CN214694319U - Cell for lithium extraction cell - Google Patents
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- CN214694319U CN214694319U CN202121013350.3U CN202121013350U CN214694319U CN 214694319 U CN214694319 U CN 214694319U CN 202121013350 U CN202121013350 U CN 202121013350U CN 214694319 U CN214694319 U CN 214694319U
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Abstract
The utility model belongs to the technical field of the electrochemistry, concretely relates to carry lithium cell to use unit. The utility model discloses a carry unit for lithium groove, including two and take off and inlay the utmost point, every it all is equipped with the electrode in the utmost point to take off and inlay, and the both sides face of every electrode all is provided with the water distribution structure, the structural water distribution supporting network that is provided with of water distribution for the water distribution uniformity, wherein, the positive pole that takes off and inlays is for taking off and inlay the positive pole, and the negative pole that takes off and inlays that is provided with the negative pole is for taking off and inlaying, take off and inlay the positive pole with it regards to take off and inlay the negative pole the ionic membrane symmetry, adjacent closely laminate between water distribution net, electrode or the ionic membrane. The unit for the lithium extraction groove can effectively improve the effective current density of the unit space; increasing the concentration of the extracted target lithium-rich liquid; the project investment is reduced, and the salt pan construction investment is reduced or even saved; the adaptability to salt lake brine with different concentrations, especially the adaptability to raw brine is improved.
Description
Technical Field
The utility model belongs to the technical field of the electrochemistry, concretely relates to carry lithium cell to use unit.
Background
With the consumption of non-renewable energy, the development and utilization of new energy is a necessary trend. The new energy automobile, as a typical representative of the development and utilization of new energy, has been rapidly developed in recent years, and will eventually surpass the market share of the conventional fuel automobile, and gradually complete the replacement of the fuel automobile. The market demand of lithium as an essential energy metal for a new energy automobile power system will also increase rapidly, and the efficient, clean and low-cost exploitation of lithium resources is crucial to the sustainable development of the new energy automobile industry.
The lithium resource exists in nature mainly in the form of ore and brine, wherein most of the lithium resource exists in the brine, particularly salt lake brine, and the reserve accounts for more than 80% of the total reserve of the lithium resource. Along with the exploitation of high-quality lithium ore resources, the requirements of the current process that the high-grade ores are less and the cost for extracting lithium from the ores is higher are met. Compared with the extraction of lithium from ore, the lithium in brine has rich lithium resource reserves, and lithium exists in an ion form, so that the lithium extraction cost has natural advantages. However, besides lithium, brine usually contains symbiotic cations such as sodium, potassium, magnesium, calcium and the like, and only a few salt lake brine has a low magnesium-lithium ratio (6.4 in the case of the salt lake of chile atacama), and most of the salt lake brine has a magnesium-lithium ratio of more than 20, even up to 1825 (the khar salt lake). Mg (magnesium)2+With Li+The lithium-ion-containing bittern is positioned at the diagonal position of the periodic table of elements, the chemical properties of the bittern are very similar as known by the diagonal rule, and the efficient separation is difficult, so that the development and utilization of lithium resources in the bittern are severely restricted, and the extraction of lithium from the bittern with high magnesium-lithium ratio is a worldwide problem. Researchers adopt technologies such as a precipitation method, a carbonization method, a calcination method, a solvent extraction method and the like to extract lithium resources in brine, but most of the methods have complex processes, high production cost, higher requirements on equipment, low purity of final products and are not beneficial to large-scale production.
In order to solve the problem that salt lake brine with high magnesium-lithium ratio is difficult to economically and efficiently extract cleanly, CN 102382984A provides a new technology for extracting lithium from the salt lake by an electrochemical de-intercalation method, namely, the working principle of an aqueous lithium battery is utilized, a de-lithiated battery anode material having a memory effect on lithium ions is taken as an electrode material, salt lake brine is taken as a cathode electrolyte, a magnesium-free supporting electrolyte is taken as an anode electrolyte, and thus an electrochemical de-intercalation system is formed to realize lithium extraction. In order to solve the problem of industrial production, a groove body, called as a desorption groove, needs to be provided, brine is discharged or lithium-containing solution and lithium-enriched solution are recycled, and the process of extracting lithium from a salt lake by an electrochemical desorption method is completed.
