KR20160116429A - Apparatus for recovering neodymium matal using electrowinning - Google Patents

Apparatus for recovering neodymium matal using electrowinning Download PDF

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KR20160116429A
KR20160116429A KR1020150044058A KR20150044058A KR20160116429A KR 20160116429 A KR20160116429 A KR 20160116429A KR 1020150044058 A KR1020150044058 A KR 1020150044058A KR 20150044058 A KR20150044058 A KR 20150044058A KR 20160116429 A KR20160116429 A KR 20160116429A
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South Korea
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anode
basket
electrolytic
cathode
chamber
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KR1020150044058A
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Korean (ko)
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KR101684266B1 (en
Inventor
이종현
류홍열
권숙철
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충남대학교산학협력단
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • C25C1/22—Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups C25C1/02 - C25C1/20
    • 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

Abstract

The present invention relates to a neodymium metal recovering apparatus using an electrowinning method which carries the neodymium metal generated by the electrowinning method in a basket to easily recover the neodymium metal. The present invention comprises: a chamber (100) composed of an upper part (110) and a lower part (120); an electrolytic bath (200) provided on a lower part (120) of the chamber, housing an electrolytic liquid containing an electrolyte; a heat protection plate provided on an upper end of the electrolytic bath (200), preventing heat of the electrolytic bath (200) from being discharged to the outside; an anode (400) provided on a lower end of the heat protection plate (300) to react with the electrolytic liquid; a cathode (500) provided on the lower end of the heat protection plate (300) to be spaced from the anode (400) at a predetermined distance and reacting with the electrolytic liquid; a basket (510) provided on a lower part of the cathode (500), housing a combined material formed by a reaction between the electrolytic liquid and the cathode (500); and a power source unit (600) connected to the anode (400) and the cathode (500) to which electric current is applied.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a neodymium metal recovery device using electrolytic smelting,

The present invention relates to a neodymium metal recovery device using an electrolytic smelting process. More particularly, the present invention relates to a neodymium metal recovery apparatus capable of recovering neodymium metal produced by electrolytic smelting and facilitating replacement of an oxidizing electrode.

Demand for permanent magnets, which are core components, is also increasing due to the expansion of hybrid cars, electric vehicles and wind power generation markets. The most efficient Nd-Fe-B magnets among existing permanent magnets are neodymium (Nd), which accounts for most of the price, and is entirely dependent on Chinese imports. As a result, it is difficult to supply high-quality neodymium and it can be used politically, so it is in urgent need of technology independence for neodymium metal.

In this connection, Japanese Laid-Open Patent Application No. 2014-111802 ("Rare Earth Metal Recovery Method ", Laid-open date 19.06.19.19, hereinafter referred to as" Prior Art ") describes a method for recovering neodymium metal by electrolytic smelting have. More specifically, the prior art provides an anode and a cathode in an electrolytic cell containing an electrolyte. Thereafter, power is applied to the positive electrode and the negative electrode to cause a current to flow between the positive electrode and the negative electrode to react with the electrolyte solution. At this time, the anode is oxidized to the oxidation electrode, the volume is reduced, and the anode is electrodeposited with neodymium metal. However, the prior art does not disclose how to easily replace the anode consumed by the reaction, and the neodymium metal must be recovered in the electrolytic cell, which is not a big problem in lab scale, but if the electrolytic cell is made large for industrialization , It is difficult to recover neodymium metal.

Therefore, in recent years, there has been a demand for a neodymium metal recovery apparatus using an electrolytic smelting process in which anode replacement and neodymium metal recovery can be easily performed.

Japanese Laid-Open Patent Application No. 2014-111802 ("Rare Earth Metal Recovery Method ", published on June 19, 2014)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a neodymium metal recovery apparatus using an electrolytic smelting method capable of easily recovering neodymium metal produced by an electrolytic smelting process.

It is another object of the present invention to provide a neodymium metal recovery device using an electrolytic smelting process which can facilitate the replacement of a cathode which is oxidized and consumed during a process.

