The Applicant has therefore searched for control units with which These disadvantages can be avoided and remain reliable at the same time.

description the invention

The The invention relates to a rotary device for mechanical and electrical Connection between a transport module, typically a carriage, and funding and intervention organs of a factory for the production of aluminum by fused-salt electrolysis, which is characterized in that it has a so-called. Fixed frame with a hub or straight shaft, surrounding and around the hub rotatable sleeve, a rotatable about the sleeve first and second so-called. Bogie, electric rotary-sliding contacts between the racks and drive systems to the respective rotation of the racks to create a common axis.

• – ein sog. Festgestell mit einer Nabe oder "zentralen" Welle, welche eine Drehachse definiert,
• – eine Muffe, welche die Nabe umgibt und um diese und um die Drehachse drehbar ist,
• – ein erstes sog. Drehgestell, welches sich mit der Muffe dreht und um die Drehachse drehbar ist,
• – ein zweites sog. Drehgestell, welches um die Muffe und die Drehachse drehbar ist,
• – eine erste Vielzahl elektrischer Dreh-Gleit-Kontakte, von denen ein Kontaktglied, das für die Anschlüsse an Außenleitungen bestimmt ist, am Festgestell befestigt ist und das andere Kontaktglied, das für die Anschlüsse an in Drehung versetzbare Leitungen des Systems bestimmt ist, an der Muffe befestigt ist,
• – eine zweite Vielzahl elektrischer Dreh-Gleit-Kontakte, von denen ein Kontaktglied am zweiten Drehgestell befestigt und das andere Kontaktglied an der Muffe befestigt ist, wobei jedes Kontaktglied für die Anschlüsse an in Drehung versetzbare Leitungen des Systems bestimmt ist,
• – ein erstes Antriebssystem, welches die Drehung des ersten Drehgestells um die Drehachse zu bewirken vermag,
• – ein zweites Antriebssystem, welches die Drehung des zweiten Drehgestells um die Drehachse zu bewirken vermag.

More specifically, the mechanical and electrical connection rotating device according to the present invention is characterized by comprising:

• A so-called fixed frame with a hub or "central" shaft, which defines an axis of rotation,
• A sleeve which surrounds the hub and is rotatable about it and about the axis of rotation,
• A first so-called bogie, which rotates with the sleeve and is rotatable about the axis of rotation,
• A second so-called bogie, which is rotatable about the sleeve and the axis of rotation,
• A first plurality of rotary-sliding electrical contacts of which one contact member intended for connection to external leads is fixed to the fixed frame and the other contact member intended for connection to rotatable leads of the system is attached to the Sleeve is attached,
• A second plurality of rotary-sliding electrical contacts of which one contact member is secured to the second bogie and the other contact member is secured to the sleeve, each contact member being for connection to rotatable conduits of the system,
• A first drive system capable of causing the first bogie to rotate about the axis of rotation,
• - A second drive system which is capable of causing the rotation of the second bogie about the axis of rotation.

Thus, the two bogies and the sleeve of the connecting device according to the invention are intended to independently of each other by a common, typi during operation to turn the vertical axis of rotation. The rotation of the racks and the sleeve is then "coaxial". The sleeve is rotated by the first bogie in particular via a mechanical means such as a pin in rotation.

The Connecting device according to the invention allows an angular unlimited Rotation between the three racks while ensuring at the same time a permanent power connection between them. The independent rotation the racks increased the comfort and efficiency of the operators.

The Invention is by the detailed DESCRIPTION OF A PREFERRED EMBODIMENT HEREOF is illustrated and explained with reference to the accompanying figures, better understandable.

1 shows in cross section a typical electrolysis hall for aluminum production with a schematically illustrated operating unit.

2 schematically shows a side view of an inventive control module of a plant for the production of aluminum by fused-salt electrolysis.

3 shows in cross section a connecting device according to the invention.