The application No. 202021954468 discloses a water distribution supporting structure of a yin-yang de-embedding groove of a groove body, but a water distribution and supporting grid is formed by vertical frames and horizontal water-supplementing strips, the thickness of the groove body unit is large, the grid space is too large, the water distribution and supporting effect in the area of the space is poor, the electrode current efficiency is low, and the number of the groove body forming units is large; the concentration of the target lithium-rich liquid from which lithium ions are extracted from the electrode to the positive electrode side is low, and the post-stage concentration process is relatively long; meanwhile, the ion membrane at the corresponding part can deform; the thickness of the grid is large, if the pressure of an external liquid pump changes and brine or lithium-rich solution in the negative and positive de-intercalation tank is continuously exchanged, the pressure applied to the ionic membrane by the solution in the negative and positive de-intercalation tank under different concentrations can be different, a gap is formed between the support framework and the ionic membrane, the ionic membrane can locally swing, and the service life of the ionic membrane is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a carry lithium cell structure for groove.
According to the lithium extraction cell unit of the embodiment of the utility model, the lithium extraction cell unit comprises two de-intercalation poles, each de-intercalation pole is provided with an electrode and two water distribution structures, the water distribution structures are oppositely arranged on two sides of the electrode, the water distribution structure is provided with a water distribution support net for uniformly supporting the cavity structure and enhancing the mass transfer of the working liquid, wherein,
the anode-provided de-intercalation cathode is a de-intercalation anode, the cathode-provided de-intercalation cathode is a de-intercalation cathode, an ionic membrane is arranged between the de-intercalation anode and the de-intercalation cathode, the de-intercalation anode and the de-intercalation cathode are symmetrical relative to the ionic membrane, and the adjacent water distribution structure and the electrode are tightly attached.
Preferably, the extraction anode is tightly attached to the ionic membrane, and the extraction cathode is tightly attached to the ionic membrane.
It should be noted that the "two sides" of the electrode in the present embodiment refers to two planes with larger plane area on the electrode, and the two planes are oppositely arranged.
According to the utility model discloses embodiment's carry unit for lithium groove, the water distribution structure includes water distribution plate, framework and at least one deck water distribution supporting network, wherein, the water distribution supporting network is fixed on the water distribution plate, the caulking groove has all been seted up to the upper surface of framework, lower surface, the water distribution plate set up in the caulking groove, just the thickness of water distribution plate equals the degree of depth of caulking groove.
According to the unit for the lithium extraction tank of the embodiment of the present invention, the lower portion of the water distribution plate is provided with a plurality of water distribution tanks, the plurality of water distribution tanks are uniformly distributed along the bottom edge of the water distribution support net and are in contact with or connected to the water distribution support net, the bottom of the water distribution plate is provided with at least one water inlet channel, and the water inlet channel is communicated with the water distribution tank;
the water distribution plate is characterized in that a plurality of water collecting grooves are formed in the upper portion of the water distribution plate, the water collecting grooves are uniformly distributed along the top edge of the water distribution supporting net and are in contact with or connected with the water distribution supporting net, and at least one water outlet channel is formed in the top of the water distribution plate and is communicated with the water collecting grooves.
According to the unit for the lithium extraction groove of the embodiment of the utility model, at least one water inlet hole is arranged at the lower part of the frame body, and the water inlet hole is communicated with the water inlet channel; at least one water outlet hole is formed in the upper portion of the frame body and communicated with the water outlet channel.
