CN114280233A - Aluminum electrolysis bath furnace side liquation process simulation device and use method thereof - Google Patents
Aluminum electrolysis bath furnace side liquation process simulation device and use method thereof Download PDFInfo
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- 238000004088 simulation Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 44
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 42
- 230000008569 process Effects 0.000 title claims abstract description 35
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 57
- 239000003792 electrolyte Substances 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000000112 cooling gas Substances 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 239000010431 corundum Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- 229910001610 cryolite Inorganic materials 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 6
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
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Abstract
The invention belongs to the technical field of aluminum electrolysis, and particularly relates to a furnace side liquation process simulation device of an aluminum electrolysis cell and a use method thereof. The simulation device comprises a simulation device body, an air cooling system and a temperature control system; the simulation device body is of an inverted T-shaped structure and comprises a base and a cuboid cold wall perpendicular to the base, a cuboid cooling cavity is formed in the cold wall, and a sealing rod is arranged at the top of the cooling cavity; the air cooling system is connected with the cooling cavity and cools the cooling cavity; a temperature control system is provided in the cold wall and molten electrolyte at the periphery of the simulator body to measure the temperature of the cold wall and molten electrolyte. The invention constructs a plane cold wall furnace upper growth model simulation device according to the side wall plane type heat dissipation structure of the actual aluminum electrolytic cell, the device can truly simulate the heat dissipation state of the operation process of the electrolytic cell, the precipitation and solidification process of the electrolyte on the simulation device is similar to the actual furnace upper growth process, and the simulation device has better experimental simulation effect.
Description
Technical Field
The invention belongs to the technical field of aluminum electrolysis, and particularly relates to a furnace side liquation process simulation device of an aluminum electrolysis cell and a use method thereof.
Background
The large prebaked cell used in the modern aluminum industry is composed of four major parts, namely a cathode structure, an upper structure, a bus structure and electrical insulation. The cathode structure is the most important component of the electrolytic cell, and is a container for holding electrolytic melt (including molten electrolyte and aluminum liquid), including a cell shell and lining masonry contained therein. The bottom of the lining masonry is built by carbon blocks, the side part is built by plates made of carbon blocks or silicon carbide and the like, and the lower part is made of refractory bricks, insulating bricks and other refractory, insulating and anti-seepage materials. After the aluminum electrolytic cell is started, a circle of solid electrolyte blocks condensed by molten electrolyte can be formed on the inner wall of the hearth, and the solid electrolyte blocks are industrially called as a furnace side. The furnace wall mainly comprises cryolite, alumina, calcium fluoride and other solid inorganic salts, and continuously forms a chamber space with different thicknesses, and electrochemical and physicochemical reactions of aluminum electrolysis are carried out in the chamber space to realize the aluminum electrolysis process. The furnace side can protect the side wall of the groove from being corroded by high-temperature corrosive electrolyte; the heat loss of the electrolytic cell is reduced, and the heat preservation of the hearth is promoted; current is prevented from flowing through the side part of the groove, and horizontal current is restrained; meanwhile, the furnace side can adjust the heat balance and the material balance of the aluminum electrolytic cell.
