A lithium ion extraction device based on a secondary crystallization method

Abstract

The application discloses a lithium ion extraction device based on a secondary crystallization method, which comprises a medium channel and a bearing piece; a main through hole for the bearing piece to enter and exit is arranged on the medium channel; at least part of the structure of the bearing piece can penetrate through the main through hole and extend into the medium channel to contact with the medium; the structure of the bearing piece extending into the medium channel is a hollow frame structure; at least one bearing plate for generating a crystallization reaction with the medium is arranged in the bearing piece; when a lithium ion solution with a certain temperature slowly flows, lithium carbonate in the solution can be adsorbed by the stable lattice, and the crystal nucleus grows, so that the purpose of lithium extraction is achieved.

Description

Technical Field

[0001] This invention relates to the field of lithium-ion extraction technology from industrial salt lakes, and particularly to a lithium-ion extraction device based on a secondary crystallization method. Background Technology

[0002] Lithium is one of the main components of batteries. Lithium-ion batteries have advantages such as high energy storage, stable charging and discharging, and long life. Electronic products in our lives, such as mobile phones, new energy vehicles, computers and other technological products, cannot do without lithium-ion batteries.

[0003] Lithium on Earth is primarily stored in salt lakes, and lithium extraction from these lakes is an inevitable trend in industrial production. China has numerous salt lakes, which account for over 80% of the country's lithium reserves. The Zabuye Salt Lake in Tibet is my country's largest salt lake and is rich in lithium carbonate.

[0004] Currently, the main method for lithium extraction from salt lakes is solar pool crystallization. However, this method is not suitable for solutions with high magnesium-to-lithium content, as magnesium ions can affect product quality. Therefore, a new technical solution is needed to address these issues. Summary of the Invention

[0005] The purpose of this invention is to provide a lithium-ion extraction device based on a secondary crystallization method to address the above-mentioned shortcomings, thereby solving the problem that magnesium ions affect product quality when using solar pool crystallization method in salt lake lithium extraction in the prior art.

[0006] This invention is achieved through the following scheme:

[0007] A lithium-ion extraction device based on secondary crystallization includes a medium channel and a carrier; the medium channel is provided with a main through hole for the carrier to enter and exit, and at least a portion of the structure of the carrier can penetrate the main through hole and extend into the medium channel to contact the medium; the structure of the carrier extending into the medium channel is a hollow frame structure, and at least one layer of carrier plate for crystallization reaction with the medium is provided inside the carrier.

[0008] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, the main through hole is adapted to the structure of the carrier, so that the carrier can stably penetrate into or out of the medium channel.

[0009] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, the main through hole is a circular structure, and the cross-section of the insertion end of the support member is a circular structure adapted to the main through hole.

[0010] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, the support component includes a pick-up frame and a reaction frame; the pick-up frame and the reaction frame are integrally formed, a handle is provided on the circumferential position of the pick-up frame, three layers of support plates are provided inside the reaction frame, the reaction frame as a whole is a hollow frame structure, and the support plates are fixed in the reaction frame.

[0011] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, a rubber pad is provided on the end face of the main through hole that contacts the support member, and the rubber pad is arranged around the circumferential position of the main through hole.

[0012] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, the medium channel is provided with a heating structure, a cooling structure and a temperature holding structure along its length; the heating structure and the cooling structure are arranged along the inner surface of the medium channel, and the temperature holding structure is located on the outer side of the medium channel.

[0013] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, the heating structure is an electric heating grid, which is disposed on the inner surface of the medium channel.

[0014] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, the cooling structure is a water-cooled pipeline, which is wound around the outer wall of the medium channel.

[0015] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, the temperature-holding structure is heat-insulating cotton, which is disposed on the outer wall of the medium channel.

[0016] Based on the structure of the lithium-ion extraction device based on the secondary crystallization method described above, a temperature detector is installed inside the medium channel, and multiple temperature detectors are arranged in a ring around the circumference of the medium channel. In summary, due to the adoption of the above technical solution, the beneficial effects of this invention are:

[0017] 1. In this method, the target crystal is placed on a support plate, and the support component is inserted into the main through hole, allowing the target crystal to contact the medium and undergo an adsorption reaction to extract the target component from the medium. For example, a stable crystal nucleus can be placed on the support plate, and a lithium-ion solution at a certain temperature can be passed through the medium channel. When the stable crystal is placed on the support plate, the lithium ions in the solution are adsorbed by the crystal nucleus to form a larger crystal nucleus. When the flow rate is very slow, a stable potential field will be formed around the stable crystal nucleus. This potential field has a stronger attraction to lithium ions and carbonate ions, thereby repelling other impurities in the solution and achieving the purpose of lithium ion extraction. This method has a simple structure, low cost, and does not require chemical reagents. It has high environmental friendliness and higher purity of lithium ions extracted compared to traditional methods, making it very suitable for industrial applications. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0019] Figure descriptions: 1. Medium channel; 2. Supporting component; 3. Main through hole; 4. Support plate; 5. Heating structure; 6. Cooling structure; 7. Temperature holding structure; 8. Temperature detector; 9. Crystal nucleus; 21. Pick-up frame; 22. Reaction frame; 23. Handle; 24. Rubber pad. Detailed Implementation

[0020] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0024] Example 1

[0025] like Figure 1 As shown, the present invention provides a technical solution:

[0026] A lithium-ion extraction device based on secondary crystallization includes, but is not limited to, a medium channel and a carrier; the medium channel is provided with a main through hole for the carrier to enter and exit, and at least a part of the structure of the carrier can penetrate the main through hole and extend into the medium channel to contact the medium; the structure of the carrier extending into the medium channel is a hollow frame structure, and at least one layer of carrier plate for crystallization reaction with the medium is provided inside the carrier.

[0027] Based on the above structure, during use, the target crystal is placed on the support plate, and the support component is inserted into the main through hole, allowing the target crystal to contact the medium and undergo an adsorption reaction to extract the target component from the medium. For example, a stable crystal nucleus can be placed on the support plate, and a lithium-ion solution at a certain temperature can be passed through the medium channel. When the stable crystal is placed on the support plate, the lithium ions in the solution are adsorbed by the crystal nucleus to form a larger crystal nucleus. When the flow rate is very slow, a stable potential field will be formed around the stable crystal nucleus. This potential field has a stronger attraction to lithium ions and carbonate ions, thereby repelling other impurities in the solution and achieving the purpose of lithium ion extraction. This solution has a simple structure, low cost, and does not require chemical reagents, has high environmental friendliness, and produces lithium ions with higher purity than traditional methods, making it very suitable for industrial applications.

[0028] As an example, the main through hole is adapted to the structure of the carrier, so that the carrier can stably penetrate into or out of the medium channel; the main through hole can be a rectangular structure, and the cross-section of the insertion end of the carrier can be a rectangular structure adapted to the main through hole, or the main through hole can be an elliptical structure, and the cross-section of the insertion end of the carrier can be an elliptical structure adapted to the main through hole.

[0029] Preferably, the main through hole is a circular structure, and the cross-section of the insertion end of the support member can be a circular structure adapted to the main through hole. The circular support member can rotate in the circular main through hole, which intensifies the crystallization of the crystal and increases the reaction rate.

[0030] As an example, the carrier may include a pick-up frame and a reaction frame; the pick-up frame and the reaction frame are integrally formed, and a handle may be provided on the circumferential position of the pick-up frame. Three layers of carrier plates are provided inside the reaction frame, and the reaction frame as a whole is a hollow frame structure, with the carrier plates fixed in the reaction frame.

[0031] Based on the above structure, the handle allows for rapid movement of the carrier, enabling it to be quickly and stably inserted into the main through hole. The handle also allows the carrier to be rotated, accelerating the reaction process.

[0032] As an example, a rubber pad can be provided on the end face of the main through hole that contacts the carrier, with the rubber pad positioned circumferentially around the main through hole.

[0033] Based on the above structure, by setting a rubber pad, the handle can be spaced a certain distance from the medium channel, making it convenient to pick up the handle. At the same time, it can also avoid rigid contact between the handle and the outer surface of the medium channel, thus preventing damage to the medium channel.

[0034] Example 2

[0035] Based on the above embodiment 1, this solution is similar to embodiment 1, except that in this embodiment, the medium channel is provided with a heating structure, a cooling structure and a holding structure along its length; the heating structure and the cooling structure can be provided along the inner surface of the medium channel, and the holding structure is provided on the outer side of the medium channel.

[0036] Based on the above structure, the medium in the medium channel is heated or cooled by the heating and cooling structures to regulate its temperature and keep it within a suitable range. The temperature holding structure can isolate the medium channel from the ambient air temperature as much as possible, avoiding the influence of ambient temperature on the fluid medium.

[0037] As an example, the heating structure can be an electric heating mesh, which is placed on the inner surface of the medium channel; the cooling structure can be a water-cooled pipeline, which is wrapped around the outer wall of the medium channel; and the temperature-holding structure can be insulation cotton, which is placed on the outer wall of the medium channel.

[0038] Based on the above structure, the fluid medium is heated by an electric heating grid, cooled by a water cooling pipeline, and its temperature is maintained by insulation cotton.

[0039] As an example, a temperature detector can be installed inside the medium channel. Multiple temperature detectors are arranged in a ring around the circumference of the medium channel. The internal temperature can be known through the temperature detector, which facilitates the detection of the temperature of the fluid medium.

[0040] As an example, the carrier can be glass, plastic, metal or other materials, but glass is preferred; the medium channel can be made of plastic pipe or metal pipe.

[0041] In this solution, the temperature of the fluid medium can be adjusted by an electric heating grid or a water-cooled pipeline. By adjusting the temperature and solution flow rate, the extraction efficiency of lithium ions can be enhanced. Increasing the number of stable crystal nuclei can also improve the extraction efficiency of lithium ions. Rotating the support component can also improve the extraction efficiency of lithium ions to some extent.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lithium-ion extraction device based on secondary crystallization, characterized in that: The system includes a medium channel and a carrier component. The medium channel has a main through-hole for the carrier component to enter and exit. At least a portion of the carrier component's structure can penetrate the main through-hole and extend into the medium channel to contact the medium. The structure of the carrier component extending into the medium channel is a hollow frame structure. At least one layer of carrier plate for supporting crystal nuclei is provided inside the carrier component. The carrier component includes a pick-up frame and a reaction frame. The pick-up frame and reaction frame are integrally formed. A handle is provided on the circumferential position of the pick-up frame. Three layers of carrier plates are provided inside the reaction frame. The reaction frame is an overall hollow frame structure, and the carrier plates are fixed within the reaction frame. The medium channel has a heating structure, a cooling structure, and a temperature-holding structure along its length. The heating and cooling structures are arranged along the inner surface of the medium channel, and the temperature-holding structure is located on the outer side of the medium channel. The main through-hole is adapted to the structure of the carrier component, allowing the carrier component to stably enter or exit the medium channel. The main through-hole is a circular structure, and the cross-section of the insertion end of the carrier component is a circular structure adapted to the main through-hole.

2. The lithium-ion extraction device based on secondary crystallization as described in claim 1, characterized in that: A rubber pad is provided on the end face of the main through hole that contacts the bearing member, and the rubber pad is arranged around the circumference of the main through hole.

3. The lithium-ion extraction device based on secondary crystallization as described in claim 2, characterized in that: The heating structure is an electric heating mesh, which is disposed on the inner surface of the medium channel.

4. The lithium-ion extraction device based on secondary crystallization as described in claim 3, characterized in that: The cooling structure is a water-cooled pipeline, which is wrapped around the outer wall of the medium channel.

5. The lithium-ion extraction device based on secondary crystallization as described in claim 4, characterized in that: The temperature-holding structure is thermal insulation cotton, which is placed on the outer wall of the medium channel.

6. The lithium-ion extraction device based on secondary crystallization as described in claim 5, characterized in that: A temperature detector is installed inside the medium channel, and multiple temperature detectors are arranged in a ring around the circumference of the medium channel.

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