CN115341246A - Method for preparing rare earth through molten salt electrolysis with gradually-changed polar distance - Google Patents
Method for preparing rare earth through molten salt electrolysis with gradually-changed polar distance Download PDFInfo
- Publication number
- CN115341246A CN115341246A CN202210924452.3A CN202210924452A CN115341246A CN 115341246 A CN115341246 A CN 115341246A CN 202210924452 A CN202210924452 A CN 202210924452A CN 115341246 A CN115341246 A CN 115341246A
- Authority
- CN
- China
- Prior art keywords
- molten salt
- rare earth
- anode
- salt electrolysis
- polar distance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 147
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 79
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 69
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 26
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 7
- 239000003792 electrolyte Substances 0.000 claims description 28
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims description 12
- -1 rare earth fluoride Chemical class 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 1
- 150000001342 alkaline earth metals Chemical class 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- QCCDYNYSHILRDG-UHFFFAOYSA-K cerium(3+);trifluoride Chemical compound [F-].[F-].[F-].[Ce+3] QCCDYNYSHILRDG-UHFFFAOYSA-K 0.000 description 4
- ATINCSYRHURBSP-UHFFFAOYSA-K neodymium(iii) chloride Chemical compound Cl[Nd](Cl)Cl ATINCSYRHURBSP-UHFFFAOYSA-K 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XRADHEAKQRNYQQ-UHFFFAOYSA-K trifluoroneodymium Chemical compound F[Nd](F)F XRADHEAKQRNYQQ-UHFFFAOYSA-K 0.000 description 2
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 1
- 229910001617 alkaline earth metal chloride Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/34—Electrolytic production, recovery or refining of metals by electrolysis of melts of metals not provided for in groups C25C3/02 - C25C3/32
Landscapes
- 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
A method for preparing rare earth by gradient polar distance molten salt electrolysis belongs to the field of rare earth molten salt electrolysis. In the method, an upward-inserted anode is inserted into the inner edge of a cell shell in an inclined angle in a rare earth molten salt electrolytic cell, an upward-inserted cathode is vertically inserted into the center of the electrolytic cell, and the electrolytic cell is filled with molten salt consisting of fluoride or/and chloride. The rare earth molten salt electrolysis method with the gradually changed polar distance is formed by obliquely inserting the anode into the electrolytic cell from the molten salt liquid level to the inside of the molten salt, wherein the polar distance between the anode and the cathode is gradually reduced, and is different from the conventional electrolysis method with uniform and equal polar distance. By adjusting the electric field distribution, the current distribution in the fused salt is increased, the surface current of the fused salt is weakened, the chemical reaction at the three-phase interface is weakened, the service life of the anode can be prolonged, and the electrolysis current efficiency can be improved.
Description
Technical Field
The invention belongs to the field of rare earth molten salt electrolysis, and particularly relates to a method for preparing rare earth through gradient polar distance molten salt electrolysis.
Background
In recent years, with the widespread use of rare earths, the demand for rare earths has increased year by year, and therefore, the yield of rare earths is required to be gradually increased. However, the production process of rare earth metals is energy intensive. The rare earth metal is mainly produced by a molten salt electrolysis method, an open molten salt electrolytic cell is utilized, a cathode is inserted into the middle of the electrolytic cell, an anode is inserted into the periphery of the electrolytic cell, and the current efficiency is generally between 60 and 75 percent. In addition, in the traditional rare earth electrolysis method, the cathode and the anode are electrolyzed at equal distance, namely, the polar distances are equal; this results in a faster consumption of the anode at the surface of the molten salt, resulting in a higher anode scrap rate.
