CN221309612U - Lithium battery positive electrode powder lithium extraction acid leaching tank - Google Patents
Lithium battery positive electrode powder lithium extraction acid leaching tank Download PDFInfo
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- CN221309612U CN221309612U CN202322496262.9U CN202322496262U CN221309612U CN 221309612 U CN221309612 U CN 221309612U CN 202322496262 U CN202322496262 U CN 202322496262U CN 221309612 U CN221309612 U CN 221309612U
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- China
- Prior art keywords
- acid leaching
- leaching tank
- lithium
- hydrogen peroxide
- tank
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- 239000002253 acid Substances 0.000 title claims abstract description 47
- 238000002386 leaching Methods 0.000 title claims abstract description 47
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 41
- 239000000843 powder Substances 0.000 title claims abstract description 36
- 238000000605 extraction Methods 0.000 title claims abstract description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 75
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 44
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims abstract description 29
- 239000002699 waste material Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 36
- 239000000203 mixture Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000002156 mixing Methods 0.000 description 7
- 239000011259 mixed solution Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910003002 lithium salt Inorganic materials 0.000 description 4
- 159000000002 lithium salts Chemical class 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The application relates to a lithium battery anode powder extraction lithium acid leaching tank, which comprises: the delivery pipe is internally provided with a flowing space for the mixed liquid of waste lithium iron phosphate powder, water distribution, sulfuric acid and hydrogen peroxide to pass through; an atomizing nozzle in communication with the delivery tube; a pipe mixer, the pipe mixer comprising: a housing; the inner container is wrapped by the outer shell, a heating space for heating the inner container is arranged between the outer shell and the inner container, one end of the delivery pipe extends into the inner container, and the atomizing nozzle is positioned in the inner container.
Description
Technical Field
The application relates to the technical field of lithium iron phosphate recovery, in particular to a lithium battery anode powder extraction lithium acid leaching tank.
Background
The lithium iron phosphate is the most used lithium battery anode material at present, so that the recovery of the waste lithium iron phosphate is of great significance, and the lithium in the waste lithium iron phosphate can be recovered first, and then the recovered lithium is used as a raw material to prepare the lithium iron phosphate.
In the prior art, lithium iron phosphate is treated by an acid leaching process to recover lithium, namely, sulfuric acid and hydrogen peroxide are utilized to leach and recover lithium from waste lithium iron phosphate powder, the actual operation process is that firstly, the waste lithium iron phosphate powder and quantitative water are stirred in an acid leaching tank to prepare slurry, then quantitative sulfuric acid is added and hydrogen peroxide is slowly dripped to prepare mixed liquid, the mixed liquid is heated, the oxidation effect of the hydrogen peroxide is improved, then soluble lithium salt and ferric phosphate are generated in the mixed liquid, the lithium salt is extracted by solid-liquid separation, the hydrogen peroxide is dripped to generate oxidation reaction to generate lithium salt in the prior art, the hydrogen peroxide and the mixed liquid are not uniformly mixed, the demand of the hydrogen peroxide is greatly increased, the reaction time is prolonged under the same yield, and then the cost of recovering lithium iron phosphate and the recovery period time are increased.
Aiming at the problems, the application provides a lithium battery anode powder extraction lithium acid leaching tank.
Disclosure of Invention
The embodiment of the application provides a lithium battery anode powder extraction lithium acid leaching tank, which aims to solve the problems of low hydrogen peroxide utilization rate and slow reaction in the traditional lithium recovery technology in the related technology.
In a first aspect, a lithium battery positive electrode powder extraction lithium acid leaching tank is provided, which comprises:
The delivery pipe is internally provided with a flowing space for the mixed liquid of waste lithium iron phosphate powder, water distribution, sulfuric acid and hydrogen peroxide to pass through;
an atomizing nozzle in communication with the delivery tube;
a pipe mixer, the pipe mixer comprising:
-a housing;
-a liner surrounded by the outer shell, a heating space for heating the liner being present between the outer shell and the liner, the delivery tube having one end extending into the liner and the atomizing nozzle being located in the liner.