A well-shaped furnace is very important to obtain high current efficiency and production efficiency. At present, researchers develop a static/dynamic numerical simulation calculation method based on temperature field analysis to calculate and analyze the properties of the furnace wall of the aluminum electrolytic cell, heat transfer and the like, but due to the high-temperature corrosivity of molten electrolyte, the actual shape and change behavior of the furnace wall in the aluminum electrolytic cell are difficult to directly measure. In the prior art, patent CN109283207B discloses a detection device for simulating the growth process of an aluminum electrolytic cell furnace side, which adopts a revolving body (the material is the same as that of the side wall of an industrial electrolytic cell) with a through hole at the center to simulate the side carbon blocks and artificial extension legs of the aluminum electrolytic cell, when in use, the revolving body is put into molten industrial electrolyte, and cooling air is blown into the center hole to cool the inner wall of the hole, so that the electrolyte is solidified at the outer wall, and a simulated furnace side is obtained. The cylindrical revolving body structure adopted by the invention has a slightly larger difference with the plane side wall shape of an actual electrolytic bath, the heat transfer modes of the cylindrical revolving body structure and the actual electrolytic bath are different, the actual heat dissipation condition of the electrolytic bath cannot be really simulated, the generated furnace wall shape has a larger difference with the actual furnace wall, and the simulation device adopts a mode of blowing air into a central through hole for cooling, so that the heat transfer of the device is slow, and the temperature distribution of the outer wall is uneven due to the small volume of a cooling cavity. Therefore, in order to simulate the liquation behavior of the actual aluminum electrolytic cell furnace upper more truly and grasp the data of the generation, melting process and component distribution, microstructure and the like of the furnace upper, a simulation device and a method capable of reflecting the liquation process of the furnace upper more accurately need to be designed.
Disclosure of Invention
The invention provides an aluminum electrolysis bath furnace side elutriation process simulation device with a large-volume cooling cavity and a furnace side elutriation plane and capable of accurately controlling temperature and a using method thereof, aiming at solving the problem that a simulation device in the prior art cannot truly simulate the elutriation behavior of an actual aluminum electrolysis bath furnace side.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a simulation device for the liquation process of an aluminum electrolysis bath furnace side comprises a simulation device body, an air cooling system and a temperature control system;
the simulation device body is of an inverted T-shaped structure and comprises a base and a cuboid cold wall perpendicular to the base, a cuboid cooling cavity is formed in the cold wall, and a sealing rod is arranged at the upper part of the cooling cavity;
the air cooling system is connected with the cooling cavity and cools the cooling cavity; specifically, circulating cooling gas is introduced into the cooling cavity to control the temperature of the cold wall to be lower than the primary crystal temperature of the electrolyte, so that the electrolyte is solidified and separated out on the outer side of the cold wall to form a furnace wall;
the temperature control system is disposed in the cold wall and the molten electrolyte to measure the temperature of the cold wall and the molten electrolyte.
As a further preferable scheme, the sealing rod is provided with a cooling gas inlet and a gas outlet, the gas cooling system is connected with the cooling gas inlet and the gas outlet, and the gas cooling system conveys cooling gas into the cooling cavity through the cooling gas inlet and then discharges the cooling gas through the gas outlet.
As a further preferable mode, the cooling system comprises a cold air source container, an air inlet pipe and an air outlet pipe, the cold air source container is connected with the air inlet pipe and the air outlet pipe, the air inlet pipe penetrates through a cooling air inlet on the sealing rod and extends into the bottom of the cooling cavity, and the air outlet pipe is arranged in the air outlet.
As a further preferred scheme, the air inlet pipe is provided with a flowmeter and a cooling gas regulating valve, and the temperature of the cold wall can be accurately regulated and controlled by regulating the flow speed of the cooling gas.
As a further preferable mode, the temperature control system is a thermocouple, the thermocouple includes a first thermocouple and a second thermocouple, the first thermocouple is disposed in the molten electrolyte, and the second thermocouple is pre-embedded in the cold wall.
Further, the thermocouple is arranged at the center of the cold wall.
In a further preferred embodiment, the simulation device body is made of one of graphite, corundum, ceramic, silicon carbide and the like, and has the same material as the material of the side wall of the electrolytic cell; the air inlet pipe and the air outlet pipe are both stainless steel pipes or corundum pipes, and the air inlet pipe is used for introducing argon, nitrogen or compressed air into the cavity of the cold wall through the air inlet so as to reduce the temperature of the cold wall.
The simulation device further comprises a high-temperature reactor and a crucible, wherein the crucible is arranged in the high-temperature reactor, a molten electrolyte is arranged in the crucible, and the simulation device body is located in the molten electrolyte.
