CN206736373U - A kind of cathodic protection set of re metal electrolyzing - Google Patents
A kind of cathodic protection set of re metal electrolyzing Download PDFInfo
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- CN206736373U CN206736373U CN201720552728.4U CN201720552728U CN206736373U CN 206736373 U CN206736373 U CN 206736373U CN 201720552728 U CN201720552728 U CN 201720552728U CN 206736373 U CN206736373 U CN 206736373U
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- negative electrode
- sleeve
- cooling tube
- rare earth
- chymoplasm
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Abstract
The utility model discloses a kind of cathodic protection set of re metal electrolyzing; the protective case includes sleeve, cooling tube and chymoplasm; cooling tube is wound with the sleeve; chymoplasm is filled between the sleeve and negative electrode; coolant is connected with the cooling tube; the material of the sleeve is heat-resisting cast iron, and the material of the cooling tube is copper alloy, and the material of the chymoplasm is carbon material.When the protective case can make negative electrode participation electrode reaction, its consumption of being gasified by high-temperature oxydation is prevented, so as to extend negative electrode service life, reduces operating cost, moreover it is possible to improves the product quality of re metal electrolyzing.
Description
Technical field
The utility model belongs to rare earth metal and produces field, and in particular to a kind of cathodic protection set of re metal electrolyzing.
Background technology
Rare earth metal is also known as rare earth element, is scandium, yttrium, the general name of 17 kinds of elements of group of the lanthanides in the B races of the periodic table of elements III, commonly uses
R or RE is represented.First rare earth element yttrium was found from 1794, the rare earth element promethium for finding nature by 1972, after 178
Year, people just all find 17 kinds of rare earth elements in nature.The gloss of rare earth metal is between silver and iron, rare earth gold
The chemism of category is very strong.
Rare earth metal has particularly important purposes, is the important component of contemporary high technology new material.By rare earth gold
A series of compound semiconductors that category forms with non-ferrous metal, electron-optical material, specific alloy, new function material and organic
Metallic compound etc., it is both needed to the rare earth metal using special performance.Though dosage is little, most important, lacking it can not.Thus
It is widely used in contemporary mechanics of communication, electronic computer, aerospace exploitation, medical and health, photosensitive material, photoelectric material, energy and material
With catalyst material etc..China rare earth mineral metal products is enriched, and preferable resources supplIes are provided for development rare earth metal industry.
China rare earth resource very abundant, commercial reserves account for No. 1 in the world.Except Inner Mongolia Autonomous Region Bayan Obo rare earth
Outside mineral intergrowth and south jiangxi ion-adsorption type ore, there be monazite, phosphorus yttrium in the provinces and regions such as Guangdong, Guangxi, Jiangxi, Shandong, Hunan, Taiwan
Ore deposit, fergusonite, bastnasite etc..
In current explored rare earth reserves, China first, the 43% of 210,000,000 tons of world's gross reserves is accounted for, solely connection
Body accounts for the 19.5% of world saving up to 40,000,000 tons, occupies the second in the world, and the U.S. is 27,000,000 tons, accounts for the world 12.86%, position
Occupy the 3rd.Thereafter the owning amount of the state such as Brazil, Australia, Vietnam, Canada and India is also considerable.Chinese Control at present
The share in global rare earth market 98%, have from main three countries of Chinese import rare earth：Japan, South Korea, the U.S..Wherein, day
Originally, South Korea does not have rare earth resources, and the U.S. possesses rare earth resources but forbids exploiting.