Another object of the present invention is to provide a neodymium metal recovery device using an electrolytic smelting process that can easily discharge gas generated during a process.

The present invention relates to a neodymium metal recovery apparatus using an electrolytic smelting method, and more particularly, to a neodymium metal recovery apparatus using a electrolytic smelting method, comprising: a chamber 100 comprising an upper portion 110 and a lower portion 120; An electrolytic bath 200 provided in a lower portion 120 of the chamber and containing an electrolyte therein; A heat sink 300 provided at an upper end of the electrolytic bath 200 to prevent the heat of the electrolytic bath 200 from being discharged to the outside; An anode 400 disposed at a lower end of the heat sink 300 and reacting with the electrolyte solution; A cathode 500 disposed at a lower end of the heat sink 300 and spaced apart from the anode 400 by a predetermined distance and reacting with the electrolyte solution; A basket 510 provided at a lower portion of the cathode 500 to receive a bond formed by the reaction between the electrolyte and the cathode 500; A power source 600 connected to the anode 400 and the cathode 500 to apply a current; .

The anode 400 may include a cathode support 430 connecting the heat dissipation plate 300 and the anode 400; A positive electrode latching part 421 provided under the positive electrode support plate 430 and protruding outwardly; A fitting groove 420 formed in the upper portion of the anode 400 to correspond to the anode coupling portion 421 and fitted into the anode coupling portion 421; And

An insulating part 431 disposed between the heat sink 300 and the anode 400 and insulated from the heat sink 300 and the anode 400; .

The anode 400 includes an exhaust gas collecting pipe 410 disposed at an upper portion of the anode 400 and configured to discharge gas generated by the reaction between the electrolyte and the anode 400 to the outside. .

The exhaust gas collecting pipe 410 includes an exhaust gas support 412 connected to the heat sink 300; A cap 411 coupled to a lower portion of the exhaust gas support 412 and surrounding the upper portion of the anode 400; .

The exhaust gas support 412 protrudes outwardly from a lower portion of the exhaust gas support 412 to prevent the cap 411 from being detached. .

In addition, the basket 510 includes basket grooves 511 formed at both sides 110 of the basket 510, A basket support 520 connecting the heat sink 300 and the basket 510; A basket catching part 521 protruding from the lower part of the basket supporting part 520 and penetratingly coupled to the basket recess 511; .

The chamber 100 may further include a driving unit 700 disposed at an upper portion 110 of the chamber and driven to move the heat sink 300 in the upper and lower directions of the chamber 100.

The chamber 100 may include a heater unit 121 provided at a lower portion 120 of the chamber and configured to surround the electrolyzer 200 to supply heat to the electrolyzer 200; A heat insulating portion 122 provided at a lower portion of the chamber 100 and formed to surround the heater portion 121 to prevent heat generated in the heater portion 121 from being discharged to the outside; And

An outer crucible 123 provided between the electrolyzer 200 and the heater unit 121; .

The chamber 100 further includes a gas collecting unit 800 connected to the exhaust gas collecting pipe 410 and collecting the gas generated by the reaction between the anode 400 and the electrolytic solution.

The electrolytic bath 200 may be made of a metal selected from the group consisting of tungsten (W), molybdenum (Mo), tantalum (Ta), carbon (C), boron nitride (BN), silicon nitride (Si 3 N 4 ) And is a single material.

In addition, the anode 400 is a graphite (C) material.

The cathode 500 is made of molybdenum (MO) or tungsten (W).

Further, the basket 510 is made of tungsten (W).

The basket support 520 may be any one selected from the group consisting of tantalum (Ta), molybdenum (MO), and tungsten (W).

As described above, the present invention relates to a neodymium metal recovery device using an electrolytic smelting process, and has an effect that neodymium metal produced by the electrolytic smelting process can be easily collected in a basket.

Further, the present invention has an effect that the anode consumed by the electrolytic smelting process can be easily replaced.

Further, the present invention has an effect that the gas generated by the reaction between the anode and the electrolytic solution can be easily discharged and collected.