In some embodiments, the pipe mixer further comprises two steam pipes;
The two steam pipes are respectively communicated with the heating space and are respectively used for inputting steam and outputting steam.
In some embodiments, the method further comprises an acid leaching tank and a hydrogen peroxide tank;
the acid leaching tank is respectively connected with a waste lithium iron phosphate inlet, a water inlet and a sulfuric acid inlet, a stirring device is arranged in the acid leaching tank, the bottom of the acid leaching tank is connected with a three-way pipeline, and the acid leaching tank is connected with one end of the three-way pipeline;
the hydrogen peroxide tank is communicated with one end of the three-way pipeline.
In some embodiments, a high-pressure delivery pump is connected to the last end of the three-way pipe, and the other end of the delivery pipe is connected to the high-pressure delivery pump.
In some embodiments, the stirring device comprises a stirring rod and a stirring blade;
The stirring blade is connected with the stirring rod, a stirring space for containing waste lithium iron phosphate powder, water distribution and sulfuric acid mixture exists in the acid leaching tank, and the stirring blade is positioned in the stirring space.
In some embodiments, a first valve is also included;
the first valve is arranged at the joint of the three-way pipeline and the acid leaching tank so as to control the flow of the mixture.
In some embodiments, a second valve is also included;
The second valve is arranged at the joint of the three-way pipeline and the hydrogen peroxide tank so as to control the flow of hydrogen peroxide.
The embodiment of the application provides a lithium battery anode powder extraction lithium acid leaching tank, which is characterized in that mixed liquid is atomized through an atomizing nozzle, and then the inner container is heated through a heating space, so that the atomized mixed liquid in the inner container is reacted, the particle size of the mixed liquid is changed to a micron level, the reaction is more efficient and rapid, the utilization rate of hydrogen peroxide is improved, and the consumption of hydrogen peroxide is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a pipeline mixer according to an embodiment of the present application.
In the figure: 1. a delivery tube; 2. an atomizing nozzle; 3. a pipe mixer; 31. a housing; 32. an inner container; 33. a steam pipe; 4. an acid leaching tank; 5. a hydrogen peroxide tank; 6. an inlet for waste lithium iron phosphate powder; 7. a water inlet; 8. a sulfuric acid inlet; 9. a stirring device; 91. a stirring rod; 92. stirring the leaves; 10. a three-way pipe; 11. a high pressure delivery pump; 12. a first valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The embodiment of the application provides a lithium battery anode powder extraction lithium acid leaching tank, which can solve the problems of low hydrogen peroxide utilization rate and slow reaction in the traditional lithium recovery technology in the related technology.
Referring to fig. 1 to 2, a lithium battery positive electrode powder extraction lithium acid leaching tank includes:
The delivery tube 1, atomizing nozzle 2 and pipeline blender 3, there is the flow space that supplies old and useless lithium iron phosphate powder, water distribution, sulfuric acid and hydrogen peroxide solution mixed solution to pass through in the delivery tube 1, atomizing nozzle 2 with delivery tube 1 intercommunication, pipeline blender 3 includes:
The device comprises a shell 31 and an inner container 32, wherein the inner container 32 is wrapped by the shell 31, a heating space for heating the inner container 32 is arranged between the shell 31 and the inner container 32, one end of the delivery pipe 1 extends into the inner container 32, and the atomizing nozzle 2 is positioned in the inner container 32;
In the implementation process, the mixed solution of waste lithium iron phosphate powder, water distribution, sulfuric acid and hydrogen peroxide is discharged from the delivery pipe 1 to the atomizing nozzle 2, atomized in the inner container 32 through the atomizing nozzle 2, and heated in the heating space to heat the inner container 32, so that the atomized mixed solution in the inner container 32 undergoes a second mixing reaction, and after the reaction is completed, substances in the inner container 32 are subjected to fixed liquid separation to obtain lithium salt.
It should be noted that the atomized mixed solution has smaller particle size, is more convenient for reaction, and can improve the reaction speed and the utilization rate of hydrogen peroxide.
Further, in the present embodiment, the pipe mixer 3 further includes two steam pipes 33;
The two steam pipes 33 are respectively communicated with the heating space, and the two steam pipes 33 are respectively used for inputting steam and outputting steam;
The inner container 32 is heated by a steam heating method, which mainly comprises the steps of inputting high-temperature steam into a heating space through one steam pipe 33, discharging the steam from the other steam pipe 33, and heating by circulating the above-mentioned processes.
Further, in this embodiment, the acid leaching tank 4 and the hydrogen peroxide tank 5 are also included;
the acid leaching tank 4 is respectively connected with a waste lithium iron phosphate inlet 6, a water inlet 7 and a sulfuric acid inlet 8, a stirring device 9 is arranged in the acid leaching tank 4, the bottom of the acid leaching tank 4 is connected with a three-way pipeline 10, and the acid leaching tank 4 is connected with one end of the three-way pipeline 10;
the hydrogen peroxide tank 5 is communicated with one end of the three-way pipeline 10;
Waste lithium iron phosphate powder, water distribution and sulfuric acid are added into the acid leaching tank 4, the waste lithium iron phosphate powder, the water distribution and the sulfuric acid are uniformly mixed through the stirring device 9, the mixture flows into the three-way pipeline 10 after uniform mixing, and hydrogen peroxide flows into the three-way pipeline 10 from the hydrogen peroxide tank 5 and is mixed with the uniformly mixed waste lithium iron phosphate powder, the water distribution and the sulfuric acid to form a mixed solution.
Specifically, in this embodiment, a high-pressure delivery pump 11 is connected to the last end of the three-way pipe 10, and the other end of the delivery pipe 1 is connected to the high-pressure delivery pump 11;
The mixed liquid is discharged to the atomizing nozzle 2 through the delivery pipe 1 under the action of the high-pressure delivery pump 11, and the mixed liquid undergoes a first mixing reaction through the high-pressure delivery pump 11.
More specifically, in the present embodiment, the stirring device 9 includes a stirring rod 91 and a stirring blade 92;
The stirring blade 92 is connected with the stirring rod 91, a stirring space for containing waste lithium iron phosphate powder, water distribution and sulfuric acid mixture exists in the acid leaching tank 4, and the stirring blade 92 is positioned in the stirring space;
The motor is connected to the outside of the stirring rod 91, and the stirring rod 91 drives the stirring blade 92 to rotate so as to stir the mixture in the acid leaching tank 4 uniformly.
Preferably, in this embodiment, the first valve 12 is further included;
The first valve 12 is arranged at the joint of the three-way pipeline 10 and the acid leaching tank 4 so as to control the flow of the mixture flowing out;
Also comprises a second valve 13;
The second valve 13 is installed at the connection part of the three-way pipeline 10 and the hydrogen peroxide tank 5 so as to control the flow of hydrogen peroxide;
Continuously feeding waste lithium iron phosphate powder, water distribution and sulfuric acid into the acid leaching tank 4, controlling the feeding amount ratio of the waste lithium iron phosphate powder, the water distribution and the sulfuric acid, and mixing to obtain a mixture;
Controlling the flow of the mixture and the hydrogen peroxide and continuously discharging the mixture and the hydrogen peroxide;
After the waste lithium iron phosphate powder, the water distribution, the sulfuric acid and the hydrogen peroxide are continuously discharged, the operation of discharging balance and continuous acid leaching is realized through the first valve 12 and the second valve 13.