According to the utility model discloses embodiment's carry unit for lithium groove, at least one water hole of crossing has still been seted up respectively to the upper portion of framework, lower part.
According to the utility model discloses embodiment's carry unit for lithium groove, be equipped with the trompil on the water distribution plate, the shape of trompil with the shape of water distribution supporting network is like matching, just the water distribution supporting network gomphosis in the trompil.
According to the utility model discloses a carry lithium cell and use unit, water distribution supporting network includes warp and weft, warp is located weft's below, just warp weft arranges into even latticedly, and there are 2-10 net per inch.
According to the utility model discloses embodiment's carry unit for lithium groove, the thickness of water distribution supporting network is 0.3 ~ 3.0 mm.
According to the utility model discloses embodiment's carry unit for lithium groove, the material that the water distribution supporting network adopted with the material that the water distribution plate adopted is the same.
According to the utility model discloses embodiment's carry unit for lithium groove, the thickness of desorption positive pole equals the thickness of anode chamber, the thickness of desorption negative pole equals the thickness of cathode chamber.
Taking the analysis of the lithium-intercalating cathode chamber as an example, the reaction process of intercalating lithium ions from the lithium solution to be extracted takes place in the cathode chamber. From the region of action of mass transfer, the liquid layer on the surface of the electrode and in the vicinity thereof is roughly divided into an electric double layer, a diffusion layer region, and a convection layer region. Since brines are highly saline solutions containing lithium, the electric double layer is usually very thin and can be ignored. The dominant mass transfer modes for this region of the diffusion layer are electromigration and diffusion, typically 10 a thick-3～10-2Centimeters. From a macroscopic point of view, very close to the electrode surface, it is known from fluid mechanics that in such a flow layer close to the electrode surface, the convection velocity of the liquid is small, and the closer to the electrode surface, the smaller the convection velocity. Thus, convective mass transfer has little effect in this region. When the solution contains a large amount of non-lithium electrolyte, the reactive ion Li+The transference number of the reaction ion is very small, the electro-migration mass transfer effect of the reaction ion can be ignored, and the diffusion mass transfer is the main mass transfer mode of the diffusion layer. The liquid layer near the surface of the reaction electrode is mainly a diffusion layer. The convection zone is the area outside the area, the concentration of various substances in the area is the same as the bulk concentration of the solution, generally, the convection mass transfer effect of the area is far greater than the electromigration mass transfer effect, and the convection mass transfer effect in the area can be considered to play a main role by neglecting the effect of the latter.
In the electric reaction, when current flows through the electrode, three mass transfer methodsThe formulae may be present simultaneously, but the predominant mass transfer mode is often only one or two, the reaction Li being consumed if the electrode reaction consumes the reactive ion+The particles should be transported from the solution bulk to be replenished; due to the large amount of other electrolyte particles contained in the lithium solution to be extracted, the reactive Li is transported to the surface of the electrode+The particle process is completed by two continuous steps of convection and diffusion in series, and because the speed of convection mass transfer is far higher than that of diffusion mass transfer, the speed of liquid phase mass transfer is mainly controlled by diffusion mass transfer.
To obtain a steady state diffusion process, the steady state diffusion process can only be achieved if the reaction particles can be timely replenished by other mass transfer means. There is generally always convection in the solution, and at surfaces remote from the electrodes, the convection velocity is much greater than the diffusion velocity, so that steady state diffusion can only be achieved if both convection and diffusion are present. The presence of a convective effect of a certain intensity is a necessary condition to achieve a steady state diffusion.
Therefore, the convection velocity far greater than the diffusion velocity can be realized through multi-level uniform disturbance or stirring of the liquid in the cavity, and fresh solution is continuously provided for the diffusion layer. Because the thickness of the diffusion layer is thinner, a water distribution supporting net is selected and attached to the electrode plate. Otherwise, it means that there is a gap between the electrode and the support net, there is no water distribution net in the cathode chamber, the convection velocity of the convection layer cannot keep up with that of the external convection layer (the liquid in the same chamber where the water distribution net is arranged), or the convection layer of the part without the water distribution net blocks the convection velocity of the whole convection layer, which affects the diffusion and convection velocity of the whole unit, resulting in relatively slow electrochemical reaction velocity of the electrode.
