CN116815253A - Temperature monitoring method and system for continuous anode of aluminum electrolysis - Google Patents

Temperature monitoring method and system for continuous anode of aluminum electrolysis Download PDF

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Publication number
CN116815253A
CN116815253A CN202310789303.5A CN202310789303A CN116815253A CN 116815253 A CN116815253 A CN 116815253A CN 202310789303 A CN202310789303 A CN 202310789303A CN 116815253 A CN116815253 A CN 116815253A
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China
Prior art keywords
temperature
anode
continuous anode
aluminum electrolysis
continuous
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CN202310789303.5A
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Chinese (zh)
Inventor
李琰
周益文
张艳芳
张烁
韦芳舒
赵清杰
张保伟
王跃勇
刘巧云
宋转
韩莉
王园方
李雪原
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China Aluminum Zhengzhou Research Institute Of Nonferrous Metals Co ltd
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China Aluminum Zhengzhou Research Institute Of Nonferrous Metals Co ltd
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Priority to CN202310789303.5A priority Critical patent/CN116815253A/en
Publication of CN116815253A publication Critical patent/CN116815253A/en
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    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12Anodes
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/20Automatic control or regulation of cells

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  • 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

The application relates to a temperature monitoring method of an aluminum electrolysis continuous anode, which comprises the following steps: adding an anode paste into the anode frame of the continuous anode electrolyzer; setting a plurality of detection surfaces in the anode paste, setting a temperature detection device on the detection surfaces, and establishing a spatial distribution model of the temperature detection device; continuous anode roasting production is carried out, and real-time temperature is obtained through a temperature detection device; establishing a plurality of isothermal surfaces through the real-time temperature and the spatial distribution model, and establishing a temperature distribution model of the continuous anode through the isothermal surfaces; establishing a temperature threshold model according to the technological requirements of continuous anode roasting; substituting the information in the temperature distribution model into the temperature threshold model, and judging whether the roasting temperature is too high. The application has the real-time monitoring capability, higher accuracy and better adaptability to severe production environment.

Description

Temperature monitoring method and system for continuous anode of aluminum electrolysis
Technical Field
The application relates to the field of aluminum electrolysis, in particular to aluminum electrolysis anode temperature management.
Background
In the continuous anode production process, the anode is an important component for bearing current and is one of key factors influencing the aluminum production effect, and when the roasting temperature change of the anode is monitored and the condition that the temperature of the anode is too low or too high is monitored, adjustment and treatment can be timely given, so that the production quality of continuous anode aluminum electrolysis is prevented from being influenced, and the method is very important for stable operation of the production process. At present, the traditional anode roasting temperature detection method is mainly realized through manual measurement, on one hand, the manual detection is influenced by factors such as subjective ability and operation experience of personnel, errors of different degrees can be brought, the anode temperature cannot be monitored rapidly and accurately, on the other hand, the manual detection can only be monitored at a certain moment, the anode roasting temperature is difficult to monitor continuously in all weather and for a long time, meanwhile, the anode roasting temperature is in complex and severe working environments such as high temperature and high current in the continuous anode aluminum electrolysis production process, and personal injury is easily caused by the manual detection. In the comprehensive view, in continuous anode production, the manual detection effect is poor.
Disclosure of Invention
The embodiment of the application provides a temperature monitoring method and a temperature monitoring system for an aluminum electrolysis continuous anode, which are used for solving the technical problem that the temperature effect is poor in manual detection in continuous anode production.
In a first aspect, an embodiment of the present application provides a method for monitoring a temperature of an aluminum electrolysis continuous anode, where the method for monitoring a temperature of an aluminum electrolysis continuous anode includes the following steps:
providing a continuous anode electrolytic cell, and adding anode paste into an anode frame of the continuous anode electrolytic cell;
setting a plurality of detection surfaces in the anode paste, setting a temperature detection device on each detection surface, and establishing a spatial distribution model of the temperature detection device;
continuous anode roasting production is carried out, and the real-time temperature of each temperature detection device is obtained through the temperature detection devices;
establishing a plurality of isothermal surfaces through the real-time temperature and the spatial distribution model, and establishing a temperature distribution model of the continuous anode through the isothermal surfaces;
establishing a temperature threshold model according to the technological requirements of continuous anode roasting;
substituting the information in the temperature distribution model into the temperature threshold model, and judging whether the roasting temperature is too high.
In some embodiments of the present application, the temperature monitoring method of the aluminum electrolysis continuous anode further comprises the steps of:
and when the roasting temperature is judged to be too high, early warning is carried out.
In some embodiments of the application, modeling the temperature distribution of the continuous anode through the isothermal surface comprises the steps of:
calculating a temperature gradient between each isothermal surface and an adjacent isothermal surface through the real-time temperature;
and establishing a temperature distribution model of the continuous anode through the temperature gradient.
In some embodiments of the application, the distances between adjacent detection surfaces are equal.
In some embodiments of the application, the detection surface is perpendicular to the height direction of the anode frame and is distributed along the height direction.
In a second aspect, an embodiment of the present application provides a temperature monitoring system for an aluminum electrolysis continuous anode, the temperature monitoring system for an aluminum electrolysis continuous anode comprising:
the temperature detection device is used for detecting temperature and generating a signal according to a detection result;
the data acquisition module is in communication connection with the temperature detection device and is used for processing signals generated by the temperature detection device and generating data;
the data processing module is in communication connection with the data acquisition module and is used for processing data generated by the data acquisition device through a data model and feeding back a processing result.
In some embodiments of the application, the temperature monitoring system of the aluminum electrolysis continuous anode further comprises:
and the early warning module is in communication connection with the data processing module and is used for carrying out early warning according to the feedback result of the data processing module.
In some embodiments of the application, the temperature monitoring system of the aluminum electrolysis continuous anode further comprises:
and the man-machine interaction module is in communication connection with the data processing module and is used for displaying the condition of the data processing module for processing the data in real time.
In some embodiments of the present application, the man-machine interaction module is further in communication connection with the early warning module, and the man-machine interaction module is further used for manually starting the early warning module to perform early warning.
In some embodiments of the application, the temperature monitoring system of the aluminum electrolysis continuous anode further comprises:
the data storage module is in communication connection with the data processing module and is used for recording the data processing process of the data processing module.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
according to the temperature monitoring method for the continuous anode of the aluminum electrolysis, provided by the embodiment of the application, the real-time temperature of the detection surface is detected through the temperature detection device, the isothermal surface is established through the real-time temperature, the temperature distribution model of the continuous anode of the isothermal surface bar is established through the real-time temperature, the temperature threshold value model is established and the temperature distribution model is substituted into the isothermal surface bar to judge whether the roasting temperature is too high, so that the temperature state of the continuous anode can be effectively mastered through the temperature distribution model without manually detecting the temperature, and whether the roasting temperature is too high can be accurately judged through the temperature threshold value model.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic flow chart of a temperature monitoring method for an aluminum electrolysis continuous anode according to an embodiment of the application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Unless specifically stated otherwise, the terms used herein should be understood as meaning as commonly used in the art. Accordingly, 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 application belongs. In case of conflict, the present specification will control.
Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present application are commercially available or may be prepared by existing methods.
The technical problem of poor manual temperature detection effect exists in the existing continuous anode production.
The technical scheme provided by the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
in a first aspect, referring to fig. 1, fig. 1 shows flow steps of a temperature monitoring method for an aluminum electrolysis continuous anode, where the temperature monitoring method for an aluminum electrolysis continuous anode includes the following steps:
s1: providing a continuous anode electrolytic cell, and adding anode paste into an anode frame of the continuous anode electrolytic cell;
s2: setting a plurality of detection surfaces in the anode paste, setting a temperature detection device on each detection surface, and establishing a spatial distribution model of the temperature detection device;
s3: continuous anode roasting production is carried out, and the real-time temperature of each temperature detection device is obtained through the temperature detection devices;
s4: establishing a plurality of isothermal surfaces through the real-time temperature and the spatial distribution model, and establishing a temperature distribution model of the continuous anode through the isothermal surfaces;
s5: establishing a temperature threshold model according to the technological requirements of continuous anode roasting;
s6: substituting the information in the temperature distribution model into the temperature threshold model, and judging whether the roasting temperature is too high.
As will be understood by those skilled in the art, continuous anode production refers to the process of filling kneaded anode paste from above into the anode aluminum frame in the upper portion of the cell, melting the lower portion of the anode paste in the tank due to the high temperature of the electrolyte in the lower portion of the cell, sintering into a solid as the anode of the continuous anode cell, and producing electrolytic aluminum. Continuous anode production is generally achieved by a continuous anode cell by adding an anode paste to the anode frame of the continuous anode cell, and then energizing and firing the anode paste to obtain a continuous anode.
The temperature threshold model is established and optimized according to the technological requirement of continuous anode roasting temperature and actual conditions, and can adopt a method combining experiments and simulation, and the optimal roasting temperature range and parameters are determined by analyzing and testing the components, the structure and the properties of anode materials and simulating and optimizing the influence of electrolysis temperature on roasting temperature so as to improve the production efficiency and the product quality. The model is used for temperature early warning.
Substituting information in the temperature distribution model into the temperature threshold model, wherein the specific implementation mode is to couple the isothermal surface position of the temperature detection device in the temperature distribution model with the isothermal surface position of the threshold model, and determine the optimal roasting temperature range and parameters according to the calculation result of the temperature threshold model so as to realize more accurate control and optimization of the rate electrolysis continuous anode production process.
In step S6, the baking temperature is not limited to the real-time temperature, and is substantially equal to the temperature state of the continuous anode calculated by the temperature distribution model.
The application detects the real-time temperature of the detection surface through the temperature detection device, establishes the isothermal surface through the real-time temperature, establishes the temperature distribution model of the isothermal surface bar continuous anode, establishes the temperature threshold model and substitutes the temperature distribution model into the isothermal surface bar continuous anode temperature distribution model to judge whether the roasting temperature is too high, so that the temperature information can be obtained in real time without manually detecting the temperature, the temperature state of the continuous anode can be effectively mastered through the temperature distribution model, and whether the roasting temperature is too high can be accurately judged through the temperature threshold model.
In some embodiments of the present application, the temperature monitoring method of the aluminum electrolysis continuous anode further comprises the steps of:
s7: and when the roasting temperature is judged to be too high, early warning is carried out.
After the early warning is carried out, the technical staff can be timely reminded of carrying out the adjustment of related parameters.
In some embodiments of the application, modeling the temperature distribution of the continuous anode through the isothermal surface comprises the steps of:
s41: calculating the temperature gradient between each isothermal surface and the adjacent isothermal detection through the real-time temperature;
s42: and establishing a temperature distribution model of the continuous anode through the temperature gradient.
The overall temperature distribution condition of the continuous anode can be known more effectively by calculating the isothermal gradient, so that a temperature distribution model is established.
In some embodiments of the application, the distances between adjacent detection surfaces are equal.
The distances between adjacent detection surfaces are equal, so that the influence of errors is more dispersed, and the calculation result of the temperature gradient is more accurate.
In some embodiments of the application, the detection surface is perpendicular to the height direction of the anode frame and is distributed along the height direction.
In a second aspect, an embodiment of the present application provides a temperature monitoring system for an aluminum electrolysis continuous anode, the temperature monitoring system for an aluminum electrolysis continuous anode comprising:
the temperature detection device is used for detecting temperature and generating a signal according to a detection result;
the data acquisition module is in communication connection with the temperature detection device and is used for processing signals generated by the temperature detection device and generating data;
the data processing module is in communication connection with the data acquisition module and is used for processing data generated by the data acquisition device through a data model and feeding back a processing result.
The temperature monitoring system of the aluminum electrolysis continuous anode can be used for implementing the temperature monitoring method of the aluminum electrolysis continuous anode.
The temperature detection device may acquire the real-time temperature.
The data processing module is used for establishing a temperature distribution model of the continuous anode through the real-time temperature, substituting information in the temperature distribution model into the temperature threshold model and feeding back after judging whether the roasting temperature is too high.
In some embodiments of the application, the temperature monitoring system of the aluminum electrolysis continuous anode further comprises:
and the early warning module is in communication connection with the data processing module and is used for carrying out early warning according to the feedback result of the data processing module.
And when the data processing module feeds back that the roasting temperature is too high, the early warning module carries out early warning.
In some embodiments of the application, the temperature monitoring system of the aluminum electrolysis continuous anode further comprises:
and the man-machine interaction module is in communication connection with the data processing module and is used for displaying the condition of the data processing module for processing the data in real time.
The man-machine interaction module can display the condition of the data processed by the data processing module in real time so as to be used for a technician to refer to and monitor the condition of the continuous anode.
In some embodiments of the present application, the man-machine interaction module is further in communication connection with the early warning module, and the man-machine interaction module is further used for manually starting the early warning module to perform early warning.
Whether the temperature distribution model exceeds the limit value of the temperature threshold model or not can not reflect all temperature abnormal conditions, such as the conditions of excessively low temperature or severe temperature change, severe fluctuation and the like, the man-machine interaction module can display the condition that the data processing module processes the data in real time, and a technician can monitor the temperature abnormal conditions according to the man-machine interaction module and manually perform early warning.
In some embodiments of the application, the temperature monitoring system of the aluminum electrolysis continuous anode further comprises:
the data storage module is in communication connection with the data processing module and is used for recording the data processing process of the data processing module.
The data storage module can be used for data backtracking, and can be used for researching further temperature change rules or backtracking after faults occur.
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. The experimental procedures, which are not specified in the following examples, are generally determined according to national standards. If the corresponding national standard does not exist, the method is carried out according to the general international standard, the conventional condition or the condition recommended by the manufacturer.
Examples
The embodiment provides a temperature monitoring method of an aluminum electrolysis continuous anode, which comprises the following steps:
sa: providing a continuous anode electrolytic cell, and adding anode paste into an anode frame of the continuous anode electrolytic cell;
specifically, the anode frame has a length l=3000 mm, a width d=2600 mm and a height h=740 mm; in the range of the height h of the anode frame, every 0.25m is an anode temperature detection surface, and the anode temperature detection surfaces are distributed along the height direction of the anode frame and are perpendicular to the height direction of the anode frame.
Sb: setting a plurality of detection surfaces in the anode paste, and setting a temperature detection device on each detection surface;
the anode frame area was calculated as: s=ld (squaremeter), a temperature detection devices are arranged on each anode temperature detection surface;
sc: continuous anode roasting production is carried out, and the real-time temperature of each detection surface is obtained through the temperature detection device;
sd: establishing a plurality of isothermal surfaces through the real-time temperature and the spatial distribution model, calculating the temperature gradient between each isothermal surface and adjacent isothermal detection through the real-time temperature, and establishing a temperature distribution model of the continuous anode through the temperature gradient;
at a certain moment, the temperature gradient is specifically t1=850-930 ℃, t2=460-850 ℃, and t3=200-460 ℃ from the lower end to the upper end of the anode frame.
Se: establishing a temperature threshold model according to the technological requirements of continuous anode roasting;
the temperature threshold model in the embodiment is specifically that T1 is more than or equal to 850 ℃ and less than 930 ℃, T2 is more than or equal to 460 ℃ and less than 850 ℃, and T3 is more than or equal to 200 ℃ and less than 460 ℃.
Sf: substituting the information in the temperature distribution model into the temperature threshold model, judging whether the roasting temperature is too high, and giving an early warning when judging that the roasting temperature is too high.
Various embodiments of the application may exist in a range of forms; it should be understood that the description in a range format is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the application; it is therefore to be understood that the range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that a description of a range from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5, and 6, wherever applicable. In addition, whenever a numerical range is referred to herein, it is meant to include any reference number (fractional or integer) within the indicated range.
In the present application, unless otherwise specified, terms such as "upper" and "lower" are used specifically to refer to the orientation of the drawing in the figures. In addition, in the description of the present specification, the terms "include", "comprising" and the like mean "including but not limited to". Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element. Relational terms such as "first" and "second", and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Herein, "and/or" describing an association relationship of an association object means that there may be three relationships, for example, a and/or B, may mean: a alone, a and B together, and B alone. For the association relation of more than three association objects described by the "and/or", it means that any one of the three association objects may exist alone or any at least two of the three association objects exist simultaneously, for example, for a, and/or B, and/or C, any one of the A, B, C items may exist alone or any two of the A, B, C items exist simultaneously or three of the three items exist simultaneously. Herein, "at least one" means one or more, and "a plurality" means two or more. "at least one", "at least one" or the like refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one (individual) of a, b, or c," or "at least one (individual) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple, respectively.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The temperature monitoring method of the continuous anode for aluminum electrolysis is characterized by comprising the following steps of:
providing a continuous anode electrolytic cell, and adding anode paste into an anode frame of the continuous anode electrolytic cell;
setting a plurality of detection surfaces in the anode paste, setting a temperature detection device on each detection surface, and establishing a spatial distribution model of the temperature detection device;
continuous anode roasting production is carried out, and the real-time temperature of each temperature detection device is obtained through the temperature detection devices;
establishing a plurality of isothermal surfaces through the real-time temperature and the spatial distribution model, and establishing a temperature distribution model of the continuous anode through the isothermal surfaces;
establishing a temperature threshold model according to the technological requirements of continuous anode roasting;
substituting the information in the temperature distribution model into the temperature threshold model, and judging whether the roasting temperature is too high.
2. The method for monitoring the temperature of an aluminum electrolysis continuous anode according to claim 1, further comprising the steps of:
and when the roasting temperature is judged to be too high, early warning is carried out.
3. The method for monitoring the temperature of an aluminum electrolysis continuous anode according to claim 1, wherein the temperature distribution model of the continuous anode is established through the isothermal surface, comprising the following steps:
calculating a temperature gradient between each isothermal surface and an adjacent isothermal surface through the real-time temperature;
and establishing a temperature distribution model of the continuous anode through the temperature gradient.
4. The method for monitoring the temperature of an aluminum electrolysis continuous anode according to claim 1, wherein the distances between adjacent detection surfaces are equal.
5. The method for monitoring the temperature of an aluminum electrolysis continuous anode according to claim 1, wherein the detection surface is perpendicular to the height direction of the anode frame and distributed along the height direction.
6. A temperature monitoring system for an aluminum electrolysis continuous anode, the temperature monitoring system comprising:
the temperature detection device is used for detecting temperature and generating a signal according to a detection result;
the data acquisition module is in communication connection with the temperature detection device and is used for processing signals generated by the temperature detection device and generating data;
the data processing module is in communication connection with the data acquisition module and is used for processing data generated by the data acquisition device through a data model and feeding back a processing result.
7. The system for monitoring the temperature of an aluminum electrolysis continuous anode according to claim 6, further comprising:
and the early warning module is in communication connection with the data processing module and is used for carrying out early warning according to the feedback result of the data processing module.
8. The system for monitoring the temperature of an aluminum electrolysis continuous anode according to claim 7, further comprising:
and the man-machine interaction module is in communication connection with the data processing module and is used for displaying the condition of the data processing module for processing the data in real time.
9. The system for monitoring the temperature of the continuous anode for aluminum electrolysis according to claim 8, wherein the man-machine interaction module is further in communication connection with the early warning module, and the man-machine interaction module is further used for manually starting the early warning module to perform early warning.
10. The system for monitoring the temperature of an aluminum electrolysis continuous anode according to claim 6, further comprising:
the data storage module is in communication connection with the data processing module and is used for recording the data processing process of the data processing module.
CN202310789303.5A 2023-06-30 2023-06-30 Temperature monitoring method and system for continuous anode of aluminum electrolysis Pending CN116815253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310789303.5A CN116815253A (en) 2023-06-30 2023-06-30 Temperature monitoring method and system for continuous anode of aluminum electrolysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310789303.5A CN116815253A (en) 2023-06-30 2023-06-30 Temperature monitoring method and system for continuous anode of aluminum electrolysis

Publications (1)

Publication Number Publication Date
CN116815253A true CN116815253A (en) 2023-09-29

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Application Number Title Priority Date Filing Date
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Country Status (1)

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