CN117242214A - Tripod and anode assembly - Google Patents
Tripod and anode assembly Download PDFInfo
- Publication number
- CN117242214A CN117242214A CN202280028765.9A CN202280028765A CN117242214A CN 117242214 A CN117242214 A CN 117242214A CN 202280028765 A CN202280028765 A CN 202280028765A CN 117242214 A CN117242214 A CN 117242214A
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- logs
- anode
- tripod
- rod
- spider
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- 241000239290 Araneae Species 0.000 claims abstract description 43
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000017525 heat dissipation Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009626 Hall-Héroult process Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 239000005539 carbonized material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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
-
- 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
- C25C3/16—Electric current supply devices, e.g. bus bars
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
A spider (1, 3) for producing aluminium by electrolysis, the spider having a longitudinal axis (A L ) Transverse axis (A) T ) And a vertical axis (A) V ) The spider (1, 3) is configured to be mechanically and electrically connected to two anodes (22, 42) and to one anode support (21, 41), the spider (1, 3) having-two parallel rows (I, II), each row having a plurality of logs (13, 33) configured to be connected to the anodes (22, 42), at least one rod (14, 34) mechanically and electrically engaged with one of the two rows (I, II), and a body (11, 31) connecting the two rows (I, II) and configured to be connected to the anode support (21, 41).
Description
Technical Field
The invention relates to a tripod and an anode assembly having the same. According to the hall-heroult process, aluminium is the conventional electrolyte in an electrolytic cell.
Background
Typically, an electrolytic cell has a steel chamber within which a protective layer of refractory material is disposed, a cathode of a carbonized material disposed at the bottom of the steel chamber, an electrolytic bath in which aluminum is dissolved, and a plurality of anode assemblies. The anode assembly has at least one anode immersed in an electrolytic bath connected to an anode rod. The anode rod may include a spider structure having a plurality of connectors or logs sealed in the anode. Typically, the anode assembly is suspended from an anode support by anode rods.
WO2019123131 describes a tripod structure having a plurality of arms and logs sealed in an anode. The spider structure assists in the thermal balance of the cell at a certain amperage. When the current increases, additional energy must be discharged. Therefore, in order to maintain the heat balance of the electrolytic cell, it is necessary to eliminate the heat energy increased due to the increase in the electrolytic current intensity. However, the tripod structure does not improve the heat dissipation capacity of the electrolyzer.
In addition, the anode is in particular a pre-baked anode formed from a pre-baked carbonized anode assembly, i.e. an anode that is pre-baked before being inserted into the electrolysis cell. In order to avoid spontaneous oxidation of the carbon of the anode by contact with oxygen, and to maintain the thermal balance of the electrolyzer, in particular to stabilize the temperature of the bath around 950 ℃, it is known to cover the anode with a covering, typically of aluminium and/or to recover the crushed bath. The cover is generally in the shape of a fluid that flows during the electrolysis operation to permanently cover the anode. The anode is formed during the electrolytic reaction, and therefore, the anode assembly is regularly replaced with a new anode assembly.
The cell also has an electrical conductor connecting the cathode to the anode support of the subsequent cell for conducting the electrolysis current from the cell to the cell. Therefore, the electrolytic cells are connected in series and can be supplied with electrolytic current with the current intensity of hundreds of thousands of amperes.
In order to increase the capacity of the electrolyzer, one solution consists in increasing the intensity of the electrolysis current and thus the thermal energy generated in the electrolyzer. It is also necessary to dissipate heat energy increased by the increase in the electrolytic current intensity and maintain the heat balance of the electrolytic cell.
When changing the anode assembly, a cover is introduced over the new anode, continuously covering the anode as sealingly as possible, avoiding direct contact of the anode surface with air. Any contact of oxygen in the air with the carbon constituting the anode will cause this carbon to oxidize due to the high temperature in the electrolytic cell in the vicinity of the anode, thereby degrading the anode. Generally, a new anode assembly is taller than an adjacent anode assembly whose anode has been partially consumed. Due to this difference in height between the new anode and the partially consumed adjacent anode, the cover that flows onto the new anode of the new anode assembly also tends to flow over the partially consumed adjacent anode of the adjacent anode assembly, between and/or onto logs of the tripod structure, and possibly even onto beams, logs or rods of the adjacent anode and the tripod structure. The adjacent anode is thus covered by a flow-through cover addition from the cover for the new anode, the thickness of which must be such that, in particular, the vertical sides of the new anode can be protected against oxidation. The cover-increasing portion collapses to flow between and/or over the logs, filling the void under the spider structure, at least partially burying the logs, for partial heat dissipation. In addition, if the new anode is poorly covered, for example, without adding a cover on the adjacent anode, the anode, which is mainly composed of carbon, is oxidized, and the round bar, which is mainly composed of iron, is thus susceptible to the electrolytic bath. Contact between the bath and the logs may cause the logs to decompose, increasing the iron content of the bath and the metal.
