CN213652672U - Automatic collecting device for metal lithium electrolytic cell - Google Patents
Automatic collecting device for metal lithium electrolytic cell Download PDFInfo
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- CN213652672U CN213652672U CN202022503391.2U CN202022503391U CN213652672U CN 213652672 U CN213652672 U CN 213652672U CN 202022503391 U CN202022503391 U CN 202022503391U CN 213652672 U CN213652672 U CN 213652672U
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Abstract
The utility model relates to a collection device especially relates to a metal lithium electrolysis trough automatic collection device of lithium electrolysis trough technical field. The lithium extraction device comprises a screen mesh, wherein an inner partition plate is arranged at the top of the screen mesh, a baffle plate is arranged outside the inner partition plate, the top of the inner partition plate is connected with the top of the baffle plate through a steel plate, a lithium extraction cylinder is arranged above one side of the steel plate, a lithium outlet is arranged on an upper middle shell of the lithium extraction cylinder and is connected with one end of an inclined long pipe, the other end of the inclined long pipe is connected with a lithium collection device, and an outlet pipe at the bottom of the lithium collection device is connected. The utility model has the advantages of effect: the utility model discloses it is rational in infrastructure, realized the automatic derivation ingot casting of metal lithium, avoided artifical manual lithium in-process metal lithium and air oxygen and nitrogen gas contact, made metal lithium receive the pollution, still reduced intensity of labour simultaneously and improved operational environment, reduced the probability that the staff was scalded by the high temperature fused salt in operation process.
Description
Technical Field
The utility model relates to a collection device especially relates to a metal lithium electrolysis trough automatic collection device of lithium electrolysis trough technical field.
Background
The existing methods for producing the metal lithium comprise a molten salt electrolysis method and a vacuum thermal reduction method, but the thermal reduction method has high reaction temperature, difficult reaction control and higher cost and is still in a laboratory research stage, so the project selects an industrialized molten salt electrolysis method. Namely, lithium chloride-potassium chloride is taken as electrolyte, and the lithium metal is produced by electrolysis at the temperature of 400-450 ℃.
Lithium reacts in the cell as follows:
cathode:
anode:
an electrolytic cell:
the traditional molten salt electrolysis method for producing the metal lithium is to arrange anhydrous lithium chloride in an electrolytic cell, take the anhydrous potassium chloride as an auxiliary agent, and prepare the metal lithium by melting electrolysis at a high temperature. Liquid metal lithium is separated out at the cathode and is gathered on the surface of the molten salt, and domestic manufacturers scoop the metal lithium out of the electrolytic bath by using a metal strainer, pour the metal lithium into transformer oil, cool and cast ingot. The product is easy to be polluted by air in the process of scooping out the metallic lithium, so that the purity of the metallic lithium is reduced, and the requirements of high-energy batteries, lithium alloys and nuclear-controlled fusion reactions cannot be met. The manual lithium discharging process has poor working environment, the scooped metal lithium carries more impurities, and the production efficiency is low.
The automatic collecting device for the metal lithium electrolytic cell is developed, the problem of separation of lithium and chlorine is effectively solved, metal lithium generated by electrolysis is collected in a lithium collecting cylinder and is guided to a lithium collector by virtue of buoyancy of molten salt, and automatic lead-out and direct casting of the lithium are realized.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a metal lithium electrolysis trough automatic collection device, the purpose realizes the automatic derivation collection of lithium electrolysis trough lithium.
For reaching the above-mentioned purpose, the utility model relates to a metal lithium electrolytic bath automatic collection device, including the screen cloth, the top of screen cloth is equipped with the inner baffle, and the inner baffle is equipped with the baffle outward, and the inner baffle top passes through the steel sheet with the baffle top to be connected, is equipped with in the top of steel sheet one side and carries a lithium section of thick bamboo, is equipped with out the lithium mouth on carrying the last middle part casing of a lithium section of thick bamboo, goes out the lithium mouth and is connected with oblique long tube one end, and the oblique long tube other end is connected with lithium device, and lithium device bottom outlet pipe is.
The screen is a cylindrical screen, the inner partition plate and the baffle are cylindrical, the inner partition plate, the baffle and the steel plate form a cylindrical ring with an opening at the bottom, and the steel plate on the top surface of the cylindrical ring is inclined.
The height of the baffle is greater than that of the inner baffle.
The steel sheet is mounted at 15-30 ° with horizontal.
The screen is made of 321 stainless steel, the thickness of the screen is 1-1.5 mm, and the aperture ratio is 25-30%.
