CN217499446U - Connecting structure of anode steel claw and anode carbon block for aluminum electrolysis - Google Patents
Connecting structure of anode steel claw and anode carbon block for aluminum electrolysis Download PDFInfo
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- CN217499446U CN217499446U CN202220458548.0U CN202220458548U CN217499446U CN 217499446 U CN217499446 U CN 217499446U CN 202220458548 U CN202220458548 U CN 202220458548U CN 217499446 U CN217499446 U CN 217499446U
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Abstract
The utility model provides a connection structure that is used for anodal steel claw and positive pole charcoal piece of aluminium electroloysis, includes positive pole steel claw and positive pole charcoal piece, is equipped with the carbon bowl on the positive pole charcoal piece, installs the metal component on the bottom surface of carbon bowl, and in the positive pole steel claw inserted the carbon bowl, the bottom surface and the metal component contact of positive pole steel claw, it had phosphorus pig iron to fill between the side of positive pole steel claw and the carbon bowl inner wall. The connecting structure of the utility model leads the metal component and the carbon bowl to be connected into a whole through the screw thread, the phosphorus pig iron pours the steel claw and the metal component together, and finally leads the anode steel claw-phosphorus pig iron-metal component-anode carbon block to be closely connected together, thus greatly reducing the iron-carbon pressure drop; the connecting structure can greatly reduce the anode voltage drop without increasing the whole production cost, has simple process and is suitable for industrial popularization.
Description
Technical Field
The utility model belongs to the technical field of aluminium electroloysis, in particular to a connection structure of an anode steel claw and an anode carbon block for aluminium electroloysis.
Background
Energy conservation and consumption reduction are problems which need to be solved urgently in aluminum electrolysis; in modern large-scale prebaked anode aluminum electrolytic cell, the anode voltage accounts for about 7.5% of the cell voltage, and the reduction of the anode voltage drop is one of the important ways of saving energy of the aluminum electrolytic cell.
In the process of assembling the anode of the aluminum electrolytic cell, the anode steel claw and the carbon block are connected by pouring phosphorus pig iron, but in the process of operating the electrolytic cell, due to the gravity and the effects of thermal expansion and cold contraction, a gap exists between the anode steel claw and the bottom of the carbon bowl, so that the bottom of the carbon bowl is not conductive (finished Elements in Analysis and Design, 2012, 52:71-82.Journal of Cleaner Production, 2015, 93: 174-; to solve this problem, researchers have proposed many methods. There is a document reporting a flat carbon bowl structure, and embedding a metal conductive sheet at the bottom of the anode carbon bowl (Light Metals 2015.Warrendale, PA: TMS, 2015: 1175-1180); it has also been proposed to insert metal pins into the bottom of the carbon bowl that can be inserted through the gap to connect the carbon block to the pig iron (Light Metals 2016.Warrendale, PA: TMS, 2016: 965-; there is a patent (publication No. CN107779910B) that a layer of easily conductive metal is plated on the surface of the carbon bowl to reduce the iron-carbon contact voltage drop; another patent (publication No. CN 107604384a) proposes adding a 3mm thick aluminum connecting sheet between the anode steel claw and the carbon block.
Some of the existing methods can increase the residual anode and increase the carbon consumption and the cost, some methods are complex, the existing anode process is greatly changed, and some methods have unobvious effect of reducing the contact resistance and are difficult to popularize and utilize in actual production.
SUMMERY OF THE UTILITY MODEL
To the deficiency of the prior art, the utility model provides a connection structure that is used for positive pole steel claw and positive pole charcoal piece of aluminium electroloysis adds a metal component in the method of bolt is passed through to the charcoal bowl bottom, under the prerequisite that does not change current anode manufacturing process, reduces indisputable carbon pressure drop, and then reduces whole positive pole pressure drop.
The utility model discloses a connection structure that is used for positive pole steel claw and positive pole charcoal piece of aluminium electroloysis includes positive pole steel claw 1 and positive pole charcoal piece 4, is equipped with the carbon bowl on the positive pole charcoal piece 4, installs metal component 3 on the bottom surface of carbon bowl, and in positive pole steel claw 1 inserted the carbon bowl, the bottom surface and the metal component 3 contact of positive pole steel claw 1, it has phosphorus pig iron 2 to fill between the side of positive pole steel claw 1 and the carbon bowl inner wall.
In the above connection structure, the metal member 3 is made of iron, aluminum, copper, or nickel.
Among the foretell connection structure, carbon bowl inner wall bottom is equipped with the internal thread, and perhaps carbon bowl bottom is equipped with boss 5, is equipped with the external screw thread on the 5 outer walls of boss.
