CN207877882U - A kind of Rare Earth Electrolysis slot structure - Google Patents
A kind of Rare Earth Electrolysis slot structure Download PDFInfo
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- CN207877882U CN207877882U CN201820015532.6U CN201820015532U CN207877882U CN 207877882 U CN207877882 U CN 207877882U CN 201820015532 U CN201820015532 U CN 201820015532U CN 207877882 U CN207877882 U CN 207877882U
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Abstract
The utility model discloses a kind of Rare Earth Electrolysis slot structures, including groove body shell, the inner wall of groove body shell is equipped with insulating layer, the first metallic sheath is placed with above insulating layer, the first flame retardant coating is connected between insulating layer and the first metallic sheath, the second metallic sheath is placed in first metallic sheath, the second flame retardant coating is filled between second metallic sheath and the first metallic sheath, it is placed with electrolytic cell in second metallic sheath, anti-leakage layer is connected between second metallic sheath and electrolytic cell, the bottom of electrolytic cell is equipped with crucible, the top of electrolytic cell is connect with furnace table surface, anode and cathode is placed in electrolytic cell, anode is fixed on furnace table surface and is electrically connected with anode by furnace table surface, cathode cuttage is in electrolytic cell, and cathode is electrically connected with cathode.The cell construction of the utility model has the characteristics that yield is high, low energy consumption, service life is long, raw material consumption is low, high income, efficiently solves the problems of existing electrolytic cell more than electric current 10KA.
Description
Technical field
The utility model is related to rare earth electrolysis cell construction applications, more particularly to a kind of to be used for fluoric-salt system oxide electrolysis system
The cell construction of standby rare earth metal.
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%, will produce a large amount of HCL in production process
Gas causes huge pollution to environment.Fluoric-salt system oxide electrolysis the 1990s technique gradually develops, electrolytic cell rule
Mould is mostly 4000-6000A, and rare-earth yield is 92% or more, and 70% or so, problem of environmental pollution is improved current efficiency.
To improve electrolytic cell production capacity on the basis of this, the country has rare earth electrolysis cell of the electric current at 10KA grades, 9 ton/month of single furnace output, raw material
Unit consumption 1.22, service life 9 months, 10000 KWhs/ton of power consumption, rare-earth yield 94%, but that 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.
Utility model content
The goal of the invention of the utility model is：In view of the above problems, a kind of Rare Earth Electrolysis slot structure is provided, with
Solve the problems of existing electrolytic cell.
The technical solution adopted in the utility model is as follows：A kind of Rare Earth Electrolysis slot structure, including groove body shell, feature exist
In the inner wall of groove body shell is equipped with insulating layer, and the first metallic sheath, insulating layer and the first metallic sheath are placed with above insulating layer
Between be connected with the first flame retardant coating, the second metallic sheath is placed in the first metallic sheath, between the second metallic sheath and the first metallic sheath
Filled with the second flame retardant coating, it is placed with electrolytic cell in the second metallic sheath, anti-leakage layer is connected between the second metallic sheath and electrolytic cell,
The bottom of electrolytic cell is equipped with crucible, and the top of electrolytic cell is connect with furnace table surface, and anode and cathode, anode are placed in electrolytic cell
It is fixed on furnace table surface and is electrically connected with anode by furnace table surface, cathode cuttage is in electrolytic cell, and cathode is electrically connected with cathode.
Further, it is vented for the ease of the second flame retardant coating, the corner of bottom four in the first metallic sheath is embedded with respectively
Exhaust pipe, the gas that the exhaust pipe is used to be discharged in the second flame retardant coating.
Further, it is vented for the ease of anti-leakage layer, the row of being embedded with respectively of the corner of bottom four in the second metallic sheath
Tracheae, the gas that the exhaust pipe is used to be discharged in anti-leakage layer.
Further, tiling has thermal insulation layer between the first flame retardant coating and insulating layer.
Further, four corners that the upper surface of thermal insulation layer is in contact with the first flame retardant coating are embedded with exhaust pipe respectively,
The gas that the exhaust pipe is used to be discharged in the first flame retardant coating.
Further, fiber insulation layer is equipped between the inner wall and insulating layer of groove body shell, fiber insulation layer laying is mounted on
On the inner wall of groove body shell.
Further, the crucible is tungsten composite crucible, and the furnace table surface is connected with cooling water recirculation system.
Further, the anti-leakage layer is cathode paste layer.
Further, the electrolytic cell is graphite cuvette, and the anode is graphite anode, and the cathode is that parallel upper plug type tungsten is cloudy
The size of pole, tungsten cathode is φ 50- φ 70mm.
Further, first metallic sheath and the second metallic sheath are all made of steel and are made, and are equipped at the notch of electrolytic cell
Corundum washer.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：
1, tungsten composite crucible compares existing spliced half arc tungsten crucible, and total amount is light by 20%, and at low cost 50%, it used
Cheng Zhongneng effectively avoids 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；
2, conductive structure uses furnace table surface conductive for the first time, the mode of water cooling decompression, effectively reduces tank voltage, energy consumption drop
Low 20%；
3, anti-leakage layer reduces spliced graphite cuvette and pastes knot around for the first time using the cathode paste for receiving expansion rate ＜ 0.5%
The expansion of splicing seams when burnt avoids molten salt system leakage, has saved raw material；
4, ruggedized construction adds what magnesia material reinforced to build slot mode using double steel bushings for the first time, keeps trough body structure more firm, resists
Corrosive nature is enhanced, and the generation of wears groove accident is avoided；
5, cathode overstriking thus reduces current density, it is suppressed that molten salt system table temperature is excessively high, no to φ 50- φ 70mm
The problems such as easy to control, the influence to quality is avoided, cathode service life extends 50%；
6, the improvement of table electrically conducting manner simplifies graphite anode fastening means, reduces labor intensity；
7, electrolytic cell currents are in 10KA or more, with yield is high, low energy consumption, service life is long, raw material consumption is low, high income
The features such as.
Description of the drawings
Fig. 1 is a kind of front cross-sectional structural schematic diagram of rare earth electrolysis cell of the utility model；
Fig. 2 is the rare earth electrolysis cell overlooking structure diagram of the utility model；
Fig. 3 is the furnace table surface schematic cross-sectional view of the utility model；
Fig. 4 is the long crucible structure schematic diagram of the utility model；
Fig. 5 is the structural schematic diagram of Section A-A in Fig. 4；
Fig. 6 is the cell construction schematic diagram of the utility model；
Fig. 7 is the structural schematic 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 implementation mode
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figures 1 to 7, a kind of Rare Earth Electrolysis slot structure, including groove body shell 1, the inner wall of groove body shell 1 are equipped with
The top of insulating layer 3, insulating layer 3 is placed with the first metallic sheath 6, and the first fire resisting is connected between insulating layer 3 and the first metallic sheath 6
Layer 5 is placed with the second metallic sheath 7 in first metallic sheath 6, and the second fire resisting is filled between the second metallic sheath 7 and the first metallic sheath 6
Layer 14 is placed with electrolytic cell 9 in second metallic sheath 7, and anti-leakage layer 8, electrolytic cell 9 are connected between the second metallic sheath 7 and electrolytic cell 9
Bottom crucible 10 is installed, the top of electrolytic cell 9 is connect with furnace table surface 14, and anode 11 and cathode 12 are placed in electrolytic cell 9,
Anode 11 is fixed on furnace table surface 14 and is electrically connected with anode by furnace table surface 14, and 12 cuttage of cathode is in electrolytic cell 9, and cathode
12 are electrically connected with cathode.
Among the above, 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 constituted, 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, in the present invention, it is preferred to use magnesia, which is used as, constitutes the first fire resisting
The refractory material of layer 5 and the second flame retardant coating 15；Anti-leakage layer 8 can also be filled using refractory material, in order to form knot
More stable, more closely knit, ne-leakage hole the anti-leakage layer 8 of structure, anti-leakage layer 8 are preferably used as antiseep using cathode paste and fill material
Material.
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 play 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 constituted, simultaneously as vapor and other gases can be discharged in magnesia at high temperature, is
Convenient for exhaust, when being laid with magnesia material, the corner of bottom four in the first metallic sheath distinguishes pre-buried one and is used for exhaust
Exhaust pipe（It is not drawn into figure）.In order to improve heat insulation and prevent high temperature from leaking, put down between the first flame retardant coating 5 and insulating layer 3
One layer of thermal insulation layer 4 is spread, thermal insulation layer 4 can be used refractory brick and be built into, correspondingly, heat-insulated in order to which the gas in the first flame retardant coating 5 is discharged
Four corners that the upper surface of layer 4 is in contact with the first flame retardant coating 5 are embedded with an exhaust pipe respectively, to ensure total
Tight ness rating.
It further says, since cathode paste can expand simultaneously gum deposit under the high temperature conditions, and then gas is generated, in order to which gas is discharged
Body, the corner of bottom four in the second metallic sheath 7 distinguish pre-buried one for exhaust exhaust pipe, i.e., arranged by exhaust pipe
Go out the gas in anti-leakage layer 8.
Among the above, exhaust pipe can be plastic tube, can also be metal tube, for example, when exhaust pipe is plastic tube, plastics
Pipe softens and is formed 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, needs multiple through-holes are arranged with the week of metal tube and carry out auxiliary exhaust.
Further say, in order to further increase 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 are preferably then graphite anode, and the cathode 12 is parallel upper plug type tungsten cathode, the size of tungsten cathode
It is required that being φ 50- φ 70mm.First metallic sheath, 6 and second metallic sheath 7 is all made of steel and is made, 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 utility model 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 set with being formed to meet
Count desired insulating layer 3, it is desirable that be staggered between every layer of insulating brick gap up and down；
Step 2 is laid with the first flame retardant coating 5 in the top of insulating layer 3, and the first metal is placed in the top of the first flame retardant coating 5
Set 6, it is desirable that be 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, is laid between the first metallic sheath 6 and the second metallic sheath 7
Second flame retardant coating 15 is with the gap between filling, it is desirable that the second flame retardant coating 15 and the first metallic sheath 6 and the second metallic sheath 7 are tight
Contiguity is touched；
Step 4 places electrolytic cell 9 in the second metallic sheath 7, and anti-leakage layer is laid between electrolytic cell 9 and the second metallic sheath 7
8 with the 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 with fused salt and waterglass to the table of anti-leakage layer
Strip of paper used for sealing processing is made in face, 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, table
Face 14 is electrically connected with anode, anode 11 and cathode 12 is respectively placed in electrolytic cell 9, wherein anode 11 is fixedly mounted on table
On face 14 and realize that electrical connection, 12 cuttage of cathode are electrically connected in electrolytic cell 9 and with cathode；
Step 7, after 9 bottom of electrolytic cell installs crucible.
In above-mentioned construction technology, before being laid with insulating brick, first one layer of fiber insulation layer is laid in the inner wall of groove body shell.
Further, in step 2, before being laid with the first flame retardant coating, it is first laid with thermal insulation layer 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
Construction temperature for cathode paste layer, cathode paste is 80-100 DEG C, it is desirable that the expansion rate of cathode paste is less than 0.5%, the water of anti-leakage layer
Pingdu is not more than 4mm/m.
In order to which the utility model is better described, specific embodiment is exemplified below to be illustrated.
Embodiment：A kind of 10KV 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, it is 2-4cm's to be first laid with a thickness in the inner wall of groove body shell 1
Alumina silicate fiber felt（That is fiber insulation layer 2）, then with diatom ooze insulating brick（230 × 115 × 65mm of reference specification）Building 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）Tile a thickness
For the thermal insulation layer 4 of 6.5cm, it is desirable that be staggered gap between every layer of brick, then the one thickness 5-10cm of tiling compacting on thermal insulation layer 4
Magnesia material to form the first flame retardant coating 5, meanwhile, the punishment of four corners that the upper surface of thermal insulation layer 4 is in contact with the first flame retardant coating 5
It is not 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 when 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 pre-buried 1 φ 25mm's
Then pvc pipe places the second steel bushing（That is the second metallic sheath 7）, then with the first steel bushing of magnesia material padding and compacting and the second steel bushing it
Between gap, wherein pressure P >=0.5-1.0MPa of air compressor machine when 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）With
Anti-leakage layer 8 is formed, and levelling（Levelness≤4mm/m）, meanwhile, the corner difference of bottom four in the second steel bushing is pre-buried
The pvc pipe of 1 φ 25mm, then places graphite cuvette（That is electrolytic cell 9）, the gap cathode paste between graphite cuvette and the second steel bushing
Filling compression, wherein pressure P >=0.5-1.0MPa of air compressor machine when compacting, cathode paste construction temperature are 90 ± 10 DEG C；
Step 5 is laid with corundum washer 13 at the notch of graphite cuvette, then with fused salt and waterglass to the surface of anti-leakage layer
Make strip of paper used for sealing 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, table
Face is electrically connected with 14 anodes, 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 that electrical connection, tungsten cathode cuttage are electrically connected in graphite cuvette and with cathode；
Step 7 installs tungsten composite crucible in graphite trench bottom（That is crucible 10）Afterwards.
Among the above, magnesia material 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 back main creation data and is compared
It can be obtained by upper table 1, the cell construction of the utility model is high with yield, low energy consumption, service life is long, former
The features such as material list consumption low, high income.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (10)
1. a kind of Rare Earth Electrolysis slot structure, including groove body shell（1）, which is characterized in that groove body shell（1）Inner wall be equipped with guarantor
Warm layer（3）, insulating layer（3）Top be placed with the first metallic sheath（6）, insulating layer（3）With the first metallic sheath（6）Between be connected with
First flame retardant coating（5）, the first metallic sheath（6）Inside it is placed with the second metallic sheath（7）, the second metallic sheath（7）With the first metallic sheath（6）
Between be filled with the second flame retardant coating（15）, the second metallic sheath（7）Inside it is placed with electrolytic cell（9）, the second metallic sheath（7）And electrolytic cell
（9）Between connect anti-leakage layer（8）, electrolytic cell（9）Bottom crucible is installed（10）, electrolytic cell（9）Top and furnace table surface
（14）Connection, electrolytic cell（9）Inside it is placed with anode（11）And cathode（12）, anode（11）It is fixed on furnace table surface（14）It goes up and passes through
Furnace table surface（14）It is electrically connected with anode, cathode（12）Cuttage is in electrolytic cell（9）It is interior, and cathode（12）It is electrically connected with cathode.
2. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that the first metallic sheath（6）The interior angle of bottom four
The place of falling is embedded with exhaust pipe respectively, and the exhaust pipe is for being discharged the second flame retardant coating（15）Interior gas.
3. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that the second metallic sheath（7）The interior angle of bottom four
The place of falling is embedded with exhaust pipe respectively, and the exhaust pipe is for being discharged anti-leakage layer（8）Interior gas.
4. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that the first flame retardant coating（5）With insulating layer（3）Between
Tiling has thermal insulation layer（4）.
5. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that thermal insulation layer（4）Upper surface and the first fire resisting
Layer（5）Four corners being in contact are embedded with exhaust pipe respectively, and the exhaust pipe is for being discharged the first flame retardant coating（5）Interior gas
Body.
6. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that groove body shell（1）Inner wall and insulating layer（3）
Between be equipped with fiber insulation layer（2）, fiber insulation layer（2）It is laid with and is mounted on groove body shell（1）Inner wall on.
7. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that the crucible（10）For tungsten composite crucible,
The furnace table surface（14）It is connected with cooling water recirculation system.
8. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that the anti-leakage layer（8）For cathode paste layer.
9. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that the electrolytic cell（9）For graphite cuvette, the sun
Pole（11）For graphite anode, the cathode（12）Size for parallel upper plug type tungsten cathode, tungsten cathode is φ 50- φ 70mm.
10. Rare Earth Electrolysis slot structure as described in claim 1, which is characterized in that first metallic sheath（6）With the second metal
Set（7）It is all made of steel to be made, electrolytic cell（9）Notch at be equipped with corundum washer（13）.
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| CN201820015532.6U CN207877882U (en) | 2018-01-05 | 2018-01-05 | A kind of Rare Earth Electrolysis slot structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706483A (en) * | 2019-03-19 | 2019-05-03 | 中国科学院青海盐湖研究所 | Large capacity Rare Earth Electrolysis slot device |
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2018
- 2018-01-05 CN CN201820015532.6U patent/CN207877882U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706483A (en) * | 2019-03-19 | 2019-05-03 | 中国科学院青海盐湖研究所 | Large capacity Rare Earth Electrolysis slot device |
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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. |