Combined device for extracting lithium from lithium-containing salt lake brine

Abstract

The utility model relates to the field of salt lake brine lithium extraction, and discloses a lithium-containing salt lake brine lithium extraction combined device which comprises an adsorption tank, a liquid inlet is formed in the middle of one side of the adsorption tank, a liquid outlet is formed in the middle of the other side of the adsorption tank, and a plurality of fixed inner cavities are formed in the middle of the front end face of the adsorption tank. The liquid inlet and the liquid outlet are communicated and connected with the multiple fixed inner cavities, adsorption cabins are symmetrically arranged in the fixed inner cavities, a plurality of fixing holes are formed in the middle of one side of each adsorption cabin, a fixing groove is formed in one side of each fixing hole, and disc-shaped flow guide grooves are formed in the middle of the other sides, close to each other, of the two adsorption cabins; an adsorbent is placed in the disc-shaped diversion trench; through the adsorption cabins symmetrically arranged in the fixed inner cavity, the disc-shaped flow guide grooves, the through connecting holes and other structures, the flowing path of brine in the device is prolonged, the contact time of the brine and an adsorbent is prolonged, the brine adsorption sufficiency is improved, and the overall lithium extraction efficiency of salt lake brine is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the field of lithium extraction from salt lake brine, in particular to a lithium-containing salt lake brine lithium extraction combined device. BACKGROUND

[0002] Lithium extraction from lithium-containing salt lake brine refers to an industrialized process of separating and enriching lithium ions from salt lake brine through physical, chemical or biological methods, and finally preparing high-purity lithium compounds (such as lithium carbonate and lithium hydroxide). The adsorption process of lithium extraction from lithium-containing salt lake brine refers to a process of capturing lithium ions from brine through a selective adsorbent (such as an aluminum adsorbent and an ion sieve), and then separating and enriching lithium elements through an eluent, and finally preparing lithium carbonate. The process has the advantages of high resource utilization rate and environmental friendliness, and has become one of the mainstream technologies for lithium extraction from high-magnesium-lithium salt lakes.

[0003] However, when the brine is adsorbed by the adsorption tank, the brine in the traditional adsorption tank flows along a straight line, and the contact time with the adsorbent is short, so that the lithium ions are not fully adsorbed. If the adsorption is not sufficient, the tail brine needs to be returned to the adsorption tank for secondary treatment multiple times, which not only prolongs the production cycle, but also increases the energy consumption and equipment loss.

[0004] In view of the above-mentioned related technologies, the inventors believe that the adsorption process has the defect that the brine is not fully adsorbed when extracting lithium carbonate from the brine. Therefore, a lithium-containing salt lake brine lithium extraction combined device is provided to solve the above problems. Content of the utility model

[0005] In order to solve the problem that the adsorption process is not fully adsorbed when extracting lithium carbonate from the brine, the application provides a lithium-containing salt lake brine lithium extraction combined device.

[0006] The lithium-containing salt lake brine lithium extraction combined device provided by the application adopts the following technical scheme:

[0007] A lithium-containing salt lake brine lithium extraction combined device, comprising an adsorption tank, a liquid inlet is arranged in the middle of one side of the adsorption tank, a liquid outlet is arranged in the middle of the other side of the adsorption tank, a plurality of fixed cavities are formed in the middle of the front end face of the adsorption tank, the liquid inlet and the liquid outlet are connected with the plurality of fixed cavities, adsorption cabin bodies are symmetrically arranged inside the fixed cavities, a plurality of fixed holes are formed in the middle of one side of the adsorption cabin bodies, a fixed groove is formed in one side of the fixed hole, a disc-shaped flow guide groove is formed in the middle of the other side of the two adsorption cabin bodies which are close to each other, an adsorbent is placed inside the disc-shaped flow guide groove, a through connection hole is formed in the bottom of the left single adsorption cabin body and the top of the right single adsorption cabin body between the fixed groove and the disc-shaped flow guide groove, and a connecting mechanism is further arranged on the outer surface of the adsorption cabin body, which is used for abutting the two adsorption cabin bodies.

[0008] Preferably, the connecting mechanism comprises a limiting sleeve, the limiting sleeve is clamped at one end of the two symmetrically arranged adsorption cabin bodies, a limiting cover plate is installed at the front end face of the two symmetrically arranged adsorption cabin bodies, a sealing gasket is welded at one end of the limiting cover plate, threaded grooves are formed at the upper and lower end edges of the front end face of the adsorption cabin body, and a fastening bolt is screwed at one end of the limiting cover plate extending into the threaded groove.

[0009] Preferably, a first clamping piece is fixedly connected to the front end face of the limiting cover plate near the four corners, a second clamping piece is fixedly installed on the front end face of the adsorption tank near the four corners of the fixed inner cavity, and a limiting bolt is inserted into the first clamping piece and the second clamping piece.

[0010] Preferably, sealing grooves are formed in the middle of the inner wall of the fixed inner cavity on both sides, sealing clamping strips are welded on the outer side of the side edge of the adsorption cabin body near the plurality of fixing holes, and the sealing clamping strips extend to the inside of the sealing grooves on one side edge.

[0011] Preferably, a groove is formed at the opening of the front end face of the fixed inner cavity, the limiting cover plate is located in the groove, one end of the sealing gasket abuts against the inner wall edge of the groove, and the limiting cover plate and the sealing gasket are embedded in the groove.

[0012] In summary, the present application has the following beneficial technical effects:

[0013] Through the adsorption cabin bodies symmetrically arranged in the fixed inner cavity, the disc-shaped flow guide grooves, and the through connecting holes, the flow path of the brine in the device is lengthened, the contact time of the brine and the adsorbent is increased, and the adsorption sufficiency is improved. The connecting mechanism facilitates the installation, disassembly and maintenance of the adsorption cabin body, the sealing structure ensures the sealing of the device, reduces the leakage of the brine, and improves the lithium extraction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the application embodiment;

[0015] Figure 2 is a schematic diagram of the structure of the fixed inner cavity in the application embodiment;

[0016] Figure 3 is a schematic diagram of the structure of the fixed groove in the application embodiment;

[0017] Figure 4 is a schematic diagram of the structure of the adsorption cabin body in the application embodiment;

[0018] Figure 5 is a schematic diagram of the structure of the disc-shaped flow guide groove in the application embodiment;

[0019] Explanation of reference signs: 1, adsorption tank; 2, liquid inlet; 3, liquid outlet; 4, fixed inner cavity; 5, sealing groove; 6, adsorption cabin body; 7, sealing clamping strip; 8, fixed hole; 9, fixed groove; 10, disc-shaped flow guide groove; 11, through connecting hole; 12, limiting clamping sleeve; 13, limiting cover plate; 14, sealing washer; 15, threaded groove; 16, fastening bolt; 17, No. 1 clamping piece; 18, No. 2 clamping piece; 19, limiting bolt. DETAILED DESCRIPTION

[0020] The following will be described in detail in combination with the accompanying drawings. Figures 1-5 The present application is further described in detail.

[0021] The embodiment of the present application discloses a lithium-containing salt lake brine lithium extraction combined device. Referring to Figures 1-5 A lithium-containing salt lake brine lithium extraction combined device, comprising an adsorption tank 1, a liquid inlet 2 is arranged at the middle of one side of the adsorption tank 1, a liquid outlet 3 is arranged at the middle of the other side of the adsorption tank 1, a plurality of fixed inner cavities 4 are formed in the middle of the front end face of the adsorption tank 1, the liquid inlet 2 and the liquid outlet 3 are connected with the plurality of fixed inner cavities 4, the adsorption cabin bodies 6 are symmetrically arranged inside the fixed inner cavities 4, the sealing grooves 5 are formed in the middle of the two sides of the inner wall of the fixed inner cavities 4, the sealing clamping strips 7 are fused at the outer part of the plurality of fixed holes 8 close to the side of the adsorption cabin bodies 6, the side of the sealing clamping strips 7 extends to the inside of the sealing grooves 5, the sealing grooves 5 and the sealing clamping strips 7 are clamped with each other, the fixed holes 8 are formed in the middle of one side of the adsorption cabin bodies 6, the fixed grooves 9 are formed at one side of the fixed holes 8, the disc-shaped flow guide grooves 10 are formed in the middle of the other side of the two adsorption cabin bodies 6 close to each other, the adsorbents are placed in the disc-shaped flow guide grooves 10, the through connecting holes 11 are formed at the bottom of the left single adsorption cabin body 6 and the top of the right single adsorption cabin body 6 between the fixed grooves 9 and the disc-shaped flow guide grooves 10, and the connecting mechanisms are further arranged on the outer surface of the adsorption cabin bodies 6, which are used for butt-jointing the two adsorption cabin bodies 6.

[0022] The brine enters the adsorption tank 1 from the liquid inlet 2, flows into the adsorption cabin bodies 6 in the fixed inner cavities 4, the brine enters through the fixed holes 8 of the adsorption cabin bodies 6, and is in full contact with the adsorbents in the disc-shaped flow guide grooves 10, so that the lithium ions are captured by the adsorbents, the brine flows between the two adsorption cabin bodies 6 through the through connecting holes 11, the flow path of the brine in the device is prolonged, the contact time with the adsorbents is increased, and the adsorption fullness is improved.

[0023] Referring to Figure 4 and Figure 5The connecting mechanism comprises a limiting sleeve 12, the limiting sleeve 12 is clamped at one end of the two symmetrical adsorption cabin bodies 6, the front end face of the two symmetrical adsorption cabin bodies 6 is provided with a limiting cover plate 13, one end of the limiting cover plate 13 is provided with a sealing gasket 14, the upper and lower end faces of the front end face of the adsorption cabin body 6 are provided with threaded grooves 15, one end of the limiting cover plate 13 extends into the threaded groove 15 and is connected with a fastening bolt 16, the front end face of the fixed inner cavity 4 is provided with a groove, the limiting cover plate 13 is located in the groove, one end of the sealing gasket 14 abuts against the inner wall of the groove, and the limiting cover plate 13 and the sealing gasket 14 are embedded in the groove.

[0024] The limiting cover plate 13 is fixed with the adsorption cabin body 6 through the fastening bolt 16, and the limiting sleeve 12 is clamped at the other end of the adsorption cabin body 6, so that the two symmetrical adsorption cabin bodies 6 can be stably connected, and the adsorbent in the disc-shaped flow guide groove 10 can be kept in a stable placement state.

[0025] With reference to Figure 4 and Figure 5 , the front end face of the limiting cover plate 13 is provided with a first clamping part 17 near the four corners, the front end face of the adsorption tank 1 is provided with a second clamping part 18 near the four corners of the fixed inner cavity 4, and the first clamping part 17 and the second clamping part 18 are both provided with a limiting pin 19.

[0026] The first clamping part 17 and the second clamping part 18 cooperate with the limiting pin 19, so that the adsorption cabin body 6 can be stably installed, the sealing gasket 14 ensures the sealing property of the device, and the leakage of the brine is prevented; during maintenance, the limiting pin 19 can be disassembled, and the adsorbent in the adsorption cabin body 6 can be conveniently replaced.

[0027] The working principle of the lithium-containing salt lake brine lithium extraction combined device is as follows: when the lithium-containing salt lake brine lithium extraction combined device works, the brine enters the adsorption tank 1 from the liquid inlet 2, flows into the adsorption cabin body 6 in the fixed inner cavity 4, the brine enters through the fixing hole 8 of the adsorption cabin body 6, fully contacts with the adsorbent in the disc-shaped flow guide groove 10, the lithium ions are captured by the adsorbent, the brine flows between the two adsorption cabin bodies 6 through the through connection hole 11, the flow path of the brine in the device is prolonged, the contact time with the adsorbent is increased, and the adsorption sufficiency is improved; in the connecting mechanism, the sealing strip 7 is clamped with the sealing groove 5, the limiting cover plate 13 is fixed with the adsorption cabin body 6 through the fastening bolt 16, the first clamping part 17 and the second clamping part 18 cooperate with the limiting pin 19, so that the adsorption cabin body 6 can be stably installed, the sealing gasket 14 ensures the sealing property of the device, and the leakage of the brine is prevented; during maintenance, the limiting pin 19 and the fastening bolt 16 can be disassembled, and the adsorbent in the adsorption cabin body 6 can be conveniently replaced, so that the device can continuously and efficiently work. Through the above-mentioned structure, the problem of insufficient adsorption of the brine in the existing adsorption process is solved, and the lithium extraction efficiency of the lithium-containing salt lake brine is improved.