Electrolysis plants for the production of aluminum have an area for the production of liquid aluminum containing one or more electrolytes ( 1 ). As in 1 shown, each electrolysis hall ( 1 ) Electrolysis cells ( 2 ) and at least one "operating unit" or "operating machine" ( 3 ) on. The electrolysis cells ( 2 ) are usually arranged in rows or rows (typically side by side or in series), with each row or row typically containing more than a hundred cells. The cells ( 2 ) contain a number of anodes ( 21 ), which are used for attaching and connecting the anodes to a metallic anode bar (not shown) with a metal bar ( 22 ) are provided.

The operating unit ( 3 ) serves to work on the cells ( 2 ), such. B. Anode change or filling the bunker for feeding the cells with ground charge and AlF. ₃ It can also be used to convey a variety of loads, such as cell elements, liquid metal pans or anodes.

The operating unit ( 3 ) comprises an overhead crane ( 4 ) above and along the electrolysis cells ( 2 ), and an operating module ( 5 ) with one on the overhead crane ( 4 ) movable, movable carriage ( 6 ) and several funding and intervention bodies ( 7 . 8th . 9 . 10 . 11 ), such. As tools (shovels, keys, lancing devices, etc.) and control cabins.

The overhead crane ( 4 ) sits and moves on careers ( 30 . 30 ' ), which are arranged parallel to each other and to the main axis of the hall (and the cell row). The overhead crane ( 4 ) is thus over the length of the electrolysis hall ( 1 ) movable.

• – ein sog. Festgestell (101) zur Befestigung am Transportmodul (6), mit einer Nabe (102), welche eine Drehachse (103) definiert, die insbesondere quer zur Hauptebene des Festgestells liegt;
• – eine Muffe (121), welche die Nabe (102) umgibt und um die Nabe (102) und um die Drehachse (103) drehbar ist,
• – ein erstes sog. Drehgestell (110), welches um die Drehachse (103) drehbar ist und die Muffe (121) in Drehung versetzen kann und dazu bestimmt ist, mindestens ein Förder- und Eingriffsorgan (7, 8, 9, 10, 11) zu tragen;
• – ein zweites sog. Drehgestell (120), welches um die Muffe (121) und die Drehachse (103) drehbar ist und dazu bestimmt ist, mindestens ein Förder- und Eingriffsorgan (7, 8, 9, 10, 11) zu tragen;
• – eine erste Vielzahl elektrischer Dreh-Gleit-Kontakte (113) mit jeweils mindestens einem ersten Kontaktglied (1131), welches am Festgestell (101) befestigt und mit mindestens einer Außenleitung (117) verbunden ist, und mindestens einem zweiten Kontaktglied (1132), welches an der Muffe (121) befestigt und mit mindestens einer Verteilungsleitung (118, 1181, 1182) verbunden ist;
• – eine zweite Vielzahl elektrischer Dreh-Gleit-Kontakte (114) mit jeweils mindestens einem ersten Kontaktglied (1141), welches am zweiten Drehgestell (120) befestigt und mit mindestens einer Verteilungsleitung (119) verbunden ist, und mindestens einem zweiten Kontaktglied (1142), welches an der Muffe (121) befestigt und mit mindestens einer Verteilungsleitung (1181, 1182) verbunden ist;
• – ein erstes Antriebssystem (140, 141, 142), welches die Drehbewegung des ersten Drehgestells (110) um die Achse (103) zu bewirken vermag;
• – ein zweites Antriebssystem (150, 151, 152), welches die Drehbewegung des zweiten Drehgestells (120) um die Achse (103) zu bewirken vermag.

According to the invention, the rotary device for mechanical and electrical connection ( 100 ) between a transport module, typically a carriage ( 6 ), and promotion and intervention bodies ( 7 . 8th . 9 . 10 . 11 ) of a plant for the production of aluminum by fused-salt electrolysis, characterized in that it comprises:

