CN108179444A - A kind of construction technology of 10KA grades of rare earth electrolysis cell - Google Patents
A kind of construction technology of 10KA grades of rare earth electrolysis cell Download PDFInfo
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- CN108179444A CN108179444A CN201810009975.9A CN201810009975A CN108179444A CN 108179444 A CN108179444 A CN 108179444A CN 201810009975 A CN201810009975 A CN 201810009975A CN 108179444 A CN108179444 A CN 108179444A
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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
- C25C7/005—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells of cells for the electrolysis of melts
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
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- 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
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Abstract
The invention discloses a kind of construction technologies of 10KA grades of rare earth electrolysis cell, include the following steps：Step 1, the inner wall laying insulating layer in groove body shell；Step 2 is laid with the first flame retardant coating in the top of insulating layer, and the first metallic sheath is placed in the top of the first flame retardant coating；Step 3 places the second metallic sheath in the first metallic sheath；Step 4 places electrolytic cell in the second metallic sheath；Step 5 is laid with corundum washer at the notch of electrolytic cell；Step 6 installs furnace table surface at the top of electrolytic cell, and anode is fixedly mounted on furnace table surface；Step 7, after bottom of electrolytic tank installs crucible.It is firm that the construction technology of the electrolytic cell of the present invention makes the structure of electrolytic cell more fasten, heat preservation and antiseep effect are good, structural stability is strong, electrolytic cell currents are in more than 10KA, have the characteristics that yield is high, low energy consumption, service life is long, raw material consumption is low, high income, solve the problems of existing electrolytic cell.
Description
Technical field
The present invention relates to rare earth electrolysis cell construction applications, more particularly to a kind of construction technology of 10KA grades of rare earth electrolysis cell.
Background technology
Rare earth element has the laudatory title of " industrial vitamin ", is widely used in oil, chemical industry, metallurgy, weaving, ceramics, glass
The fields such as glass, permanent-magnet material.With advances in technology with the continuous breakthrough of application technology, the value of rare earth and its related product will
It can be increasing.
With being constantly progressive for Rare earth metal metallurgy technology, the continuous development and growth of industry, fused salt electrolysis process prepares dilute
The technology of earth metal and alloy also achieves rapid progress.It was mostly electrolysis of fused chloride salt technique before the 1980s,
Electrolytic cell scale is usually in 2000-3000A, and yield is less than 85%, and electricity effect is less than 65%, and a large amount of HCL can be generated in production process
Gas causes environment huge pollution.Fluoric-salt system oxide electrolysis the 1990s technique gradually develops, electrolytic cell rule
Mould is mostly 4000-6000A, and rare-earth yield is more than 92%, and 70% or so, problem of environmental pollution is improved current efficiency.
To improve electrolytic cell production capacity, existing rare earth electrolysis cell of the electric current at 10KA grades in the country, single 9 ton/month of furnace output, raw material on the basis of this
Unit consumption 1.22, service life 9 months, 10000 KWhs/ton of power consumption, rare-earth yield 94%, but there are still single slot yield is small, yield is low,
The shortcomings of raw material consumption is high, service life is short, high energy consumption and labor intensity are big.
Invention content
The goal of the invention of the present invention is：In view of the above problems, a kind of applying for 10KA grades of rare earth electrolysis cell is provided
Work technique, to solve the problems of existing electrolytic cell.
The technical solution adopted by the present invention is as follows：A kind of construction technology of 10KA grades of rare earth electrolysis cell, which is characterized in that packet
Include following steps：
Step 1 takes pretreated groove body shell, is laid with insulating brick in the inner wall of groove body shell and is wanted with being formed to meet to design
The insulating layer asked, it is desirable that be staggered gap between every layer of insulating brick up and down；
Step 2 is laid with the first flame retardant coating in the top of insulating layer, and the first metallic sheath is placed in the top of the first flame retardant coating, it is desirable that
It is in close contact between first metallic sheath and the first flame retardant coating；
Step 3 places the second metallic sheath in the first metallic sheath, and the second fire resisting is laid between the first metallic sheath and the second metallic sheath
Layer is with the gap between filling, it is desirable that the second flame retardant coating and the close contact of the first metallic sheath and the second metallic sheath；
Step 4 places electrolytic cell in the second metallic sheath, and anti-leakage layer is laid between electrolytic cell and the second metallic sheath to fill that
Gap between this, it is desirable that anti-leakage layer is in close contact with electrolytic cell and the second metallic sheath；
Step 5 is laid with corundum washer at the notch of electrolytic cell, then makees strip of paper used for sealing to the surface of anti-leakage layer with fused salt and waterglass
Processing, to prevent high-temperature oxydation；
Step 6 installs furnace table surface at the top of electrolytic cell, connects furnace table surface cooling water recirculation system, furnace table surface and anode electricity
Connection, anode and cathode are respectively placed in electrolytic cell, wherein, anode is fixedly mounted on furnace table surface and realizes electrical connection, cloudy
Pole cuttage is electrically connected in electrolytic cell and with cathode；
Step 7, after bottom of electrolytic tank installs crucible.