In the existing method for preparing rare earth by fused salt electrolysis, an upper-inserted rare earth fused salt electrolytic cell with equal polar distance is adopted, and the polar distances between a cathode and an anode are equal, for example, in the rare earth electrolytic cell invented by patents CN101845641B and CN204174293U, the distances between the cathode and the anode are uniform and equal; patent CN105088284B invented an electrolytic cell with adjustable polar distance, but the polar distances were equal; there are also some polar distances with thick top and thin bottom, such as patent CN202626314U, CN 1033970350A, and CN209162215U, which invent a structure with thick upper part (anode at the three-phase interface part) and thin lower part of the anode according to the actual consumption state of the anode, i.e. the polar distance is small at the liquid level of the molten salt, and the polar distance inside the molten salt is large, and this anode structure can improve the service life of the anode, but will further reduce the current efficiency, and needs additional adjustment and preparation of the anode structure.
Disclosure of Invention
Aiming at the defects, the invention provides a method for preparing rare earth by molten salt electrolysis with gradually changed polar distance. The anode is obliquely inserted into the electrolytic bath to form a gradually-changed polar distance from the molten salt liquid surface to the inside of the molten salt, and the polar distance between the anode and the cathode is gradually reduced. The method can adjust electric field distribution, increase current distribution in the molten salt, weaken surface current of the molten salt, further weaken chemical reaction at a three-phase interface, and improve the service life of the anode and the electrolysis current efficiency.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
the invention relates to a method for preparing rare earth by gradient polar distance molten salt electrolysis, wherein in an up-inserted rare earth molten salt electrolysis bath, an anode is obliquely inserted into the inner edge of a bath shell of the rare earth molten salt electrolysis bath, a cathode is vertically inserted into the center of the rare earth molten salt electrolysis bath, and electrolyte molten salt is contained in the rare earth molten salt electrolysis bath;
the electrode distances between the cathode and the anode are unequal, the electrode distances from the molten salt liquid level to the inside of the molten salt are gradually reduced, and the electrode distance between two electrodes on the molten salt liquid level is larger than the electrode distance between two electrodes inside the molten salt.
The electrolyte molten salt is molten salt formed by heating fluoride and/or chloride, the fluoride mainly comprises rare earth fluoride and lithium fluoride, and the chloride mainly comprises rare earth chloride, alkali metal chloride and alkaline earth metal chloride, wherein when the electrolyte molten salt is completely fluoride, the mass percent of the rare earth fluoride in the electrolyte molten salt is more than or equal to 50%, and when the electrolyte molten salt is completely chloride, the mass percent of the rare earth chloride in the electrolyte molten salt is 20% -60%.
The included angle between the inclination angle of the anode and the vertical direction is 0-45 degrees, and 0 degree is not included, wherein 0 degree is vertical insertion;
the polar distance is between 5cm and 80 cm;
the current efficiency of the rare earth molten salt electrolytic cell is more than 80%, the utilization rate of the anode is improved by more than 10%, and the service life of the anode is prolonged by 10%.
Compared with the prior art, the method for preparing rare earth by molten salt electrolysis with gradually changed polar distance has the beneficial effects that:
(1) The current efficiency can be greatly improved, the current efficiency is between 80% and 95%, and the average current efficiency is more than 80%, so that the energy consumption of a unit mass product is reduced;
(2) The anode has the advantages that the service life of the anode can be prolonged, the anode residual rate is reduced, the reaction degree of a three-phase interface is reduced by obliquely inserting the anode, the consumption of the interface is reduced, and the service life of the whole anode is prolonged.
Drawings
FIG. 1 is a front view of an upward-insertion type molten salt rare earth electrolyzer used in an embodiment of the invention;
1-an anode; 2-graphite crucible; 3-rare earth molten salt electrolytic cell; 4-electrolyte molten salt; 5-a crucible for containing rare earth metal; 6-cathode.
Detailed Description
The present invention will be described in further detail with reference to examples.
In the following examples, the anode used was an upward-inserted anode, and the cathode used was an upward-inserted cathode.