The use method of the aluminum electrolysis bath furnace side liquation process simulation device comprises the following steps:
(1) immersing the simulation device in molten electrolyte, and introducing cooling gas into the cooling cavity through a cooling system;
(2) adjusting the temperature of the cold wall by changing the flow rate of the cooling gas to make the difference value between the temperature of the cold wall and the temperature of the electrolyte to be measured consistent with the superheat degree or the target superheat degree of the actual electrolytic cell;
(3) and after the temperature is kept stable, keeping the flow rate of the cooling gas unchanged, and taking out the simulation device after keeping for a certain time to obtain the complete solidified furnace side.
Through the technical scheme, the invention has the beneficial effects that:
1. the invention constructs a plane cold wall furnace upper growth model simulation device according to the side wall plane type heat dissipation structure of the actual aluminum electrolytic cell, the device can truly simulate the heat dissipation state of the operation process of the electrolytic cell, the precipitation and solidification process of the electrolyte on the simulation device is similar to the actual furnace upper growth process, and the simulation device has better experimental simulation effect.
2. The simulation device provided by the invention is provided with the large-volume cooling cavity, and the cooling gas is introduced into the cooling cavity, so that the temperature of the cold wall can be effectively adjusted, the simulation device has the characteristics of convenience in adjustment, rapidness in response and uniform temperature, and furnace wall samples under different superheat degrees can be quickly obtained.
3. The invention can simulate the growth form of the furnace side of the electrolytic cell under different heat balance states, can provide guidance for the design optimization and daily production management of the lining structure of the modern large-scale electrolytic cell, and is beneficial to realizing the high-efficiency and stable operation of the aluminum electrolytic cell.
Drawings
FIG. 1 is a first schematic structural diagram of a simulation apparatus body of the aluminum electrolysis bath furnace side liquation process simulation apparatus of the present invention.
FIG. 2 is a schematic structural diagram II of a simulation apparatus body of the aluminum electrolytic bath furnace side liquation process simulation apparatus of the present invention.
FIG. 3 is a schematic structural diagram of a sealing rod of the furnace sidewall liquation process simulation device for an aluminum electrolysis cell of the present invention.
FIG. 4 is a schematic view showing the operation state of the apparatus for simulating the furnace sidewall liquation process of an aluminum electrolysis cell according to the present invention.
FIG. 5 is a photograph of a sample of the upper obtained by using the simulation apparatus for the liquating process of the upper of an aluminum electrolytic cell in example 1.
FIG. 6 is an SEM image of a real picture of a furnace upper obtained by using the apparatus for simulating the melting-out process of the furnace upper of the aluminum electrolytic cell in example 1 and the corresponding area.
FIG. 7 is an XRD pattern of cold wall side dense layer material.
FIG. 8 is an XRD pattern of a molten salt-side porous layer material.
In the attached drawings, 1 is a base; 2 is a cold wall; 3 is a sealing rod; 4 is a cooling cavity; 5 is a thermocouple; 6 is an air inlet pipe; 7 is an air outlet pipe; 8 is a cold air source container; 9 is molten electrolyte, 10 is a high temperature reactor, and 11 is an iron crucible.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
example 1
As shown in fig. 1 to 4, the aluminum electrolytic bath furnace side liquation process simulation device of the embodiment includes a simulation device body, an air cooling system and a temperature control system; the simulation device body is the type structure of falling T, and the simulation device body includes base 1 and perpendicular to base 1's cuboid cold wall 2, set up hollow intermediate layer in the cold wall 2, specifically be cuboid form cooling cavity 4, cooling cavity 4 upper portion is provided with sealing rod 3, cooling gas import and gas outlet have been seted up on sealing rod 3.
