CN118127573A - Rare earth electrolysis three-cathode anode effect forecasting device and method - Google Patents
Rare earth electrolysis three-cathode anode effect forecasting device and method Download PDFInfo
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- CN118127573A CN118127573A CN202410550987.8A CN202410550987A CN118127573A CN 118127573 A CN118127573 A CN 118127573A CN 202410550987 A CN202410550987 A CN 202410550987A CN 118127573 A CN118127573 A CN 118127573A
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- 230000000694 effects Effects 0.000 title claims abstract description 55
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 38
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 37
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005070 sampling Methods 0.000 claims description 11
- 238000009499 grossing Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 2
- 101100314150 Caenorhabditis elegans tank-1 gene Proteins 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- -1 oxygen ions Chemical class 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a device and a method for forecasting a three-cathode anode effect of rare earth electrolysis, which relate to the field of rare earth electrolysis, wherein the device comprises a cathode current transformer and a data acquisition analyzer; the cathode current transformer is connected with the cathode of the electrolytic tank; the cathode current transformer is used for detecting the cathode current of the cathode; the cathode current transformer is connected with the data acquisition analyzer; the data acquisition analyzer is used for forecasting the anode effect according to the cathode current. The invention can realize the forecast of the three-cathode anode effect of rare earth electrolysis.
Description
Technical Field
The invention relates to the field of rare earth electrolysis, in particular to a device and a method for forecasting a three-cathode anode effect of rare earth electrolysis.
Background
The anode effect is a special phenomenon in the rare earth electrolysis production process. When the anode effect occurs on the anode, the voltage and cathode current density of such anode may rise sharply in a short time, which may reduce the rare earth cell current efficiency, and may shorten the life of the cell. In addition, the anode effect can produce harmful fluorocarbon gases, with the global capacity of CF 4 being 11100 times that of CO 2. Therefore, it is important to use the anode effect prediction device to reduce the number of times of generating the anode effect and reduce the time of generating the anode effect. At present, the research on the method for forecasting the anode effect in the electrolytic field is concentrated on the field of electrolytic aluminum, and the aspect of forecasting the anode effect in the rare earth electrolytic field is relatively blank.
Disclosure of Invention
The invention aims to provide a device and a method for forecasting the three-cathode anode effect of rare earth electrolysis, which can realize the forecasting of the three-cathode anode effect of rare earth electrolysis.
In order to achieve the above object, the present invention provides the following solutions:
a rare earth electrolysis tricathode anode effect forecasting device, comprising: a cathode current transformer and a data acquisition analyzer;
the cathode current transformer is connected with the cathode of the electrolytic tank; the cathode current transformer is used for detecting the cathode current of the cathode; the cathode current transformer is connected with the data acquisition analyzer; the data acquisition analyzer is used for forecasting the anode effect according to the cathode current.
Optionally, the cathode current transformer is a rectangular hall sensor.
Optionally, the range of the rectangular hall sensor is:
Wherein: i e is the rated current and I c is the single cathode operating current.
Optionally, the number of the cathode current transformers is three.
Optionally, the system also comprises a display alarm;
The display alarm is connected with the data acquisition analyzer; the display alarm is used for alarming when the anode effect occurs.
Optionally, the data acquisition analyzer is a digital signal processing DSP chip, and the sampling period is less than 0.01s.
The invention also provides a method for forecasting the three-cathode anode effect of the rare earth electrolysis, which is applied to the device for forecasting the three-cathode anode effect of the rare earth electrolysis, and comprises the following steps:
acquiring a cathode current detected by a cathode current transformer;
selecting a maximum value and a minimum value within a capture period of the cathode current;
judging whether the difference between the maximum value and the minimum value is larger than or equal to a set current threshold value or not, and obtaining a first judgment result;
If the first judgment result is yes, judging whether the first judgment results are all yes in the set cycle number or not, and obtaining a second judgment result;
If the second judgment result is yes, determining that an anode effect occurs;
if the second judgment result is negative, returning to the step of acquiring the cathode current detected by the cathode current transformer;
if the first judgment result is negative, returning to the step of acquiring the cathode current detected by the cathode current transformer.
Optionally, after acquiring the cathode current detected by the cathode current transformer, the method further comprises:
and carrying out data smoothing processing on the cathode current in the sampling period.
Optionally, the expression of the data smoothing process is:
Where I p1 is the smoothed value of the cathode current, The cathode current is detected by a cathode current transformer, and n is a sampling value.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
According to the rare earth electrolysis three-cathode anode effect forecasting device provided by the invention, the cathode current is analyzed through the cathode current transformer and the data acquisition analyzer, so that the forecasting of the anode effect is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram of a rare earth electrolysis three-cathode anode effect forecasting device provided by the invention;
FIG. 2 is a schematic diagram of the cathode current collected by the present invention.
Symbol description:
The device comprises an electrolytic tank-1, a cathode-2, a rectangular Hall sensor-3, a data acquisition analyzer-4, a display alarm-5 and an anode-6.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a device and a method for forecasting the three-cathode anode effect of rare earth electrolysis, which can realize the forecasting of the three-cathode anode effect of rare earth electrolysis.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, the invention provides a rare earth electrolysis three-cathode anode effect forecasting device, which comprises: a cathode current sensor and a data collection analyzer 4; the cathode current sensor is connected with the cathode 2 of the electrolytic tank 1; the cathode current sensor is used for detecting the cathode current of the cathode 2; the cathode current sensor is connected with the data acquisition analyzer 4; the data acquisition analyzer 4 is used for forecasting the anode effect according to the cathode current.
The number of the cathode current sensors is three. The cathode current sensor is a rectangular Hall sensor 3. The device provided by the invention is matched with a three-cathode electrolytic tank for use. The cathode current sensor adopts a large-current rectangular Hall sensor. The measuring range of the rectangular Hall sensor 3 is as follows:
wherein: i e is the rated current and I c is the single cathode 2 operating current.
The rare earth electrolysis three-cathode anode effect forecasting device also comprises a display alarm 5; the display alarm 5 is connected with the data acquisition analyzer 4; the display alarm 5 is used for alarming when the anode effect occurs.
The data acquisition analyzer 4 is a digital signal processing DSP chip, and the sampling period is less than 0.01s.
In the rare earth electrolysis process, current flows into the anode 6 from the cathode 2, and the corresponding cathode current changes after the anode effect occurs. Since the anode 6 is connected in such a way that the anode current cannot be measured directly, the current is measured at the cathode.
Specifically, the rare earth electrolysis three-cathode anode effect forecasting device provided by the invention is used for rare earth molten salt of a rare earth oxyfluoride system.
The invention also provides a method for forecasting the three-cathode anode effect of the rare earth electrolysis, which is applied to a device for forecasting the three-cathode anode effect of the rare earth electrolysis, and comprises the following steps:
and acquiring the cathode current detected by the cathode current transformer. The collected cathode current is shown in fig. 2.
The maximum and minimum values within the capture period of the cathode current are selected.
And judging whether the difference between the maximum value and the minimum value is larger than or equal to a set current threshold value, and obtaining a first judging result.
If the first judgment result is yes, judging whether the first judgment results are all yes within the set cycle number, and obtaining a second judgment result.
And if the second judgment result is yes, determining that the anode effect occurs.
If the second judgment result is negative, returning to the step of acquiring the cathode current detected by the cathode current transformer.
If the first judgment result is negative, returning to the step of acquiring the cathode current detected by the cathode current transformer.
As an alternative embodiment, after acquiring the cathode current detected by the cathode current transformer, the method further comprises: and carrying out data smoothing processing on the cathode current in the sampling period. And preprocessing the sampled data, smoothing the data under the condition that the sampling period is T 1, and removing abnormal needle shock in the signal.
As an alternative embodiment, the expression of the data smoothing process is:
Where I p1 is the smoothed value of the cathode current, The cathode current is detected by a cathode current transformer, and n is a sampling value.
The maximum value I pmax and the minimum value I pmin in { I p1,Ip2,Ip3,…,Ipn } are found in the capturing period T 2, and the difference is calculated, if I pmax-Ipmin is not less than 100A, and five periods and more occur continuously, which indicates that the anode effect occurs.
In the rare earth electrolysis production, when the anode effect occurs, as the electrolysis process is carried out, oxygen ions in the electrolyte gradually decrease to a certain degree, fluorine is separated out and reacts with anode carbon to generate carbon fluoride, and the carbon fluoride separates out fine carbon particles when decomposing, and the carbon particles are attached to the surface of the anode, so that the electrolyte is prevented from being contacted with the anode, the electrolyte cannot wet the anode well, a layer of air film with poor electric conduction is formed between the electrolyte and the anode just like the surface of the oil coated cannot be wetted by water, and the anode overvoltage is increased, so that the anode effect is caused. Will be reflected in the short-term fluctuations of the 3 cathode currents. The cathode current is detected by a cathode transformer, the current real-time change of one sampling period is acquired, the characteristic waveform is acquired, and the interference factors of artificial stirring furnaces are eliminated, so that the anode effect is generated at the positions of No. 1, no. 2 and No. 3. Under the prompt of a display alarm, the combination position relation of the graphite anode and the cathode is adjusted in time, or the current is adjusted, or a proper amount of oxide is added, so that a plurality of disadvantages of the anode effect on electrolytic production are eliminated.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (9)
1. A rare earth electrolysis tricathode anode effect forecasting device, characterized by comprising: a cathode current transformer and a data acquisition analyzer;
the cathode current transformer is connected with the cathode of the electrolytic tank; the cathode current transformer is used for detecting the cathode current of the cathode; the cathode current transformer is connected with the data acquisition analyzer; the data acquisition analyzer is used for forecasting the anode effect according to the cathode current.