Correspondingly, compared with a cavity without a water distribution structure, when the cavity is cleaned by the washing process, impurities in the electrode coating material in the cavity can be quickly taken away by the washing water due to the convection effect, the washing process time can be shortened, and the water consumption of the washing process can be reduced.
The utility model has the advantages that:
the unit for the lithium extraction groove can greatly improve the effective current density of the unit space; the deformation degree of the ionic membrane under stress is reduced, and the service life of the ionic membrane is prolonged; the unit yield of each de-caulking groove is improved, and the project investment is reduced; the adaptability to salt lake brine with different concentrations, especially the adaptability to raw brine is improved; the steps of the salt field construction process are reduced or omitted, and the whole lithium extraction process flow is shortened or simplified.
The unit structure can also be used for purifying or deslagging sodium, potassium, rubidium and cesium in the solution.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a unit for a lithium extraction cell according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the water distribution support net of the present invention;
FIG. 3 is a schematic structural view of the water distribution structure of the present invention;
FIG. 4 is a schematic structural view of a water distribution plate with a layer of water distribution support net according to the present invention;
FIG. 5 is a cross-sectional view taken along the line C-C of FIG. 4;
FIG. 6 is a cross-sectional view taken in the direction D-D of FIG. 4;
FIG. 7 is a cross-sectional view taken in the direction E-E of FIG. 4;
fig. 8 is a schematic structural view of the frame body of the present invention;
FIG. 9 is a cross-sectional view taken along line A-A of FIG. 8;
fig. 10 is a sectional view taken in the direction B-B of fig. 8.
FIG. 1-Ionic Membrane; 2-water distribution structure; 3-an electrode; 21-water distribution supporting net; 22-water distribution plate; 23-a frame body; 34-a water collecting tank; 35-water outlet channel; 38-water distribution tank; 39-water inlet channel; 30-water inlet holes; 30-1-water inlet tank; 31-lower water through hole; 32-water passing holes; 33-water outlet; 33-1-water outlet groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model discloses a carry unit for lithium groove includes two and takes off and inlays utmost point, every take off and inlay and all be equipped with electrode 3 in the utmost point, all be provided with water distribution structure 2 on every electrode 3's the relative both sides, be provided with at least one deck water distribution supporting network 21 on the water distribution structure 2 for the uniform water distribution, wherein, the taking off and inlaying that is provided with the positive pole is for taking off and inlaying the positive pole, the taking off and inlaying that is provided with the negative pole is for taking off and inlaying the negative pole, the taking off and inlaying the positive pole with it regards to take off and inlaying the negative pole 1 symmetry of ionic membrane, adjacent water distribution structure 2, electrode 3, further, closely laminate between taking off and inlaying the positive pole and the ionic membrane to closely laminate between taking off and inlaying the negative pole and the ionic membrane, not only can play the supporting role, increase of life-life, be convenient for make up a plurality of units moreover.
The structure of the water distribution support net 21 is shown in fig. 2, the water distribution support net 21 includes warps and wefts, the warps are located below the wefts, and the warps and the wefts are arranged in a uniform grid shape. The thickness of the water distribution supporting net 21 is 0.3-3 mm. The specifications of the water distribution supporting net are various, and each inch has 2-10 grids. Each warp and weft is in a twisted and smooth transition state, so that the resistance to liquid is small, and the local uniform disturbance effect is realized. The ionic membrane has small deformation, is not easy to damage, and is simple to assemble and construct.
