CN220468094U - System for retrieve high-purity lithium in follow lithium sediment - Google Patents
System for retrieve high-purity lithium in follow lithium sediment Download PDFInfo
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- CN220468094U CN220468094U CN202321002023.7U CN202321002023U CN220468094U CN 220468094 U CN220468094 U CN 220468094U CN 202321002023 U CN202321002023 U CN 202321002023U CN 220468094 U CN220468094 U CN 220468094U
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 99
- 239000013049 sediment Substances 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 101
- 238000000926 separation method Methods 0.000 claims abstract description 81
- 239000002253 acid Substances 0.000 claims abstract description 78
- 238000006243 chemical reaction Methods 0.000 claims abstract description 70
- 239000011347 resin Substances 0.000 claims abstract description 55
- 229920005989 resin Polymers 0.000 claims abstract description 55
- 239000002893 slag Substances 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000706 filtrate Substances 0.000 claims abstract description 37
- 238000011084 recovery Methods 0.000 claims abstract description 29
- 238000005342 ion exchange Methods 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 238000004064 recycling Methods 0.000 claims abstract description 18
- 239000000243 solution Substances 0.000 claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 150000002500 ions Chemical class 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000003814 drug Substances 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000000108 ultra-filtration Methods 0.000 claims description 36
- 239000012528 membrane Substances 0.000 claims description 21
- 238000005303 weighing Methods 0.000 claims description 12
- 239000002699 waste material Substances 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 239000012510 hollow fiber Substances 0.000 claims description 4
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003456 ion exchange resin Substances 0.000 claims description 3
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims 2
- 238000001179 sorption measurement Methods 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The utility model relates to a system for recycling high-purity lithium from lithium slag, which comprises a reaction device, a primary solid-liquid separation device, a secondary solid-liquid separation device, an acid recycling device and an ion exchange device which are sequentially connected through pipelines; the reaction device is used for mixing lithium slag, water and acid to obtain a mixed solution A; the primary solid-liquid separation device is used for carrying out solid-liquid separation on the mixed liquid A to remove most of solid suspended matters so as to obtain primary filtrate; the secondary solid-liquid separation device is used for filtering and separating the primary filtrate, and further removing fine solids in the primary filtrate to obtain secondary filtrate; the acid recovery device is used for recovering acid in the secondary filtrate to obtain resin bed effluent B; the ion exchange device is used for removing impurity ions in the resin bed effluent B and recovering the high-purity lithium solution. The utility model has the advantages of low medicament consumption, reduced cost of lithium recycling, higher purity of the recycled lithium and easy realization of resource utilization of lithium.
Description
Technical Field
The utility model relates to the technical field of lithium recovery, in particular to a system for recovering high-purity lithium from lithium slag.
Background
The lithium ore resources in China are rich, the history of extracting lithium resources from the ore is long, the technology is also mature, and the main production processes comprise a lime sintering method and a sulfuric acid method. The sulfuric acid process is the most widely used and applied lithium extraction process at present, and is divided into a sulfuric acid roasting impregnation process and a sulfuric acid leaching process. The existing treatment method is to extract the residual lithium in the lithium slag by alkali neutralization and chemical precipitation after acid dissolution or incineration, thereby realizing the utilization of lithium slag resources and the residue after lithium extraction can be used as an admixture for concrete in the building material industry. The consumption of the medicament in the existing lithium slag lithium extraction process is large, the energy consumption is high, the production cost is high, and the process flow is long.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a system for recovering high-purity lithium from lithium slag.
The aim of the utility model can be achieved by the following technical scheme:
a system for recycling high-purity lithium from lithium slag comprises a reaction device, a primary solid-liquid separation device, a secondary solid-liquid separation device, an acid recycling device and an ion exchange device which are sequentially connected through pipelines;
the reaction device is used for mixing lithium slag, water and acid to obtain a mixed solution A;
the primary solid-liquid separation device is used for carrying out solid-liquid separation on the mixed liquid A to remove most of solid suspended matters so as to obtain primary filtrate;
the secondary solid-liquid separation device is used for filtering and separating the primary filtrate, and further removing fine solids in the primary filtrate to obtain secondary filtrate;
the acid recovery device is used for recovering acid in the secondary filtrate to obtain resin bed effluent B;
the ion exchange device is used for removing impurity ions in the resin bed effluent B and recovering the high-purity lithium solution.