2. The rare earth electrolysis tricathode anode effect forecasting device of claim 1, wherein the cathode current transformer is a rectangular hall sensor.
3. The rare earth electrolysis tricathode anode effect forecasting device of claim 2, wherein the range of the rectangular hall sensor is:
Wherein: i e is the rated current and I c is the single cathode operating current.
4. The rare earth electrolysis tricathode anode effect forecasting apparatus of claim 1, wherein the number of the cathode current transformers is three.
5. The rare earth electrolysis tricathode anode effect forecasting device of claim 1, further comprising a display alarm;
The display alarm is connected with the data acquisition analyzer; the display alarm is used for alarming when the anode effect occurs.
6. The rare earth electrolysis tricathode anode effect forecasting device according to claim 1, wherein the data acquisition analyzer is a digital signal processing DSP chip, and the sampling period is less than 0.01s.
7. A method for predicting the effect of a three-cathode anode in rare earth electrolysis, which is characterized in that the method is applied to the device for predicting the effect of the three-cathode anode in rare earth electrolysis according to any one of claims 1 to 6, and comprises the following steps:
acquiring a cathode current detected by a cathode current transformer;
selecting a maximum value and a minimum value within a capture period of the cathode current;
judging whether the difference between the maximum value and the minimum value is larger than or equal to a set current threshold value or not, and obtaining a first judgment result;
If the first judgment result is yes, judging whether the first judgment results are all yes in the set cycle number or not, and obtaining a second judgment result;
If the second judgment result is yes, determining that an anode effect occurs;
if the second judgment result is negative, returning to the step of acquiring the cathode current detected by the cathode current transformer;
if the first judgment result is negative, returning to the step of acquiring the cathode current detected by the cathode current transformer.
8. The method for predicting the three-cathode-anode effect of rare earth electrolysis according to claim 7, further comprising, after obtaining the cathode current detected by the cathode current transformer:
and carrying out data smoothing processing on the cathode current in the sampling period.
9. The method for predicting the three-cathode-anode effect of rare earth electrolysis according to claim 8, wherein the expression of the data smoothing process is:
Where I p1 is the smoothed value of the cathode current, The cathode current is detected by a cathode current transformer, and n is a sampling value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410550987.8A CN118127573A (en) | 2024-05-07 | 2024-05-07 | Rare earth electrolysis three-cathode anode effect forecasting device and method |
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| CN202410550987.8A CN118127573A (en) | 2024-05-07 | 2024-05-07 | Rare earth electrolysis three-cathode anode effect forecasting device and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654621Y (en) * | 2003-10-28 | 2004-11-10 | 包头瑞鑫稀土金属材料股份有限公司 | Automatic cathode lifting device of fused salt electrolysis production of rare earth alloy |
| CN201809453U (en) * | 2010-06-23 | 2011-04-27 | 邢勇卫 | Online intelligent measuring device for aluminium electrolysis anode and cathode current distribution |
| CN105603460A (en) * | 2016-03-10 | 2016-05-25 | 中南大学 | Rare earth oxide feeding control method for rare earth electrolytic bath |
| CN210048861U (en) * | 2019-06-05 | 2020-02-11 | 包头瑞鑫稀土金属材料股份有限公司 | Rare earth molten salt electrolysis anode current measuring device |
| CN115453178A (en) * | 2022-08-09 | 2022-12-09 | 北京世维通光智能科技有限公司 | Aluminum electrolytic cell cathode current measuring device and method |
-
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- 2024-05-07 CN CN202410550987.8A patent/CN118127573A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654621Y (en) * | 2003-10-28 | 2004-11-10 | 包头瑞鑫稀土金属材料股份有限公司 | Automatic cathode lifting device of fused salt electrolysis production of rare earth alloy |
| CN201809453U (en) * | 2010-06-23 | 2011-04-27 | 邢勇卫 | Online intelligent measuring device for aluminium electrolysis anode and cathode current distribution |
| CN105603460A (en) * | 2016-03-10 | 2016-05-25 | 中南大学 | Rare earth oxide feeding control method for rare earth electrolytic bath |
| CN210048861U (en) * | 2019-06-05 | 2020-02-11 | 包头瑞鑫稀土金属材料股份有限公司 | Rare earth molten salt electrolysis anode current measuring device |
| CN115453178A (en) * | 2022-08-09 | 2022-12-09 | 北京世维通光智能科技有限公司 | Aluminum electrolytic cell cathode current measuring device and method |
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