An inner barrel is arranged in the lithium extraction barrel, a lithium extraction rod is inserted into the inner barrel from the top of the lithium extraction barrel, the bottom of the lithium extraction rod is connected with the bottom surface of the inner barrel, and a top cover is arranged at the top of the lithium extraction barrel.
The lithium extracting rod is provided with two positioning pieces, one positioning piece is arranged on the lithium extracting rod outside the lithium extracting barrel, the other positioning piece is arranged on the lithium extracting rod in the inner barrel, and the bottom surface of the inner barrel is provided with two lithium inlets.
The lithium collecting device is a lithium collecting cylinder, the top of the lithium collecting cylinder is arranged on a cylinder cover, the cylinder cover is provided with an air outlet, a heating cable is arranged on the periphery of the lithium collecting cylinder, a ceramic fiber felt is wound on the periphery of the heating cable, and the upper limit of the heating temperature of the heating cable is 390 ℃.
The lithium extraction cylinder is arranged at the high point of the inclined steel plate, the high point of the inclined steel plate is provided with an opening, and the high point of the inclined steel plate is communicated with the opening at the bottom of the bottom surface of the lithium extraction cylinder.
The heating cable is arranged on the periphery of the inclined long pipe, a layer of ceramic fiber felt with the thickness of 15mm is wound on the periphery of the heating cable, and the upper limit of the heating temperature of the heating cable is 390 ℃.
The utility model has the advantages of effect: the utility model discloses it is rational in infrastructure, realized the automatic derivation ingot casting of metal lithium, avoided artifical manual lithium in-process metal lithium and air oxygen and nitrogen gas contact, made metal lithium receive the pollution, still reduced intensity of labour simultaneously and improved operational environment, reduced the probability that the staff was scalded by the high temperature fused salt in operation process.
Drawings
Fig. 1 is a schematic diagram of an automatic collecting device of a metal lithium electrolytic cell of the invention.
Fig. 2 is a structural diagram of an automatic collecting device of a metal lithium electrolytic cell of the invention.
Fig. 3 is a cut-away schematic view of fig. 2.
In the figure: 1. a lithium extraction rod; 2. a top cover; 3. positioning plates; 4. a lithium extraction cylinder; 5. a slant long tube; 6. an inner partition plate; 7. a flange; 8. a steel plate; 9. a lithium collecting device; 10. a baffle plate; 11. a valve; 12. screening a screen; 13. an inner barrel; 14. a cylinder cover; 15. an anode; 16. a cathode; 17. an electrolytic cell; 18. an electrolyte.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings. However, the scope of the present invention is not limited by the embodiments.
As shown in the figure, the utility model relates to a metal lithium electrolytic bath automatic collection device, including screen cloth 12, screen cloth 12's top is equipped with interior baffle 6, and interior baffle 6 is equipped with baffle 10 outward, and interior baffle 6 top is passed through steel sheet 8 with baffle 10 top and is connected, is equipped with in the top of steel sheet 8 one side and carries a lithium section of thick bamboo 4, is equipped with out the lithium mouth on carrying the last middle part casing of a lithium section of thick bamboo 4, goes out the lithium mouth and is connected with 5 one end of oblique long tube, and the 5 other ends of oblique long tube are connected with collection lithium device 9, and collection lithium device 9 bottom outlet pipe is connected with.
The screen cloth 12 is cylindrical, the inner partition plate 6 and the baffle plate 10 are cylindrical, the inner partition plate 6, the baffle plate 10 and the steel plate 8 form a cylindrical ring with an open bottom surface, the top steel plate 8 of the cylindrical ring is inclined, and the steel plate 8 is installed at an angle of 15-30 degrees with the horizontal line. The height of the baffle 10 is greater than the height of the inner baffle 6.
The screen 12 is made of 321 stainless steel, has a thickness of 1-1.5 mm, and has an aperture ratio of 25-30%.
An inner barrel 13 is arranged in the lithium extraction barrel 4, the lithium extraction rod 1 is inserted into the inner barrel 13 from the top of the lithium extraction barrel 4, the bottom of the lithium extraction rod 1 is connected with the bottom surface of the inner barrel 13, and a top cover 2 is arranged at the top of the lithium extraction barrel 4.
The lithium extracting rod 1 is provided with two positioning sheets 3, one positioning sheet 3 is arranged on the lithium extracting rod 1 outside the lithium extracting barrel 4, the other positioning sheet is arranged on the lithium extracting rod 1 in the inner barrel 13, and the bottom surface of the inner barrel 13 is provided with two lithium inlets.
The lithium collecting device 9 is a lithium collecting cylinder, the top of the lithium collecting cylinder is arranged on a cylinder cover 14, an air outlet is arranged on the cylinder cover 14, a heating cable is arranged on the periphery of the lithium collecting cylinder, a ceramic fiber felt is wound on the periphery of the heating cable, and the upper limit of the heating temperature of the heating cable is 390 ℃.
The lithium extraction barrel 4 is arranged at the high point of the inclined steel plate 8, the high point of the inclined steel plate 8 is provided with an opening, the high point of the inclined steel plate is communicated with the opening at the bottom of the bottom surface of the lithium extraction barrel, and the inclination angle of the bottom surface of the lithium extraction barrel 4 is the same as that of the steel plate 8.
The heating cable is arranged on the periphery of the oblique long pipe 5, a layer of ceramic fiber felt with the thickness of 15mm is wound on the periphery of the heating cable, the outer diameter of the oblique long pipe 5 is a steel pipe with the diameter of phi 60mm, the flange 7 is arranged on the oblique long pipe 5, and the upper limit of the heating temperature of the heating cable is 390 ℃.
The utility model discloses a theory of operation: as shown in figure 1, the utility model discloses utilize the linker principle, the linker liquid level upper pressure equals, but there are mutually immiscible different liquid in both sides, and the height that rises two liquid levels from the interface is in inverse proportion with liquid density, and the difference in height that produces through the difference in density of lithium and electrolyte 18 carries out the lithium collection. First, the randomly floating lithium metal produced in the electrolytic bath 17 is collected and confined to a fixed area for subsequent collection. Second, the enriched metallic lithium is "amplified" in height. Because the ratio of the density of the metal lithium to the density of the electrolyte is only 1:3.3, the height of the metal lithium is 3.3 times of the height of the electrolyte under the same liquid level atmospheric pressure, and the liquid level of the metal lithium is increased in the lithium extraction cylinder. And finally, collecting the lithium overflowing from the lithium extracting barrel into a lithium collecting device, and taking out and casting at regular intervals according to production requirements.
During normal production, the cathode undergoes a reduction reaction, and the lithium metal produced at the cathode interface floats upwards along the cathode plate under the action of buoyancy. The utility model discloses with the screen cloth cover between positive pole 15 and negative pole 16, and the baffle cross section is greater than the outer ring in negative pole, so the metal lithium that the negative pole reduction produced upward movement under the effect of buoyancy, the lithium that floats to the upper strata passes through the continuous steel sheet high point department of gathering of tilting plate to finally under the effect of steel sheet, enter into through the top trompil of steel sheet and carry in the lithium section of thick bamboo.
In the electrolytic process, the metal lithium generated at the cathode and the chlorine generated at the anode are blocked by the screen, so that secondary reaction is avoided, and the current efficiency is improved.
The lithium metal gathered to the high point of the steel plate continuously rises with the increase of the quantity and enters the lithium extracting cylinder. Along with the proceeding of electrolytic reaction, the metal lithium generated by electrolysis continuously enters the inner cylinder of the lithium extracting cylinder from the lithium inlet, and the molten electrolyte in the cylindrical circle at the initial stage of starting the electrolytic cell is gradually pressed into the electrolytic cell by the metal lithium continuously enriched in the lithium extracting cylinder, so that the purity of the metal lithium generated by electrolysis is ensured.
The lithium metal continuously pours into the inner barrel from the lithium inlet, and when the lithium metal overflows to the outlet, the lithium metal automatically flows into the lithium collecting device from the outlet through the inclined long pipe. In consideration of actual conditions, an operator can lift the metal lithium out of the inner barrel through the lithium lifting rod according to actual needs.
The linear motion is carried out when the operating personnel utilizes the lithium lifting rod to lift lithium, and in order to ensure the stability of the lithium lifting operation, two positioning pieces are arranged on the lithium lifting rod during design to limit the upper limit stroke and the lower limit stroke of the lithium lifting rod, so that the smooth operation of the operating personnel in the lithium lifting process can be ensured.
In order to prevent lithium discharge blockage caused by lithium metal solidification and influence on normal operation of the lithium electrolysis process, a heating cable is specially arranged on the periphery of the inclined long pipe 5, and the upper limit of heating temperature control is 390 ℃. And a layer of 15mm ceramic fiber felt is wound on the periphery of the heating cable. The ceramic fiber felt is a light and flexible refractory fiber heat insulation material, is formed by combining and processing high-purity refractory oxide and an organic binding agent, and has the characteristics of high compressive strength, long service life, low thermal capacity, low thermal conductivity, good toughness, high flatness, easy cutting and installation and convenient construction.