Therefore, adjacent anodes are excessively insulated in order to protect the vertical sides of the new anode. Therefore, in order to improve the control of the cell thermal balance, it is necessary to control the fluctuations of the cover on the anode assembly of the cell.
Disclosure of Invention
The present invention aims to remedy these drawbacks by proposing a spider and an anode assembly which reduce the influence of the flow of the material adjacent to the anode assembly, in particular the covering added between and/or over the centre of the material and the submerged part of the material, maintain the heat balance of the cell, in particular increase the dissipation of the heat energy generated in the cell, i.e. increase the heat loss or dissipation in the cell.
One embodiment relates to a spider for producing aluminum by electrolysis, the spider having a longitudinal axis, a transverse axis, and a vertical axis, the spider being configured to mechanically and electrically connect to two anodes and an anode support, the spider having:
two parallel rows, each row having a plurality of logs configured for connection to the anode,
-at least one rod mechanically and electrically engaged with one of the two rows, and
-a body connecting the two rows and configured for connection to an anode support.
In other words, it should be understood that only one row of logs, or two rows of logs, is provided with one or more bars. It will be appreciated that each rod cooperates with only one of the two rows of logs. In other words, each rod of the at least one rod is mated with only one row of logs (e.g., with one or more logs of the same row of logs).
The at least one rod can block the added cover, thereby restricting the added cover from flowing between and/or over the logs. In addition, one rod cooperates with only one row in order to remove the heat energy generated in the electrolyzer, in particular at the logs. Thus, an increase in heat loss (or heat dissipation) in the electrolytic cell is achieved. Thus, the intensity of the electrolytic current flowing through the electrolytic cell equipped with the spider can be increased, the productivity of the electrolytic cell can be increased, while ensuring heat balance.
For example, the at least one rod comprises two rods or two of the at least one rod (or two sets of rods, each set of rods having at least one rod), each/at least one rod of the two rods being mechanically and electrically engaged with (only) one of the two rows of logs.
According to one embodiment, the tripod comprises two at least one rod (or two sets of rods, each set having at least one rod), each at least one rod being mechanically and electrically engaged with one of the two rows, respectively. In other words, at least one rod is connected to each row. In other words, each row is provided with at least one bar.
It should be understood that a tripod has two different at least one bar, namely a first at least one bar (or a first set of bars) and a second at least one bar (or a second set of bars) different from the first at least one bar. Each of the two at least one rod is connected only to one different row than the row to which the other at least one rod is connected. For example, a first at least one rod is connected to a first row of logs and a second at least one rod is connected to a second row of logs, the first row of logs being different from the second row of logs (the first at least one rod being different from the second at least one rod).
According to one embodiment, the (or each of the) at least one bar extending along the longitudinal axis of the tripod comprises an upper wall, a lower wall, side walls and a transverse wall, and comprises a slot extending from the lower wall to the upper wall of the bar. In this embodiment, thermal and mechanical stresses accumulate as the electrolysis decreases. The risk of breakage of the tripod is therefore minimised to a considerable extent.
According to one embodiment, the groove extends along the vertical axis on the whole or part of the side walls of the bar, for example on 100% of the side walls, for example on up to 98% of the side walls of the bar, for example on 75% to 98% of the side walls of the bar. This embodiment allows thermal and mechanical stresses to be greatly reduced, avoiding the risk of breaking the tripod, more precisely the rod and/or the anode connected to the tripod.