Further, in step 1, before insulating brick is laid with, first one layer of fiber insulation layer is laid in the inner wall of groove body shell.
Further, in step 2, before the first flame retardant coating is laid with, thermal insulation layer is first laid on insulating layer, then re-lays the
One flame retardant coating, wherein, four corners that the upper surface of thermal insulation layer is contacted with the first flame retardant coating distinguish a pre-buried exhaust pipe.
Further, in step 3, pre-buried one of the corner difference in the bottom in the first metallic sheath and the second metallic sheath four
Exhaust pipe.
Preferably, anti-leakage layer is cathode paste layer, the first flame retardant coating and the second flame retardant coating are made of magnesia material.
Further, in magnesia material, it is desirable that the mass fraction for the magnesia that magnesia uses is not less than 90%, granularity 1-
3mm, wherein the magnesia particle less than 1mm is no more than 5mas%.
Further, magnesia material by magnesia, fire clay and waterglass according to weight percent 10:1:1 ratio is mixed.
Further, the construction temperature of cathode paste is 110 ± 10 DEG C, it is desirable that the expansion rate of cathode paste is less than 0.5%, antiseep
The levelness of layer is not more than 4mm/m.
Preferably, the electrolytic cell is graphite cuvette, the anode is graphite anode, and the cathode is parallel upper plug type tungsten
Cathode, the size of tungsten cathode is φ 50- φ 70mm, and the crucible is tungsten composite crucible.
Preferably, first metallic sheath and the second metallic sheath are made of steel.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, tungsten composite crucible compares existing spliced half arc tungsten crucible, and total amount is light by 20%, and at low cost 50%, during use
The problems such as protuberance influences to come out of the stove and operate in the middle part of existing spliced half arc tungsten crucible can be effectively avoided, meanwhile, table conduction side
The improvement of formula simplifies graphite anode fastening means, reduces labor intensity；
2nd, anti-leakage layer is for the first time using the cathode paste for receiving expansion rate ＜ 0.5%, when reducing spliced graphite cuvette coking is pasted around
The expansion of splicing seams avoids molten salt system leakage, has saved raw material, meanwhile, ruggedized construction adds magnesia using double steel bushings for the first time
What material was reinforced builds slot mode, makes trough body structure more firm, corrosion resistance is enhanced, and avoids the generation of wears groove accident；
3rd, cathode overstriking thus reduces current density, it is suppressed that molten salt system table temperature is excessively high, not easily-controllable to φ 50- φ 70mm
The problems such as processed, avoids the influence to quality, and cathode service life extends 50%, and the construction technology of electrolytic cell of the invention makes electricity
It is firm that the structure of solution slot more fastens, and heat preservation and antiseep effect are good, and structural stability is good, electrolytic cell currents in more than 10KA,
Have the characteristics that yield is high, low energy consumption, service life is long, raw material consumption is low, high income, solve present in existing electrolytic cell
Problem.
Description of the drawings
Fig. 1 is a kind of front cross-sectional structure diagram of 10KA grades of rare earth electrolysis cells of the present invention；
Fig. 2 is the rare earth electrolysis cell overlooking the structure diagram of the present invention；
Fig. 3 is the furnace table surface schematic cross-sectional view of the present invention；
Fig. 4 is the long crucible structure schematic diagram of the present invention；
Fig. 5 is the structure diagram of Section A-A in Fig. 4；
Fig. 6 is the cell construction schematic diagram of the present invention；
Fig. 7 is the structure diagram of section B-B in Fig. 6.