The working principle of the application is as follows:
In the implementation process, waste lithium iron phosphate powder, water distribution and sulfuric acid are continuously fed into the acid leaching tank 4, the proportion of the feeding amount of the waste lithium iron phosphate powder, the water distribution and the sulfuric acid is controlled, stirring blades 92 are rotated in the acid leaching tank 4 to be mixed into a mixture, the flow of the mixture and hydrogen peroxide is controlled, the mixture and the hydrogen peroxide are continuously discharged, the discharging balance is realized through a first valve 12 and a second valve 13, and the mixture and the hydrogen peroxide are mixed into a mixed solution;
The mixed liquid is discharged from the delivery pipe 1 to the atomizing nozzle 2 through the high-pressure conveying mixed liquid pump, the first mixing reaction occurs in the process, the mixed liquid is atomized in the inner container 32 through the atomizing nozzle 2, the inner container 32 is heated through the heating space, the atomized mixed liquid in the inner container 32 is subjected to the second mixing reaction, and the utilization rate of hydrogen peroxide is greatly improved through the two mixing reactions.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. Lithium battery positive electrode powder draws lithium acid leaching tank (4), its characterized in that includes:
The device comprises an eduction tube (1), wherein a flowing space for the mixed liquid of waste lithium iron phosphate powder, water distribution, sulfuric acid and hydrogen peroxide to pass through is arranged in the eduction tube (1);
An atomizing nozzle (2), the atomizing nozzle (2) being in communication with the delivery tube (1);
-a pipe mixer (3), the pipe mixer (3) comprising:
-a housing (31);
-a liner (32), the liner (32) being surrounded by the outer shell (31), a heating space for heating the liner (32) being present between the outer shell (31) and the liner (32), the delivery tube (1) having one end extending into the liner (32) and the atomizing nozzle (2) being located in the liner (32).
2. The lithium battery positive electrode powder extraction lithium acid leaching tank (4) according to claim 1, wherein:
The pipe mixer (3) further comprises two steam pipes (33);
The two steam pipes (33) are respectively communicated with the heating space, and the two steam pipes (33) are respectively used for inputting steam and outputting steam.
3. The lithium battery positive electrode powder extraction lithium acid leaching tank (4) according to claim 1, wherein:
the device also comprises an acid leaching tank (4) and a hydrogen peroxide tank (5);
The acid leaching tank (4) is respectively connected with a waste lithium iron phosphate inlet (6), a water inlet (7) and a sulfuric acid inlet (8), a stirring device (9) is arranged in the acid leaching tank (4), the bottom of the acid leaching tank (4) is connected with a three-way pipeline (10), and the acid leaching tank (4) is connected with one end of the three-way pipeline (10);
the hydrogen peroxide tank (5) is communicated with one end of the three-way pipeline (10).
4. A lithium battery positive electrode powder extraction lithium acid leaching tank (4) according to claim 3, characterized in that:
The last end of the three-way pipeline (10) is connected with a high-pressure delivery pump (11), and the other end of the delivery pipe (1) is connected with the high-pressure delivery pump (11).
5. A lithium battery positive electrode powder extraction lithium acid leaching tank (4) according to claim 3, characterized in that:
the stirring device (9) comprises a stirring rod (91) and stirring blades (92);
The stirring blade (92) is connected with the stirring rod (91), a stirring space for containing waste lithium iron phosphate powder, water distribution and sulfuric acid mixture exists in the acid leaching tank (4), and the stirring blade (92) is located in the stirring space.
6. A lithium battery positive electrode powder extraction lithium acid leaching tank (4) according to claim 3, characterized in that:
Also comprises a first valve (12);
The first valve (12) is arranged at the joint of the three-way pipeline (10) and the acid leaching tank (4) so as to control the flow of the mixture.
7. A lithium battery positive electrode powder extraction lithium acid leaching tank (4) according to claim 3, characterized in that:
The valve also comprises a second valve;
The second valve is arranged at the joint of the three-way pipeline (10) and the hydrogen peroxide tank (5) so as to control the flow of hydrogen peroxide.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221309612U true CN221309612U (en) | 2024-07-12 |
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| GR01 | Patent grant |