According to one embodiment, the logs of the plurality of logs each have an upper wall, a lower wall and a side wall; and, the plurality of logs having end logs, the at least one rod comprising end rods, the end logs and the end rods being configured for arrangement at a first end and a second end of one anode, each end log being arranged adjacent to one end rod such that a side wall of an end log is in contact with a transverse wall of an end rod. For example, a tripod includes four end bars and four end logs. In this embodiment, the arrangement of the end logs and the end bars may increase heat loss (or dissipation). In practice, the bar abuts an end log, increasing the heat dissipation area.
According to one embodiment, the (or each of the) at least one bar comprises a central bar, each central bar being arranged between two logs, so that the transverse wall of the central bar is in contact with the side walls of the two logs. For example, the spider includes four central bars. In this embodiment, the arrangement of the logs and the central bars may increase the heat exchange area, increasing the heat loss (or dissipation).
According to one embodiment, the body has a plurality of arms having a first portion extending along a transverse axis of the spider and a second portion extending along a vertical axis of the spider, the second portion of the arms being connected to the plurality of logs. For example, the second portion of the arm is connected to the upper wall of the log.
According to one embodiment, each log is intended to be inserted into a hole provided in the anode and intended to be in contact with the second portion of the arm. For example, the lower wall of each log is intended to be inserted in one hole of the anode, and the upper wall of each log is intended to be in contact with the second portion of the arm.
According to one embodiment, each row has a bar on which the plurality of logs is fixed, the body having a cross beam in contact with and arranged perpendicular to the at least one bar.
According to one embodiment, each log is intended to be inserted in a hole provided in the anode and to be in contact with said rod. For example, the logs of the plurality of logs each have an upper wall, a lower wall and a side wall, the lower wall of each log being intended to be inserted in a hole of an anode, the upper wall of the log being intended to be in contact with the lower portion of said at least one rod. In this embodiment, the rods arranged above the logs provide a large heat dissipation area for the generated thermal energy.
According to one embodiment, the plurality of logs comprises end logs for being arranged at a first end and a second end (along the longitudinal axis) of one anode. For example, the spider includes four end logs.
According to one embodiment, a side wall of the log, in particular the lower part of the side wall, has at least one projection for insertion in a groove provided on a side wall of the hole of the anode. For example, the protrusions and grooves have the shape of a triangular signal. This embodiment ensures that the logs are sealed in the anode.
According to one embodiment, an opening between an upper wall of the anode and a lower wall of the at least one rod extends along the longitudinal axis of the tripod. For example, the opening may be several millimeters, such as 5-6mm. In this embodiment, unconsumed anode is easily discharged through the tripod through the opening. In addition, the (or each of the two) at least one rod arrests the increase in the covering, as the upper wall of the anode abuts the lower wall of the (or each of the two) at least one rod. This may limit the flow of added cover between and/or over the logs.
According to one embodiment, the plurality of logs of each row extend along a longitudinal axis of the tripod.
According to one embodiment, the two rows of logs and the at least one rod extend parallel to each other along the longitudinal axis (i.e. are coaxially arranged).
According to one embodiment, the plurality of logs comprises six logs, each row having three logs.
According to one embodiment, the (or each of the) at least one rod is welded, for example, to all or part of the logs of a row.
According to one embodiment, the (or each of the) at least one rod is interposed between, or arranged on, the logs. In this embodiment, the rod is configured to conform to the shape of a round bar.
According to one embodiment, the at least one rod cooperates with the row so as to limit the flow of the covering between and/or on the logs.
One embodiment relates to an anode assembly for producing aluminum by electrolysis having two anodes, one anode support, and a spider according to any of the embodiments of the invention.
Drawings
Other characteristics and advantages of the invention will become apparent from the following detailed description of an embodiment given as a non-limiting example, with reference to the accompanying drawings, in which:
FIG. 1 is an overall view of one embodiment of a tripod;
FIG. 2 is a cross-sectional view of one embodiment of a tripod;
FIG. 3 is an overall view of one embodiment of a spider coupled to an anode support;
FIG. 4 is a top view of one embodiment of a spider coupled to an anode support;
FIG. 5 is a side view of one embodiment of a spider coupled to an anode support;
FIG. 6 is another side view of one embodiment of a spider coupled to an anode support;
FIG. 7 is an overall view of one embodiment of an anode assembly;
FIG. 8 is a top view of one embodiment of an anode assembly;
FIG. 9 is a cross-sectional view of one embodiment of an anode assembly;
FIG. 10 is an overall view of one embodiment of a tripod;
FIG. 11 is an overall view of one embodiment of a spider coupled to an anode support;
FIG. 12 is a top view of one embodiment of a spider coupled to an anode support;
FIG. 13 is a side view of one embodiment of a spider coupled to an anode support;
FIG. 14 is another side view of one embodiment of a spider coupled to an anode support;
FIG. 15 is an overall view of one embodiment of an anode assembly;
FIG. 16 is an enlarged view of one embodiment of an anode assembly;
FIG. 17 is a top view of one embodiment of an anode assembly; and
fig. 18 is a cross-sectional view of one embodiment of an anode assembly.
