CN215440711U - Continuous blanking device of aluminum cell - Google Patents
Continuous blanking device of aluminum cell Download PDFInfo
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- CN215440711U CN215440711U CN202120958270.9U CN202120958270U CN215440711U CN 215440711 U CN215440711 U CN 215440711U CN 202120958270 U CN202120958270 U CN 202120958270U CN 215440711 U CN215440711 U CN 215440711U
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Abstract
The utility model discloses a continuous blanking device of an aluminum electrolytic cell, which comprises: the material box is filled with alumina powder; the electrolytic cell is arranged below the material box, electrolyte is arranged inside the electrolytic cell, the upper layer of the electrolyte is provided with a shell surface, and the lower layer of the electrolyte is provided with aluminum liquid; the hollow shaft is internally provided with a material pipe, one end of the material pipe is connected to the bottom of the material box, the other end of the material pipe extends below the liquid level of the electrolyte, and the alumina powder of the material box can be input into the electrolyte through the material pipe; the stirring unit is arranged at the bottom of the material pipe and can stir the electrolyte; and a driving unit connected to the hollow shaft. The utility model can realize continuous feeding without crust breaking operation, can reduce the heat loss of the electrolytic cell in the feeding process, can ensure that the concentration of the aluminum oxide in the electrolytic cell is always in a stable and optimal state, and reduces the energy consumption of the electrolytic cell.
Description
Technical Field
The utility model relates to the technical field of electrolytic cells, in particular to a continuous blanking device for an aluminum electrolytic cell.
Background
In modern aluminum industrial production, a cryolite-alumina fused salt electrolysis method is mainly adopted, and a carbon anode and a carbon cathode are adopted as an anode and a cathode for electrolysis. The direct current is introduced into the electrolytic cell to carry out electrochemical reaction on the cathode and the anode. The electrolysis product is aluminum liquid on the cathode and CO on the anode2And CO gas. And pumping out the aluminum liquid by using a vacuum ladle, and pouring the aluminum liquid into commercial aluminum ingots after purification and clarification. The electrolysis reaction equation is 2AL2O3+3C＝4AL+3CO2。
The upper layer of the distribution structure of various substances in the electrolytic cell is electrolyte, and the lower layer is aluminum liquid. Research results show that the aluminum oxide is only dissolved in the electrolyte layer and basically not dissolved in the aluminum liquid layer. Traditional electrolysis trough unloader is constant volume unloader, and the cooperation crust breaking cylinder function is used, and its principle is that aluminium oxide is stored in the feed pipe advances into the feed box from electrolysis trough upper portion, and the crust face is opened in the action of crust breaking device, and aluminium oxide gets into the electrolysis trough along with the feed pipe after the action of unloading cylinder in the feed box after the settlement time, dissolves gradually in the electrolyte layer at the in-process that sinks.
The blanking mode is applied for a long time and makes a certain contribution to the development of the aluminum industry in China, but the defects of the blanking mode are gradually highlighted along with the continuous improvement of the requirements on energy saving, consumption reduction, digital management, fine management and the like of the electrolytic cell. When the fire hole is not completely opened in the automatic crust breaking process, the constant-volume feeder in the material box still acts to cause that alumina does not completely enter the electrolytic cell, the concentration of the alumina in the electrolytic cell becomes low, an anode effect is induced to a certain degree and cannot be processed in time, the anode effect is frequently generated, a large amount of heat is generated to increase the temperature of electrolyte, and then the legs at the edge part are melted to collapse the hearth, so that the level of the aluminum is reduced; when the constant volume feeder works normally, the input amount of alumina in the electrolytic cell is excessive, and when the excessive alumina exceeds the dissolution speed and the solubility of the electrolyte, the effect of the electrolytic cell is delayed or does not occur, and the residual alumina passes through the electrolyte layer and the aluminum liquid layer to generate precipitation at the furnace bottom, so that the resistance of the furnace bottom is increased. The electrolyte saturated with alumina has good wettability to carbon, carbon residue cannot be separated, and the electrolyte resistance becomes large, which leads to increase of cell voltage, increase of resistance heat, and increase of cell temperature.
SUMMERY OF THE UTILITY MODEL
Therefore, the continuous blanking device for the aluminum electrolysis cell, which can continuously blank without performing crust breaking operation, can reduce the heat loss of the electrolysis cell in the blanking process, can ensure that the concentration of aluminum oxide in the electrolysis cell is always in a stable and optimal state, and reduces the energy consumption of the electrolysis cell, is needed to solve the technical problems.
A continuous blanking device of an aluminum electrolysis cell comprises:
the material box is filled with alumina powder;
the electrolytic cell is arranged below the material box, electrolyte is arranged inside the electrolytic cell, the upper layer of the electrolyte is provided with a shell surface, and the lower layer of the electrolyte is provided with aluminum liquid;
a material pipe is arranged in the hollow shaft, one end of the material pipe is connected to the bottom of the material box, the other end of the material pipe extends below the liquid level of the electrolyte, and the alumina powder of the material box can be input into the electrolyte through the material pipe;
the stirring unit is arranged at the bottom of the material pipe and can stir the electrolyte;
and a driving unit connected to the hollow shaft, the driving unit being capable of driving the hollow shaft and the agitating unit to rotate.
In one embodiment, the stirring unit includes a sealing plate fixed to the bottom of the hollow shaft, the material pipe passes through the middle of the sealing plate, and a rotor fixed to the outer side of the sealing plate.
In one embodiment, the driving unit includes a bearing seat, a bearing, a first transmission gear, a second transmission gear and a motor, the upper portion of the hollow shaft is connected with the bearing seat through the bearing, the first transmission gear is arranged on the hollow shaft and located above the bearing seat, the second transmission gear is connected with the motor, and the first transmission gear is matched with the second transmission gear.
In one embodiment, the motor is further connected with a cell control machine through a frequency converter, the cell control machine is connected with a voltage measuring unit, and the voltage measuring unit can measure the electrolytic voltage in the electrolytic cell.
In one embodiment, the top of the bin is provided with a filling pipe, the filling pipe is connected with a pneumatic chute, the pneumatic chute can convey alumina powder into the bin through wind pressure and the filling pipe, the top of the bin is provided with an exhaust pipe, and a filter screen is arranged in the exhaust pipe.
Above-mentioned continuous unloader of aluminium cell directly inputs the liquid level of electrolyte through the material pipe under, and the stirring unit can carry out 360 degrees rotations, makes the alumina powder can evenly spread and dissolve in the electrolyte to can realize continuous unloading, need not to carry out the crust breaking operation, can reduce electrolysis trough calorific loss at the unloading in-process, can guarantee again that the alumina concentration is in steady optimal state all the time in the electrolysis trough, reduce the electrolysis trough energy consumption.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the continuous blanking device of the aluminum electrolytic cell of the present invention.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an embodiment of the present invention provides a continuous blanking apparatus for an aluminum electrolytic cell, including:
the device comprises a material box 1, wherein alumina powder is filled in the material box 1;
the electrolytic cell 2 is arranged below the material box 1, an electrolyte 3 is arranged inside the electrolytic cell 2, the upper layer of the electrolyte 3 is provided with a shell surface 4, and the lower layer of the electrolyte 3 is provided with aluminum liquid 5;
a material pipe 7 is arranged inside the hollow shaft 6, one end of the material pipe 7 is connected to the bottom of the material box 1, the other end of the material pipe 7 extends below the liquid level of the electrolyte 3, and the alumina powder of the material box 1 can be input into the electrolyte 3 through the material pipe 7;
a stirring unit 8 disposed at the bottom of the feed pipe 7, the stirring unit 8 being capable of stirring the electrolyte 3;
and a driving unit 9 connected to the hollow shaft 6, wherein the driving unit 9 can drive the hollow shaft 6 and the stirring unit 8 to rotate.
Specifically, the stirring unit 8 includes a sealing plate 81 and a rotor 82, the sealing plate 81 is fixed to the bottom of the hollow shaft 6, the feed pipe 7 passes through the middle of the sealing plate 81, and the rotor 82 is fixed to the outer side surface of the sealing plate 81. So set up, the shrouding 81 can the shutoff quill shaft 6 on the one hand, prevents that electrolyte 3 from entering into the quill shaft 6, and another makes things convenient for shrouding 81 can also carry on spacingly to the bottom position of material pipe 7, improves the stability of material pipe 7 unloading in-process. Further, the electrolyte 3 is stirred by the rotation of the rotor 82.
In an embodiment of the present invention, the driving unit 9 includes a bearing seat 91, a bearing 92, a first transmission gear 93, a second transmission gear 94 and a motor 95, the upper portion of the hollow shaft 6 is connected to the bearing seat 92 through the bearing 92, the first transmission gear 93 is disposed on the hollow shaft 6 and located above the bearing seat 91, the second transmission gear 94 is connected to the motor 95, and the first transmission gear 93 is matched with the second transmission gear 94. The second transmission gear 94 is driven by the motor 95 to rotate, and the first transmission gear 93 is driven to rotate, so that the hollow shaft 6 and the rotor 82 can rotate.
In an embodiment of the present invention, the motor 95 is further connected to a cell controller 11 through a frequency converter 10, the cell controller 11 is connected to a voltage measuring unit 12, and the voltage measuring unit 12 can measure the electrolytic voltage in the electrolytic cell 2.