• - a so-called fixed frame ( 101 ) for attachment to the transport module ( 6 ), with a hub ( 102 ), which has a rotation axis ( 103 ) defined, which is in particular transversely to the main plane of the frame;
• - a sleeve ( 121 ), which the hub ( 102 ) and around the hub ( 102 ) and around the axis of rotation ( 103 ) is rotatable
• - a first so-called bogie ( 110 ), which around the axis of rotation ( 103 ) is rotatable and the sleeve ( 121 ) and is intended to provide at least one conveying and engaging member ( 7 . 8th . 9 . 10 . 11 ) to wear;
• - a second so-called bogie ( 120 ), which around the sleeve ( 121 ) and the axis of rotation ( 103 ) is rotatable and intended to at least one conveying and engaging member ( 7 . 8th . 9 . 10 . 11 ) to wear;
• A first plurality of rotary-sliding electrical contacts ( 113 ) each having at least one first contact member ( 1131 ), which is attached to the 101 ) and with at least one outer line ( 117 ), and at least one second contact member ( 1132 ), which on the sleeve ( 121 ) and with at least one distribution line ( 118 . 1181 . 1182 ) connected is;
• A second plurality of rotary-sliding electrical contacts ( 114 ) each having at least one first contact member ( 1141 ), which on the second bogie ( 120 ) and with at least one distribution line ( 119 ), and at least one second contact member ( 1142 ), which on the sleeve ( 121 ) and with at least one distribution line ( 1181 . 1182 ) connected is;
• A first drive system ( 140 . 141 . 142 ), which determines the rotational movement of the first bogie ( 110 ) around the axis ( 103 ) to effect;
• A second drive system ( 150 . 151 . 152 ), which determines the rotational movement of the second bogie ( 120 ) around the axis ( 103 ).

The hub ( 102 ) is with respect to the frame ( 101 ) mounted without rotation. During operation, the fixed frame ( 101 ) typi over the bogies ( 110 . 120 ). The axis of rotation ( 103 ) is usually largely vertical.

The first bogie ( 110 ) turns with the sleeve ( 121 ) and offset them in particular by a mechanical means ( 123 ) like a pin in rotation.

The mentioned plurality of rotary-sliding electrical contacts ( 113 . 114 ) comprise, in particular, contact rings or contact strips which are attached to the sleeve ( 121 ) and contact brushes or contact fingers attached to the racks ( 101 . 120 ) are attached. The number of rotary-slide electrical contacts is typically between a few and several dozen. In particular, they make it possible to transmit control signals and electrical power. The multitude of electrical contacts ( 113 . 114 ) are advantageous by a protective box ( 115 . 116 ) protected. The racks ( 101 . 110 . 120 ) have in particular openings for the passage of the outer and distribution lines.

The external lines ( 117 ) are normally fixed with respect to the frame. In the distribution lines ( 118 . 1181 . 1182 . 119 ) are electrical lines of the connecting device, which by the rotation of the bogies ( 110 . 120 ) can be rotated. The distribution lines comprise a first series of lines ( 118 . 1181 . 1182 ), which in relation to the sleeve ( 121 ) and the first bogie ( 110 ) are normally fixed, and a second row of conduits ( 119 ), which in relation to the second bogie ( 120 ) are usually firmly mounted.

• – ein erstes Ringlager (111) zwischen dem Festgestell (101) und dem ersten Drehgestell (110), welches die Drehbewegung zwischen diesen beiden Gestellen um die Drehachse (103) ermöglicht;
• – ein zweites Ringlager (112) zwischen dem ersten Drehgestell (110) und dem zweiten Drehgestell (120), welches die Drehbewegung zwischen diesen beiden Gestellen um die Drehachse (103) ermöglicht.

In an advantageous embodiment of the invention, the connecting device ( 100 ) Farther:

• - a first ring bearing ( 111 ) between the frame ( 101 ) and the first bogie ( 110 ), which determines the rotational movement between these two frames about the axis of rotation ( 103 );
• - a second ring bearing ( 112 ) between the first bogie ( 110 ) and the second bogie ( 120 ), which determines the rotational movement between these two frames about the axis of rotation ( 103 ).

At the ring bearings ( 111 . 112 ) are in particular rolling bearings, such. B. roller wraps.