1 is a schematic diagram of a neodymium metal recovery apparatus using an electrolytic smelting process according to the present invention;
FIG. 2 is a perspective view of a heat sink, a cathode, and a cathode of a neodymium metal recovery apparatus using an electrolytic smelting method according to the present invention.
Figure 3 is a cross-sectional view illustrating the combination of an anode support and a heatsink in a neodymium metal recovery apparatus in accordance with the present invention;
Figure 4 is a schematic diagram illustrating the movement of the anode support downwards to replace the anode of the present invention;
5 is a schematic diagram illustrating the separation of the anode of the present invention from the anode support;
Figure 6 is a schematic representation of moving the cap upward to replace the anode of the present invention;
7 is a perspective view of a basket of a neodymium metal recovery apparatus using the electrolytic smelting method according to the present invention

Hereinafter, the technical idea of the present invention will be described more specifically with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

FIG. 1 is a schematic view of a neodymium metal recovery apparatus using the electrolytic smelting process according to the present invention, and FIG. 2 is a perspective view of a heat sink, a cathode, and a cathode of a neodymium metal recovery apparatus using the electrolytic smelting process according to the present invention. FIG. 3 is a cross-sectional view illustrating an anode support and a heat sink coupled to each other in the neodymium metal recovery apparatus according to the present invention. FIG. 4 is a schematic view illustrating the anode support being moved downward in order to replace the anode of the present invention. 5 is a schematic diagram showing the separation of the anodes of the present invention from the anode support, and Fig. 6 is a schematic diagram illustrating the movement of the caps upward to replace the anode of the present invention. 7 is a perspective view of a basket of a neodymium metal recovery apparatus using the electrolytic smelting method according to the present invention.

1 and 2, a neodymium metal recovery apparatus using an electrolytic smelting method includes an electrolytic bath 200, a heat sink 300, a cathode 400, a cathode 400, and a cathode 400. The chamber 200 includes an upper portion 110 and a lower portion 120, (500), a basket (510), a driving unit (700), and a power supply unit (600). In more detail, the upper portion 110 of the chamber is provided with a driving portion 700, and the driving portion 700 is connected to the heat sink 300. The heat dissipation plate 300 can be moved up and down in the chamber 100 by the driving unit 700. The heat dissipation plate 300 includes an anode 400, a cathode 500, and a basket 510 at a lower portion thereof. The lower portion 120 of the chamber 100 is provided with an electrolytic bath 200, a heater 121, a heat insulating portion 122 and an outer crucible 123. The electrolytic bath 200 contains an electrolytic solution. The heater unit 121 heats the electrolytic bath 200 and the outer crucible 123 and the heat insulating unit 122 prevents heat generated in the heater unit 121 from being discharged to the outside. The outer crucible 123 is provided between the electrolytic bath 200 and the heater 121 to prevent the electrolytic bath 200 from being exposed to the outside when the electrolytic bath 200 is broken. Also, the power source unit 600 is connected to the anode 400 and the cathode 500 to apply a current. The chamber 100 is connected to the gas collecting unit 800 and the gas generated by the reaction between the anode 400 and the electrolytic solution is collected in the gas collecting unit 800.

The electrolytic bath 200 is provided in the lower part 120 of the chamber and contains an electrolytic solution therein and an outer crucible 123, a heater part 121 and a heat insulating part 122 on the outside. The electrolytic bath 200 is formed in the same shape as a crucible for containing a material, and receives heat generated from the heater unit 121 to melt an electrolyte contained in the electrolytic solution. The electrolytic bath 200 is made of a material that can withstand high temperatures during electrolytic smelting and is not reactive with electrolytes. Examples of the nonmetal materials include carbon (C), boron nitride (BN), silicon nitride (Si 3 N 4 ), nitrides (Si 3 N 4 ) Aluminum (AlN) is preferred. The heat insulating part 122 prevents the heat generated from the heater part 121 and the electrolytic bath 200 from being discharged to the outside.