The chemism of rare earth metal is very strong, when being acted on oxygen, the very high R of generation stability2O3Type oxide.Rare earth
The fusing point of metal oxide is more than 2000 DEG C.The atomic radius of europium is maximum, and property is most active, at room temperature in air
Metallic luster is lost immediately, is oxidized to powder quickly.Lanthanum, cerium, praseodymium, neodymium are also easy to aoxidize, in Surface Creation sull.Gold
It is strong to belong to yttrium, gadolinium, the corrosion resistance of lutetium, its metallic luster can be kept for a long time.Rare earth metal can be anti-with water with different rates
Should.Europium discharges hydrogen with cold water vigorous reaction.Cerium group rare-earth metal is slow with water reaction at room temperature, and temperature increases then reaction and added
It hurry up.Yttrium group rare earth metal is then relatively stable.Rare earth metal reacts the halide of+2 ,+3 ,+4 valencys of generation with halogen at high temperature.Nothing
Water halide water imbibition is very strong, it is easy to hydrolysis generation ROX (X represents halogen) type oxyhalide.Rare earth metal can also with boron,
Carbon, sulphur, phosphorus, hydrogen, nitrogen reaction generate corresponding compound.
Now, the key industry method for producing rare earth metal is fused salt electrolysis process, is divided into two by rare earth molten-salt electrolysis system
Class, first, RCl3- KCl (NaCl) system, it is electrolysed rare earth-iron-boron；Second, RF3-LiF-BaF2(CaF2) system, it is electrolysed rare earth oxygen
Compound.The electrolyte of chloride system electrolysis is by 35~50% anhydrous RCl3Prepared with KCl.Impurity contains gauge in raw material
It is set to Fe2O3<0.07%th, Ca<3%th, Th<0.03%, SO An<0.05%, PO Li<0.01%.Electrolysis temperature melts higher than metal
Point, it is 900~950 DEG C when Electrowinning norium and cerium；It is 1000~1030 DEG C during Electrowinning lanthanum；Electrowinning
It is about 1050 DEG C during praseodymium neodymium alloy.Metal direct yield is 95~97%, and purity is 99.3~99.5%.Wherein, electrode reaction refers to
In galvanic cell or electrolytic cell, the half-reaction that occurs on two electrodes, because in galvanic cell and electrolytic cell, oxidation reaction and also
Original reaction occurs on two electrodes respectively.And be electrolysed be by electric current by electrolyte solution or molten state electrolyte (
Claim electrolyte), the process of redox reaction is caused on negative electrode and anode.
The electrode reaction produced for existing rare earth metal, the cathode material that can be typically used to participate in electrode reaction only have molybdenum
With a small amount of metal material such as tungsten, and because tungsten has good fluorine-resistant corrosivity, in fluorine-containing electrolyte-electrode reaction,
It is general to use tungsten material as negative electrode, but tungsten under conditions of 600 DEG C of temperatures above and contact oxygen, i.e., negative electrode is in fluorine-containing melting
When electrode reaction is participated under system, easily gasify because of high-temperature oxydation, exacerbate the consumption of cathode material, so as to influence negative electrode
Service life, result in the need for being replaced as frequently as negative electrode, improve operating cost, meanwhile, and because of the negative electrode material under prior art
Material gasifies because of high-temperature oxydation, so as to necessarily have impurity into the final products of re metal electrolyzing, i.e. cathode material
Oxide is entered in rare earth metal finished product, so as to have impact on the quality of product.With national for rare earth metal management and control now
Increasingly lifting, for industrial Extraction of rare earth metal become more meticulous require also more and more higher, therefore need badly and enter to above mentioned problem
Row improves.
Utility model content
(1) technical problems to be solved
In view of the shortcomings of the prior art, the technical problems to be solved in the utility model is to provide a kind of re metal electrolyzing
Cathodic protection set, when the protective case can make negative electrode participation electrode reaction, its consumption of being gasified by high-temperature oxydation is prevented, so as to extend
Negative electrode service life, reduces operating cost, moreover it is possible to improve the product quality of re metal electrolyzing.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides the cathodic protection of such a re metal electrolyzing
Set, includes sleeve, cooling tube and chymoplasm, cooling tube is wound with the sleeve, is filled out between the sleeve and negative electrode
Mesenchymal, coolant is connected with the cooling tube, the material of the sleeve is heat-resisting cast iron, and the material of the cooling tube is that copper closes
Gold, the material of the chymoplasm is carbon material.