The air cooling system is connected with the cooling cavity 4 and cools the cooling cavity 4; specifically, circulating cooling gas is introduced into the cooling cavity 4 to control the temperature of the cold wall 2 to be lower than the primary crystal temperature of the electrolyte, so that the electrolyte is solidified and separated out on the outer side of the cold wall to form a furnace wall. Cooling system includes cold air source container 8, intake pipe 6 and outlet duct 7, cold air source container 8 is connected with intake pipe 6 and outlet duct 7, and intake pipe 6 passes the cooling gas inlet on the sealing rod 3 and stretches into 4 bottoms of cooling cavity, be provided with flowmeter and cooling gas governing valve in the intake pipe 6, can accurate regulation and control cold wall 2 temperatures through the adjustment cooling gas velocity of flow. The outlet pipe 7 is arranged in the gas outlet. The gas cooling system conveys cooling gas into the cooling cavity 4 through the cooling gas inlet and discharges the cooling gas through the gas outlet, and the temperature of the cold wall 2 is reduced by guiding out heat.
The material of the simulation device body is the same as the material of the side wall of the electrolytic bath, and is one of graphite, corundum, ceramic, silicon carbide and other materials; the air inlet pipe 6 and the air outlet pipe 7 are both stainless steel pipes or corundum pipes, and the air inlet pipe 6 introduces argon, nitrogen or compressed air into the cooling cavity 4 through the air inlet so as to reduce the temperature of the cold wall 2. In this example, nitrogen was used as the cooling gas.
The temperature control system is provided in the cold wall 2 and the molten electrolyte 9 to measure the temperature of the cold wall 2 and the molten electrolyte 9. Specifically, the temperature control system is a thermocouple 5, the thermocouple comprises a first thermocouple and a second thermocouple, the first thermocouple is arranged in the molten electrolyte 9, and the second thermocouple is pre-embedded in the center of the cold wall 2.
The simulation device further comprises a high-temperature reactor 10 and an iron crucible 11, wherein the iron crucible 11 is arranged in the high-temperature reactor 10, a molten electrolyte 9 is arranged in the iron crucible 11, and the simulation device body is located in the molten electrolyte 9.
The simulated experiment of the melting-out process of the furnace side of the aluminum electrolytic cell is carried out in a high-temperature reactor 10, industrial aluminum electrolyte powder or cryolite-based mixed salt prepared according to a certain proportion is placed in an iron crucible 11, then the iron crucible 11 is placed in a stainless steel reactor 10, the temperature is kept for 2 hours by heating to 300 ℃ in the argon protective atmosphere to dry moisture, then the temperature is slowly increased to a set temperature, after molten salt is melted to form molten electrolyte, cooling gas nitrogen is introduced into a cooling cavity 4 through a cooling system at a fixed flow rate, the nitrogen is introduced into the bottom of the cooling cavity 4 through an air inlet pipe 6 to cool a cold wall 2, and heat is discharged from an air outlet pipe 7 to lead out heat so as to reduce the temperature of the cold wall 2; the flow rate of the cooling gas is observed through a flow meter on the gas inlet pipe 6, the flow rate of the gas is adjusted through a cooling gas adjusting valve, the temperature of the cold wall 2 is further adjusted, the cold wall reaches a set overheating value (compared with the temperature of the electrolyte), the flow rate of the gas is kept stable for 1 hour after the temperature of the side wall is stabilized at a preset value, and then the simulation device is taken out, so that a complete solidified furnace side sample is obtained.
Example 2
FIG. 5 is a schematic view showing a solidified furnace wall sample obtained by introducing high purity nitrogen gas into the cooling cavity of example 1 at a flow rate of 30L/min to cool the cavity so that the temperature of the cold wall is 10 ℃ lower than the temperature of the molten electrolyte (i.e., the degree of superheat), and the shape of the obtained furnace wall is continuous and regular as shown in FIG. 5, which illustrates that the temperature of the whole cold wall can be uniformly reduced by introducing cooling gas into the cooling cavity, thereby better simulating the growth process of the electrolytic cell furnace wall.