It is marked in figure：1 is groove body shell, and 2 be fiber insulation layer, and 3 be insulating layer, and 4 be thermal insulation layer, and 5 be the first flame retardant coating,
6 be the first metallic sheath, and 7 be the second metallic sheath, and 8 be anti-leakage layer, and 9 be electrolytic cell, and 10 be crucible, and 11 be anode, and 12 be cathode,
13 be corundum washer, and 14 be furnace table surface, and 15 be the second flame retardant coating.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figures 1 to 6, as shown in Figures 1 to 7, a kind of 10KA grades of Rare Earth Electrolysis slot structure, including groove body shell 1,
The inner wall of groove body shell 1 is equipped with insulating layer 3, and the top of insulating layer 3 is placed with the first metallic sheath 6,3 and first metal of insulating layer
The first flame retardant coating 5 is connected between set 6, the second metallic sheath 7, the second metallic sheath 7 and the first metal are placed in the first metallic sheath 6
The second flame retardant coating 14 is filled between set 6, electrolytic cell 9 is placed in the second metallic sheath 7, between the second metallic sheath 7 and electrolytic cell 9
Anti-leakage layer 8 is connected, the bottom of electrolytic cell 9 is equipped with crucible 10, and the top of electrolytic cell 9 is connect with furnace table surface 14, in electrolytic cell 9
Anode 11 and cathode 12 are placed with, anode 11 is fixed on furnace table surface 14 and passes through furnace table surface 14 to be electrically connected with anode, cathode 12
It inserts in electrolytic cell 9, and cathode 12 is electrically connected with cathode.
In above-mentioned, insulating layer 3 can be piled up by insulating brick, such as can be diatom ooze insulating brick, the first metallic sheath 6
Manganese alloy system, steel, cast iron etc. may be used with the second metallic sheath 7, still, since the working environment of electrolytic cell 9 is in urgency
The environment of cold anxious heat, the deformation performance that manganese alloy and cast iron are shown in such circumstances is poor, is also easy to produce crackle and crumbles, because
This, preferably steel material；The fire resistings such as magnesia, cement, silt filling material may be used in first flame retardant coating 5 and the second flame retardant coating 15
Material is formed, and in actual use, since the refractory materials such as cement, silt are easy to crack under high temperature and rapid cooling, heat-insulated effect
Fruit is bad, and tautness cannot reach design requirement, and magnesia is not in not only these problems, in compacting process, tightly
Density is good, can reach design requirement, therefore, 5 He of the first flame retardant coating is formed in the present invention, it is preferred to be used as using magnesia
The refractory material of second flame retardant coating 15；Anti-leakage layer 8 can also be filled using cold ramming paste material, in order to form structure more
Stable, more closely knit, ne-leakage hole anti-leakage layer 8, anti-leakage layer 8 are preferably used as antiseep packing material using cathode paste.
It further says, the mass fraction of the magnesia used in magnesia is not less than 90%, granularity 1-3mm, wherein being less than
The magnesia particle of 1mm is no more than 5mas%, in order to preferably give play to the technique effect of magnesia, the first flame retardant coating 5 and the second fire resisting
Layer 15 uses the magnesia material based on magnesia to be formed, wherein, magnesia material is by magnesia, fire clay and waterglass according to weight percent
10:1:1 ratio is mixed, simultaneously as magnesia can discharge vapor and other gases at high temperature, for the ease of row
Gas, when being laid with magnesia material, corner pre-buried one exhaust pipe for exhaust of difference of bottom four in the first metallic sheath（Figure
In be not drawn into）.In order to improve heat insulation and prevent high temperature from leaking, one layer of tiling is heat-insulated between the first flame retardant coating 5 and insulating layer 3
Layer 4, thermal insulation layer 4 can be used refractory brick and be built into, correspondingly, in order to discharge the gas in the first flame retardant coating 5, the upper end of thermal insulation layer 4
Four corners that face is in contact with the first flame retardant coating 5 are embedded with an exhaust pipe respectively, to ensure the tight ness rating of total.
It further says, since cathode paste can expand simultaneously coking, and then generate gas under the high temperature conditions, in order to discharge gas
Body, corner pre-buried one exhaust pipe for exhaust of difference of bottom four in the second metallic sheath 7, i.e., arranged by exhaust pipe
Go out the gas in anti-leakage layer 8.
In above-mentioned, exhaust pipe can be plastic tube or metal tube, for example, when exhaust pipe is plastic tube, plastics
Pipe softens and forms exhaust passage under the high temperature conditions, in favor of cathode paste or magnesia material expanded exhaust；When exhaust pipe is gold
When belonging to pipe, since metal tube fusing point is higher, need that multiple through-holes is set to carry out auxiliary exhaust with the week of metal tube.
Further say, in order to further improve antiseep and heat insulation effect, the inner wall and insulating layer 3 of groove body shell 1 it
Between be equipped with fiber insulation layer 2, fiber insulation layer 2 be laid with mounted on groove body shell 1 inner wall on.The electrolytic cell 9 is preferably
Graphite cuvette, the anode 11 then be preferably graphite anode, the cathode 12 be parallel upper plug type tungsten cathode, the size of tungsten cathode
It is required that for φ 50- φ 70mm.First metallic sheath, 6 and second metallic sheath 7 is made of steel, at the notch of electrolytic cell 9
It is equipped with corundum washer 13.
The construction technology of the Rare Earth Electrolysis slot structure of the present invention includes the following steps：
Step 1, the groove body shell 1 for learning from else's experience pretreated are laid with insulating brick in the inner wall of groove body shell 1 and are wanted with being formed to meet to design
The insulating layer 3 asked, it is desirable that be staggered gap between every layer of insulating brick up and down；
Step 2 is laid with the first flame retardant coating 5 in the top of insulating layer 3, and the first metallic sheath 6 is placed in the top of the first flame retardant coating 5,
It is required that it is in close contact between the first metallic sheath 6 and the first flame retardant coating 5；
Step 3 places the second metallic sheath 7 in the first metallic sheath 6, and second is laid between the first metallic sheath 6 and the second metallic sheath 7
Gap of the flame retardant coating 15 between filling, it is desirable that the second flame retardant coating 15 closely connects with the first metallic sheath 6 and the second metallic sheath 7
It touches；
Step 4 places electrolytic cell 9 in the second metallic sheath 7, be laid between 9 and second metallic sheath 7 of electrolytic cell anti-leakage layer 8 with
Gap between filling, it is desirable that anti-leakage layer 8 is in close contact with electrolytic cell 9 and the second metallic sheath 7；
Step 5 is laid with corundum washer 13 at the notch of electrolytic cell 9, then the surface of anti-leakage layer is made with fused salt and waterglass
Strip of paper used for sealing processing, to prevent high-temperature oxydation；
Step 6 installs furnace table surface 14 at the top of electrolytic cell 9, connects the cooling water recirculation system of furnace table surface 14, furnace table surface 14
It is electrically connected with anode, anode 11 and cathode 12 is respectively placed in electrolytic cell 9, wherein, anode 11 is fixedly mounted on furnace table surface 14
It goes up and realizes electrical connection, 12 cuttage of cathode is electrically connected in electrolytic cell 9 and with cathode；
Step 7, after installing crucible in 9 bottom of electrolytic cell.
In above-mentioned construction technology, before insulating brick is laid with, first one layer of fiber insulation layer is laid in the inner wall of groove body shell.
Further, in step 2, before the first flame retardant coating is laid with, thermal insulation layer is first laid on insulating layer, then re-lays the first fire resisting
Layer, wherein, four corners that the upper surface of thermal insulation layer is contacted with the first flame retardant coating distinguish a pre-buried exhaust pipe.Correspondingly,
In step 3, the corner of the bottom in the first metallic sheath and the second metallic sheath four distinguishes a pre-buried exhaust pipe.Anti-leakage layer
For cathode paste layer, the construction temperature of cathode paste is 110 ± 10 DEG C, it is desirable that the expansion rate of cathode paste is less than 0.5%, anti-leakage layer
Levelness is not more than 4mm/m.
In order to which the present invention is better described, specific embodiment is exemplified below to be illustrated.
Embodiment：A kind of 10KA grades of Rare Earth Electrolysis slot structure, construction technology include the following steps：
Step 1, the groove body shell 1 for learning from else's experience pretreated are first laid with the silicic acid that a thickness is 2-4cm in the inner wall of groove body shell 1
Aluminum fiber mat（That is fiber insulation layer 2）, then with diatom ooze insulating brick（230 × 115 × 65mm of reference specification）Block base thickness is 30-
35cm, side thickness are the insulating layer 3 of 20-25cm, it is desirable that be staggered gap between every layer of brick；
Step 2 uses clay refractory brick on the end face of insulating layer 3（230 × 115 × 65mm of reference specification）The thickness that tiles is
The thermal insulation layer 4 of 6.5cm, it is desirable that be staggered gap between every layer of brick, the magnesium for the one thickness 5-10cm of compacting that then tiles on thermal insulation layer 4
Sand material to form the first flame retardant coating 5, meanwhile, four corners that the upper surface of thermal insulation layer 4 is in contact with the first flame retardant coating 5 difference
It is embedded with the pvc pipe of 1 φ 25mm（That is exhaust pipe）, then place the first steel bushing on the first flame retardant coating 5（That is the first metallic sheath
6）, it is desirable that magnesia material fills up the gap between the first steel bushing and thermal insulation layer 4 and insulating layer 3, wherein, the pressure of air compressor machine during compacting
P≥0.5-1.0MPa；
Step 3, the bottom tiling in the first steel bushing are compacted the magnesia material of a thickness 5-10cm to form the second flame retardant coating 15, and
It is levelling（Levelness≤4mm/m）, meanwhile, the corner of bottom four in the first steel bushing distinguishes the PVC of pre-buried 1 φ 25mm
Pipe, then places the second steel bushing（That is the second metallic sheath 7）, then between the first steel bushing of magnesia material padding and compacting and the second steel bushing
Gap, wherein, pressure P >=0.5-1.0MPa of air compressor machine during compacting：
Step 4, the bottom tiling in the second steel bushing are compacted the cathode paste of a thickness 5-10cm（With reference to trade mark GXCL）To be formed
Anti-leakage layer 8, and it is levelling（Levelness≤4mm/m）, meanwhile, pre-buried 1 of the corner difference in bottom four in the second steel bushing
The pvc pipe of φ 25mm, then places graphite cuvette（That is electrolytic cell 9）, the gap between graphite cuvette and the second steel bushing is filled out with cathode paste
Compression is filled, wherein, pressure P >=0.5-1.0MPa of air compressor machine during compacting, cathode paste construction temperature is 110 ± 10 DEG C；
Step 5 is laid with corundum washer 13 at the notch of graphite cuvette, then the surface of anti-leakage layer is sealed with fused salt and waterglass
Skin processing, to prevent high-temperature oxydation；
Step 6 installs furnace table surface 14 at the top of graphite cuvette, connects the cooling water recirculation system of furnace table surface 14, furnace table surface with
14 anodes are electrically connected, by graphite anode（That is anode 11）And tungsten cathode（That is cathode 12）It is respectively placed in graphite cuvette, wherein, graphite
Anode is fixedly mounted on furnace table surface 14 and realizes electrical connection, and tungsten cathode is inserted in graphite cuvette and is electrically connected with cathode；
Step 7 installs tungsten composite crucible in graphite trench bottom（That is crucible 10）Afterwards.
In above-mentioned, magnesia material is by magnesia, fire clay and waterglass according to weight percent 10:1:1 ratio is mixed,
The mass fraction of the magnesia used in magnesia is not less than 90%, granularity 1-3mm, wherein the magnesia particle less than 1mm is no more than
5mas%, a diameter of φ 50- φ 70mm of tungsten cathode.
The main creation data for the electrolytic cell that above-described embodiment obtains compares with existing electrolytic cell, obtains such as 1 institute of table
Show:
Table 1 is improved front and rear main creation data and is compared
Can be obtained by upper table 1, by the obtained electrolytic cell of electrolytic cell construction technology of the present invention have yield is high, low energy consumption,
The features such as service life is long, raw material consumption is low, high income.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of construction technology of 10KA grades of rare earth electrolysis cell, which is characterized in that include the following steps：
Step 1 takes pretreated groove body shell, is laid with insulating brick in the inner wall of groove body shell and is wanted with being formed to meet to design
The insulating layer asked, it is desirable that be staggered gap between every layer of insulating brick up and down；
Step 2 is laid with the first flame retardant coating in the top of insulating layer, and the first metallic sheath is placed in the top of the first flame retardant coating, it is desirable that
It is in close contact between first metallic sheath and the first flame retardant coating；
Step 3 places the second metallic sheath in the first metallic sheath, and the second fire resisting is laid between the first metallic sheath and the second metallic sheath
Layer is with the gap between filling, it is desirable that the second flame retardant coating and the close contact of the first metallic sheath and the second metallic sheath；
Step 4 places electrolytic cell in the second metallic sheath, and anti-leakage layer is laid between electrolytic cell and the second metallic sheath to fill that
Gap between this, it is desirable that anti-leakage layer is in close contact with electrolytic cell and the second metallic sheath；
Step 5 is laid with corundum washer at the notch of electrolytic cell, then makees strip of paper used for sealing to the surface of anti-leakage layer with fused salt and waterglass
Processing, to prevent high-temperature oxydation；
Step 6 installs furnace table surface at the top of electrolytic cell, connects furnace table surface cooling water recirculation system, furnace table surface and anode electricity
Connection, anode and cathode are respectively placed in electrolytic cell, wherein, anode is fixedly mounted on furnace table surface and realizes electrical connection, cloudy
Pole inserts in electrolytic cell and is electrically connected with cathode；
Step 7, after bottom of electrolytic tank installs crucible.
2. the construction technology of 10KA grades of rare earth electrolysis cell as described in claim 1, which is characterized in that in step 1, protected being laid with
Before warm brick, first one layer of fiber insulation layer is laid in the inner wall of groove body shell.
3. the construction technology of 10KA grades of rare earth electrolysis cell as described in claim 1, which is characterized in that in step 2, be laid with the
Before one flame retardant coating, first thermal insulation layer is laid on insulating layer, then re-lay the first flame retardant coating, wherein, the upper surface of thermal insulation layer with
Four corners of the first flame retardant coating contact distinguish a pre-buried exhaust pipe.
4. the construction technology of 10KA grades of rare earth electrolysis cell as described in claim 1, which is characterized in that in step 3, the first gold medal
The corner of bottom four belonged in set and the second metallic sheath distinguishes a pre-buried exhaust pipe.
5. the construction technology of 10KA grades of rare earth electrolysis cell as described in claim 1, which is characterized in that anti-leakage layer is cathode paste
Layer, the first flame retardant coating and the second flame retardant coating are made of magnesia material.
6. the construction technology of 10KA grades of rare earth electrolysis cell as claimed in claim 5, which is characterized in that in magnesia material, it is desirable that
The mass fraction for the magnesia that magnesia uses is not less than 90%, granularity 1-3mm, wherein the magnesia particle less than 1mm is no more than
5mas%。
7. the construction technology of 10KA grades of rare earth electrolysis cell as claimed in claim 6, which is characterized in that magnesia material is by magnesia, resistance to
Chamotte and waterglass are according to weight percent 10:1:1 ratio is mixed.
8. the construction technology of 10KA grades of rare earth electrolysis cell as claimed in claim 5, which is characterized in that the construction temperature of cathode paste
It it is 110 ± 10 DEG C, it is desirable that the expansion rate of cathode paste is less than 0.5%, and the levelness of anti-leakage layer is not more than 4mm/m.
9. the construction technology of 10KA grades of rare earth electrolysis cell as described in claim 1, which is characterized in that the electrolytic cell is graphite
Slot, the anode are graphite anode, and the cathode is parallel upper plug type tungsten cathode, and the size of tungsten cathode is φ 50- φ 70mm,
The crucible is tungsten composite crucible.
10. the construction technology of 10KA grades of rare earth electrolysis cell as described in claim 1, which is characterized in that first metallic sheath
It is made with the second metallic sheath of steel.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750326A (en) * | 2019-03-25 | 2019-05-14 | 江苏金石稀土有限公司 | A method of improving graphite crucible service life in molten-salt electrolysis reaction |
| CN109797408A (en) * | 2019-04-01 | 2019-05-24 | 江西金世纪新材料股份有限公司 | A kind of electrolytic furnace |
| CN115074786A (en) * | 2022-07-06 | 2022-09-20 | 中国科学院金属研究所 | Anti-seepage material for rare earth electrolytic cell, preparation method of anti-seepage material and rare earth electrolytic cell |
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| CN115074786B (en) * | 2022-07-06 | 2024-02-20 | 中国科学院金属研究所 | Seepage-proofing material for rare earth electrolytic tank, preparation method of seepage-proofing material and rare earth electrolytic tank |
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Address after: 615600 Rare Earth Industrial Park, Fuxing Town, Mianning County, Liangshan Yi Autonomous Prefecture, Sichuan Province Patentee after: Zhongxi (Liangshan) Rare Earth Co.,Ltd. Address before: 615600 Rare Earth Industrial Park, Fuxing Town, Mianning County, Liangshan Yi Autonomous Prefecture, Sichuan Province Patentee before: SICHUAN JCC RARE EARTH METALS CO.,LTD. |