Detailed Description
Fig. 1 and 2 show a tripod 1. The spider 1 is intended to be equipped with an electrolytic cell (not shown) for the production of aluminium by electrolysis according to the hall-hero method.
The tripod 1 has a longitudinal axis a L Transverse axis A T And a vertical axis A V Comprising two parallel rows I, II, each row having a plurality of logs 13, each log 13 having an upper wall 13a, a lower wall 13b and side walls 13c; the bars 14 each have an upper wall 14a, a lower wall 14b, side walls 14c and a transverse wall 14d. For example, the plurality of logs 13 includes six logs, each row I, II having three logs. For example, the tripod 1 comprises eight bars 14. In this embodiment, four bars 14 are mechanically and electrically engaged with one of the two rows I, II. In this embodiment, the tripod 1 comprises two at least one bar 14 (or two sets of bars 14), a first at least one bar 14 being mechanically and electrically engaged with a first row I, a second at least one bar 14 different from the first at least one bar 14 being mechanically and electrically engaged with a second row II different from the first row I.
The tripod 1 further comprises a body 11 connecting the two rows I, II.
The plurality of logs 13 of each row I, II can have end logs 13E and the bars 14 can have end bars 14E.
Each end log 13E may be arranged adjacent to one end bar 14E such that the side wall 13c of said end log is in contact with the transverse wall 14d of said end bar 14E. For example, the tripod 1 comprises four end bars 14E and four end logs 13E.
The bars 14 have central bars 14c, each central bar 14c being arranged between two logs 13,13E, so that the transverse wall 14d of the central bar 14c is in contact with the side walls of the two logs 13, 13E. For example, the tripod 1 comprises four central bars 14c.
For example, the log row I, II and the rod 14 are along the longitudinal axis a L Extending parallel to each other.
The rod 14 may be welded to the log 13.
Alternatively, bars 14 configured in advance for conforming to the shape of the logs 13 are interposed between the logs 13 or arranged on the logs 13. In other words, the bars 14 are arranged between and/or on the logs 13.
Fig. 3 to 6 show a tripod 1 which is connected to an anode support 21. The anode support 21 is typically welded to the spider 1.
For example, the at least one bar 14, in particular a central bar 14c, has a slot 15 extending from the lower wall 14b to the upper wall 14a of the bar 14. The grooves 15 reduce the thermal mechanical stresses accumulated during electrolysis and thus reduce the risk of breakage of the spider and/or the anode connected to the spider.
In this embodiment, the slot 15 may be on all or part of the side wall 14c of the lever 14 along the vertical axis A V Extending. For example, the slot 15 is along the vertical axis A on 100% of the side walls 14c of the bar 14 or at most 98% of the side walls 14c V Extending. For example, the slot 15 is along the vertical axis a on between 75% and 98% of the side walls 14c of the bar 14 V Extending. The longer the groove, the less thermomechanical stress.
Fig. 7 to 9 show an anode assembly 2 for the production of aluminium by electrolysis according to the hall-heroot method. The assembly 2 has: two anodes 22, each anode 22 having an upper wall 22a and a lower wall 22b; an anode support 21; and a tripod 1.
The spider 1 is mechanically and electrically connected to two anodes 22.
A plurality of logs 13 are configured to be connected to the two anodes 22 and along the longitudinal axis of the tripod 1A L Extending. In addition, the rod 14 is along the longitudinal axis a of the tripod 1 L Extending.
The end logs 13E and said end bars 14E are for example intended to follow the longitudinal axis a L Disposed at the first end E1 and the second end E2 of one anode 22.