Example 3
In the middle of fig. 6, cooling gas was introduced into the cooling cavity of example 1 to lower the temperature of the cold wall to about 20 ℃ (superheat degree) below the temperature of the molten electrolyte, and the solidified hearth wall precipitated after being kept stable for 2 hours. The microstructure of the cold wall is analyzed, and the part close to the cold wall side is found to be in a columnar crystalline state and has a compact structure; XRD results are shown in FIG. 7, which contains cryolite (Na) as the main component3AlF6) While containing a small amount of cryolite (Na)5Al3F14). The external layer structure of the furnace side close to the side of the molten electrolyte is loose and has higher porosity, and as can be seen from the XRD pattern of figure 8, the main phase of the external layer is the cryolite. The structure and the components of the furnace wall are similar to those of the real furnace wall of a 500 kA aluminum electrolytic cell reported in the literature (Zhang Qisong. the heat and mass transfer process in electrolyte phase change influences the real furnace wall [ J]) The simulation device of the invention can well simulate the real furnace side of the aluminum electrolytic cell.
The melting point of the cryolite is lower than that of cryolite (1009 ℃), and is 737 ℃. Therefore, the melting point of the outer furnace upper with the main phase of the cryolite is low, and when the superheat degree is slightly increased, the outer furnace upper is dissolved; as the degree of superheat decreases, cryolite correspondingly precipitates from the melt, forming the observed porous outer layer. That is, once the thermal balance of the electrolyzer system is broken, the porous crystalline layer of the furnace side responds rapidly with a corresponding melting/leaching change. This law is consistent with that observed in actual production practice. The simulation device can better simulate the liquation process of the electrolytic bath furnace side and is suitable for researching the influence rule of the electrolysis process parameters such as superheat degree, molecular ratio and the like on the furnace side.
The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.
Claims (10)
1. A simulation device for the liquation process of an aluminum electrolysis bath furnace side comprises a simulation device body, an air cooling system and a temperature control system; it is characterized in that the preparation method is characterized in that,
the simulation device body is of an inverted T-shaped structure and comprises a base (1) and a cuboid cold wall (2) perpendicular to the base (1), a cuboid cooling cavity (4) is formed in the cold wall (2), and a sealing rod (3) is arranged on the upper portion of the cooling cavity (4);
the air cooling system is connected with the cooling cavity (4) and cools the cooling cavity (4);
the temperature control system is arranged in the cold wall (2) and the molten electrolyte (9) at the periphery of the simulation device body to measure the temperature of the cold wall (2) and the molten electrolyte (9).
2. The aluminum electrolysis bath furnace side liquation process simulation device according to claim 1, wherein the sealing rod (3) is provided with a cooling gas inlet and a gas outlet, and the gas cooling system is connected with the cooling gas inlet and the gas outlet.
3. The aluminum electrolytic bath furnace side liquation process simulation device according to claim 2, wherein the cooling system comprises a cold air source container (8), an air inlet pipe (6) and an air outlet pipe (7), the cold air source container (8) is connected with the air inlet pipe (6) and the air outlet pipe (7), the air inlet pipe (6) penetrates through a cooling gas inlet on the sealing rod (3) and extends into the bottom of the cooling cavity (4), and the air outlet pipe (7) is arranged in the gas outlet.
4. The aluminum electrolysis bath furnace side liquation process simulation device according to claim 1, wherein a flow meter and a cooling gas regulating valve are arranged on the air inlet pipe (6).
5. The aluminum reduction cell furnace side liquation process simulation device according to claim 1, wherein the temperature control system is a thermocouple (5), the thermocouple comprises a first thermocouple and a second thermocouple, the first thermocouple is arranged in the molten electrolyte (9) at the periphery of the simulation device body, and the second thermocouple is pre-embedded in the center of the cold wall (2).