The outer crucible 123 is provided between the electrolytic bath 200 and the heater 121 to prevent the electrolytic bath 200 from being exposed to the outside when the electrolytic bath 200 is broken. The outer crucible 123 is made of Inconel, stainless steel, or the like. The outer crucible 123 is provided with a sealing ring 124 at a portion where the outer crucible 123 is in contact with the heat dissipating plate 300. The inside of the electrolytic bath 200 is sealed and maintained in an inert atmosphere.

The electrolytic solution is contained in the electrolytic bath 200 and is composed of a molten salt and a neodymium (Nd) halogen compound composed of an alkali metal halogen compound or an alkaline earth metal halogen compound. The electrolyte is a material that dissolves in a solvent and is dissociated into ions to flow an electric current. The electrolyte may be a mixture of an alkali metal halogen compound and a neodymium halogen compound, or a mixture of an alkaline earth metal halogen compound and a neodymium halogen compound.

In order to deposit neodymium metal on the cathode 500 during electrolytic smelting, a neodymium halogen compound may be used as a precursor constituting the electrolytic solution, but it is most preferable that neodymium oxide (Nd 2 O 3 ) is dissolved in an electrolysis solution in terms of economy .

The molten salt is in a state in which the electrolyte is dissolved in a liquid phase, and preferably exists in a liquid state at 1025 DEG C or higher. This is because the neodymium metal exists in a liquid state at 1025 ° C or higher, and neodymium metal is electrodeposited in a liquid state and then falls off into the basket and is easily recovered. The molten salt LiF-NdF 3, LiCl-NdF 3, LiF-NdCl 3, LiF-NdCl 3, KF-NdF 3, KCl-NdF 3, KF-NdCl 3, KCl-NdCl 3, CaF 2 -NdF 3, CaCl 2 -NdF 3 , CaF 2 -NdCl 3 , and CaCl 2 -NdCl 3. When the compound is present in a liquid phase, it is not limited to a composition. Further, the molten salt may be used by dissolving Nd 2 O 3 in each halogen compound.

1 and 2, the heat sink 300 serves as a cover for covering the upper end of the electrolytic bath 200 and prevents the heat of the electrolytic bath 200 from being discharged to the outside. In addition, a plurality of the heat sinks 300 may be stacked to further increase the heat insulating effect.

The upper part of the heat sink 300 is connected to the driving part 700 so that the upper part of the heat sink 300 is connected to the upper part of the heat sink 300 in the vertical direction Can be moved. More specifically, when the heat sink 300 is moved downward by the driving unit 700, the anode 400, the cathode 500, and the basket 510 are immersed in the electrolytic solution in the electrolytic bath 200 do. Meanwhile, when the heat sink 300 is moved upward by the driving unit 700, the anode 400, the cathode 500, and the basket 510 are separated from the electrolyte and positioned in the upper portion 110 of the chamber . At this time, the operator can perform an operation of replacing the anode 400 in the upper portion 110 of the chamber and recovering the neodymium metal of the basket 510.

1 and 2, since the anode 400 reacts with the electrolytic solution by oxidation with the electrolytic solution and is oxidized, the volume of the anode 400 needs to be reduced and replaced, and the anode 400 has a surface area twice or more . Further, the material of the anode 400 is preferably graphite in which impurities are not mixed into the electrolyte even if they are oxidized.

The anode 400 is provided below the heat sink 300 and is connected to the heat sink 300 by a cathode support 430.

3, the anode support member 430 serves to connect the anode 400 and the heat sink 300. As shown in FIG. More specifically, the anode support member 430 is formed through the heat sink 300 and has an insulating portion 440 and is fixed to the upper portion of the heat sink 300. The insulator 440 is provided between the anode support 430 and the heat sink 300 to prevent the current flowing in the anode support 430 from flowing to the heat sink 300. In addition, the insulating portion 440 is provided with a fixing portion 441 for fixing the anode support 430. The insulating portion 440 is provided with a flue gas passage 442 through which the gas generated by the reaction between the anode 400 and the electrolytic solution flows out. In addition, the exhaust gas passage 442 is connected to the gas collecting unit 800.