Example 1
A method for preparing rare earth by gradual change of polar distance molten salt electrolysis is characterized in that a graphite crucible 2 is arranged on the inner wall of a cell shell of an upper insertion type rare earth molten salt electrolysis cell, an anode 1 is obliquely inserted into the edge inside the cell shell of the rare earth molten salt electrolysis cell 3, wherein an included angle formed between the anode 1 and the cell shell of the rare earth molten salt electrolysis cell 3 is 3 degrees, the oblique direction meets the requirement that the distance between the anode and the cathode inside molten salt is less than the distance between the anode and the cathode of the liquid level of the molten salt, a cathode 6 is vertically inserted into the center of the rare earth molten salt electrolysis cell 3, electrolyte molten salt is contained in the rare earth molten salt electrolysis cell 3, in the embodiment, the adopted electrolyte molten salt is a mixture of cerium fluoride, lithium fluoride and sodium chloride, wherein the cerium fluoride accounts for 50% of the electrolyte molten salt, and a crucible 5 containing rare earth metal is arranged under the cathode 6; the structure schematic diagram is shown in figure 1.
And electrolyzing, wherein the adopted electrolytic voltage is 9-10V, the electrolytic current is 6000A, the polar distance is 5-20cm, namely the polar distance on the surface of the fused salt is 20cm, and the polar distance at the tail end of an electrode in the fused salt is 5cm to obtain the rare earth metal. Wherein, the current efficiency of the rare earth molten salt electrolytic cell is 80 percent.
Example 2
A graphite crucible 2 is arranged on the inner wall of a shell of an upper-inserted rare earth molten salt electrolytic cell, an anode 1 is obliquely inserted into the edge inside the shell of the rare earth molten salt electrolytic cell 3, wherein an included angle formed between the anode 1 and the shell of the rare earth molten salt electrolytic cell 3 is 15 degrees, the inclination direction meets the requirement that the distance between the anode and the cathode inside the molten salt is smaller than the distance between the anode and the cathode on the surface of the molten salt, a cathode 6 is vertically inserted into the center of the rare earth molten salt electrolytic cell 3, electrolyte molten salt is contained in the rare earth molten salt electrolytic cell 3, in the embodiment, the adopted electrolyte molten salt is a mixture of neodymium chloride, sodium chloride and magnesium chloride, wherein the mass percent of the neodymium chloride in the electrolyte molten salt is 40%, and a crucible 5 containing rare earth metal is placed under the cathode 6.
And electrolyzing, wherein the adopted electrolytic voltage is 9-10V, the electrolytic current is 10000A, the polar distance is 20-30cm, namely the polar distance on the surface of the molten salt is 30cm, and the polar distance at the tail end of an electrode in the molten salt is 20cm to obtain the rare earth metal. Wherein the current efficiency of the rare earth molten salt electrolytic cell is 85 percent.
Example 3
A graphite crucible 2 is arranged on the inner wall of a cell shell of an upper-inserted rare earth molten salt electrolytic cell, an anode 1 is obliquely inserted into the edge inside the cell shell of the rare earth molten salt electrolytic cell 3, wherein an included angle formed between the anode 1 and the cell shell of the rare earth molten salt electrolytic cell 3 is 30 degrees, the inclination direction meets the requirement that the distance between the anode and the cathode inside the molten salt is smaller than the distance between the anode and the cathode on the surface of the molten salt, a cathode 6 is vertically inserted into the center of the rare earth molten salt electrolytic cell 3, electrolyte molten salt is contained in the rare earth molten salt electrolytic cell 3, in the embodiment, the adopted electrolyte molten salt is a mixture of neodymium chloride, sodium chloride and lithium fluoride, wherein the mass percent of the neodymium chloride in the electrolyte molten salt is 50%, and a crucible 5 containing rare earth metal is placed under the cathode 6.
And electrolyzing, wherein the adopted electrolytic voltage is 9-10V, the electrolytic current is 15000A, the polar distance is 25-40cm, namely the polar distance on the surface of the molten salt is 40cm, and the polar distance at the tail end of an electrode in the molten salt is 25cm, so as to obtain the rare earth metal. Wherein the current efficiency of the rare earth molten salt electrolytic cell is 90 percent.