In one embodiment of the utility model, the reaction device comprises a reaction box and a stirrer, the reaction box is connected with the primary solid-liquid separation device, the stirrer is arranged in the reaction box, a feeding component, a dosing component and a water adding pipeline are arranged on the reaction box, the reaction box is used for mixing lithium slag, water and acid, and the stirrer is used for uniformly mixing the lithium slag, the water and the acid to obtain a mixed solution A.
In one embodiment of the utility model, the dosing assembly comprises a dosing pipe section, an automatic dosing pump and a cyclone nozzle, wherein the dosing end of the dosing pipe section is connected with the automatic dosing pump, the cyclone nozzle is arranged at the dosing end of the dosing pipe section, the dosing end of the dosing pipe section and the cyclone nozzle extend into the bottom of the reaction tank, the automatic dosing pump quantitatively adds acid into the reaction tank through the dosing pipe section, and the acid is mixed and reacted with liquid in the reaction tank through the cyclone nozzle.
In one embodiment of the utility model, the feeding assembly comprises a bin, a screw conveyor, a weighing machine and a motor, wherein a conveying belt is arranged in the screw conveyor and connected with the motor, one end of the conveying belt is arranged below the bin, the other end of the conveying belt is arranged above the weighing machine, the weighing machine is arranged above the reaction box, and the conveying belt is used for quantitatively adding lithium slag in the bin into the reaction box through the weighing machine.
In one embodiment of the utility model, the water adding pipeline is used for quantitatively adding water into the reaction box according to the weight of the lithium slag.
In one embodiment of the utility model, the primary solid-liquid separation device is a plate frame filtering device or a cyclone separator, the reaction box is connected with a feed inlet of the primary solid-liquid separation device through a pipeline, and a discharge outlet of the primary solid-liquid separation device is connected with the secondary solid-liquid separation device through a pipeline.
In one embodiment of the utility model, a conveying pump is arranged on a pipeline connected with the reaction device and the primary solid-liquid separation device, and the conveying pump is used for conveying the mixed liquid A in the reaction box to the primary solid-liquid separation device.
In one embodiment of the utility model, the secondary solid-liquid separation device is an ultrafiltration device, a feed inlet of the ultrafiltration device is connected with a discharge outlet of the primary solid-liquid separation device through a pipeline, the discharge outlet of the ultrafiltration device is connected with the acid recovery device through a pipeline, the ultrafiltration device is used for filtering primary filtrate transmitted by the primary solid-liquid separation device to obtain secondary filtrate,
the ultrafiltration device is internally provided with an ultrafiltration membrane, the type of the ultrafiltration membrane is a tubular ultrafiltration membrane, a plate type ultrafiltration membrane or a hollow fiber ultrafiltration membrane, and the filtration precision of the ultrafiltration membrane is 0.01-0.1 mu m.
In one embodiment of the utility model, the acid recovery device comprises a pure water tank, a resin bed and a waste liquid tank, wherein the resin bed is connected with a discharge hole of the secondary solid-liquid separation device, the ion exchange device and the automatic dosing pump through pipelines, the resin bed is provided with the pure water tank and the waste liquid tank which are connected through the pipelines,
the resin bed is used for adsorbing acid in the secondary filtrate to obtain resin bed effluent B, the pure water tank is used for providing water after the resin bed is adsorbed and saturated, acid with higher purity can be recovered through countercurrent regeneration of water, and the recovered acid can be recycled to the reaction tank, so that the recycling utilization is realized.
In one embodiment of the present utility model, the resin bed is packed with resin having a diameter of one fourth of that of conventional resin and smaller resin particles, so that the resin bed has advantages of large surface area, small volume of resin and small equipment.