For example, the body 11 of the tripod has a plurality of arms having a transverse axis a along the tripod 1 T A first portion 16a extending and a vertical axis A along the tripod 1 V The second portion 16b of the extension, the second portion 16b of the arm being connected to the upper wall 13a of the log.
Each log 13 is intended to be inserted in a hole 23 provided in the anode 22 and to be in contact with the second portion 16b of the arm. For example, the lower wall 13b of each log 13 may be adapted to be inserted into one of the holes 23 provided in the anode 22, and the upper wall 13a of each log 13 may be adapted to be in contact with the second portion 16b of the arm.
For example, the side wall 13c of the log 13, in particular the lower portion of the side wall 13c, has at least one projection 13d for insertion in a slot 23a arranged on one side wall of the hole 23 of the anode 22. Thus, the logs 13 are tightly sealed in the anode 22.
For example, an opening O between the upper wall 22a of the anode 22 and the lower wall 14b of the rod 14 is along the longitudinal axis A of the tripod 1 L Extending. The opening facilitates the draining of unconsumed anodes. For example, the opening O may have a number of millimeters, such as 5-6mm. Therefore, unconsumed anode is easily discharged from the tripod 1 through the opening O. In addition, the upper wall 22a of the anode 22 abuts the lower wall 14b of the rod 14, said rod 14 blocking the increased portion of the covering, thereby restricting the flow of the increased portion of the covering between and/or over the logs 13.
Fig. 10 shows a tripod 3 of another embodiment.
The spider 3 has a longitudinal axis A L Transverse axis A T And a vertical axis A V The spider comprises two parallel rows I, II, each row having a plurality of logs 33, each log 33 having an upper wall 33a, a lower wall 33b and side walls 33c; at least one rod 34 has an upper wall 34a, a lower wall 34b, and sidesA wall 34c and a transverse wall 34d. Each of the two at least one rod is mechanically and electrically engaged with only one of the rows I, II. For example, each row I, II has one rod 34 to which the plurality of logs 33 are secured. For example, the plurality of logs 33 has six logs, i.e. three logs per row, and the tripod 3 has two bars 34. In this embodiment, the tripod 3 has two at least one rod 34, and in particular two rods 34, a first at least one rod 34 (or a first rod 34) being mechanically and electrically engaged with a first row I and a second at least one rod 34 (or a second rod 34) different from the first at least one rod 34 being mechanically and electrically engaged with a second row II different from the first row I.
The tripod 3 further comprises a body 31 connecting two rows I, II. The body 31 may have a cross beam 32 in contact with the bar 34 and arranged perpendicular to said bar 34. For example, the cross beam 32 is disposed near the upper wall 34a of the lever 34.
For example, rows I and II of logs and rod 34 along longitudinal axis A L Extending parallel to each other.
The bars 34 may be welded to the respective connected rows of logs 33. Fig. 11 to 14 show the spider 3 connected to an anode support 41. In this embodiment, the upper wall 33a of the log 33 contacts, for example, the lower portion 34b of the rod 34.
For example, the at least one lever 34 has a slot (not shown) extending from the lower wall 34b to the upper wall 34a of the lever 34.
Fig. 15 to 18 show an anode assembly 4 for the production of aluminium by electrolysis according to the hall-heroot method. The assembly 4 comprises: two anodes 42, each anode 42 having an upper wall 42a and a lower wall 42b; an anode support 41; and a spider 3.
The spider 3 is mechanically and electrically connected to two anodes 42.
A plurality of logs 33 are configured to be connected to said anode 42 and along a longitudinal axis a of the tripod 3 L Extending. In addition, the rod 14 is along the longitudinal axis a of the tripod 3 L Extending.
End logs 33E are for example along longitudinal axis A L Arranged at one anode 42A first end E1 and a second end E2. For example, the plurality of logs 33 includes four end logs 33E.
For example, the lever 34 is along a vertical axis A V And a transverse axis A T Having a thickness of a few millimeters and along the longitudinal axis a of the tripod 3 L And the extension provides a larger area for heat energy to be generated for heat dissipation. The lower wall 33b of each log 33 is intended to be inserted in one of the holes 43 provided in the anode 42, and the upper wall of each log is intended to be in contact with the lower portion 34b of the rod. For example, the side wall 33c of the lower portion of the log 33 has at least one protrusion 33d for insertion in one groove 43a arranged on one side wall of the hole 43 of the anode 42.