The anode 400 is provided with an exhaust gas collecting pipe 410 at an upper portion thereof. The exhaust gas collecting pipe 410 discharges the gas generated by the reaction between the anode 400 and the electrolytic solution to the outside of the chamber 100. 1, the exhaust gas collecting pipe 410 is connected to a gas collecting unit 800 provided outside the chamber 100 to guide the gas to be collected by the gas collecting unit 800 . Thus, the gas is collected in the gas collecting unit 800 and is not introduced into the atmosphere, thereby preventing environmental pollution.

The gas is formed of CF 4 , CCl 4 , CO and CO 2 according to the following reaction formulas 1 to 3.

 [Reaction Scheme 1]

When NdF 3 is used as a precursor,

C + 4F - = CF 4 + 4e -

And F ions react with C, which is a material of the anode 400, to form a CF 4 gas.

[Reaction Scheme 2]

When using the NdCl 3 as a precursor,

C + 4Cl - = CCl 4 + 4e -

And Cl ion reacts with C, which is the material of the anode 400, to form CCl 4 gas.

[Reaction Scheme 3]

When the precursor is Nd 2 O 3

C + O 2 - = CO + 2e -

C + 2O 2 - = CO 2 + 4e -

CO and CO 2 are generated depending on the process temperature.

Referring to FIG. 4, the exhaust gas collecting pipe 410 includes an exhaust gas support 412 and a cap 411. The exhaust gas support 412 connects the heat sink 300 to the cap 411 and the cap 411 is coupled to the lower portion of the exhaust gas support 412 to surround the upper portion of the anode 400 .

The anode 400 is reduced in volume by generating gases such as CF 4 , CCl 4 , CO, and CO 2 by the above-mentioned reaction formulas 1 to 3. Therefore, the anode 400 should be replaced periodically. A method of replacing the anode 400 through the following embodiments will be described.

As shown in FIGS. 4 and 5, when the cap 411 is screwed to the exhaust gas support 412, a method of replacing the anode 400 will be described. The anode support member 430 is formed through the heat sink 300 and is fixed to the heat sink 300 by the insulation member 440. At this time, in order to replace the anode 400, the anode support 430 is moved downward so that the upper part of the anode 400 is out of interference with the cap 411. That is, the insulator 400 uncovers the anode support 430 and moves the anode support 430 in the downward direction using the anode driver 431 provided in the upper portion of the chamber. The anode 400 is moved downward until it is out of interference with the cap 411, and then the anode 400 is removed from the anode support 430. Thereafter, the fitting groove 420 of the new anode 400 is fitted to the anode coupling portion 421 and the anode support member 430 is moved in the upward direction so that the upper portion of the anode 400 is connected to the cap 411 ).

5 and 6, another anode replacement method is provided with an exhaust gas catching portion 413 at a lower portion of the exhaust gas support base 412, and the cap 411 is disposed along the exhaust gas support base 412 A method of replacing the anode 400 will be described.

5, the anode support 430 includes a cathode catching portion 421 protruding outwardly at a lower portion thereof, and the anode 400 is provided at an upper portion thereof with the cathode catching portion 421 And the fitting groove 420 is formed in a shape that is shaped like a letter. That is, the positive electrode latching portion 421 is fitted into the fitting groove 420, and the positive electrode 400 is coupled to the positive electrode support 430. Due to such a configuration, the anode 400 has an advantage of being easy to replace.

6, the flue gas catching portion 413 is protruded outwardly from a lower portion of the flue gas supporter 412 so that the cap 411 is not separated from the flue gas supporter 412 . Therefore, the cap 411 can be moved up and down along the exhaust gas support 412, and is not released by the exhaust gas catching part 413.

5, 6A and 6B, another method of replacing the anode is described. After the cap 411 is lifted upward as shown in FIG. 6B, the anode 400 is lifted up from the anode support 430 Remove. 6A, the cap 411 is lowered to bring the upper portion of the anode 400 into contact with the cap (not shown) 411).

1, 2, and 7, the cathode 500 is provided at a lower portion of the heat sink 300, and is spaced apart from the anode 400 by a predetermined distance. Also, neodymium ions are reduced to neodymium metal and electrodeposited in the cathode 500 as shown in the following reaction formula (4). Accordingly, the anode 500 is preferably made of molybdenum (Mo) or tungsten (W) which is not reactive with an electrolyte and does not form an intermetallic compound with a neodymium metal.

[Reaction Scheme 4]

In the electrolytic smelting, the reaction of the cathode (500) causes the neodymium ion of the electrolyte to obtain electrons and become a neodymium metal,

Nd 3 + + 3e - = Nd

Nd < / RTI >

The cathode 500 is provided with a basket 510 at a lower portion thereof and the basket 510 serves to hold neodymium metal deposited on the cathode 500. More specifically, when a current is applied to the cathode 500, the cathode 500 reacts with the electrolyte, and neodymium ions contained in the electrolyte are reduced to neodymium metal and electrodeposited on the cathode 500. At this time, if the temperature of the electrolytic solution is 1025 DEG C or higher, the neodymium metal exists in a liquid phase, and the neodymium metal in the liquid state is electrodeposited to the cathode 500 and dropped to the lower basket 510. In addition, the basket 510 is preferably made of tungsten (W) that is not reactive with an electrolyte and does not form an intermetallic compound with a neodymium metal. The basket support 520 includes molybdenum (Mo), tungsten (W) and tantalum (Ta) are preferable.

The basket (510) is connected to the heat sink (300) by a basket support base (520). In addition, the basket 510 is formed by punching basket grooves 511 on both side surfaces thereof. The basket support base 520 is provided with a basket catching portion 521 protruding downward and penetrates through the basket recess 511. Since the basket 510 and the basket support 520 can be separated by the basket groove 511 and the basket catching part 521, neodymium metal can be easily recovered. Further, the shape of the basket groove 511 and the basket catching portion 521 may be variously formed.

In the neodymium metal recovery apparatus of the present invention, the precursor consumed by recovering the neodymium metal should be added at the same time as the recovery, and it is economically more preferable that the added precursor uses neodymium oxide rather than neodymium halogen compound.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: chamber
110: upper part of the chamber
120: Lower part of the chamber
121:
122:
123: Outside crucible
124: sealing
200: electrolytic bath
300: heat sink
400: anode
410: Flue gas collection pipe
411: Cap
412: Flue gas support
413: Flue gas catching part
420: fitting groove
421:
430: anode support
431:
440:
441:
442: Flue gas distribution channel
500: cathode
510: Basket
511: Basket Home
520: Basket support
521:
600:
700:
800: gas collecting part

Claims (14)