Example 4
The utility model provides a method of gradual change polar distance fused salt electrolysis preparation tombarthite, be provided with graphite crucible 2 at last formula tombarthite fused salt electrolysis cell's of inserting cell shell inner wall, the inside edge of cell shell of tombarthite fused salt electrolysis cell 3 is inserted in the slope of positive pole 1, wherein, the contained angle that forms between the cell shell of positive pole 1 and tombarthite fused salt electrolysis cell 3 is 45, the incline direction satisfies the inside positive pole of fused salt and the distance of negative pole < the distance of fused salt surface positive pole and negative pole, negative pole 6 inserts tombarthite fused salt electrolysis cell 3 center perpendicularly, splendid attire electrolyte fused salt in the tombarthite fused salt electrolysis cell 3, in this embodiment, the electrolyte fused salt that adopts is the mixture of neodymium fluoride and lithium fluoride, wherein, the mass percent of neodymium fluoride accounts for the electrolyte fused salt is 60%, place splendid attire rare earth metal's crucible 5 under negative pole 6.
And electrolyzing, wherein the adopted electrolytic voltage is 9-10V, the electrolytic current is more than 20000A, the polar distance is 30-80cm, namely the polar distance of the surface of the molten salt is 80cm, and the polar distance of the tail end of the electrode in the molten salt is 30cm, so as to obtain the rare earth metal. Wherein the current efficiency of the rare earth molten salt electrolytic cell is 95 percent.
Example 5
The utility model provides a method of gradual change polar distance fused salt electrolysis preparation tombarthite, be provided with graphite crucible 2 at last formula tombarthite fused salt electrolysis cell's of inserting cell shell inner wall, the inside edge of cell shell of tombarthite fused salt electrolysis cell 3 is inserted in the slope of positive pole 1, wherein, the contained angle that forms between the cell shell of positive pole 1 and tombarthite fused salt electrolysis cell 3 is 7, the incline direction satisfies the inside positive pole of fused salt and the distance of negative pole < the distance of fused salt surface positive pole and negative pole, negative pole 6 inserts tombarthite fused salt electrolysis cell 3 center perpendicularly, splendid attire electrolyte fused salt in the tombarthite fused salt electrolysis cell 3, in this embodiment, the electrolyte fused salt that adopts is cerium fluoride, the mixture of lithium fluoride, wherein, cerium fluoride accounts for the mass percent of electrolyte fused salt is 70%, place splendid attire rare earth metal's crucible 5 under negative pole 6.
And electrolyzing, wherein the adopted electrolytic voltage is 9-10V, the electrolytic current is more than 10000A, the polar distance is 10-15cm, namely the polar distance on the surface of the molten salt is 15cm, and the polar distance at the tail end of an electrode in the molten salt is 10cm to obtain the rare earth metal. Wherein the current efficiency of the rare earth molten salt electrolytic cell is 91%.
Comparative example 1
A method for preparing rare earth by molten salt electrolysis, which is the same as example 1 except that: in the adopted rare earth molten salt electrolytic cell, the polar distance between the cathode and the anode is equidistant, namely: the included angle formed between the anode 1 and the shell of the rare earth molten salt electrolytic cell 3 is 0 degree, compared with the embodiment 1, the method of the invention reduces the utilization rate of the anode by 10 percent, reduces the service life of the anode by 10 percent, and reduces the current density by less than 80 percent, generally 70 to 75 percent.
Comparative example 2
A method for preparing rare earth by molten salt electrolysis, which is the same as example 1 except that: in the adopted rare earth molten salt electrolytic cell, the polar distance between the anode and the cathode after the anode is obliquely inserted is that the polar distance between two poles on the surface of the molten salt is smaller than the polar distance between two poles in the molten salt, so that the current efficiency is reduced and is generally 70-75%; the anode utilization rate is reduced and the service life is also reduced.
Comparative example 3
A method for preparing rare earth by molten salt electrolysis is the same as example 1, except that: the adopted anode is thick at the top and thin at the bottom, so that the service life of the anode can be prolonged to a certain extent, but the current efficiency is reduced, and is generally 70-75%.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The above is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, for example, an anode is disposed on the upper portion of the molten salt, and a cathode is disposed on the lower portion, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (9)
1. The utility model provides a method of gradual change range of polar distance fused salt electrolysis preparation tombarthite, its characterized in that, in last formula tombarthite fused salt electrolysis trough of inserting, the positive pole slope inserts the inside edge of cell shell of tombarthite fused salt electrolysis trough, and the negative pole is inserted tombarthite fused salt electrolysis trough center perpendicularly, splendid attire electrolyte fused salt in the tombarthite fused salt electrolysis trough.