The middle position of the inclined long pipe 5 is provided with a flange to prevent the metal lithium from being solidified and blocked in the lithium discharging process when the electric heat tracing device is in failure. And cleaning the blocked lithium metal at the position of the flange by a manual cleaning mode.
In order to ensure that the metal lithium can smoothly overflow into the lithium collecting barrel, the barrel cover is arranged at the top of the lithium collecting barrel, so that gas in the lithium collecting barrel can be smoothly discharged, and liquid metal can smoothly enter the lithium collecting barrel without being influenced by the air pressure in the barrel. In order to ensure that the electrolytic lithium is in a molten liquid state, a ceramic fiber felt is additionally arranged for heat preservation.
Claims (10)
1. The utility model provides a metal lithium electrolytic cell automatic collection device, its characterized in that includes the screen cloth, and the top of screen cloth is equipped with the inner baffle, and the inner baffle is equipped with the baffle outward, and the inner baffle top is passed through the steel sheet with the baffle top and is connected, is equipped with in the top of steel sheet one side and carries a lithium section of thick bamboo, is equipped with out the lithium mouth on carrying the last middle part casing of a lithium section of thick bamboo, goes out the lithium mouth and is connected with oblique long tube one end, and the oblique long tube other end is connected with collection lithium device, and collection lithium device.
2. The automatic collecting device for the metal lithium electrolytic cell of claim 1, wherein the screen is a cylindrical screen, the inner partition plate and the baffle plate are cylindrical, the inner partition plate, the baffle plate and the steel plate form a cylindrical ring with an opening at the bottom, and the steel plate on the top of the cylindrical ring is inclined.
3. The automatic collection device for the metal lithium electrolytic cell according to claim 1 or 2, wherein the height of the baffle is greater than that of the inner baffle.
4. The automatic collection device of the metal lithium electrolytic cell of claim 2, wherein the steel plate is installed at 15-30 ° from horizontal.
5. The automatic collecting device of claim 2, wherein the screen is made of 321 stainless steel, has a thickness of 1-1.5 mm, and has an aperture ratio of 25-30%.
6. The automatic collecting device of the metal lithium electrolytic cell of claim 1, wherein the lithium extraction cylinder is internally provided with an inner cylinder, the lithium extraction rod is inserted into the inner cylinder from the top of the lithium extraction cylinder, the bottom of the lithium extraction rod is connected with the bottom surface of the inner cylinder, and the top of the lithium extraction cylinder is provided with a top cover.
7. The automatic collecting device for the metal lithium electrolytic cell according to claim 6, wherein the lithium lifting rod is provided with two positioning pieces, one positioning piece is arranged on the lithium lifting rod outside the lithium lifting cylinder, the other positioning piece is arranged on the lithium lifting rod in the inner cylinder, and the bottom surface of the inner cylinder is provided with two lithium inlets.
8. The automatic collecting device for the metal lithium electrolytic cell according to claim 1, wherein the lithium collecting device is a lithium collecting cylinder, the top of the lithium collecting cylinder is arranged on a cylinder cover, the cylinder cover is provided with an air outlet, a heating cable is arranged at the periphery of the lithium collecting cylinder, a ceramic fiber felt is wound at the periphery of the heating cable, and the upper limit of the heating temperature is 390 ℃.
9. The automatic collecting device of the metal lithium electrolytic cell of claim 1, wherein the lithium extraction cylinder is arranged at a high point of the inclined steel plate, the high point of the inclined steel plate is provided with an opening, and the high point of the inclined steel plate is communicated with the opening at the bottom of the bottom surface of the lithium extraction cylinder.
10. The automatic collecting device of the metal lithium electrolytic cell in claim 1, wherein the heating cable is arranged around the long inclined tube, a layer of ceramic fiber felt with a thickness of 15mm is wound around the heating cable, and the upper limit of the heating temperature of the heating cable is 390 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022503391.2U CN213652672U (en) | 2020-11-03 | 2020-11-03 | Automatic collecting device for metal lithium electrolytic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022503391.2U CN213652672U (en) | 2020-11-03 | 2020-11-03 | Automatic collecting device for metal lithium electrolytic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213652672U true CN213652672U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022503391.2U Active CN213652672U (en) | 2020-11-03 | 2020-11-03 | Automatic collecting device for metal lithium electrolytic cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213652672U (en) |
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2020
- 2020-11-03 CN CN202022503391.2U patent/CN213652672U/en active Active
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