In one embodiment of the utility model, the feed inlet of the ion exchange device is connected with the resin bed through a pipeline, ion exchange resin is arranged in the ion exchange device, and the proper resin is selected to adsorb the impurity ions in the resin bed effluent B according to the types of the impurity ions in the resin bed effluent B, so that the lithium solution with higher purity is obtained.
Compared with the prior art, the utility model has the following beneficial effects:
1. the reaction device, the primary solid-liquid separation device, the secondary solid-liquid separation device, the acid recovery device and the ion exchange device related by the system have simple structures and are easy to realize industrialized operation;
2. the reaction device has the advantages that the consumption of the medicament is low, the cost of lithium recycling is reduced, and the acid recycling device enables acid to be recycled, so that the cost is reduced;
3. the resin particles of the resin bed in the acid recovery device are smaller, so that the resin bed has the advantages of large surface area, small resin volume and small equipment;
4. the purity of the lithium recovered by the ion exchange device is high, and the recycling of the lithium is easy to realize.
Drawings
Fig. 1 is a schematic diagram of a system for recovering high purity lithium from lithium slag according to the present utility model.
Description of the drawings: 1. the device comprises a reaction device, a primary solid-liquid separation device, a secondary solid-liquid separation device, an acid recovery device, an ion exchange device, a lithium slag, 7, water, 8 and acid.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples.
The reaction device 1, the primary solid-liquid separation device 2, the secondary solid-liquid separation device 3, the acid recovery device 4 and the ion exchange device 5 are all in the prior art.
Example 1
Referring to fig. 1, the present embodiment provides a system for recovering high purity lithium from lithium slag, comprising a reaction device 1, a primary solid-liquid separation device 2, a secondary solid-liquid separation device 3, an acid recovery device 4 and an ion exchange device 5, which are sequentially connected through a pipeline;
the reaction device 1 is used for mixing lithium slag 6, water 7 and acid 8 to obtain a mixed solution A;
the primary solid-liquid separation device 2 is used for carrying out solid-liquid separation on the mixed liquid A to remove most of solid suspended matters so as to obtain primary filtrate;
the secondary solid-liquid separation device 3 is used for filtering and separating the primary filtrate, and further removing fine solids in the primary filtrate to obtain secondary filtrate;
the acid recovery device 4 is used for recovering acid 8 in the secondary filtrate to obtain resin bed effluent B;
the ion exchange device 5 is used for removing impurity ions in the resin bed effluent B and recovering a high-purity lithium solution.
In this embodiment, the reaction device 1 includes a reaction box and a stirrer, the reaction box is connected with the first-stage solid-liquid separation device 2, the stirrer is arranged in the reaction box, a feeding component, a dosing component and a water adding pipeline are arranged on the reaction box, the reaction box is used for mixing the lithium slag 6, the water 7 and the acid 8, and the stirrer is used for uniformly mixing the lithium slag 6, the water 7 and the acid 8 to obtain a mixed solution A.
In this embodiment, the dosing assembly includes dosing pipe section, automatic dosing pump and whirl nozzle, dosing pipe section's income medicine end links to each other with automatic dosing pump, dosing pipe section's play medicine end is equipped with the whirl nozzle, dosing pipe section's play medicine end stretches into the reaction tank bottom together with the whirl nozzle, automatic dosing pump is through dosing pipe section with acid 8 ration adding to the reaction tank in, acid 8 through the liquid mixing reaction in whirl nozzle and the reaction tank.
In this embodiment, throw material subassembly includes feed bin, screw conveyer, weighing machine and motor, be equipped with the conveyer belt in the screw conveyer, the conveyer belt links to each other with the motor, feed bin below is located to conveyer belt one end, weighing machine top is located to the conveyer belt other end, the reaction box top is located to the weighing machine, the motor is used for providing power for the conveyer belt, the conveyer belt is used for adding lithium slag 6 in the feed bin into the reaction box through the weighing machine ration.
In this embodiment, the water adding pipeline quantitatively adds water 7 into the reaction box according to the weight of the lithium slag 6.
In this embodiment, the primary solid-liquid separation device 2 is a plate-frame filtering device or a cyclone separator, the reaction box is connected with the feed inlet of the primary solid-liquid separation device 2 through a pipeline, and the discharge outlet of the primary solid-liquid separation device 2 is connected with the secondary solid-liquid separation device 3 through a pipeline.
In this embodiment, a pipeline connecting the reaction device 1 and the primary solid-liquid separation device 2 is provided with a transfer pump, and the transfer pump is used for transferring the mixed liquid A in the reaction tank to the primary solid-liquid separation device 2.
In this embodiment, the secondary solid-liquid separation device 3 is an ultrafiltration device, a feed inlet of the ultrafiltration device is connected with a discharge outlet of the primary solid-liquid separation device 2 through a pipeline, the discharge outlet of the ultrafiltration device is connected with the acid recovery device 4 through a pipeline, the ultrafiltration device is used for filtering the primary filtrate transmitted by the primary solid-liquid separation device 2 to obtain a secondary filtrate,
the ultrafiltration device is internally provided with an ultrafiltration membrane, the type of the ultrafiltration membrane is a tubular ultrafiltration membrane, a plate type ultrafiltration membrane or a hollow fiber ultrafiltration membrane, and the filtration precision of the ultrafiltration membrane is 0.01-0.1 mu m.
In the embodiment, the acid recovery device 4 comprises a pure water tank, a resin bed and a waste liquid tank, wherein the resin bed is connected with a discharge hole of the secondary solid-liquid separation device 3, the ion exchange device 5 and an automatic dosing pump through pipelines, the resin bed is provided with the pure water tank and the waste liquid tank which are connected through the pipelines,
the resin bed is used for adsorbing the acid 8 in the secondary filtrate to obtain resin bed effluent B, the pure water tank is used for providing water 7 after the resin bed is adsorbed and saturated, the acid 8 with higher purity can be recovered through countercurrent regeneration of the water 7, and the recovered acid 8 can be recycled to the reaction tank, so that the recycling utilization is realized.
In this embodiment, the resin bed is filled with resin having a diameter of one fourth of that of the conventional resin and resin particles are small, so that the resin bed has advantages of large surface area, small volume of resin and small equipment.
In this embodiment, the feed inlet of the ion exchange device 5 is connected to the resin bed through a pipeline, and an ion exchange resin is disposed in the ion exchange device 5, and according to the type of impurity ions in the effluent B of the resin bed, an appropriate resin is selected to adsorb the impurity ions in the effluent B of the resin bed, so as to obtain a lithium solution with higher purity.
In addition, the utility model also provides a using method of the system for recycling high-purity lithium from lithium slag, which comprises the following specific steps:
lithium slag 6, water 7 and acid 8 are uniformly mixed in the reaction device 1 according to a certain proportion, lithium in the lithium slag 6 is leached in an acid solution, mixed liquor A enters a first-stage solid-liquid separation device 2 for solid-liquid separation, first-stage filtrate enters a second-stage solid-liquid separation device 3 for further filtration separation, second-stage filtrate enters an acid recovery device 4 for recovering acid in liquid, resin bed effluent B enters an ion exchange device 5 for removing impurity ions in the liquid, and high-purity lithium solution is recovered.
Example 2
A system for recovering high-purity lithium from lithium slag comprises a reaction device 1, a primary solid-liquid separation device 2, a secondary solid-liquid separation device 3, an acid recovery device 4 and an ion exchange device 5. Lithium slag 6, water 7 and acid 8 are reversely added into a reaction box according to a certain proportion and are uniformly mixed, lithium in the lithium slag 6 is leached in an acid solution, mixed liquor A enters a first-stage solid-liquid separation device 2 (cyclone separator) for solid-liquid separation, first-stage filtrate enters a second-stage solid-liquid separation device 3 (plate-type ultrafiltration membrane is adopted) for further filtration and separation, the second-stage filtrate enters an acid recovery device 4 for recovering the acid 8 in the liquid, resin bed effluent B after acid recovery enters an ion exchange device 5 for removing impurity ions in the liquid, such as calcium, magnesium and the like, a high-purity lithium solution is recovered, the acid recovery device 4 is saturated and then is resolved by using the water 7, and clean acid 8 is obtained and recycled to the reaction device 1.