It should be noted that the voltage measuring unit 12 feeds back a real-time operating voltage signal of the electrolytic cell 2 to the cell control machine 11, and the cell control machine 11 sends a feedback signal to the frequency converter 10 according to the real-time concentration of the alumina in the electrolytic cell 2 after calculation; after receiving the rotation speed signal, the frequency converter 10 drives the motor 95 to operate at a certain rotation speed, the motor 95 controls the operation and the blanking speed of the hollow shaft 6 and the rotor 82 through the second transmission gear 94, alumina powder enters the electrolyte 3 of the electrolytic bath 2 from the material box 1 along with the hollow shaft 6 and the rotor 82, the alumina powder is blanked uninterruptedly in the whole process and uniformly enters the electrolytic bath 2, and the balance of the alumina concentration in the electrolytic bath 2 is realized.
Optionally, the top of workbin 1 is equipped with material filling pipe 13, material filling pipe 13 is connected with pnematic chute 14, pnematic chute 14 can be in with alumina powder through wind pressure and material filling pipe 13 carry in the workbin 1, wherein, the top of workbin 1 is equipped with blast pipe 15, be equipped with filter screen 16 in the blast pipe 15.
In summary, the utility model has the advantages that:
above-mentioned continuous unloader of aluminium cell directly inputs the liquid level of electrolyte through the material pipe under, and the stirring unit can carry out 360 degrees rotations, makes the alumina powder can evenly spread and dissolve in the electrolyte to can realize continuous unloading, need not to carry out the crust breaking operation, can reduce electrolysis trough calorific loss at the unloading in-process, can guarantee again that the alumina concentration is in steady optimal state all the time in the electrolysis trough, reduce the electrolysis trough energy consumption.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A continuous blanking device of an aluminum electrolytic cell is characterized by comprising:
the material box is filled with alumina powder;
the electrolytic cell is arranged below the material box, electrolyte is arranged inside the electrolytic cell, the upper layer of the electrolyte is provided with a shell surface, and the lower layer of the electrolyte is provided with aluminum liquid;
a material pipe is arranged in the hollow shaft, one end of the material pipe is connected to the bottom of the material box, the other end of the material pipe extends below the liquid level of the electrolyte, and the alumina powder of the material box can be input into the electrolyte through the material pipe;
the stirring unit is arranged at the bottom of the material pipe and can stir the electrolyte;
and a driving unit connected to the hollow shaft, the driving unit being capable of driving the hollow shaft and the agitating unit to rotate.
2. The continuous blanking device for aluminum reduction cells as recited in claim 1, wherein the stirring unit comprises a sealing plate fixed to the bottom of the hollow shaft, the feed tube passes through the middle of the sealing plate, and a rotor fixed to the outer side of the sealing plate.
3. The continuous blanking device for the aluminum reduction cell according to claim 2, wherein the driving unit comprises a bearing seat, a bearing, a first transmission gear, a second transmission gear and a motor, the upper part of the hollow shaft is connected with the bearing seat through the bearing, the first transmission gear is arranged on the hollow shaft and positioned above the bearing seat, the second transmission gear is connected with the motor, and the first transmission gear is matched with the second transmission gear.
4. The aluminum reduction cell continuous blanking device of claim 3, wherein the motor is further connected with a cell control machine through a frequency converter, the cell control machine is connected with a voltage measuring unit, and the voltage measuring unit can measure the electrolysis voltage in the electrolytic cell.
5. The continuous blanking device for the aluminum reduction cell according to claim 1, wherein the top of the material box is provided with a material filling pipe, the material filling pipe is connected with a pneumatic chute, the pneumatic chute can convey the alumina powder into the material box through wind pressure and the material filling pipe, the top of the material box is provided with an exhaust pipe, and a filter screen is arranged in the exhaust pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120958270.9U CN215440711U (en) | 2021-05-07 | 2021-05-07 | Continuous blanking device of aluminum cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120958270.9U CN215440711U (en) | 2021-05-07 | 2021-05-07 | Continuous blanking device of aluminum cell |
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| Publication Number | Publication Date |
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| CN215440711U true CN215440711U (en) | 2022-01-07 |
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| CN202120958270.9U Expired - Fee Related CN215440711U (en) | 2021-05-07 | 2021-05-07 | Continuous blanking device of aluminum cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116240586A (en) * | 2023-04-04 | 2023-06-09 | 北京华索科技股份有限公司 | Aluminum oxide continuous blanking device and method for aluminum electrolysis cell |
-
2021
- 2021-05-07 CN CN202120958270.9U patent/CN215440711U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116240586A (en) * | 2023-04-04 | 2023-06-09 | 北京华索科技股份有限公司 | Aluminum oxide continuous blanking device and method for aluminum electrolysis cell |
| CN116240586B (en) * | 2023-04-04 | 2023-11-10 | 北京华索科技股份有限公司 | Aluminum oxide continuous blanking device and method for aluminum electrolysis cell |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |