CN112663093B - Automatic cathode lifting device and control method - Google Patents
Automatic cathode lifting device and control method Download PDFInfo
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- CN112663093B CN112663093B CN202011583099.4A CN202011583099A CN112663093B CN 112663093 B CN112663093 B CN 112663093B CN 202011583099 A CN202011583099 A CN 202011583099A CN 112663093 B CN112663093 B CN 112663093B
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- controlling
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- 239000003792 electrolyte Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 238000003723 Smelting Methods 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 34
- 229910052742 iron Inorganic materials 0.000 description 17
- 229910052761 rare earth metal Inorganic materials 0.000 description 15
- 150000002910 rare earth metals Chemical class 0.000 description 14
- 229910052692 Dysprosium Inorganic materials 0.000 description 8
- 229910000640 Fe alloy Inorganic materials 0.000 description 8
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- RDTHZIGZLQSTAG-UHFFFAOYSA-N dysprosium iron Chemical compound [Fe].[Dy] RDTHZIGZLQSTAG-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- ZEDOTOFVVAECOD-UHFFFAOYSA-L [Li+].[F-].[F-].[Dy+3] Chemical compound [Li+].[F-].[F-].[Dy+3] ZEDOTOFVVAECOD-UHFFFAOYSA-L 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003440 dysprosium oxide Inorganic materials 0.000 description 1
- NLQFUUYNQFMIJW-UHFFFAOYSA-N dysprosium(iii) oxide Chemical compound O=[Dy]O[Dy]=O NLQFUUYNQFMIJW-UHFFFAOYSA-N 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- ZSOJHTHUCUGDHS-UHFFFAOYSA-N gadolinium iron Chemical compound [Fe].[Gd] ZSOJHTHUCUGDHS-UHFFFAOYSA-N 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- NOYZXJGXUNSQQU-UHFFFAOYSA-N holmium iron Chemical compound [Fe].[Fe].[Fe].[Fe].[Fe].[Fe].[Fe].[Fe].[Fe].[Ho] NOYZXJGXUNSQQU-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- JSUSQWYDLONJAX-UHFFFAOYSA-N iron terbium Chemical compound [Fe].[Tb] JSUSQWYDLONJAX-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Inorganic materials [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Electrolytic Production Of Metals (AREA)
Abstract
The invention provides an automatic cathode lifting device and a control method, and relates to the technical field of metal electrolysis; the invention comprises an electric control system and a spiral lifter; the spiral lifter is fixedly connected with the cathode and controls the lifting distance of the cathode; the electric control system comprises an ammeter, a power supply and a controller for controlling the spiral elevator according to the magnitude of the ammeter and the electrolysis time, wherein the controller is connected with the anode and the cathode of the power supply, the cathode and the anode are connected with the power supply to form a closed loop, the ammeter is connected in series on the closed loop, and the controller is electrically connected with the ammeter; the invention aims at the problem of maintaining the cathode depth at a quite level and keeping the current density in a good process environment, and aims at stabilizing the alloy component proportion, reducing the unqualified production and saving the unnecessary production cost caused by secondary smelting of unqualified products.
Description
Technical Field
The invention relates to the technical field of metal electrolysis, in particular to an automatic cathode lifting device and a control method.
Background
The heavy rare earth elements such as Dy, gd, tb and the like are indispensable additive elements for improving the coercive force of the Nd-Fe-B magnet, and can effectively solve the problems of poor thermal stability and low Curie temperature of the Nd-Fe-B magnet. The preparation of single heavy rare earth metals usually adopts a vacuum reduction method, and the used equipment and materials are expensive, so the cost is extremely high. Practical production tests show that the effect of adding the heavy rare earth iron alloy is basically the same as that of adding a single heavy rare earth metal, and the heavy rare earth iron alloy can be prepared at a lower temperature by a simple molten salt electrolysis method, so that the cost is lower.
Heavy rare earth metals such as Dy, gd, tb and the like are prepared by adopting an oxide molten salt electrolysis method, namely, rare earth oxide metals are electrolyzed in rare earth fluoride-lithium fluoride molten salt. The iron is prepared by a smelting and infiltration method, namely, an electrolytic cathode is prepared by pure iron, and when the electrolyzed heavy rare earth metal is obtained on the cathode, the pure iron and the heavy rare earth metal are infiltrated into a heavy rare earth metal-iron alloy. The iron cathode itself does not participate in the electrolytic reaction but is continuously consumed itself.
During the electrolysis process, the cathode iron rod is slowly consumed along with the electrolysis process. The relative position of the anode and the cathode changes along with the consumption of the iron cathode, so that molten salt electrolysis reaction in the tank changes, the yield of the heavy rare earth metal-iron alloy is reduced, the heavy rare earth metal and iron components in the heavy rare earth metal-iron alloy are changed, and finally, the uniformity of the product is poor. The traditional method adopts manual timing control of cathode downward movement, and although the method solves the problem of cathode movement, a plurality of defects exist in the electrolysis process: the relative position of the cathode is difficult to determine; inaccurate time control; the alloy proportion has larger difference; in order to solve the problem that the relative position of the cathode is difficult to determine, patent CN2654621 discloses an automatic cathode lifting device for producing rare earth alloy by molten salt electrolysis, which simply controls the cathode descending distance by utilizing the current change condition, and can cause the change of the electrolyte liquid level due to the factors of normal consumption of an electrode, the supplement of electrolyte in the metal discharging and electrolysis processes, thereby influencing the current change and causing abnormal electrolytic production.
Content of the application
The invention aims to provide an automatic cathode lifting device and a control method, which aim at solving the problem of maintaining the depth of a cathode at a quite level and the current density under a good process environment, and achieve the purposes of reducing the duty ratio of unqualified heavy rare earth metal-ferroalloy production and saving unnecessary production cost caused by secondary smelting of unqualified products.
The embodiment of the invention is realized by the following technical scheme: an automatic cathode lifting device is connected with a cathode and an anode which are arranged in an electrolytic tank and comprises an electric control system and a spiral lifter; wherein: the spiral lifter is fixedly connected with the cathode and controls the lifting distance of the cathode; the electric control system comprises an ammeter, a power supply and a controller for controlling the spiral elevator according to the magnitude of the ammeter and the electrolysis time, wherein the controller is connected with the anode and the cathode of the power supply, the cathode and the anode are connected with the power supply to form a closed loop, the ammeter is connected in series on the closed loop, and the controller is electrically connected with the ammeter.
Further, the screw lifter comprises a connecting rod, a screw rod, a support for supporting the screw rod and a motor for driving the screw rod, wherein the screw rod is vertically arranged; a speed reducer is arranged between the screw rod and the motor, and the motor is movably connected with the screw rod through the speed reducer; the support is internally provided with a chute, one end of the connecting rod is movably connected with the screw thread of the screw rod, one end of the connecting rod is arranged in the chute, and the other end of the connecting rod is fixedly connected with the cathode.
Further, an output end of the controller is electrically connected with an electric energy input end of the motor.
Further, a bearing is arranged at the supporting point of the screw rod and the support.
Further, the power supply is connected with the cathode and the anode through flexible wires.
A control method for controlling the cathode lifting stroke is applied to the automatic cathode lifting device, and comprises the following steps:
s1: a mounting device for pouring electrolyte into the electrolytic cell;
s2: after the step S1 is completed, a power supply is started, a closed loop is electrified, and an ammeter acquires current in the closed loop;
s3: the current meter transmits the acquired current information to the controller while S2 is carried out, the controller analyzes the current information and the time for maintaining the state of the current information according to a preset program, and then controls the rotating speed and the steering of the motor according to the current information and the corresponding time, so as to achieve the purpose of controlling the cathode lifting speed and the cathode lifting time;
s4: s2 and S3 are repeated until the electrolysis is completed.
The technical scheme of the embodiment of the invention has at least the following advantages and beneficial effects:
1. according to the invention, through automatic control of the iron cathode, the cathode slowly rises and falls along with the electrolysis process in the electrolysis process, so that the uniformity of the product is enhanced, meanwhile, unqualified products are reduced, and unnecessary production cost caused by secondary smelting of unqualified products is saved;
2. the invention considers the fluctuation of current caused by factors such as normal consumption of the electrode, supplement of electrolyte in the metal discharging and electrolysis process, and controls the cathode to rise or fall according to the comparison of the value of the current fluctuation and the relative value of a preset current value; controlling the cathode lifting speed according to the absolute value of the difference between the actual current value and the preset value; controlling the cathode lifting time according to the time when the actual current is at a certain value; therefore, the cathode depth is maintained at a quite level, the current density is kept under a good process environment, the productivity is maximized on the basis of qualified products, and the method has a great promotion effect on achieving the aims of reducing the cost and enhancing the efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a controller control scheme;
icon: 1-a power supply; 2-flexible wires; 3-a controller; 4-ammeter; 5-an electric motor; 6-a speed reducer; 7-a bracket; 8-connecting rods; 9-cathode; 10-anode; 11-electrolyte; 12-an electrolytic cell; 13-screw rod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
An automatic cathode lifting device is connected with a cathode 9 and an anode 10 which are arranged in an electrolytic tank 12, in the embodiment, an iron rod is used as the cathode 9, a graphite rod is used as the anode 10, dysprosium metal is prepared by inserting dysprosium oxide into dysprosium fluoride-lithium fluoride molten salt for electrolysis, and dysprosium metal and pure iron (namely, the iron rod) are infiltrated into dysprosium-iron alloy; comprises an electric control system and a spiral lifter; the spiral lifter is fixedly connected with the cathode 9 and controls the lifting distance of the cathode 9; the electric control system comprises an ammeter 4, a power supply 1 and a controller 3 for controlling the spiral elevator according to the current magnitude and the electrolysis time, wherein the controller 3 is connected with the anode and the cathode of the power supply 1, and the controller 3 obtains electric energy from the power supply 1 to ensure stable operation; the cathode 9 and the anode 10 are connected with the power supply 1 to form a closed loop, and the closed loop ensures that the electrolysis operation is normally carried out; the ammeter 4 is connected in series on the closed loop, the controller 3 is electrically connected with the ammeter 4, the controller 3 obtains current data and current value duration data from the ammeter 4, and the screw lifter is controlled by the cooperation of the two data.
In the present embodiment, the controller 3 employs a PLC controller 3.
In this embodiment, the screw lifter includes a link 8, a screw 13, a support 7 supporting the screw 13, and a motor 5 driving the screw 13, the screw 13 being vertically installed; a speed reducer 6 is arranged between the screw rod 13 and the motor 5, a driving bevel gear is arranged on an output shaft of the motor 5, a driving gear is arranged at one end of the speed reducer 6, a driven gear is arranged at the other end of the speed reducer 6, a driven bevel gear is arranged at one end of the screw rod 13, and the motor 5 is movably connected with the screw rod 13 through the speed reducer 6; the support 7 is internally provided with a chute, the chute ensures that the connecting rod 8 can not rotate along with the screw rod 13 and can only do linear motion along the chute, one end of the connecting rod 8 is movably connected with the screw rod 13 through threads, one end of the connecting rod 8 is arranged in the chute, and the other end of the connecting rod 8 is fixedly connected with the cathode 9.
In this embodiment, the output of the controller 3 is electrically connected to the electrical power input of the motor 5.
In this embodiment, the motor 5 is a three-phase asynchronous motor.
In this embodiment, the motor 5 is operated to move up and down with the cathode 9 as follows:
the motor 5 obtains the instruction and the electric energy output by the controller 3, the motor 5 rotates, so that the driving bevel gear drives the driving gear of the speed reducer 6 to rotate, the driving gear of the speed reducer 6 drives the driven gear of the speed reducer 6 to rotate, the driven gear of the speed reducer 6 is meshed with the driven bevel gear of the screw rod 13 to transmit a motion mode, the screw rod 13 rotates, the connecting rod 8 is movably connected with the screw rod 13 through threads, and the connecting rod 8 realizes the up-and-down motion of the connecting rod 8 under the constraint of the sliding groove, so that the cathode 9 is driven to move up and down.
In this embodiment, in order to ensure that the screw 13 can rotate stably, a bearing is disposed at the supporting point of the screw 13 and the support 7.
In this embodiment, the cathode 9 is connected to the negative electrode of the power source 1 through the flexible wire 2; the anode 10 is connected with the positive electrode of the power supply 1 through a flexible electric wire 2.
In this embodiment, the flexible wire 2 is a annealed copper wire, which has a conductive effect and can avoid interference with the lifting of the iron cathode 9.
A control method for controlling the cathode lifting stroke is applied to the automatic cathode 9 lifting device, and comprises the following steps:
s1: a mounting device for pouring the electrolyte 11 into the electrolytic bath 12; setting a program and a preset current value, and preparing in advance;
s2: after the step S1 is completed, a power supply 1 is started, a closed loop is electrified, and an ammeter 4 acquires current in the closed loop;
s3: at the same time as S2, the ammeter 4 transmits the acquired current information to the controller 3, and the controller 3 analyzes the current information and the time for maintaining the state of the current information according to a preset program, wherein:
if the current does not fluctuate, the controller 3 controls the motor 5 to rotate at a constant speed according to a set value, so that the cathode 9 descends at a constant speed;
if the current fluctuates:
s31: if the actual current fluctuates, the controller 3 compares the value (actual value) of the current fluctuation with the relative magnitude of a preset current value (preset value), when the actual value is larger than the preset value, the controller 3 controls the motor 5 to rotate forward to enable the cathode 9 to rise, so that the depth of the cathode 9 is reduced, and the trend of reducing the actual value back to the preset value is formed; when the actual value is smaller than the preset value, the controller 3 controls the motor 5 to rotate reversely, so that the cathode 9 is lowered, and the depth of the cathode 9 is increased, so that the actual value is increased to the preset value;
s32: if the actual current fluctuates, controlling the lifting speed of the cathode 9 according to the absolute value of the difference value between the actual value and the preset value; the greater the absolute value, the higher the speed; conversely, the smaller the absolute value, the lower the speed;
s33: if the actual current fluctuates, controlling the lifting time of the cathode 9 according to the time when the actual current is at a certain value;
it should be noted that S31, S32, and S33 are not a progressive relationship, but a parallel relationship, and have a concurrent characteristic; the iron cathode 9 can be kept at a proper electrolysis depth through S31, S32 and S33, and the electrolysis reaction is carried out in a relatively stable current environment, so that the dysprosium and iron ratio is maintained in a stable ratio range.
S4: s2 and S3 are repeated until the electrolysis is completed.
The following "()" is a unit or symbol;
the following model components were used to continuously produce the 10 Dy-Fe alloy in this example and in the conventional manner: the electrolytic tank 12 adopts 6000 (A); 4000 (A) is adopted as electrolysis current; dysprosium has an electrochemical equivalent of k= 2.021144 (g/a/h); dysprosium production 4000 x 2.021144/3600=2.25 (g/s) per unit time at this current; setting the proportion of dysprosium and iron to be 80:20, consuming 2.25/0.8 x 0.2=0.5625 (g/s) of cathode 9 in unit time, and setting the descending speed of cathode 9 to be 0.018 (mm/s) at 4000 (A); the dysprosium/iron fraction comparisons for the continuous production of 10-furnace dysprosium-iron alloys in this example and conventional manner, respectively, are shown below:
according to the table, the use of this example can maintain the dysprosium and iron ratios within a stable ratio range.
Likewise, the present embodiment is applied to the manufacture of gadolinium iron (GdFe), terbium iron (TbFe), holmium iron (HoFe), and the like, which are prepared by the self-consuming cathode 9.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The control method for controlling the cathode lifting stroke is realized by adopting a cathode automatic lifting device and is characterized in that:
the automatic cathode lifting device is connected with a cathode (9) and an anode (10) which are arranged in the electrolytic tank (12) and comprises an electric control system and a spiral lifter; wherein: the spiral lifter is fixedly connected with the cathode (9) and controls the lifting distance of the cathode (9); the electric control system comprises an ammeter (4), a power supply (1) and a controller (3) for controlling the spiral elevator according to the magnitude of the ammeter and the electrolysis time, wherein the controller (3) is connected with the anode and the cathode of the power supply (1), the cathode (9) and the anode (10) are connected with the power supply (1) to form a closed loop, the ammeter (4) is connected in series on the closed loop, and the controller (3) is electrically connected with the ammeter (4);
the control method comprises the following steps:
s1: installing a cathode automatic lifting device, and pouring electrolyte (11) into the electrolytic tank (12);
s2: after the step S1 is completed, a power supply (1) is started, a closed loop is electrified, and an ammeter (4) acquires current in the closed loop;
s3: the current meter (4) transmits the acquired current information to the controller (3) while S2 is carried out, the controller (3) analyzes the current information and the time for maintaining the state of the current information according to a preset program, and then controls the rotating speed and the rotating direction of the motor (5) according to the current information and the corresponding time so as to achieve the purpose of controlling the lifting speed and the lifting time of the cathode (9);
if the current does not fluctuate, the controller (3) controls the motor (5) to rotate at a constant speed according to the setting, so that the cathode (9) descends at a constant speed;
if the actual current fluctuates, the controller (3) compares the actual value of the current fluctuation with the relative value of the preset value, when the actual value is larger than the preset value, the controller (3) controls the motor (5) to rotate positively to enable the cathode (9) to rise, so that the depth of the cathode (9) is reduced, and a trend of reducing the actual value back to the preset value is formed; when the actual value is smaller than the preset value, the controller (3) controls the motor (5) to rotate reversely, so that the cathode (9) is lowered, the depth of the cathode (9) is increased, and the trend of raising the actual value back to the preset value is formed;
if the actual current fluctuates, controlling the lifting speed of the cathode (9) according to the absolute value of the difference value between the actual value and the preset value; the greater the absolute value, the higher the speed; the smaller the absolute value, the lower the velocity;
if the actual current fluctuates, controlling the lifting time of the cathode (9) according to the time when the actual current reaches a preset value;
s4: s2 and S3 are repeated until the electrolysis is completed.
2. The control method for controlling the cathode lifting stroke according to claim 1, wherein: the screw lifter comprises a connecting rod (8), a screw rod (13), a support (7) for supporting the screw rod (13) and a motor (5) for driving the screw rod (13), wherein the screw rod (13) is vertically arranged; a speed reducer (6) is arranged between the screw rod (13) and the motor (5), and the motor (5) is movably connected with the screw rod (13) through the speed reducer (6); the support (7) is internally provided with a chute, one end of the connecting rod (8) is movably connected with the screw rod (13) through threads, one end of the connecting rod (8) is arranged in the chute, and the other end of the connecting rod (8) is fixedly connected with the cathode (9).
3. The control method for controlling the cathode lifting stroke according to claim 2, wherein: the output end of the controller (3) is electrically connected with the electric energy input end of the motor (5).
4. The control method for controlling the cathode lifting stroke according to claim 2, wherein: and a bearing is arranged at the supporting point of the screw rod (13) and the support (7).
5. The control method for controlling the cathode lifting stroke according to claim 1, wherein: the power supply (1) is connected with the cathode (9) and the anode (10) through flexible wires (2).
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0748688A (en) * | 1994-07-26 | 1995-02-21 | Sumitomo Light Metal Ind Ltd | Neodymium-iron alloy producing device |
| 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 |
| CN205616967U (en) * | 2016-05-11 | 2016-10-05 | 赣州三友稀土新材料有限公司 | Automatic lifting adjusting device of earth metal electrolytic stove negative pole |
| CN214327921U (en) * | 2020-12-28 | 2021-10-01 | 乐山有研稀土新材料有限公司 | Automatic cathode lifting device |
-
2020
- 2020-12-28 CN CN202011583099.4A patent/CN112663093B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0748688A (en) * | 1994-07-26 | 1995-02-21 | Sumitomo Light Metal Ind Ltd | Neodymium-iron alloy producing device |
| 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 |
| CN205616967U (en) * | 2016-05-11 | 2016-10-05 | 赣州三友稀土新材料有限公司 | Automatic lifting adjusting device of earth metal electrolytic stove negative pole |
| CN214327921U (en) * | 2020-12-28 | 2021-10-01 | 乐山有研稀土新材料有限公司 | Automatic cathode lifting device |
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| CN112663093A (en) | 2021-04-16 |
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