(3) beneficial effect
The utility model is compared with prior art, on the one hand, is isolated negative electrode by sleeve and chymoplasm, certain
Contact of the negative electrode with oxygen is prevented in degree, so as to prevent cathode material to gasify because of high-temperature oxydation；On the other hand, pass through
Cooling tube circulates coolant and negative electrode is cooled down, and has haveed the function that to reduce negative electrode upper end temperature, while increase again
The overall temperature gradient of negative electrode, shortens zone length of the cathode temperature more than 600 DEG C, so as to further prevent negative electrode material
Material gasifies because of high-temperature oxydation, and then extends the service life of negative electrode, avoids and is replaced as frequently as negative electrode, reduce operation into
This.Meanwhile just because of the utility model prevents cathode material to gasify because of high-temperature oxydation, enter so as to considerably reduce impurity
Enter the possibility in rare earth metal finished product, so as to improve the product quality of re metal electrolyzing.
Wherein, the material of sleeve is heat-resisting cast iron, cast iron high temperature resistant, while easy to process, can so strengthen this practicality
New durability, and can reduce processing cost；The material of cooling tube is copper alloy, and copper alloy thermal conductivity is good, while is had good
Good heat resistance, such cooling tube can be cooled down preferably to negative electrode, strengthen effect of the present utility model；The material of chymoplasm
Matter is carbon material, and carbon material thermal conductivity is good, while has good heat resistance, and such chymoplasm can be preferably to the moon
Pole carries out heat conduction, and is preferably isolated negative electrode, extends service life of the present utility model.
Brief description of the drawings
, below will be to embodiment for clearer explanation the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, to those skilled in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Mark in accompanying drawing for：1- negative electrodes, 2- sleeves, 3- cooling tubes, 4- chymoplasms, 5- electric connections.
Embodiment
Below in conjunction with accompanying drawing, clear, complete description is carried out to the technical scheme in the embodiment of the utility model, is shown
So, described embodiment is only part of the embodiment of the present utility model, rather than whole embodiments.Based on this practicality
Embodiment in new, those of ordinary skill in the art are obtained every other on the premise of creative work is not made
Embodiment, belong to the scope of the utility model protection.
A kind of cathodic protection set of re metal electrolyzing, as shown in figure 1, include sleeve 2, cooling tube 3 and chymoplasm 4,
Cooling tube 3 is wound with the sleeve 2, chymoplasm 4 is filled between the sleeve 2 and negative electrode 1, is connected with the cooling tube 3 cold
But liquid, the material of the sleeve 2 is heat-resisting cast iron, and the material of the cooling tube 3 is copper alloy, and the material of the chymoplasm 4 is
Carbon material.
When generally carrying out rare earth metal extraction using fused salt electrolysis process, negative electrode 1 connects electric connection 5, is connect using electricity
First 5 pairs of negative electrodes 1 are powered, and negative electrode 1 are extend into the re metal electrolyzing liquid of molten state, the rare earth near negative electrode 1
Metal ion carries out electrochemical reducting reaction, in course of reaction, on the surface of negative electrode 1 for not extending into electrolyte, closer to electricity
The temperature of negative electrode 1 of melting body region is higher in solution liquid, and the liquid level temperature of molten mass is about 1100 DEG C, is melted in electrolyte
The temperature of negative electrode 1 of body region is lower, meanwhile, oxygen concentration is lower in the regional air of molten mass, further away from molten mass
Regional air in oxygen concentration it is higher.Because tungsten is under conditions of 600 DEG C of temperatures above and contact oxygen, easily because of high temperature oxygen
Change and gasify, so as to can constantly consume the material of negative electrode 1, therefore when being cased with protective case of the present utility model on negative electrode 1, one
Aspect, is isolated negative electrode 1 by sleeve 2 and chymoplasm 4, prevents contact of the negative electrode 1 with oxygen to a certain extent, from
And the material of negative electrode 1 is prevented to gasify because of high-temperature oxydation；On the other hand, coolant is circulated by cooling tube 3 to enter negative electrode 1
Row cooling, have the function that to reduce the upper end temperature of negative electrode 1, while increased the overall temperature gradient of negative electrode 1 again, shortened the moon
Zone length of the temperature of pole 1 more than 600 DEG C, so as to further prevent the material of negative electrode 1 to gasify because of high-temperature oxydation, Jin Eryan
The service life of negative electrode 1 has been grown, has avoided and is replaced as frequently as negative electrode 1, reduce operating cost.Meanwhile just because of this practicality is new
Type prevents the material of negative electrode 1 to gasify because of high-temperature oxydation, so as to considerably reduce impurity into rare earth metal finished product can
Can, so as to improve the product quality of re metal electrolyzing.