6. The apparatus according to claim 1, wherein the simulating apparatus body is made of one of graphite, corundum, ceramic and silicon carbide; the air inlet pipe (6) and the air outlet pipe (7) are both stainless steel pipes or corundum pipes.
7. The aluminum reduction cell furnace side liquation process simulation device according to claim 1, characterized in that the simulation device further comprises a high temperature reactor (10) and a crucible (11), the crucible (11) is arranged in the high temperature reactor (10), the crucible (11) is provided with molten electrolyte (9), and the simulation device body is positioned in the molten electrolyte (9).
8. The use method of the aluminum electrolysis bath furnace side liquation process simulation device of claim 1, which is characterized by comprising the following steps:
(1) immersing the simulation device in molten electrolyte, and introducing cooling gas into the cooling cavity through a cooling system;
(2) the temperature of the cold wall is adjusted by changing the flow rate of the cooling gas, so that the difference value between the temperature of the cold wall and the measured temperature of the molten electrolyte is consistent with the superheat degree or the target superheat degree of the actual electrolytic cell;
(3) and after the temperature is kept stable, keeping the flow rate of the cooling gas unchanged, and taking out the simulation device after keeping for a certain time to obtain the complete solidified furnace side.
9. Use according to claim 8, wherein the cooling gas is argon, nitrogen or compressed air.
10. The use method according to claim 8, wherein the cold wall temperature in step (1) is 5-20 ℃ lower than the molten electrolyte temperature; the maintaining time in the step (3) is 1-2 hours.
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| CN202111509915.1A CN114280233A (en) | 2021-12-10 | 2021-12-10 | Aluminum electrolysis bath furnace side liquation process simulation device and use method thereof |
| PCT/CN2022/099512 WO2023103324A1 (en) | 2021-12-10 | 2022-06-17 | Side-ledge melting process simulation device for aluminum electrolysis cell, and method of using same |
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| WO2023103324A1 (en) * | 2021-12-10 | 2023-06-15 | 郑州大学 | Side-ledge melting process simulation device for aluminum electrolysis cell, and method of using same |
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|---|---|---|---|---|
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| CN109570464B (en) * | 2019-01-21 | 2019-10-18 | 中南大学 | A kind of device and method for simulating thin-band continuous-casting crystallized device initial solidification |
| CN213121688U (en) * | 2020-07-31 | 2021-05-04 | 北京科技大学 | Test system for evaluating hot surface viscous layer properties of blast furnace hearth |
| CN213813437U (en) * | 2020-12-24 | 2021-07-27 | 郑州轻冶科技股份有限公司 | Aluminum electrolysis cell simulation test device and aluminum electrolysis cell simulation test system |
| CN114280233A (en) * | 2021-12-10 | 2022-04-05 | 郑州大学 | Aluminum electrolysis bath furnace side liquation process simulation device and use method thereof |
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| US20050151306A1 (en) * | 2001-12-13 | 2005-07-14 | Sokolowski Jerzy H. | Method and apparatus for universal metallurgical simulation and analysis |
| CN109283207A (en) * | 2018-11-02 | 2019-01-29 | 中南大学 | The detection device and method of a kind of simulation electrolytic bath of aluminium side growth course |
| CN112595762A (en) * | 2020-12-24 | 2021-04-02 | 郑州轻冶科技股份有限公司 | Aluminum electrolysis cell simulation test device and aluminum electrolysis cell simulation test system |
| CN113432439A (en) * | 2021-07-29 | 2021-09-24 | 东北大学 | Cooling method for aluminum electrolysis cell after stopping operation |
| CN216955917U (en) * | 2021-12-10 | 2022-07-12 | 郑州大学 | Aluminum electrolysis bath furnace side liquation process simulation device |
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| WO2023103324A1 (en) * | 2021-12-10 | 2023-06-15 | 郑州大学 | Side-ledge melting process simulation device for aluminum electrolysis cell, and method of using same |
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