In the connecting structure, the metal component 3 is cylindrical, the side wall of the metal component is provided with external threads, and the metal component 3 is connected with the internal threads at the lower part of the inner wall of the carbon bowl through the external threads; or the metal component 3 is in an inverted cylindrical shape, the inner wall of the metal component is provided with internal threads, and the internal threads of the metal component 3 are connected with the boss 5 of the external threads at the bottom of the carbon bowl through threads; or the metal component 3 is in a barrel shape and is embedded at the bottom of the carbon bowl.
In the above connection structure, when the metal member 3 is embedded in the bottom of the carbon bowl, the inner wall of the metal member 3 is aligned with the inner wall of the carbon bowl.
In the connection structure, the height of the inner thread of the carbon bowl is 1-10 cm, or the height of the outer thread of the boss 5 of the carbon bowl is 1-10 cm.
In the above connection structure, the height of the internal thread or the external thread of the metal member 3 matches with the height of the external thread or the internal thread of the carbon bowl.
The construction method of the connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis comprises the following steps:
(1) cleaning the interior of a carbon bowl of the anode carbon block 4; when the metal component 3 is cylindrical, the metal component is embedded at the bottom of the carbon bowl when the anode carbon block is manufactured;
(2) when the metal component 3 is provided with the external thread, the metal component 3 and the carbon bowl provided with the internal thread are connected together through the thread; when the metal component 3 is provided with the internal thread, the metal component 3 and the carbon bowl provided with the boss 5 are connected together through the thread;
(3) inserting the anode steel claw 1 into the carbon bowl, and connecting the bottom surface of the anode steel claw 1 with the metal component 3;
(4) and pouring molten phosphorus pig iron melt into a gap between the anode steel claw 1 and the inner wall of the carbon bowl, and cooling the phosphorus pig iron melt to normal temperature to form phosphorus pig iron 2.
In the method, the threads inside the carbon bowl are directly manufactured when the anode carbon block is prepared, or are manufactured after the anode carbon block is prepared.
The connecting structure of the utility model leads the metal component and the carbon bowl to be connected into a whole through the screw thread, the phosphorus pig iron pours the steel claw and the metal component together, and finally leads the anode steel claw-phosphorus pig iron-metal component-anode carbon block to be closely connected together, thus greatly reducing the iron-carbon pressure drop; in addition, the whole metal component and carbon bowl are simple and easy in process, the existing anode manufacturing and assembling technology cannot be greatly changed, the depth of the anode carbon bowl cannot be changed, and the anode residual anode cannot be increased; therefore, the connecting structure can greatly reduce the anode voltage drop without increasing the whole production cost, has simple process and is suitable for industrial popularization.
Drawings
Fig. 1 is a schematic view of a connection structure of an anode steel claw and an anode carbon block in embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of the carbon bowl portion of FIG. 1;
FIG. 3 is a schematic view of the connection structure of the anode steel claw and the anode carbon block in embodiment 2 of the present invention;
FIG. 4 is a schematic structural view of the carbon bowl portion of FIG. 3;
fig. 5 is a schematic view of a connection structure of an anode steel claw and an anode carbon block in embodiment 3 of the present invention;
FIG. 6 is a schematic structural view of the carbon bowl portion of FIG. 5;
in the figure, 1, a steel claw, 2, phosphorus pig iron, 3, a metal component, 4, an anode carbon block, 5 and a lug boss.
Detailed Description
The embodiment of the utility model provides an in carbon bowl internal diameter 200 mm.
In the embodiment of the utility model, the thread inside the carbon bowl is directly made when the anode carbon block is prepared, or is made after the anode carbon block is prepared.
The embodiment of the utility model provides an in, when metal component 3 passes through threaded connection through the internal thread of external screw thread and carbon bowl inner wall lower part, metal component 3's external diameter cooperatees with the carbon bowl internal diameter.
The embodiment of the utility model provides an in, when the boss 5 of the external screw thread of 3 internal threads of metal component and carbon bowl bottom passes through threaded connection, the external diameter of metal component 3 is 80 ~ 90% of carbon bowl internal diameter.
In the embodiment of the utility model provides an in, when metal component 3 for inlaying when carbon bowl bottom, metal component 3's internal diameter cooperatees with carbon bowl internal diameter.
Example 1
The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis is shown in figure 1, the carbon bowl part is shown in figure 2 and comprises an anode steel claw 1 and an anode carbon block 4, the anode carbon block 4 is provided with a carbon bowl, the bottom surface of the carbon bowl is provided with a metal component 3, the anode steel claw 1 is inserted into the carbon bowl, the bottom surface of the anode steel claw 1 is contacted with the metal component 3, and phosphorus pig iron 2 is filled between the side surface of the anode steel claw 1 and the inner wall of the carbon bowl;
the metal component 3 is made of aluminum;
the bottom of the inner wall of the carbon bowl is provided with an internal thread;
the metal component 3 is cylindrical, external threads are arranged on the side wall of the metal component, and the metal component 3 is in threaded connection with internal threads at the lower part of the inner wall of the carbon bowl through the external threads;
the height of the internal thread of the carbon bowl is 1-10 cm;
the height of the external thread of the metal component 3 is matched with that of the internal thread of the carbon bowl;
the construction method comprises the following steps:
(1) cleaning the interior of a carbon bowl of the anode carbon block 4;
(2) connecting the metal component 3 and the carbon bowl with the internal thread together through the thread;
(3) inserting the anode steel claw 1 into the carbon bowl, and connecting the bottom surface of the anode steel claw 1 with the metal component 3;
(4) and pouring molten phosphorus pig iron melt into a gap between the anode steel claw 1 and the inner wall of the carbon bowl, and cooling the phosphorus pig iron melt to normal temperature to form phosphorus pig iron 2.
By adopting the traditional mode, the anode voltage drop is 300mV when aluminum electrolysis is carried out, and by adopting the connection structure, the anode voltage drop is reduced by 40 mV.
Example 2
The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis is shown in figure 3, the carbon bowl part is shown in figure 4 and comprises an anode steel claw 1 and an anode carbon block 4, the anode carbon block 4 is provided with the carbon bowl, the bottom surface of the carbon bowl is provided with a metal component 3, the anode steel claw 1 is inserted into the carbon bowl, the bottom surface of the anode steel claw 1 is contacted with the metal component 3, and phosphorus pig iron 2 is filled between the side surface of the anode steel claw 1 and the inner wall of the carbon bowl;
the metal component 3 is made of copper;
a boss 5 is arranged at the bottom of the carbon bowl, and an external thread is arranged on the outer wall of the boss 5;
the metal component 3 is in an inverted barrel shape, the inner wall of the metal component is provided with internal threads, and the metal component is in threaded connection with a boss 5 of the external threads at the bottom of the carbon bowl through the internal threads;
the height of the external thread of the boss 5 of the carbon bowl is 10 cm;
the height of the internal thread of the metal component 3 is matched with the height of the external thread of the carbon bowl;
the construction method comprises the following steps:
(1) cleaning the interior of a carbon bowl of the anode carbon block 4;
(2) connecting the metal component 3 and the carbon bowl provided with the boss 5 together through threads;
(3) inserting the anode steel claw 1 into the carbon bowl, and connecting the bottom surface of the anode steel claw 1 with the metal component 3;
(4) pouring molten phosphorus pig iron melt into a gap between the anode steel claw 1 and the inner wall of the carbon bowl, and forming phosphorus pig iron 2 after the phosphorus pig iron melt is cooled to normal temperature;
by adopting the traditional mode, the anode voltage drop is 280mV when aluminum electrolysis is carried out, and by adopting the connection structure, the anode voltage drop is reduced by 55 mV.
Example 3
The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis is shown in figure 5, the carbon bowl part is shown in figure 6 and comprises an anode steel claw 1 and an anode carbon block 4, the anode carbon block 4 is provided with the carbon bowl, the bottom surface of the carbon bowl is provided with a metal component 3, the anode steel claw 1 is inserted into the carbon bowl, the bottom surface of the anode steel claw 1 is contacted with the metal component 3, and phosphorus pig iron 2 is filled between the side surface of the anode steel claw 1 and the inner wall of the carbon bowl;
the metal component 3 is made of iron; the height of the metal member 3 is 15 cm;
the carbon bowl is not provided with threads;
the metal component 3 is in a barrel shape and is embedded at the bottom of the carbon bowl;
the inner wall of the metal component 3 is aligned with the inner wall of the carbon bowl, namely, the inner wall and the inner wall are positioned on the same cylindrical surface;
the construction method comprises the following steps:
(1) cleaning the interior of a carbon bowl of the anode carbon block 4; when the anode carbon block is manufactured, a metal component is embedded at the bottom of a carbon bowl;
(2) inserting the anode steel claw 1 into the carbon bowl, and connecting the bottom surface of the anode steel claw 1 with the metal component 3;
(3) and pouring molten phosphorus pig iron melt into a gap between the anode steel claw 1 and the inner wall of the carbon bowl, and cooling the phosphorus pig iron melt to normal temperature to form phosphorus pig iron 2.
By adopting the traditional mode, the anode voltage drop is 320mV when aluminum electrolysis is carried out, and by adopting the connection structure, the anode voltage drop is reduced by 25 mV.
Example 4
The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis is the same as that in the embodiment 1, and the difference is that:
(1) the metal component 3 is made of nickel;
(2) the height of the internal thread of the carbon bowl is 10 cm;
by adopting the traditional mode, when aluminum electrolysis is carried out, the anode voltage drop is 280-320 mV, and by adopting the connection structure, the anode voltage drop is reduced by 35 mV.
Example 5
The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis is the same as that in the embodiment 2, and the difference is that:
the height of the external thread of the boss 5 is 8 cm;
when the traditional mode is adopted for aluminum electrolysis, the anode voltage drop is 290mV, and the anode voltage drop is reduced by 50mV by adopting the connection structure.
Example 6
The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis is the same as that in the embodiment 3, and the difference is that:
the metal component 3 is made of copper; the height of the metal member 3 is 20 cm;
by adopting the traditional mode, the anode voltage drop is 295mV when aluminum electrolysis is carried out, and by adopting the connecting structure, the anode voltage drop is reduced by 60 mV.
Example 7
The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis is the same as that in the embodiment 1, and the difference is that:
(1) the metal component 3 is made of copper;
(2) the height of the internal thread of the carbon bowl is 5 cm;
by adopting the traditional mode, the anode voltage drop is 310mV when aluminum electrolysis is carried out, and the anode voltage drop is reduced by 20mV by adopting the connecting structure.
Example 8
The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis is the same as that in the embodiment 1, and the difference is that:
(1) the metal component 3 is made of copper;
(2) the height of the internal thread of the carbon bowl is 3 cm;
by adopting the traditional mode, the anode voltage drop is 315mV when aluminum electrolysis is carried out, and by adopting the connection structure, the anode voltage drop is reduced by 25 mV.
The above-described embodiments are intended to illustrate the invention more clearly and not to limit the scope of the invention, which is defined by the appended claims, as modified by those skilled in the art in all equivalent forms.
Claims (7)
1. A connecting structure of an anode steel claw and an anode carbon block for aluminum electrolysis comprises the anode steel claw and the anode carbon block, wherein a carbon bowl is arranged on the anode carbon block, and the connecting structure is characterized in that: the bottom surface of the carbon bowl is provided with a metal component, the anode steel claw is inserted into the carbon bowl, the bottom surface of the anode steel claw is contacted with the metal component, and phosphorus pig iron is filled between the side surface of the anode steel claw and the inner wall of the carbon bowl.
2. The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis according to claim 1, wherein the metal component is made of iron, aluminum, copper or nickel.
3. The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis according to claim 1, wherein the bottom of the inner wall of the carbon bowl is provided with internal threads, or the bottom of the carbon bowl is provided with a boss, and the outer wall of the boss is provided with external threads.
4. The connecting structure of the anode steel claw and the anode carbon block for aluminum electrolysis according to claim 1, wherein the metal member is cylindrical, the side wall of the metal member is provided with external threads, and the metal member is in threaded connection with the internal threads at the lower part of the inner wall of the carbon bowl through the external threads; or the metal component is in an inverted barrel shape, the inner wall of the metal component is provided with internal threads, and the metal component is connected with the boss of the external threads at the bottom of the carbon bowl through the internal threads of the metal component; or the metal component is in a barrel shape and is embedded at the bottom of the carbon bowl.
5. The connecting structure of anode steel claw and anode carbon block for aluminum electrolysis according to claim 4, wherein when the metal member is embedded at the bottom of the carbon bowl, the inner wall of the metal member is aligned with the inner wall of the carbon bowl.
6. The connection structure of the anode steel claw and the anode carbon block for aluminum electrolysis according to claim 4, wherein the height of the internal thread of the carbon bowl is 1-10 cm, or the height of the external thread of the boss of the carbon bowl is 1-10 cm.
7. The connection structure of the anode steel claw and the anode carbon block for aluminum electrolysis according to claim 4, wherein the height of the internal thread or the external thread of the metal component is matched with the height of the external thread or the internal thread of the carbon bowl.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220458548.0U CN217499446U (en) | 2022-03-03 | 2022-03-03 | Connecting structure of anode steel claw and anode carbon block for aluminum electrolysis |
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| CN202220458548.0U CN217499446U (en) | 2022-03-03 | 2022-03-03 | Connecting structure of anode steel claw and anode carbon block for aluminum electrolysis |
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