The connecting device according to the invention ( 100 ) advantageously has one or more joining means to the racks ( 101 . 110 . 120 ) in a certain axial position. These joining agents may be wholly or partly in the ring bearings ( 111 . 112 ) be integrated.

The drive systems ( 140 . 141 . 142 . 150 . 151 . 152 ) typically have an engine ( 140 . 150 ), a pinion ( 141 . 151 ) and a sprocket ( 142 ) or a gear ( 152 ) on. The motor ( 140 . 150 ) and the sprocket ( 142 . 152 ) can be mounted on the 101 ) or on one of the bogies ( 110 . 120 ) or vice versa. The engine ( 140 . 150 ) by a mechanical means such as an arm ( 153 ) be attached to the rotary or fixed frame.

According to another possible variant of the invention, the drive systems ( 140 . 141 . 142 . 150 . 151 . 152 ) comprise one or more non-positive drive rollers and at least one track or track.

The connection device ( 100 ) advantageously has additional ring bearings ( 160 . 161 . 162 . 163 . 164 ) between the sleeve ( 121 ) and the frame ( 101 ), possibly via the hub ( 102 ) - as in 3 represented - and / or additional ring bearings ( 170 . 171 ) between the sleeve ( 121 ) and second bogie ( 120 ) on. Due to these additional bearings, side shifts of the rotary elements ( 110 . 120 . 121 ) be avoided.

According to an advantageous variant of the invention, the connecting device also comprises pneumatic and / or hydraulic rotary joints ( 130 . 131 . 132 . 133 ) between the frame ( 101 ) and at least one of the bogies ( 110 . 120 ) and preferably the two, so for at least one of the holder or carrier. These connection means allow in particular a supply of the conveying and engagement members with compressed air and advantageously have an axial recess ( 130 ) in the central shaft ( 102 ), sealed rotary joints ( 131 . 132 ) and additional piping ( 133 . 134 ) on.

In a preferred embodiment of the invention, which in 3 is shown, is the first bogie ( 110 ) between the frame ( 101 ) and the second bogie ( 120 ). In this embodiment of the invention, the drive system of the second bogie ( 120 ) preferably one at the hub ( 102 ) fixed gear ( 152 ) and one on the second bogie ( 120 ) attached motor ( 150 ) with a pinion ( 151 ) on.

• – eine erfindungsgemäße Verbindungsvorrichtung (100), welche über das Festgestell (101) mit dem Schlitten (6) verbunden ist;
• – einen ersten Träger (110'), welcher durch das erste Drehgestell (110) gebildet oder mit dem ersten Drehgestell (110) verbunden ist und mindestens ein erstes Förder- und Eingriffsorgan (7, 8, 9, 10, 11) aufweist;
• – einen zweiten Träger (120'), welcher durch das zweite Drehgestell (120) gebildet oder mit dem zweiten Drehgestell (120) verbunden ist und mindestens ein zweites Förder- und Eingriffsorgan (7, 8, 9, 10, 11) aufweist.

The invention also relates to an operating module ( 5 ) for use in a factory for the production of aluminum by fused-salt electrolysis, with a carriage ( 6 ) as well as support and intervention bodies ( 7 . 8th . 9 . 10 . 11 ), characterized in that it additionally comprises:

• A connection device according to the invention ( 100 ), which over the fixed frame ( 101 ) with the carriage ( 6 ) connected is;
• - a first carrier ( 110 ' ), which by the first bogie ( 110 ) or with the ers bogie ( 110 ) and at least one first conveying and intervention member ( 7 . 8th . 9 . 10 . 11 ) having;
• A second carrier ( 120 ' ), which by the second bogie ( 120 ) or with the second bogie ( 120 ) and at least one second conveying and intervention member ( 7 . 8th . 9 . 10 . 11 ) having.

The first carrier ( 110 ' ), for example, typically has a control cabin ( 11 ) and a bunker ( 10 ) containing the product for covering the anodes. The second carrier ( 120 ' ) typically has the various operating tools for the electrolysis cells, such as a lancing device ( 8th ) for breaking the alumina and cryolite crust which forms around and between the anodes, a blade ( 7 ) for removing the solids contained in the electrolysis cell during an anode change and an anode delivery system ( 9 ), with which the consumed anodes are pulled out and new anodes are used.

The connection device ( 100 ) is then arranged in particular so that the bogies ( 110 . 120 ) under the frame ( 101 ), when the carriage ( 6 ) on the overhead crane ( 4 ) is in operating position.

By the operating module according to the invention the operator has the electrolytic cell and the conveyor and Intervention tools or organs in his interventions well in view. It also facilitates the work of the operators by helping him big Spared angular rotations in relation to its starting point. It still allows the same thing Module to use in various electrolyte traps in which the electrolysis cells are not aligned in the same way.

The invention also relates to an operating unit ( 3 ) of a factory for the production of aluminum by fused-salt electrolysis, comprising an overhead crane ( 4 ) and at least one operating module according to the invention ( 5 ) having.

It also relates to the use of an operating module ( 5 ) or an operating unit ( 3 ) according to the invention for interventions on electrolysis cells ( 2 ) for the production of aluminum by fused-salt electrolysis.

list of references

1

electrolysis hall

2

electrolysis cell

3

operating unit

4

overhead crane

5

operation module

6

carriage

7

shovel

8th

lancing device

9

conveyor system for anodes

10

bunker

11

control cabin

21

anode

22

anode rod

30 30 '

raceways of the overhead crane

100

Mechanical-electrical connecting device

101

fixed frame

102

hub

103

axis of rotation the hub

110

first bogie

110 '

first carrier

111

first section bearings

112

second section bearings

113

First Variety of electrical rotary-sliding contacts

114

Second Variety of electrical rotary-sliding contacts

1131 1141

First so-called outer contact members every electrical contact

1132 1142

Second so-called inner contact members of each electrical contact

115 116

enclosures

117

External power lines

118 1181, 1182

distribution lines

119

distribution lines

120

second bogie

120 '

second carrier

121

sleeve

122

Rotating clutch housing

123

rotary drive

130

axial Well in the hub

131 132

density rotary couplings

133 134

piping

140 150

drive motor

141 151

pinion

142

sprocket

152

gear

153

poor

160 ..., 164

additional section bearings

170 171

additional section bearings

Claims (14)