A chamber 100 comprising an upper portion 110 and a lower portion 120;
An electrolytic bath 200 provided in a lower portion 120 of the chamber and containing an electrolyte therein;
A heat sink 300 provided at an upper end of the electrolytic bath 200 to prevent the heat of the electrolytic bath 200 from being discharged to the outside;
An anode 400 disposed at a lower end of the heat sink 300 and reacting with the electrolyte solution;
A cathode 500 disposed at a lower end of the heat sink 300 and spaced apart from the anode 400 by a predetermined distance and reacting with the electrolyte solution;
A basket 510 provided at a lower portion of the cathode 500 to receive a bond formed by the reaction between the electrolyte and the cathode 500; And
A power supply 600 connected to the anode 400 and the cathode 500 to apply a current;
Wherein the neodymium metal recovering apparatus comprises an electrolytic smelting method.
The method according to claim 1,
The anode 400 has a
A cathode support 430 connecting the heat dissipation plate 300 and the anode 400;
A positive electrode latching part 421 provided under the positive electrode support plate 430 and protruding outwardly;
A fitting groove 420 formed in the upper portion of the anode 400 to correspond to the anode coupling portion 421 and fitted into the anode coupling portion 421; And
An insulating part 431 disposed between the heat sink 300 and the anode 400 and insulated from the heat sink 300 and the anode 400;
Wherein the neodymium metal recovering apparatus comprises an electrolytic smelting method.
3. The method of claim 2,
The anode 400 has a
An exhaust gas collecting pipe 410 provided on the upper portion of the anode 400 and configured to discharge gas generated by the reaction between the electrolyte and the anode 400 to the outside;
Wherein the neodymium metal recovering apparatus comprises an electrolytic smelting method.
The method of claim 3,
The exhaust gas collecting pipe (410)
An exhaust gas support 412 connected to the heat sink 300; And
A cap 411 coupled to a lower portion of the exhaust gas support 412 and surrounding the upper portion of the anode 400;
Wherein the neodymium metal recovering apparatus comprises an electrolytic smelting method.
5. The method of claim 4,
The exhaust gas support 412
A flue gas catching portion 413 protruding outwardly from the lower portion to prevent the cap 411 from being detached;
Wherein the neodymium metal recovery apparatus further comprises an electrolytic smelting method.
The method according to claim 1,
The basket (510)
Basket grooves 511 formed in the upper side 110 of both sides of the basket 510;
A basket support 520 connecting the heat sink 300 and the basket 510; And
A basket catching portion 521 protruding from the lower portion of the basket support platform 520 and penetratingly coupled to the basket recess 511;
Wherein the neodymium metal recovering apparatus comprises an electrolytic smelting method.
The method according to claim 1,
The chamber (100)
Further comprising a driving unit 700 disposed at an upper portion 110 of the chamber and driven to move the heat sink 300 in the upper and lower directions of the chamber 100. The neodymium metal recovery Device.
The method according to claim 1,
The chamber (100)
A heater unit 121 provided at a lower portion 120 of the chamber and configured to surround the electrolyzer 200 and supplying heat to the electrolyzer 200;
A heat insulating portion 122 provided at a lower portion of the chamber 100 and formed to surround the heater portion 121 to prevent heat generated in the heater portion 121 from being discharged to the outside; And
An outer crucible 123 provided between the electrolyzer 200 and the heater unit 121;
Wherein the neodymium metal recovery apparatus further comprises an electrolytic smelting method.
The method according to claim 1,
The chamber (100)
Further comprising a gas collecting unit connected to the exhaust gas collecting pipe and collecting gas generated by the reaction between the anode and the electrolytic solution. 2. The neodymium metal recovering apparatus according to claim 1, .
The method according to claim 1,
The electrolytic bath (200)
Wherein the material is one selected from tungsten (W), molybdenum (Mo), tantalum (Ta), carbon (C), boron nitride (BN), silicon nitride (Si 3 N 4 ) and aluminum nitride Neodymium metal recovery system using electrolytic smelting process.
The method according to claim 1,
The anode 400 has a
Graphite (C). ≪ RTI ID = 0.0 > 8. < / RTI >
The method according to claim 1,
The cathode (500)
Wherein the molten metal is molybdenum (MO) or tungsten (W).
The method according to claim 1,
The basket (510)
Tungsten (W) material. ≪ Desc / Clms Page number 24 >
The method according to claim 1,
The basket support (520)
Wherein the refractory material is one selected from the group consisting of tantalum (Ta), molybdenum (MO), and tungsten (W).
KR1020150044058A 2015-03-30 2015-03-30 Apparatus for recovering neodymium matal using electrowinning KR101684266B1 (en)

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CN107541755A (en) * 2017-08-10 2018-01-05 中国铝业股份有限公司 A kind of internal heating type fused-salt bath
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KR101983999B1 (en) * 2017-11-29 2019-05-30 한국생산기술연구원 Molten salt electrorefiner
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WO2023038401A1 (en) * 2021-09-10 2023-03-16 주식회사 케이에스엠테크놀로지 Electrolytic refining method for neodymium compound and preparation method for neodymium compound granule used therefor

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