As shown in fig. 2, after entering the water distribution support net from a water inlet point, the pressurized liquid can reach each part of the water distribution net support net; if water enters from a plurality of water inlet points, the liquid can be uniformly distributed to each part of the water distribution supporting net, and the liquid can collide and mix to form turbulence, thereby playing the roles of uniformly distributing water and mixing water.
As shown in fig. 3, the water distribution structure 2 includes a water distribution support net 21, a water distribution plate 22 and a frame 23, wherein the water distribution support net 21 is fixed on the water distribution plate 22, both the upper surface and the lower surface of the frame 23 are provided with caulking grooves, the water distribution plate 22 is disposed in the caulking grooves, and the thickness of the water distribution plate 22 is equal to the depth of the caulking grooves.
The structure of the water distribution plate 22 is as shown in fig. 4-7, the water distribution plate 22 is provided with openings, the shape of the openings matches with the shape of the water distribution support net 21, and the water distribution support net 21 is embedded in the openings, that is, the length and width of the structure of the water distribution support net 21 are just placed in the openings of the water distribution plate 22. One or two layers of water distribution support nets 21 are fixed on the water distribution plate 22 by welding. The lower part of the water distribution plate 22 is provided with a plurality of water distribution grooves 38, the plurality of water distribution grooves 38 are uniformly distributed along the bottom edge of the water distribution support net 21 and are contacted with or connected with the water distribution support net 21, the bottom of the water distribution plate 22 is provided with at least one water inlet channel 39, and the water inlet channel 39 is communicated with the water distribution grooves 38; the upper part of the water distribution plate 22 is provided with a plurality of water collecting grooves 34 which are uniformly distributed along the top edge of the water distribution support net 21 and are in contact with or connected with the water distribution support net 21, the top of the water distribution plate 22 is provided with at least one water outlet channel 35, and the water outlet channel 35 is communicated with the water collecting grooves.
As shown in fig. 8 to 10, at least one water inlet hole 30 is formed in the lower portion of the frame 23, and the water inlet hole 30 is communicated with the water inlet channel 39 through a water inlet groove 30-1; at least one water outlet hole 33 is formed in the upper portion of the frame 23, and the water outlet hole 33 is communicated with the water outlet channel 35 through a water outlet hole 33-1.
At least one upper water through hole 32 is formed in the upper portion of the frame 23, and at least one lower water through hole 31 is formed in the lower portion of the frame 23. The lower water through hole 31 on one frame 23 corresponds to the water inlet hole 30 on the other frame 23, namely, the axis of the lower water through hole 31 is superposed with the axis of the water inlet hole 30; similarly, the upper water through hole 32 of one frame 23 corresponds to the water through hole 33 of the other frame 23, i.e., the axis of the upper water through hole 32 coincides with the axis of the water through hole 33. Specifically, the liquid with pressure sequentially passes through the lower water inlet hole, the water inlet channel and the water distribution channel to reach the water distribution supporting net, and after the water is uniformly distributed by the water distribution supporting net, the liquid sequentially passes through the water collecting channel, the water outlet channel and the water outlet hole.
When the water distribution support net is composed of more than one layer, taking two layers as an example, the layer close to the electrode and the layer close to the side of the ionic membrane can adopt water distribution nets with different specifications.
In actual work, a plurality of units for the whole lithium extraction groove of the utility model form the desorption groove for extracting lithium in the salt lake by an electrochemical desorption method. A plurality of units are stacked together, an end plate is added at the outermost side, and pressure is applied to prevent the formed negative and positive de-embedding grooves from leaking liquid. The thickness of the water distribution supporting net is generally not more than 3mm, so that the thickness of each unit cavity can be not more than 12mm, the whole de-intercalation tank formed by a plurality of negative and positive de-intercalation units in engineering is relatively small in volume, and compared with the prior art, the lithium-rich solution concentration is improved after lithium ions are de-intercalated from the anode coated with the adsorption material and released into a chamber with a small volume, the strength of a later-stage lithium-rich solution concentration process section is reduced, and the subsequent process investment is reduced; the pressure applied to the ionic membrane is uniform and changes are small, so that the service life of the ionic membrane is prolonged; the occupied area of the whole groove body with the same output is reduced relative to the original de-embedding groove, and the project investment is reduced. More importantly, the working current density of the electrode is greatly improved, the adaptability to brine concentration is enhanced, the salt field area of a salt field tedding process in the production process of extracting lithium from the salt lake is reduced, even the tedding process step is removed, and the industrialization process of the salt lake lithium extracting technology is greatly promoted.