Wherein, the material of sleeve 2 is heat-resisting cast iron, cast iron high temperature resistant, while easy to process, can so strengthen this practicality
New durability, and can reduce processing cost；The material of cooling tube 3 is copper alloy, and copper alloy thermal conductivity is good, while is had good
Good heat resistance, such cooling tube 3 can be cooled down preferably to negative electrode 1, strengthen effect of the present utility model；Chymoplasm 4
Material be carbon material, carbon material thermal conductivity is good, while has good heat resistance, and such chymoplasm 4 can be more preferable
Ground carries out heat conduction to negative electrode 1, and is preferably isolated negative electrode 1, extends service life of the present utility model.
Embodiment described above only expresses preferred embodiment of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to the utility model patent scope.It should be pointed out that for the common of this area
Technical scheme that can be as described above for technical staff and design, can also make other it is various it is corresponding change with
And deformation, and all these change and deformation should all belong within the protection domain of the utility model claims.
Claims (1)
1. the cathodic protection set of a kind of re metal electrolyzing, it is characterised in that include sleeve (2), cooling tube (3) and chymoplasm
(4) cooling tube (3), is wound with the sleeve (2), chymoplasm (4) is filled between the sleeve (2) and negative electrode (1), it is described cold
But to manage in (3) and be connected with coolant, the material of the sleeve (2) is heat-resisting cast iron, and the material of the cooling tube (3) is copper alloy,
The material of the chymoplasm (4) is carbon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720552728.4U CN206736373U (en) | 2017-05-18 | 2017-05-18 | A kind of cathodic protection set of re metal electrolyzing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720552728.4U CN206736373U (en) | 2017-05-18 | 2017-05-18 | A kind of cathodic protection set of re metal electrolyzing |
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| CN206736373U true CN206736373U (en) | 2017-12-12 |
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| CN201720552728.4U Active CN206736373U (en) | 2017-05-18 | 2017-05-18 | A kind of cathodic protection set of re metal electrolyzing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481544A (en) * | 2021-07-07 | 2021-10-08 | 西安建筑科技大学 | Fused salt non-electrolytic infiltration local treatment method for prolonging service life of tungsten and molybdenum cathodes of rare earth fused salt electrode |
-
2017
- 2017-05-18 CN CN201720552728.4U patent/CN206736373U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481544A (en) * | 2021-07-07 | 2021-10-08 | 西安建筑科技大学 | Fused salt non-electrolytic infiltration local treatment method for prolonging service life of tungsten and molybdenum cathodes of rare earth fused salt electrode |
| CN113481544B (en) * | 2021-07-07 | 2022-06-03 | 西安建筑科技大学 | Fused salt non-electrolytic infiltration local treatment method for prolonging service life of tungsten and molybdenum cathodes of rare earth fused salt electrode |
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Address after: 341214 xianrenpi community, Huangbu Town, Shangyou County, Ganzhou City, Jiangxi Province Patentee after: Ganzhou Chenguang Rare Earths New Material Shares Co.,Ltd. Address before: 341214 xianrenpi community, Huangbu Town, Shangyou County, Ganzhou City, Jiangxi Province Patentee before: GANZHOU CHEN GUANG RARE EARTHS NEW MATERIAL SHARES Co.,Ltd. |