An integrated extraction tank with reflux structure

Abstract

The present application provides an integrated extraction tank with a reflux structure, which belongs to the field of metal extraction technology for new energy batteries, and includes a tank body, wherein the tank body has multiple extraction parts, and the extraction parts include: a chamber, one side of the chamber is connected to a first partition, one side of the first partition is connected to a second partition and a third partition, and one side of the second partition is connected to a fourth partition; the heavy phase can be discharged into the reflux channel through the reflux component, and the heavy phase in the reflux channel can flow to the mixing chamber of this stage through the reflux port, so as to achieve the effect of reflowing the heavy phase. Compared with traditional extraction tanks, it does not require multiple pipeline connections, which solves the problem in the prior art that the extraction tank has too many pipelines connected to the outside, the pipelines will be redundant, easy to leak and difficult to maintain.

Description

Technical Field

[0001] The present application relates to the technical field of metal extraction from new energy batteries, and in particular to an integrated extraction tank with a reflux structure. Background Art

[0002] With the rapid development of the new energy industry, battery-grade cobalt sulfate, battery-grade lithium carbonate, battery-grade nickel sulfate, and battery-grade manganese sulfate have become essential raw materials for the manufacture of lithium-ion battery cathode materials. These raw materials are also highly valuable resources found in used batteries. The extraction process is essential for recovering metals from battery waste. By employing scientific recycling and processing technologies, these materials can be separated from used batteries and used in the manufacture of new batteries, achieving efficient resource utilization and conservation while also reducing dependence on mineral resources and environmental pollution. Therefore, battery-grade cobalt sulfate, battery-grade lithium carbonate, battery-grade nickel sulfate, and battery-grade manganese sulfate play an important role in the development of the new energy industry and in battery recycling and reuse, and are key factors in promoting the development of a circular economy.

[0003] Take battery-grade nickel sulfate as an example. It is a nickel salt primarily used in the nickel-cobalt-manganese (NiCoMn) lithium-ion battery industry for the preparation of NiCoMn / Al precursors. The main difference between battery-grade nickel sulfate and electroplating-grade nickel sulfate lies in the cobalt and magnetic contaminant content. Electroplating-grade nickel sulfate has specific cobalt (Co) content requirements, generally requiring a cobalt content of less than 0.05% or as low as possible, while battery-grade nickel sulfate requires a lower magnetic contaminant content. Battery-grade nickel sulfate solutions must contain no more than 0.00008 g / L of magnetic contaminants. Extraction, on the other hand, utilizes the distribution equilibrium between two immiscible liquids to transfer a solute from one liquid to the other. The principle of extraction is based on the affinity of substances—that is, the different solubility of substances in different solvents—to achieve separation. There are many extraction methods, primarily single-stage and multi-stage. Single-stage extraction involves a single extraction operation, while multi-stage extraction involves multiple extractions. Multi-stage extraction can improve extraction efficiency and separation effectiveness, thereby increasing nickel purity and recovery. Commonly used extractants in the production of battery-grade nickel sulfate include organophosphates, alcohols, and carboxylic acids. Organophosphates, such as D2EHPA, PC-88A, and P507, are among the most widely used. These compounds offer excellent selectivity and extraction efficiency, effectively extracting battery-grade nickel sulfate from nickel salt solutions.

[0004] There are many types of extraction equipment, such as extraction tanks, extraction towers, and extraction centrifuges. Different devices have different structures and performance characteristics, suitable for different extraction conditions and requirements. The production process of battery-grade nickel sulfate typically requires multiple material exchange steps, including alkaline soap solution, soap transfer, washing, extraction, nickel washing, impurity stripping, hydrochloric acid stripping, and chlorine washing with clean water. To improve production efficiency and production quality, box-type extraction tanks are considered a more suitable equipment, integrating these production steps into a single device. Box-type extraction tanks are multi-stage extraction equipment composed of multiple identical or different extraction tanks. Box-type extraction tanks are characterized by their simple structure and easy operation, making them suitable for extraction processes with smaller processing volumes and relatively stable extraction conditions. The main components of a box-type extraction tank are a mixing chamber and a clarification chamber. The mixing chamber is equipped with an agitator to promote uniform mixing of the materials, while the clarification chamber is a large empty chamber that allows for static separation of the mixed liquids.

[0005] During the extraction process, the organic phase flows step by step, while the underlying aqueous phase comprises a wide variety of components, including liquid alkali saponification solution, soap-transfer solution, washing solution, extraction stock solution, backwash solution, stripping solution, hydrochloric acid wash solution, and clean water wash solution. These solutions require reflux, but conventional extraction tanks typically require multiple additional pipe connections to achieve this. This approach has the disadvantage of creating redundant and leaky pipes, as well as inconvenient subsequent maintenance. Summary of the Invention

[0006] The present application provides an integrated extraction tank with a reflux structure, which discharges the heavy phase into the reflux channel through the reflux component. The heavy phase in the reflux channel can flow into the mixing chamber of this stage through the reflux port, thereby achieving the effect of reflowing the heavy phase.

[0007] An embodiment of the present application provides an integrated extraction tank with a reflux structure, comprising a tank body having multiple extraction sections, each of which comprises:

[0008] a chamber, wherein one side of the chamber is connected to a first partition plate, one side of the first partition plate is connected to a second partition plate and a third partition plate, and one side of the second partition plate is connected to a fourth partition plate;

[0009] Two flow ports are respectively opened on two sides of the chamber;

[0010] The reflux port and the flow port are both opened on one side of the first partition;

[0011] The first, second, third and fourth partitions separate the chamber into a mixing chamber, a clarifying chamber, a reflux channel, a lower channel and a lower latent chamber. Two adjacent flow ports on a plurality of the chambers are connected. The reflux channel is connected to the mixing chamber via the reflux port, and the lower channel is connected to the mixing chamber via the flow port. Two adjacent flow ports on every two chambers are connected.

[0012] A mixing component, disposed in the mixing chamber, for mixing raw materials;

[0013] A reflux component is provided in the clarification chamber and is used to guide the heavy phase into the reflux channel;

[0014] The overflow component is arranged in the clarification chamber and is used to guide the light phase into the lower-stage submerged chamber.

[0015] Preferably, the reflux component includes:

[0016] a reflux pipe disposed in the clarification chamber, the top of the reflux pipe being closed and the bottom being open, one side of the reflux pipe being connected to a first connecting pipe, the first connecting pipe being in communication with the reflux channel;

[0017] A rotating shaft is provided on the return pipe, and a plurality of rotating plates are connected to the outer wall of the rotating shaft;

[0018] A driving member is provided on the return pipe and is used for driving the rotating shaft to rotate.

[0019] Preferably, the driving member includes:

[0020] The first drive motor is arranged at one side of the return pipe, and a first chain is connected between the drive shaft of the first drive motor and the rotating shaft.

[0021] Preferably, the overflow component includes:

[0022] An overflow pipe is provided in the clarification chamber, the bottom end of the overflow pipe is higher than the bottom end of the return pipe, one side of the overflow pipe is connected to a second connecting pipe, and the second connecting pipe is communicated with the lower-level submerged chamber.

[0023] Preferably, the overflow component further includes:

[0024] A sliding tube is provided in the overflow tube, the outer side wall of the sliding tube is connected to a limit slider, and the inner side wall of the overflow tube is provided with a limit sliding groove adapted to the limit slider;

[0025] A screw rod is arranged in the overflow pipe, a fixing block is threadedly connected to the screw rod, and the fixing block is fixedly sleeved in the sliding tube.

[0026] Preferably, the mixing component comprises:

[0027] a bracket, disposed in the mixing chamber;

[0028] A rotating shaft is provided on the bracket, and a stirring blade is provided on the rotating shaft;

[0029] The second driving motor is arranged at one side of the chamber, and a second chain is connected between the driving shaft of the second driving motor and the rotating shaft.

[0030] Preferably, a baffle is connected to one side of the first partition, and the baffle is located in the clarification chamber.

[0031] Preferably, a first guide plate is connected to one side of the reflux channel.

[0032] Preferably, a second guide plate is connected to one side of the lower channel.

[0033] The present application provides an integrated extraction tank with a reflux structure. By setting up a chamber, when in use, raw materials can be injected into the mixing chamber, and the raw materials are mixed by the provided mixing components and then discharged into the clarification chamber. Multiple extraction parts form a tank body, which can form multi-stage extraction. When the light phase needs to overflow to the next-stage extraction part, the overflow component can be used to discharge the light phase in the clarification chamber into the lower-stage potential chamber. The light phase in the lower potential chamber can flow through the flow port into the lower-stage channel on the next-stage extraction part, and the light phase in the lower channel can flow into the mixing chamber of the next stage through the flow port, so as to achieve the effect of overflowing the light phase into the next-stage extraction part. When the heavy phase needs to reflux in the current-stage extraction part, the heavy phase can be discharged into the reflux channel through the reflux component, and the heavy phase in the reflux channel can flow into the mixing chamber of the current stage through the reflux port, so as to achieve the effect of reflux of the heavy phase. Compared with the traditional extraction tank, the device does not require multiple pipeline connections, avoids the problem of too many pipelines connected to the outside of the extraction tank in the prior art, and has good sealing and easy maintenance.

[0034] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 This is a schematic diagram of the overall structure provided by the embodiment of the present application;

[0037] Figure 2This is a schematic diagram of the extraction unit structure provided in an embodiment of the present application;

[0038] Figure 3 Schematic diagram of the structure of the second guide plate provided in an embodiment of the present application;

[0039] Figure 4 This is a schematic structural diagram of a first guide plate provided in an embodiment of the present application;

[0040] Figure 5 This is a schematic diagram of the return pipe structure provided in an embodiment of the present application;

[0041] Figure 6 This is a schematic diagram of the overflow pipe structure provided in an embodiment of the present application.

[0042] Explanation of main components and symbols: 100, tank body; 101, extraction part; 102, chamber; 103, first partition; 104, second partition; 105, third partition; 106, fourth partition; 107, flow port; 108, reflux port; 109, circulation port; 110, mixing chamber; 111, clarification chamber; 112, reflux channel; 113, lower channel; 114, lower submerged chamber;

[0043] 200, reflux pipe; 201, first connecting pipe; 202, rotating shaft; 203, rotating plate;

[0044] 300, first drive motor; 301, first chain;

[0045] 400, overflow pipe; 401, second connecting pipe; 402, sliding pipe; 403, limiting slider; 404, limiting slide; 405, screw rod; 406, fixing block;

[0046] 500, bracket; 501, rotating shaft; 502, stirring blade; 503, second driving motor; 504, second chain;

[0047] 600, baffle;

[0048] 700, first guide plate; 701, second guide plate. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0050] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0051] It should be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0052] It should be understood that, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. For example, the first groove and the second groove are merely used to distinguish different grooves and do not limit their order. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or execution order, and the words "first" and "second" do not necessarily mean different.

[0053] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0054] During the extraction process, the organic phase flows through the entire extraction process step by step. There are many types of heavy phases, and the solution requires a certain amount of reflux. However, the extraction tank in the existing technology usually requires additional multiple pipe connections. Externally connecting multiple pipes will cause redundancy in the pipes, and the pipes are prone to leakage.

[0055] refer to Figures 1-6 In order to solve the above problems, the present application provides an integrated extraction tank with a reflux structure, which discharges the heavy phase into the reflux channel 112 through the reflux component. The heavy phase in the reflux channel 112 can flow into the mixing chamber 110 of this stage through the reflux port 108, thereby achieving the effect of reflowing the heavy phase.

[0056] The present application provides an integrated extraction tank with a reflux structure, comprising a tank body 100 having a plurality of extraction sections 101, each of which comprises:

[0057] A chamber 102, one side of the chamber 102 is connected to a first partition 103, one side of the first partition 103 is connected to a second partition 104 and a third partition 105, and one side of the second partition 104 is connected to a fourth partition 106;

[0058] Two flow ports 107 are respectively provided on both sides of the chamber 102;

[0059] The reflux port 108 and the flow port 109 are both opened on one side of the first partition 103;

[0060] The first partition 103, the second partition 104, the third partition 105 and the fourth partition 106 separate the chamber 102 into a mixing chamber 110, a clarifying chamber 111, a reflux channel 112, a lower channel 113 and a lower latent chamber 114. Two adjacent flow ports 107 on multiple chambers 102 are connected, the reflux channel 112 is connected to the mixing chamber 110 through the reflux port 108, and the lower channel 113 is connected to the mixing chamber 110 through the flow port 109. The two adjacent flow ports 107 on every two chambers 102 are connected;

[0061] A mixing component, disposed in the mixing chamber 110, for mixing raw materials;

[0062] A reflux component is provided in the clarification chamber 111 and is used to guide the heavy phase into the reflux channel 112;

[0063] The overflow component is provided in the clarifying chamber 111 and is used to guide the light phase into the lower-stage latent chamber 114;

[0064] By setting the chamber 102, when in use, the raw materials can be injected into the mixing chamber 110, and the raw materials are mixed by the provided mixing components and then discharged into the clarifying chamber 111. The multiple extraction parts 101 form a tank body 100, and the tank body 100 can form a multi-stage extraction. When the light phase needs to overflow to the next extraction part 101, the overflow component can be used to discharge the light phase in the clarifying chamber 111 into the lower latent chamber 114. The light phase in the lower latent chamber 114 can flow through the flow port 107 to the lower channel 113 on the next extraction part 101. The light phase in the lower channel 113 can flow through the flow port 107 to the lower channel 113 on the next extraction part 101. The overflow port 109 flows into the mixing chamber 110 of the next stage, achieving the effect of overflowing the light phase into the extraction section 101 of the next stage. When the heavy phase needs to reflux in the extraction section 101 of this stage, the heavy phase can be discharged into the reflux channel 112 through the reflux component. The heavy phase in the reflux channel 112 can flow to the mixing chamber 110 of this stage through the reflux port 108, achieving the effect of reflux of the heavy phase. Compared with the traditional extraction tank, it does not require multiple pipeline connections, which solves the problem of the extraction tank in the prior art that too many pipelines are connected to the outside, the pipelines will be redundant, easy to leak and difficult to maintain.

[0065] In some embodiments, the backflow component includes:

[0066] The reflux pipe 200 is provided in the clarification chamber 111. The top of the reflux pipe 200 is closed and the bottom is open. One side of the reflux pipe 200 is connected to a first connecting pipe 201, which is in communication with the reflux channel 112.

[0067] The rotating shaft 202 is provided on the return pipe 200, and the outer wall of the rotating shaft 202 is connected to a plurality of rotating plates 203;

[0068] A driving member, provided on the return pipe 200, for driving the rotating shaft 202 to rotate;

[0069] By providing the rotating shaft 202 , the rotating shaft 202 can be rotated by the driving member during use. The rotation of the rotating shaft 202 can rotate the rotating plate 203 . The rotation of the rotating plate 203 can extract the heavy phase in the clarification chamber 111 into the reflux channel 112 , thereby allowing the heavy phase to flow back into the mixing chamber 110 .

[0070] In some embodiments, the driver comprises:

[0071] The first drive motor 300 is provided on one side of the return pipe 200 , and a first chain 301 is connected between the drive shaft of the first drive motor 300 and the rotating shaft 202 ;

[0072] By providing the first driving motor 300 , the first driving motor 300 can drive the rotating shaft 202 to rotate via the first chain 301 .

[0073] In some embodiments, the overflow component comprises:

[0074] The overflow pipe 400 is provided in the clarification chamber 111. The bottom end of the overflow pipe 400 is higher than the bottom end of the return pipe 200. One side of the overflow pipe 400 is connected to a second connecting pipe 401, which is in communication with the lower submerged chamber 114.

[0075] By providing the overflow pipe 400, when the light phase liquid level in the clarification chamber 111 is higher than the second connecting pipe 401, the light phase can flow into the lower-stage submerged chamber 114 through the overflow pipe 400 and the second connecting pipe 401;

[0076] In some embodiments, the overflow component further comprises:

[0077] The sliding tube 402 is disposed in the overflow tube 400. The outer wall of the sliding tube 402 is connected to the limit slider 403. The inner wall of the overflow tube 400 is provided with a limit slot 404 adapted to the limit slider 403.

[0078] The screw rod 405 is provided in the overflow pipe 400. The screw rod 405 is threadedly connected to a fixing block 406. The fixing block 406 is fixedly sleeved in the sliding tube 402.

[0079] By providing the screw rod 405, the position of the sliding tube 402 can be adjusted up and down by rotating the screw rod 405, so that the flow rate of the light phase can be adjusted.

[0080] In some embodiments, the mixing component comprises:

[0081] The bracket 500 is disposed in the mixing chamber 110;

[0082] A rotating shaft 501 is provided on the bracket 500 and a stirring blade 502 is provided on the rotating shaft 501;

[0083] A second drive motor 503 is provided at one side of the chamber 102 , and a second chain 504 is connected between the drive shaft of the second drive motor 503 and the rotating shaft 501 ;

[0084] By providing a second drive motor 503, when in use, the drive shaft of the second drive motor 503 rotates to drive the rotating shaft 501 to rotate via the second chain 504, so that the stirring blade 502 can mix the raw materials in the mixing chamber 110;

[0085] In some embodiments, a baffle 600 is connected to one side of the first partition 103 , and the baffle 600 is located in the clarification chamber 111 ;

[0086] By providing the baffle 600 , it is possible to prevent the liquid in the mixing chamber 110 from excessively impacting the liquid in the clarification chamber 111 when the liquid flows into the clarification chamber 111 .

[0087] In some embodiments, a first guide plate 700 is connected to one side of the return channel 112;

[0088] By providing the first guide plate 700 , the heavy phase in the reflux channel 112 can be guided into the mixing chamber 110 .

[0089] In some embodiments, a second guide plate 701 is connected to one side of the lower channel 113;

[0090] By providing the second guide plate 701 , the light phase in the lower channel 113 can be guided into the mixing chamber 110 .

[0091] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An integrated extraction tank with a reflux structure, characterized in that: The invention comprises a tank body, wherein the tank body has a plurality of extraction parts, wherein the extraction parts include: a chamber, wherein one side of the chamber is connected to a first partition plate, one side of the first partition plate is connected to a second partition plate and a third partition plate, and one side of the second partition plate is connected to a fourth partition plate; Two flow ports are respectively opened on two sides of the chamber; The reflux port and the flow port are both opened on one side of the first partition; The first, second, third and fourth partitions separate the chamber into a mixing chamber, a clarifying chamber, a reflux channel, a lower channel and a lower latent chamber. Two adjacent flow ports on a plurality of the chambers are connected. The reflux channel is connected to the mixing chamber via the reflux port, and the lower channel is connected to the mixing chamber via the flow port. Two adjacent flow ports on every two chambers are connected. A mixing component, disposed in the mixing chamber, for mixing raw materials; A reflux component is provided in the clarification chamber and is used to guide the heavy phase into the reflux channel; An overflow component is provided in the clarification chamber and is used to guide the light phase into the lower submerged chamber; The reflux component includes: a reflux pipe disposed in the clarification chamber, the top of the reflux pipe being closed and the bottom being open, one side of the reflux pipe being connected to a first connecting pipe, the first connecting pipe being in communication with the reflux channel; A rotating shaft is provided on the return pipe, and a plurality of rotating plates are connected to the outer wall of the rotating shaft; a driving member, provided on the return pipe, for driving the rotating shaft to rotate; The overflow component comprises: an overflow pipe disposed in the clarification chamber, wherein the bottom end of the overflow pipe is higher than the bottom end of the return pipe, and a second connecting pipe is connected to one side of the overflow pipe, and the second connecting pipe is in communication with the lower-stage submerged chamber; The raw materials are mixed by the provided mixing components and then discharged into the clarification chamber; the light phase in the clarification chamber is discharged into the lower-stage latent chamber by the overflow component, and the light phase in the lower-stage latent chamber flows into the lower-stage channel on the next-stage extraction part through the flow port, and the light phase in the lower channel flows into the mixing chamber of the next stage through the flow port; the heavy phase is discharged into the reflux channel by the reflux component, and the heavy phase in the reflux channel flows into the mixing chamber of this stage through the reflux port.

2. The integrated extraction tank with a reflux structure according to claim 1, characterized in that: The driving member includes: The first drive motor is arranged at one side of the return pipe, and a first chain is connected between the drive shaft of the first drive motor and the rotating shaft.

3. The integrated extraction tank with a reflux structure according to claim 1, characterized in that: The overflow component also includes: A sliding tube is provided in the overflow tube, the outer side wall of the sliding tube is connected to a limit slider, and the inner side wall of the overflow tube is provided with a limit sliding groove adapted to the limit slider; A screw rod is arranged in the overflow pipe, a fixing block is threadedly connected to the screw rod, and the fixing block is fixedly sleeved in the sliding tube.

4. The integrated extraction tank with a reflux structure according to claim 1, characterized in that: The mixing component comprises: a bracket, disposed in the mixing chamber; A rotating shaft is provided on the bracket, and a stirring blade is provided on the rotating shaft; The second driving motor is arranged at one side of the chamber, and a second chain is connected between the driving shaft of the second driving motor and the rotating shaft.

5. The integrated extraction tank with a reflux structure according to claim 1, characterized in that: A baffle is connected to one side of the first partition, and the baffle is located in the clarification chamber.

6. The integrated extraction tank with a reflux structure according to claim 1, characterized in that: One side of the reflux channel is connected with a first guide plate.

7. The integrated extraction tank with a reflux structure according to claim 1, characterized in that: One side of the lower channel is connected with a second guide plate.

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