For example, an opening O between the upper wall 42a of the anode 42 and the lower wall 34b of the rod 34 is along the longitudinal axis A of the tripod 3 L Extending. For example, the opening O may have a number of millimeters, such as 5-6mm. Therefore, unconsumed anode is easily discharged from the tripod 1 through the opening O. The upper wall 42a of the anode 42 abuts the lower wall 14b of the rod 34, which rod 34 blocks the increased portion of the covering, thereby restricting the flow of the increased portion of the covering between and/or over the logs 33.
The tripod 1,3 according to the invention, and in particular the rods 14,34 of said tripod, and the anode assembly, are configured to minimize the flow of the cover between and/or over the logs. In other words, the at least one rod 14,34 cooperates with the row I, II in order to limit the flow of the covering between and/or on the logs 13, 33. In addition, the rod piece is matched with the round material so as to dissipate heat energy accumulated during electrolysis. It follows that the anode assembly is advantageous in preventing wear and tear due to thermal and mechanical stresses.
Claims (16)
1. A spider (1, 3) for producing aluminium by electrolysis, the spider having a longitudinal axis (A L ) Transverse axis (A) T ) And a vertical axis (A) V ) The spider (1, 3) being configured to be mechanically and electrically connected to two anodes (22, 42) and to one anode support (21, 41), the spider (1, 3) having:
two parallel rows (I, II), each having a plurality of logs (13, 33) configured for connection to the anodes (22, 42),
-at least one rod (14, 34) mechanically and electrically engaged with one of the two rows (I, II), and
-a body (11, 31) connecting said two rows (I, II) and configured for connection to an anode support (21, 41).
2. A tripod (1, 3) according to claim 1, wherein the longitudinal axis (a L ) The at least one rod (14, 34) extending has an upper wall (14 a,34 a), a lower wall (14 b,34 b), side walls (14 c,34 c) and a transverse wall (14 d,34 d), and has a slot (15) extending from the lower wall (14 b,34 b) of the at least one rod (14, 34) to the upper wall (14 a,34 a).
3. A tripod (1, 3) according to claim 2, wherein the slot (15) extends over 100% of the side walls (14 c,34 c) of said at least one bar (14, 34).
4. A tripod (1) according to any one of claims 1 to 3, wherein each log (13) of said plurality of logs (13) has an upper wall (13 a), a lower wall (13 b) and a side wall (13 c); and, the plurality of logs (13) have end logs (13E), the at least one rod (14) comprising end rods (14E), the end logs (13E) and the end rods (14E) being configured for being arranged at a first end (E1) and a second end (E2) of one anode (22), each end log (13E) being arranged adjacent to one end rod (14E) so that a side wall (13 c) of the end log is in contact with a transverse wall (14 d) of the end rod (14E).
5. The tripod (1) according to claim 4, wherein said at least one rod (14) comprises central rods (14 c), each central rod (14 c) being arranged between two logs (13,13E) so that the transverse wall (14 c) of the central rod (14) is in contact with the lateral walls (13 c) of the two logs (13,13E).
6. A tripod (1) according to any one of claims 1 to 5, wherein the body (11) has a plurality of arms having a transverse axis (a) along the tripod (1) T ) A first portion (16 a) extending and a vertical axis (A) along the tripod (1) V ) -an extended second portion (16 b), the second portion (16 b) of the arm being connected to a plurality of logs (13).
7. A tripod (1) according to claim 6, wherein each log (13) is intended to be inserted into one hole (23) provided in the anode (22) and to be in contact with the second portion (16 b) of the arm.
8. A tripod (3) according to any one of claims 1 to 3, wherein each row (I, II) has a bar (34) on which the plurality of logs (33) are fixed, the body (31) having a cross beam (32) in contact with the at least one bar (34) and arranged perpendicular to the at least one bar (34).
9. A tripod (3) according to claim 8, wherein each log (33) is intended to be inserted in a hole (43) provided in the anode (42) and to be in contact with the rod (34).
10. A tripod (1) according to claim 7 or 9, wherein one side wall (13 c,33 c) of the log (13, 33) has at least one projection (13 d,33 d) for insertion in a groove (23 a,43 a) provided on one side wall of the hole (23, 43) of the anode (22, 42).