Turning device for mechanical and electrical connection ( 100 ) between a transport module, typically a carriage ( 6 ), and Support and intervention bodies ( 7 . 8th . 9 . 10 . 11 ) of a plant for the production of aluminum by fused-salt electrolysis, characterized in that it comprises: - a so-called fixed frame ( 101 ) for attachment to the transport module ( 6 ), with a hub ( 102 ), which has a rotation axis ( 103 ) Are defined; - a sleeve ( 121 ), which the hub ( 102 ) and around the hub ( 102 ) and around the axis of rotation ( 103 ) is rotatable, - a first, so-called bogie ( 110 ), which around the axis of rotation ( 103 ) is rotatable and the sleeve ( 121 ) and is intended to at least one conveying and engaging member ( 7 . 8th . 9 . 10 . 11 ) to wear; - a second, so-called bogie ( 120 ), which around the sleeve ( 121 ) and the axis of rotation ( 103 ) is rotatable and intended to at least one conveying and engaging member ( 7 . 8th . 9 . 10 . 11 ) to wear; A first plurality of rotary-sliding electrical contacts ( 113 ) each having at least one first member ( 1131 ), which is attached to the 101 ) and with at least one outer conductor ( 117 ) and at least one second member ( 1132 ), which on the sleeve ( 121 ) and with at least one distribution line ( 118 . 1181 . 1182 ) connected is; A second plurality of rotary-sliding electrical contacts ( 114 ) each having at least one first member ( 1141 ), which on the second bogie ( 120 ) and with at least one distribution line ( 119 ) and at least one second member ( 1142 ), which on the sleeve ( 121 ) and with at least one distribution line ( 1181 . 1182 ) connected is; A first drive system ( 140 . 141 . 142 ), which determines the rotational movement of the first bogie ( 110 ) around the axis ( 103 ) to effect; A second drive system ( 150 . 151 . 152 ), which determines the rotational movement of the second bogie ( 120 ) around the axis ( 103 ). Connecting device ( 100 ) according to claim 1, characterized in that it further comprises: - a first ring bearing ( 111 ) between the frame ( 101 ) and the first bogie ( 110 ), which determines the rotational movement between these two frames about the axis of rotation ( 103 ); - a second ring bearing ( 112 ) between the first bogie ( 110 ) and the second bogie ( 120 ), which determines the rotational movement between these two frames about the axis of rotation ( 103 ). Connecting device ( 100 ) according to any one of claims 1 or 2, characterized in that the drive systems ( 140 . 141 . 142 . 150 . 151 . 152 ) an engine ( 140 . 150 ), a pinion ( 141 . 151 ) and a sprocket ( 142 ) or a gear ( 152 ) exhibit. Connecting device ( 100 ) according to any one of claims 1 or 2, characterized in that the drive systems ( 140 . 141 . 142 . 150 . 151 . 152 ) have one or more non-positive drive rollers and at least one track. Connecting device ( 100 ) according to any one of claims 1 to 4, characterized in that it comprises additional ring bearings ( 160 . 161 . 162 . 163 . 164 ) between the sleeve ( 121 ) and the frame ( 101 ), possibly via the hub ( 102 ), and / or additional ring bearings ( 170 . 171 ) between the sleeve ( 121 ) and the second bogie ( 120 ) having. Connecting device ( 100 ) according to any one of claims 1 to 5, characterized in that it also comprises means of rotation for pneumatic and / or hydraulic connection ( 130 . 131 . 132 . 133 . 134 ) between the frame ( 101 ) and at least one of the bogies ( 110 . 120 ) having. Connecting device ( 100 ) according to claim 6, characterized in that the rotation means for pneumatic connection ( 130 . 131 . 132 . 133 ) an axial recess ( 130 ) in the central shaft ( 102 ), tight rotary joints ( 131 . 132 ) and additional piping ( 133 . 134 ) exhibit. Connecting device ( 100 ) according to any one of claims 1 to 7, characterized in that the first bogie ( 110 ) between the frame ( 101 ) and the second bogie ( 120 ) lies. Connecting device ( 100 ) according to claim 8, characterized in that the drive system of the second bogie ( 120 ) on the hub ( 102 ) fixed gear ( 152 ) and one on the second bogie ( 120 ) attached motor ( 150 ) with a pinion ( 151 ) having. Operating module ( 5 ) for use in a factory for the production of aluminum by fused-salt electrolysis, with a carriage ( 6 ) as well as support and intervention bodies ( 7 . 8th . 9 . 10 . 11 ), characterized in that it additionally comprises: - a connecting device ( 100 ) according to any one of claims 1 to 9, which over the frame ( 101 ) with the carriage ( 6 ) connected is; - a first holder ( 110 ' ), which by the first bogie ( 110 ) or with this first bogie ( 110 ) and at least one first conveying and intervention member ( 7 . 8th . 9 . 10 . 11 ) having; A second holder ( 120 ' ), which by the second bogie ( 120 ) or with this second bogie ( 120 ) and at least one second conveying and intervention member ( 7 . 8th . 9 . 10 . 11 ) having. Operating module ( 5 ) according to claim 10, characterized in that the connecting device ( 100 ) is arranged so that the bogies ( 110 . 120 ) under the frame ( 101 ), when the carriage ( 6 ) on the gangway ( 4 ) is in operating position. Control unit ( 3 ) of a plant for the production of aluminum by fused-salt electrolysis, with a gangway ( 4 ) and at least one operating module ( 5 ) according to any one of claims 10 or 11. Use of a control module ( 5 ) according to any one of claims 10 or 11 for operations on electrolysis cells ( 2 ) for the production of aluminum by fused-salt electrolysis. Use of a control unit ( 3 ) according to claim 12 for interventions on electrolysis cells ( 2 ) for the production of aluminum by fused-salt electrolysis.