[0028] Finally should be explained a few points are: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the term "installation", "connected", "connection" should be broad, can be mechanical or electrical connection, but also can be two elements inside the communication, can be directly connected, "up", "down", "left", "right" and so on, only for indicating the relative position relationship, when the absolute position of the described object changes, the relative position relationship may change;

[0029] Second: the utility model discloses the embodiment in the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of not conflicting, the same embodiment and different embodiments of the utility model can be combined with each other;

[0030] Finally: the above only for the preferred embodiment of the utility model has, and does not for limiting the utility model, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

[0031] The above are the preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application, should be covered within the scope of protection of the present application.

Claims

1. A lithium-containing salt lake brine lithium extraction combined device, comprising an adsorption tank (1), a liquid inlet (2) is arranged at the middle of one side of the adsorption tank (1), and a liquid outlet (3) is arranged at the middle of the other side of the adsorption tank (1), characterized in that: The front end face of the adsorption tank (1) is provided with a plurality of fixed cavities (4) in the middle part, the liquid inlet (2) and the liquid outlet (3) are connected with the plurality of fixed cavities (4), the fixed cavities (4) are symmetrically provided with adsorption cabin bodies (6) inside, a plurality of fixed holes (8) are formed in the middle part of one side of the adsorption cabin body (6), a fixed groove (9) is formed in one side of the fixed hole (8), disc-shaped flow guide grooves (10) are formed in the middle part of the other side of the two adsorption cabin bodies (6) close to each other, adsorbents are placed in the disc-shaped flow guide grooves (10), through holes (11) are formed in the left single adsorption cabin body (6) bottom and the right single adsorption cabin body (6) top between the fixed groove (9) and the disc-shaped flow guide groove (10), and the adsorption cabin body (6) is further provided with a connecting mechanism for abutting the two adsorption cabin bodies (6) to each other.

2. The lithium-containing salt lake brine lithium extraction combined device according to claim 1, characterized in that: The connecting mechanism comprises a limiting sleeve (12), the limiting sleeve (12) is connected to the one end edge of the two symmetrically arranged adsorption cabin bodies (6), limiting cover plates (13) are mounted on the front end faces of the two symmetrically arranged adsorption cabin bodies (6), sealing gaskets (14) are fused to the one end edges of the limiting cover plates (13), threaded grooves (15) are formed in the upper and lower end edges of the front end faces of the adsorption cabin bodies (6), and fastening bolts (16) are screwed into the threaded grooves (15) through one end extension of the limiting cover plates (13).

3. The lithium-containing salt lake brine lithium extraction combined device according to claim 2, characterized in that: One number of clamping members (17) are fixedly connected to the front end faces of the limiting cover plates (13) close to the four corners, two number of clamping members (18) are fixedly mounted on the front end faces of the adsorption tank (1) close to the four corners of the fixed cavities (4), and limiting bolts (19) are inserted into the one number of clamping members (17) and the two number of clamping members (18).

4. The lithium-containing salt lake brine lithium extraction combination device according to claim 1, characterized in that: Sealing grooves (5) are formed in the middle parts of the inner walls of the fixed cavities (4), sealing clamping strips (7) are fused to the outer parts of the side edges of the adsorption cabin bodies (6) close to the plurality of fixed holes (8), the side edges of the sealing clamping strips (7) extend into the sealing grooves (5), and the sealing grooves (5) and the sealing clamping strips (7) are clamped with each other.

5. The lithium-containing salt lake brine lithium extraction combination device according to claim 2, characterized in that: Grooves are formed in the openings of the front end faces of the fixed cavities (4), the limiting cover plates (13) are located in the grooves, the one end edges of the sealing gaskets (14) abut against the inner wall edges of the grooves, and the limiting cover plates (13) and the sealing gaskets (14) are embedded in the grooves.

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