2. The method for preparing rare earth by molten salt electrolysis with gradually changed pole distances as claimed in claim 1, wherein the pole distances between the cathode and the anode are unequal.
3. The method for preparing rare earth by molten salt electrolysis with gradually changed pole distances according to claim 2, wherein the pole distances are gradually reduced from the liquid level of the molten salt to the inside of the molten salt, and the pole distance between two poles at the liquid level of the molten salt is larger than the pole distance between two poles inside the molten salt.
4. The method for preparing rare earth through molten salt electrolysis with gradually-changed polar distance according to claim 1, wherein the electrolyte molten salt is molten salt formed after heating fluoride and/or chloride.
5. The method for preparing rare earth through molten salt electrolysis with gradually-changed polar distance according to claim 4, wherein the fluoride mainly comprises rare earth fluoride and lithium fluoride, and when the electrolyte molten salt is completely fluoride, the mass percent of the rare earth fluoride in the electrolyte molten salt is more than or equal to 50%.
6. The method for preparing rare earth by molten salt electrolysis with gradually-changed polar distance as claimed in claim 4, wherein the chloride mainly comprises rare earth chloride, alkali chloride and chlorinated alkaline earth metal, wherein when the electrolyte molten salt is all chloride, the mass percentage of the rare earth chloride in the electrolyte molten salt is 20% -60%.
7. The method for preparing rare earth by molten salt electrolysis with gradually changed polar distance according to claim 1, wherein the included angle between the inclination angle of the anode and the vertical direction is 0 ° to 45 ° excluding 0 °, wherein 0 ° is vertical insertion.
8. The method for preparing rare earth by molten salt electrolysis according to claim 1, wherein the polar distance is between 5cm and 80 cm.
9. The method for preparing rare earth by molten salt electrolysis with gradually-changed polar distance according to claim 1, wherein the current efficiency of the rare earth molten salt electrolysis cell is more than 80%, the utilization rate of the anode is improved by more than 10%, and the service life of the anode is improved by 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210924452.3A CN115341246A (en) | 2022-08-02 | 2022-08-02 | Method for preparing rare earth through molten salt electrolysis with gradually-changed polar distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210924452.3A CN115341246A (en) | 2022-08-02 | 2022-08-02 | Method for preparing rare earth through molten salt electrolysis with gradually-changed polar distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115341246A true CN115341246A (en) | 2022-11-15 |
Family
ID=83950631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210924452.3A Pending CN115341246A (en) | 2022-08-02 | 2022-08-02 | Method for preparing rare earth through molten salt electrolysis with gradually-changed polar distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115341246A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845641A (en) * | 2009-12-21 | 2010-09-29 | 内蒙古科技大学 | Immersion-type rare earth electrolyzer |
| CN202626314U (en) * | 2012-06-07 | 2012-12-26 | 赣南师范学院 | Novel graphite anode for rare earth electrolysis |
| CN103397350A (en) * | 2013-08-06 | 2013-11-20 | 江西稀有金属钨业控股集团有限公司 | Special-shaped graphite anode |
| CN103993332A (en) * | 2013-02-18 | 2014-08-20 | 王宇栋 | Energy-saving aluminium electrolysis tank and auxiliary pole thereof |
| CN204174293U (en) * | 2014-10-22 | 2015-02-25 | 大唐长山热电厂 | A kind of Rare Earth Electrolysis slot device |
| CN105088284A (en) * | 2015-02-06 | 2015-11-25 | 虔东稀土集团股份有限公司 | Electrolytic furnace |