11. The spider (1, 3) according to any one of claims 1 to 10 in combination with claim 2, wherein an opening (O) between an upper wall (22 a,42 a) of the anode (22, 42) and a lower wall (14 b,34 b) of the at least one rod (14, 34) is along the longitudinal axis (a) of the spider (1, 3) L ) Extending.
12. A tripod (1, 3) according to any one of the preceding claims, wherein said at least one rod (14, 34) is welded to the logs (13, 33).
13. The tripod (1) according to any one of claims 1 to 12, wherein said at least one rod (14) is interposed between logs (13) or is arranged on logs (13).
14. A tripod (1, 3) according to any one of claims 1 to 13, wherein said at least one bar (14, 34) cooperates with said rows (I, II) so as to limit the flow of the covering between and/or on the logs (13, 33).
15. A tripod (1, 3) according to any one of claims 1 to 14, having two said at least one bar (14, 34), each of which is mechanically and electrically engaged with one of said two rows (I, II), respectively.
16. Anode assembly (2, 4) for producing aluminium by electrolysis, characterized in that the anode assembly (2, 4) has two anodes (22, 42), one anode support (2, 4), and a spider (1, 3) according to any one of claims 1 to 15.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR21/03980 | 2021-04-16 | ||
| FR2103980A FR3121938B1 (en) | 2021-04-16 | 2021-04-16 | Multipod and anode assembly |
| PCT/IB2022/053357 WO2022219487A1 (en) | 2021-04-16 | 2022-04-11 | Multi-legged structure and anode assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117242214A true CN117242214A (en) | 2023-12-15 |
Family
ID=77317057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280028765.9A Pending CN117242214A (en) | 2021-04-16 | 2022-04-11 | Tripod and anode assembly |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4323564A1 (en) |
| CN (1) | CN117242214A (en) |
| CA (1) | CA3215914A1 (en) |
| FR (1) | FR3121938B1 (en) |
| WO (1) | WO2022219487A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280435A (en) * | 2008-05-27 | 2008-10-08 | 东北大学设计研究院（有限公司） | 400kA level energy-saving emission-reduced prebaking aluminum cell |
| NO337977B1 (en) * | 2008-10-31 | 2016-07-18 | Norsk Hydro As | Method and apparatus for extracting heat from aluminum electrolysis cells |
| CN201530872U (en) * | 2009-04-08 | 2010-07-21 | 高德金 | Novel aluminum cell anode conduction device |
| NZ733895A (en) * | 2015-02-13 | 2018-09-28 | Norsk Hydro As | An anode for use in an electrolysis process for production of aluminium in cells of hall-heroult type, and a method for making same |
| CN104962950A (en) * | 2015-06-18 | 2015-10-07 | 包头市中硕焊接科技有限公司 | Method for reducing occurrence of anode effect during aluminum electrolysis and corresponding anode structure |
| GB2569382A (en) | 2017-12-18 | 2019-06-19 | Dubai Aluminium Pjsc | Anode yoke, anode hanger and anode assembly for a Hall-Heroult cell |
| NO345111B1 (en) * | 2018-06-22 | 2020-10-05 | Storvik As | A method of producing an anode hanger, and an anode hanger obtainable by the method |
| FR3090700B1 (en) * | 2018-12-20 | 2021-01-01 | Rio Tinto Alcan Int Ltd | Anode assembly and electrolysis cell including this anode assembly |
-
2021
- 2021-04-16 FR FR2103980A patent/FR3121938B1/en active Active
-
2022
- 2022-04-11 CN CN202280028765.9A patent/CN117242214A/en active Pending
- 2022-04-11 WO PCT/IB2022/053357 patent/WO2022219487A1/en active Application Filing
- 2022-04-11 EP EP22787729.7A patent/EP4323564A1/en active Pending
- 2022-04-11 CA CA3215914A patent/CA3215914A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3121938A1 (en) | 2022-10-21 |
| EP4323564A1 (en) | 2024-02-21 |
| WO2022219487A1 (en) | 2022-10-20 |
| CA3215914A1 (en) | 2022-10-20 |
| FR3121938B1 (en) | 2023-03-10 |
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