Example 3
A system for recovering high-purity lithium from lithium slag comprises a reaction device 1, a primary solid-liquid separation device 2, a secondary solid-liquid separation device 3, an acid recovery device 4 and an ion exchange device 5. Lithium slag 6, water 7 and acid 8 are reversely added into a reaction box according to a certain proportion and are uniformly mixed, lithium in the lithium slag 6 is leached out in an acid solution, mixed liquor A enters a first-stage solid-liquid separation device 2 (plate frame filtering equipment) for solid-liquid separation, first-stage filtrate enters a second-stage solid-liquid separation device 3 (a tubular ultrafiltration membrane is adopted) for further filtering separation, the second-stage filtrate enters an acid recovery device 4 for recovering acid 8 in liquid, resin bed effluent B after acid recovery enters an ion exchange device 5 for removing impurity ions in the liquid, such as calcium, magnesium, aluminum, manganese and the like, high-purity lithium solution is recovered, and the acid recovery device 4 is used for resolving after saturation to obtain clean acid 8 for recycling to the reaction device 1.
Example 4
A system for recovering high-purity lithium from lithium slag comprises a reaction device 1, a primary solid-liquid separation device 2, a secondary solid-liquid separation device 3, an acid recovery device 4 and an ion exchange device 5. The lithium slag 6, the water 7 and the acid 8 are reversely added into a reaction box according to a certain proportion and are uniformly mixed, lithium in the lithium slag 6 is leached in an acid solution, the mixed solution A enters a first-stage solid-liquid separation device 2 (cyclone separator) for solid-liquid separation, the first-stage filtrate enters a second-stage solid-liquid separation device 3 (hollow fiber ultrafiltration membrane is adopted) for further filtration and separation, the second-stage filtrate enters an acid recovery device 4 for recovering the acid 8 in the liquid, the effluent B of a resin bed after acid recovery enters an ion exchange device 5 for removing impurity ions in the liquid, such as calcium, magnesium and the like, and the lithium solution with high purity is recovered; the acid recovery device 4 is saturated and then resolved by water 7, so that clean acid 8 is obtained and recycled to the reaction device 1.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. The system for recycling high-purity lithium from lithium slag is characterized by comprising a reaction device (1), a primary solid-liquid separation device (2), a secondary solid-liquid separation device (3), an acid recycling device (4) and an ion exchange device (5) which are sequentially connected through pipelines;
the reaction device (1) is used for mixing lithium slag (6), water (7) and acid (8) to obtain a mixed solution A;
the primary solid-liquid separation device (2) is used for carrying out solid-liquid separation on the mixed liquid A to remove most of solid suspended matters so as to obtain primary filtrate;
the secondary solid-liquid separation device (3) is used for filtering and separating the primary filtrate, and further removing fine solids in the primary filtrate to obtain secondary filtrate;
the acid recovery device (4) is used for recovering acid (8) in the secondary filtrate to obtain resin bed effluent B;
the ion exchange device (5) is used for removing impurity ions in the effluent B of the resin bed and recovering the lithium solution with high purity.
2. The system for recycling high-purity lithium from lithium slag according to claim 1, wherein the reaction device (1) comprises a reaction box and a stirrer, the reaction box is connected with the primary solid-liquid separation device (2), the stirrer is arranged in the reaction box, a feeding component, a dosing component and a water adding pipeline are arranged on the reaction box, the reaction box is used for mixing the lithium slag (6), the water (7) and the acid (8), and the stirrer is used for uniformly mixing the lithium slag (6), the water (7) and the acid (8) to obtain a mixed solution A.
3. The system for recycling high-purity lithium from lithium slag according to claim 2, wherein the dosing assembly comprises a dosing pipe section, an automatic dosing pump and a cyclone nozzle, the dosing end of the dosing pipe section is connected with the automatic dosing pump, the drug outlet end of the dosing pipe section is provided with the cyclone nozzle, the drug outlet end of the dosing pipe section and the cyclone nozzle extend into the bottom of the reaction tank, the automatic dosing pump quantitatively adds acid (8) into the reaction tank through the dosing pipe section, and the acid (8) is mixed and reacted with liquid in the reaction tank through the cyclone nozzle.
4. The system for recycling high-purity lithium from lithium slag according to claim 2, wherein the feeding assembly comprises a bin, a screw conveyor, a weighing machine and a motor, a conveying belt is arranged in the screw conveyor, the conveying belt is connected with the motor, one end of the conveying belt is arranged below the bin, the other end of the conveying belt is arranged above the weighing machine, the weighing machine is arranged above the reaction box, the motor is used for providing power for the conveying belt, and the conveying belt is used for quantitatively adding the lithium slag (6) in the bin into the reaction box through the weighing machine.
5. A system for recovering high purity lithium from lithium slag as defined in claim 2 wherein the water feed line quantitatively feeds water (7) into the reaction tank based on the weight of the lithium slag (6).
6. The system for recycling high-purity lithium from lithium slag according to claim 2, wherein the primary solid-liquid separation device (2) is a plate frame filtering device or a cyclone separator, the reaction box is connected with a feed inlet of the primary solid-liquid separation device (2) through a pipeline, and a discharge outlet of the primary solid-liquid separation device (2) is connected with the secondary solid-liquid separation device (3) through a pipeline.
7. The system for recovering high-purity lithium from lithium slag according to claim 6, wherein a transfer pump is arranged on a pipeline connecting the reaction device (1) and the primary solid-liquid separation device (2), and the transfer pump is used for transferring the mixed liquid A in the reaction tank to the primary solid-liquid separation device (2).
8. The system for recovering high-purity lithium from lithium slag according to claim 6, wherein the secondary solid-liquid separation device (3) is an ultrafiltration device, a feed inlet of the ultrafiltration device is connected with a discharge outlet of the primary solid-liquid separation device (2) through a pipeline, the discharge outlet of the ultrafiltration device is connected with the acid recovery device (4) through a pipeline, the ultrafiltration device is used for filtering primary filtrate transmitted by the primary solid-liquid separation device (2) to obtain secondary filtrate,
the ultrafiltration device is internally provided with an ultrafiltration membrane, the type of the ultrafiltration membrane is a tubular ultrafiltration membrane, a plate type ultrafiltration membrane or a hollow fiber ultrafiltration membrane, and the filtration precision of the ultrafiltration membrane is 0.01-0.1 mu m.
9. The system for recovering high-purity lithium from lithium slag according to claim 8, wherein the acid recovery device (4) comprises a pure water tank, a resin bed and a waste liquid tank, the resin bed is simultaneously connected with a discharge hole of the secondary solid-liquid separation device (3), the ion exchange device (5) and the automatic dosing pump through pipelines, the resin bed is provided with the pure water tank and the waste liquid tank which are connected through the pipelines,
the resin bed is used for adsorbing acid (8) in the secondary filtrate to obtain resin bed effluent B, and the pure water tank is used for providing water (7) after the resin bed is saturated in adsorption to obtain purified acid (8).
10. The system for recovering high-purity lithium from lithium slag according to claim 9, wherein the inlet of the ion exchange device (5) is connected with the resin bed through a pipeline, and the ion exchange device (5) is internally provided with ion exchange resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321002023.7U CN220468094U (en) | 2023-04-28 | 2023-04-28 | System for retrieve high-purity lithium in follow lithium sediment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321002023.7U CN220468094U (en) | 2023-04-28 | 2023-04-28 | System for retrieve high-purity lithium in follow lithium sediment |
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|---|---|
| CN220468094U true CN220468094U (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321002023.7U Active CN220468094U (en) | 2023-04-28 | 2023-04-28 | System for retrieve high-purity lithium in follow lithium sediment |
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| Country | Link |
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| CN (1) | CN220468094U (en) |
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- 2023-04-28 CN CN202321002023.7U patent/CN220468094U/en active Active
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