Comparative experiment:
selecting TA1 diamond pure titanium net 3 x 6 with thickness of 1 mm, cutting into 18 pieces with size of 20cm × 17cm, and mixing LiFePO at a weight ratio of 8:1:14And uniformly mixing the acetylene black and the PVDF, adding an N-methylpyrrolidone (NMP) organic solvent, grinding and mixing into slurry, coating the slurry on a titanium mesh, wherein the coating mass density of 10 titanium meshes is 1 unit, and the coating mass density of the other 8 titanium meshes is 1/3 units, respectively placing the titanium meshes in a vacuum drying box, vacuumizing, heating to 110 ℃, drying for 12 hours, and cooling to obtain the prepared lithium iron phosphate electrode.
And (3) taking 9 integral electrodes coated with the lithium iron phosphate as anodes (5 electrodes coated with 1 unit of mass density and 4 electrodes coated with 1/3 units of mass density), respectively taking foamed nickel as cathodes, placing the electrodes in 1L of NaCl solution with the concentration of 20g/L, applying a voltage of less than 1.0V to two ends of a titanium electrode and the foamed nickel for 12 hours, keeping the treatment voltage of each electrode the same, wherein the current applied to the electrode with the low coating density is 1/3 of the current of the other electrode, and extracting lithium in the lithium iron phosphate coated on a titanium mesh to prepare the iron phosphate ion sieve electrode.
The prepared lithium iron phosphate electrode is taken as an anode, the prepared iron phosphate ion sieve electrode is taken as a cathode, the coating density of the cathode and the anode is kept consistent, the cathode and the anode are placed into a de-intercalation tank, the size of a cavity of the cathode and the anode de-intercalation tank is 24 multiplied by 18 multiplied by 0.8 cm (height multiplied by width multiplied by thickness), and water distribution nets are respectively placed on two sides of the anode and the cathode. The water distribution net is placed according to the following table. The cathode was placed in a LiCl solution under test conditions and contained 90 g/l Na+The anode was placed with a NaCL supporting electrolyte of 10 g/l. The magnetic pump respectively supplies the liquid in the storage tank for the lithium solution to be extracted and the storage tank for the lithium-rich solution to the cathode chamber and the anode chamber, and the concentration of the lithium solution to be extracted is kept unchanged. And performing respective experiments, and performing lithium extraction comparison.
The power supply mode between the cathode plate and the anode plate is a constant current to constant voltage mode. The water distribution network has the same specification. The test temperature was 26 ℃ and the humidity was 60%. Conditions such as initial applied current, reaction cut-off current, composition of the lithium solution to be extracted, thickness of the base coating material, flow rate, average current density of the electrode during the reaction, etc. are shown in the following table.
Injecting: the water distribution net is placed in the cavity without special fixation.
Therefore, after the water distribution nets are applied to the two surfaces of the electrode, the current density of the electrode reaction is greatly improved, namely the unit structure for the lithium extraction groove can obviously improve the efficiency of extracting lithium from the solution to be extracted.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The unit for the lithium extraction tank is characterized by comprising two extraction and insertion electrodes, wherein each extraction and insertion electrode is internally provided with an electrode and two water distribution structures, the water distribution structures are oppositely arranged on two sides of the electrode, the water distribution structures are provided with water distribution supporting nets for uniformly distributing water,
the anode-provided de-intercalation cathode is a de-intercalation anode, the cathode-provided de-intercalation cathode is a de-intercalation cathode, an ionic membrane is arranged between the de-intercalation anode and the de-intercalation cathode, the de-intercalation anode and the de-intercalation cathode are symmetrical relative to the ionic membrane, and the adjacent water distribution structure and the electrode are tightly attached.
2. The unit of claim 1, wherein the water distribution structure comprises a water distribution plate, a frame and at least one layer of water distribution support net, wherein the water distribution support net is fixed on the water distribution plate, the upper surface and the lower surface of the frame are both provided with caulking grooves, the water distribution plate is arranged in the caulking grooves, and the thickness of the water distribution plate is equal to the depth of the caulking grooves.
3. The unit for the lithium extraction tank as recited in claim 2, wherein the lower portion of the water distribution plate is provided with a plurality of water distribution tanks, the plurality of water distribution tanks are uniformly distributed along the bottom edge of the water distribution support net and are in contact with the water distribution support net, the bottom of the water distribution plate is provided with at least one water inlet channel, and the water inlet channel is communicated with the water distribution tanks;
the water distribution plate is characterized in that a plurality of water collecting grooves are formed in the upper portion of the water distribution plate, the water collecting grooves are uniformly distributed along the top edge of the water distribution supporting net and are in contact with the water distribution supporting net, and at least one water outlet channel is formed in the top of the water distribution plate and is communicated with the water collecting grooves.
4. The unit for the lithium extraction tank as recited in claim 3, wherein at least one water inlet hole is formed in the lower portion of the frame body, and the water inlet hole is communicated with the water inlet channel; at least one water outlet hole is formed in the upper portion of the frame body and communicated with the water outlet channel.
5. The unit for a lithium extraction tank of claim 4, wherein the upper part and the lower part of the frame body are respectively provided with at least one water through hole.
6. The unit for the lithium extraction tank of claim 2, wherein the water distribution plate is provided with openings, the shape of the openings matches with the shape of the water distribution support net, and the water distribution support net is embedded in the openings.
7. The unit for the lithium extraction tank as claimed in any one of claims 1 to 5, wherein the water distribution support net comprises warp and weft, the warp is located below the weft, and the warp and the weft are arranged in a uniform grid shape, wherein each inch has 2-10 grids.
8. The unit for the lithium extraction tank as claimed in claim 6, wherein the thickness of the water distribution support net is 0.3-3.0 mm.
9. The unit for the lithium extraction tank as claimed in claim 2, wherein the water distribution support net is made of the same material as the water distribution plate.
10. The cell for a lithium extraction cell of claim 1, wherein the extraction anode is in close contact with the ionic membrane, and the extraction cathode is in close contact with the ionic membrane.
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| CN202121013350.3U CN214694319U (en) | 2021-05-12 | 2021-05-12 | Cell for lithium extraction cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636887A (en) * | 2022-05-20 | 2022-06-17 | 石家庄嘉硕电子技术有限公司 | State detection method, consistency detection method and device for de-embedded electrode plate pair |
| CN115772609A (en) * | 2023-02-13 | 2023-03-10 | 石家庄嘉硕电子技术有限公司 | Electrochemical lithium extraction method and electrochemical lithium extraction system |
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2021
- 2021-05-12 CN CN202121013350.3U patent/CN214694319U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636887A (en) * | 2022-05-20 | 2022-06-17 | 石家庄嘉硕电子技术有限公司 | State detection method, consistency detection method and device for de-embedded electrode plate pair |
| CN114636887B (en) * | 2022-05-20 | 2022-07-22 | 石家庄嘉硕电子技术有限公司 | State detection method, consistency detection method and device for de-embedded electrode plate pair |
| CN115772609A (en) * | 2023-02-13 | 2023-03-10 | 石家庄嘉硕电子技术有限公司 | Electrochemical lithium extraction method and electrochemical lithium extraction system |
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