| JP2017179488A (en) * | 2016-03-30 | 2017-10-05 | 日立金属株式会社 | Molten salt electrolysis apparatus and molten salt electrolysis method |
| CN209162215U (en) * | 2018-11-13 | 2019-07-26 | 乐山有研稀土新材料有限公司 | One kind being used for Rare Earth Electrolysis carbon annode plate with the level |
-
2022
- 2022-08-02 CN CN202210924452.3A patent/CN115341246A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845641A (en) * | 2009-12-21 | 2010-09-29 | 内蒙古科技大学 | Immersion-type rare earth electrolyzer |
| CN202626314U (en) * | 2012-06-07 | 2012-12-26 | 赣南师范学院 | Novel graphite anode for rare earth electrolysis |
| CN103993332A (en) * | 2013-02-18 | 2014-08-20 | 王宇栋 | Energy-saving aluminium electrolysis tank and auxiliary pole thereof |
| CN103397350A (en) * | 2013-08-06 | 2013-11-20 | 江西稀有金属钨业控股集团有限公司 | Special-shaped graphite anode |
| CN204174293U (en) * | 2014-10-22 | 2015-02-25 | 大唐长山热电厂 | A kind of Rare Earth Electrolysis slot device |
| CN105088284A (en) * | 2015-02-06 | 2015-11-25 | 虔东稀土集团股份有限公司 | Electrolytic furnace |
| JP2017179488A (en) * | 2016-03-30 | 2017-10-05 | 日立金属株式会社 | Molten salt electrolysis apparatus and molten salt electrolysis method |
| CN209162215U (en) * | 2018-11-13 | 2019-07-26 | 乐山有研稀土新材料有限公司 | One kind being used for Rare Earth Electrolysis carbon annode plate with the level |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107475751A (en) | A kind of device and method that pure titanium is prepared by the use of liquid alloy as electrode | |
| CN103173780B (en) | Method and device for preparing solar polycrystalline silicon material by semi-continuous molten salt electrolysis | |
| CN102534663A (en) | Device for generating metal magnesium by electrolyzing magnesium chloride | |
| JP6501886B2 (en) | Molten salt electrolytic cell, method of producing metallic magnesium using the same, and method of producing titanium sponge | |
| CN203360596U (en) | Molten salt electrolytic bath for producing rare-earth metal and alloy | |
| CN103243355B (en) | A kind of totally-enclosed liquid cathode rare earth molten salt electrolytic | |
| CN102745704A (en) | Method for producing zirconium boride and synchronously outputting cryolite | |
| CN208250436U (en) | It is electrolysed copper scap anode frame | |
| CN101834295B (en) | Method for preparing negative grid of lead storage battery | |
| CN111705337B (en) | Method for preparing lead-calcium master alloy by molten salt galvanic cell method | |
| CN102925931B (en) | Negative electrode rare earth molten salt electrolytic under submergence type is inserted in side | |
| CN115341246A (en) | Method for preparing rare earth through molten salt electrolysis with gradually-changed polar distance | |
| CN110306052B (en) | Metallic lithium elementary substance and preparation method and application thereof | |
| CN201850313U (en) | Magnesium chloride electrolytic cell | |
| CN101892497A (en) | Anode used for aluminum electrolysis | |
| CN108118366A (en) | A kind of method of alumina dissolution speed in quickening aluminium cell | |
| CN202450165U (en) | Device for producing metal magnesium through electrolytic magnesium chloride | |
| CN205616961U (en) | Pure aluminium cathode low energy consumption aluminium cell | |
| CN104264189A (en) | Method for silver refining and continuous electrolysis | |
| CN110863216B (en) | Method for preparing high-purity indium through step cyclone electrodeposition | |
| CN1073170C (en) | Preparation of battery grade mixed rareearth metal by rareearth chloride molten-salt electrolysis and its equipment | |
| CN201793768U (en) | Aluminum electrolysis anode structure | |
| CN202175727U (en) | Rare earth molten salt electrolytic cell with side-mounted submerged lower cathode | |
| CN105177631B (en) | Electrorefining prepares the method and electrolytic cell of rafifinal | |
| CN105780055A (en) | Aluminum electrolysis cell with aluminum as cathode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |