CN119525000A - Aeration separation device for graphite regeneration and separation process thereof - Google Patents
Aeration separation device for graphite regeneration and separation process thereof Download PDFInfo
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- CN119525000A CN119525000A CN202411694067.XA CN202411694067A CN119525000A CN 119525000 A CN119525000 A CN 119525000A CN 202411694067 A CN202411694067 A CN 202411694067A CN 119525000 A CN119525000 A CN 119525000A
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- aeration
- graphite
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- copper
- stirring
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- 238000005273 aeration Methods 0.000 title claims abstract description 160
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 83
- 239000010439 graphite Substances 0.000 title claims abstract description 83
- 238000000926 separation method Methods 0.000 title claims abstract description 55
- 230000008929 regeneration Effects 0.000 title claims abstract description 21
- 238000011069 regeneration method Methods 0.000 title claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 107
- 229910052802 copper Inorganic materials 0.000 claims abstract description 103
- 239000010949 copper Substances 0.000 claims abstract description 103
- 238000003756 stirring Methods 0.000 claims abstract description 67
- 238000004062 sedimentation Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 238000000605 extraction Methods 0.000 claims abstract description 24
- 238000001556 precipitation Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 10
- 238000007667 floating Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 29
- 238000007599 discharging Methods 0.000 claims description 27
- 208000034699 Vitreous floaters Diseases 0.000 claims description 21
- 238000004891 communication Methods 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 15
- 238000011084 recovery Methods 0.000 description 18
- 239000007787 solid Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 239000011889 copper foil Substances 0.000 description 4
- 230000005514 two-phase flow Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010926 waste battery Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
- B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
- B03B5/20—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs using pulses generated by air injection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
- B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
- B03B5/24—Constructional details of jigs, e.g. pulse control devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
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- Fuel Cell (AREA)
Abstract
本发明属于曝气分离技术领域，具体涉及石墨再生用曝气分离装置及其分离工艺，其中包括：曝气池，曝气池内设有一隔板将曝气池内分隔为曝气区和沉淀区，隔板的上端开设有连通孔，曝气池的上端设有进料管，曝气池的下端设置有进水管，进料管和进水管均与曝气区连通，曝气区内设有用于向曝气区内通气的曝气组件；搅拌组件的搅拌端伸入曝气区内，沉淀区的上端设置有第二抽取组件，沉淀区的下端设有第一抽取组件，本发明通过设置隔板将曝气池分成曝气区和沉淀区，再配合搅拌组件和曝气组件使含铜负极极片原料达到铜片与石墨粉末分离的效果，曝气结束后，沉淀后石墨漂浮物漂浮在液面上，而较重的铜片则沉入沉淀区的底部，分离效率高、减少操作复杂性。
The invention belongs to the technical field of aeration separation, and specifically relates to an aeration separation device for graphite regeneration and a separation process thereof, which comprises: an aeration tank, wherein a partition is arranged in the aeration tank to divide the aeration tank into an aeration zone and a sedimentation zone, a connecting hole is opened at the upper end of the partition, a feed pipe is arranged at the upper end of the aeration tank, a water inlet pipe is arranged at the lower end of the aeration tank, both the feed pipe and the water inlet pipe are connected with the aeration zone, an aeration component for ventilating the aeration zone is arranged in the aeration zone; a stirring end of the stirring component extends into the aeration zone, a second extraction component is arranged at the upper end of the sedimentation zone, and a first extraction component is arranged at the lower end of the sedimentation zone. The invention divides the aeration tank into the aeration zone and the sedimentation zone by arranging a partition, and then cooperates with the stirring component and the aeration component to achieve the effect of separating copper sheets from graphite powder in a copper-containing negative electrode sheet raw material. After aeration, the graphite floating objects after precipitation float on the liquid surface, while the heavier copper sheets sink to the bottom of the sedimentation zone, so that the separation efficiency is high and the operation complexity is reduced.
Description
Technical Field
The invention belongs to the technical field of aeration separation, and particularly relates to an aeration separation device for graphite regeneration and a separation process thereof.
Background
The waste batteries are a main source of copper-containing negative electrode pieces, and the batteries need to be recycled after the service life is finished so as to recycle valuable metal components, and recycling copper and graphite in the waste batteries can reduce the resource waste and the production cost of new materials. Meanwhile, the recovery of the battery is also beneficial to reducing the pollution of wastes to the environment, and is an important sustainable development measure.
The negative electrode sheet in the battery is usually composed of copper foil and graphite powder, which are required to be separated from the battery in order to recover the materials, and common separation methods include mechanical crushing, acid leaching and the like, so that the copper foil and the graphite powder can be effectively separated, and the separated copper foil and graphite powder are required to be further separated to obtain a high-purity final product.
The common separation method generally adopts a physical screening mode, a mixture of copper foil and graphite powder is put into screening equipment, a multi-stage screen is arranged, materials with different particle diameters are separated through vibration or rotation, and copper sheets and graphite powder are screened out step by step.
However, the screening method has low separation efficiency, complex operation of arranging the multi-stage screen and easy environmental pollution.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an aeration separation device for graphite regeneration and a separation process thereof, which have the effects of high separation efficiency and reduced operation complexity.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The aeration separation device for graphite regeneration comprises an aeration tank, wherein a baffle plate is arranged in the aeration tank to divide the interior of the aeration tank into an aeration area and a sedimentation area, a communication hole for communicating the aeration area and the sedimentation area is formed in the upper end of the baffle plate, a feed pipe is arranged at the upper end of the aeration tank, a water inlet pipe is arranged at the lower end of the aeration tank, the feed pipe and the water inlet pipe are both communicated with the aeration area, an aeration assembly is arranged in the aeration area, and the aeration assembly is used for ventilating the aeration area;
the device is characterized in that a stirring assembly is arranged on the aeration tank, the stirring end of the stirring assembly stretches into the aeration area, the upper end of the sedimentation area is provided with a second extraction assembly for extracting separated graphite floaters, and the lower end of the sedimentation area is provided with a first extraction assembly for extracting separated copper sheets.
The copper-containing negative electrode plate material separating device has the advantages that the aeration tank is divided into the aeration area and the sedimentation area by the partition plate, the stirring assembly and the aeration assembly are matched to enable the copper-containing negative electrode plate material to achieve the effect of separating copper sheets from graphite powder, after aeration is finished, liquid containing graphite floaters and the copper sheets enters the sedimentation area through the communication holes and is sedimentated in the sedimentation area, the graphite floaters float on the liquid surface after sedimentation, and the heavier copper sheets sink into the bottom of the sedimentation area, so that the copper sheets and the graphite powder can be fully separated.
Further, the aeration assembly comprises an air compressor, an air inlet pipe and a central guide cylinder, wherein the central guide cylinder is arranged in the aeration zone, the lower end of the central guide cylinder is connected with the air compressor through the air inlet pipe, and the air compressor is arranged outside the lower end of the aeration tank.
The copper-containing negative electrode plate raw material and pure water are mixed in an aeration zone, air is continuously injected into the aeration zone through an air compressor, and due to different movement characteristics of materials with different densities in gas-liquid two-phase flow, the materials with lighter densities can be brought to the liquid surface by the air flow, and the materials with heavier densities can be settled to the bottom of the tank.
Further, a plurality of vent holes are formed in the side wall of the central guide cylinder, and the vent holes are communicated with the aeration area in the central guide cylinder.
Further, the stirring assembly comprises a driving motor, a motor mounting seat, a bearing, a stirring shaft and a stirring impeller, wherein the driving motor is arranged on the motor mounting seat, the motor mounting seat is arranged at the upper end of the aeration tank and is positioned above the aeration zone, the upper end of the stirring shaft is connected with a motor shaft of the driving motor, the lower end of the stirring shaft extends into the aeration zone, and the stirring impeller is arranged at the lower end of the stirring shaft.
The stirring device has the advantages that the stirring impeller is driven by the driving motor to rotate to achieve the stirring effect, the contact and the mixing between solids in liquid and air flow can be enhanced by stirring, the uniformity of the air-liquid two-phase flow is improved, the improvement of the separation effect is facilitated, the flow characteristics of the liquid such as the flow speed and the like can be changed, the generation, the rising and the crushing processes of bubbles are affected, and the separation effect is adjusted.
Further, the first extraction component comprises a first material extraction pump and a first discharging pipe, one end of the first discharging pipe is connected with the first material extraction pump, and the other end of the first discharging pipe extends into the lower end of the precipitation zone and is used for extracting separated copper sheets.
The copper sheet separating device has the specific technical effects that the copper sheet which is separated and sunk into the bottom of the tank is extracted through the first material extracting pump and the first material discharging pipe, and the subsequent crushing treatment is carried out.
Further, the second extraction assembly comprises a graphite collecting tank, a second material extraction pump and a second discharging pipe, one end of the second discharging pipe is communicated with the graphite collecting tank, the other end of the second discharging pipe stretches into the upper end of the sedimentation zone and is used for extracting and extracting separated graphite floaters, and the second material extraction pump is installed on the second discharging pipe.
The method has the specific technical effects that graphite floaters floating on the liquid level are pumped into a graphite collecting tank through a second pumping pump and a second discharging pipe and are subjected to subsequent treatment.
Further, an inclined guide plate is formed in the sedimentation area, and the inclined guide plate is obliquely downwards arranged from the upper end to the lower end of the sedimentation area.
The copper sheet sinking device has the specific technical effects that the inclined guide plate is adopted to play a guiding role, so that the copper sheet better sinks into the bottom of the pool, and the subsequent extraction is convenient.
Further, the aeration tank further comprises a plurality of support bases, and the support bases are arranged at the lower end of the aeration tank.
Further, the copper-containing negative electrode plate material feeding device further comprises a hopper for feeding the copper-containing negative electrode plate material, and the lower end of the hopper is connected with the feeding pipe.
An aeration separation process for graphite regeneration, which adopts the aeration separation device for graphite regeneration to separate graphite from copper sheets, comprises the following steps:
S1, feeding a raw material of a copper-containing negative electrode plate into an aeration zone through a feed pipe;
Step S2, adding pure water into the aeration zone through a water inlet pipe, wherein the ratio of the raw materials of the copper-containing negative electrode piece and the pure water added in the step S1 is 1:2-1:4;
S3, starting an air compressor, enabling air to enter the central guide cylinder from the air inlet pipe, enabling the air to enter the aeration zone through a plurality of ventilation holes in the central guide cylinder, and setting the air flow to be 500-700L/min;
S4, starting a driving motor to drive a stirring shaft to rotate so as to drive a stirring impeller to rotate, wherein the stirring speed is set to 150-250 rpm;
Step S5, maintaining a normal temperature 25 ℃ state, and setting the aeration time to be two hours, namely, running the step S3 and the step S4 for 2-5 hours;
S6, enabling the liquid containing the graphite floaters and the copper sheets to enter a precipitation area through the communicating holes, precipitating in the precipitation area, enabling the graphite floaters to float on the liquid surface after precipitation, and enabling the heavier copper sheets to sink into the bottom of the precipitation area;
s7, starting a second material pumping pump, pumping the graphite floaters into a graphite collecting tank through a second discharging pipe, and carrying out subsequent treatment;
And S8, starting a first material pumping pump, discharging the copper sheet from the first discharging pipe, and collecting the copper sheet for the next crushing treatment.
The method has the advantages that after aeration is finished, graphite floats on the liquid surface due to lower density, a heavier copper sheet sinks into the bottom of the tank, and the copper sheet and graphite powder can be fully separated by adopting an aeration separation process.
The beneficial effects of the invention are as follows:
The aeration tank is divided into an aeration area and a sedimentation area by the partition plate, the stirring assembly and the aeration assembly are matched to enable the copper-containing negative electrode plate raw material to achieve the effect of separating copper sheets from graphite powder, after aeration, liquid containing graphite floats and copper sheets enters the sedimentation area through the communication holes and is sedimentated in the sedimentation area, the graphite floats float on the liquid surface after sedimentation, and heavier copper sheets are sunk into the bottom of the sedimentation area, so that the copper sheets are fully separated from the graphite powder.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing the structure of an aeration separation device for graphite regeneration according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
fig. 4 is a schematic diagram of a separation process according to the present invention.
In the figure:
1. Aeration tank, 2, partition plate, 3, aeration zone, 4, sedimentation zone, 5, communication hole, 6, feed pipe, 7, water inlet pipe, 8, air compressor, 9, air inlet pipe, 10, central guide cylinder, 11, ventilation hole, 12, driving motor, 13, motor mounting seat, 14, bearing, 15, stirring shaft, 16, stirring impeller, 17, first pump, 18, first discharge pipe, 19, graphite collecting tank, 20, second pump, 21, second discharge pipe, 22, inclined guide plate, 23, support base, 24, hopper.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, the aeration separation device for graphite regeneration comprises an aeration tank 1, wherein a baffle plate 2 is arranged in the aeration tank 1 to divide the aeration tank 1 into an aeration zone 3 and a sedimentation zone 4, a communication hole 5 for communicating the aeration zone 3 and the sedimentation zone 4 is formed in the upper end of the baffle plate 2, a feed pipe 6 is arranged at the upper end of the aeration tank 1, a water inlet pipe 7 is arranged at the lower end of the aeration tank 1, the feed pipe 6 and the water inlet pipe 7 are both communicated with the aeration zone 3, an aeration component is arranged in the aeration zone 3, and the aeration component is used for aerating the aeration zone 3;
the aeration tank 1 is provided with a stirring component, the stirring end of the stirring component stretches into the aeration zone 3, the upper end of the sedimentation zone 4 is provided with a second extraction component for extracting separated graphite floaters, and the lower end of the sedimentation zone 4 is provided with a first extraction component for extracting separated copper sheets.
The aeration tank 1 is divided into an aeration area 3 and a sedimentation area 4 by the partition board 2, and then the copper-containing negative electrode plate raw material is matched with the stirring component and the aeration component to achieve the effect of separating copper sheets from graphite powder, after aeration, liquid containing graphite floaters and copper sheets enters the sedimentation area 4 through the communication hole 5 and is sedimentated in the sedimentation area 4, the graphite floaters float on the liquid surface after sedimentation, and heavier copper sheets are sunk into the bottom of the sedimentation area 4, so that the copper sheets are fully separated from the graphite powder.
The aeration assembly comprises an air compressor 8, an air inlet pipe 9 and a central guide cylinder 10, wherein the central guide cylinder 10 is arranged in the aeration zone 3, the lower end of the central guide cylinder 10 is connected with the air compressor 8 through the air inlet pipe 9, and the air compressor 8 is arranged outside the lower end of the aeration tank 1.
It should be noted that the raw material of the copper-containing negative electrode plate and pure water are mixed in the aeration zone 3, air is continuously injected into the aeration zone 3 through the air compressor 8, and the materials with lighter density are brought to the liquid surface by the air flow due to different movement characteristics of the materials with different densities in the gas-liquid two-phase flow, and the materials with heavier density are settled to the bottom of the tank.
The side wall of the central guide cylinder 10 is provided with a plurality of vent holes 11, and the vent holes 11 are communicated with the aeration zone 3 in the central guide cylinder 10.
The stirring assembly comprises a driving motor 12, a motor mounting seat 13, a bearing 14, a stirring shaft 15 and a stirring impeller 16, wherein the driving motor 12 is arranged on the motor mounting seat 13, the motor mounting seat 13 is arranged at the upper end of the aeration tank 1 and is positioned above the aeration zone 3, the upper end of the stirring shaft 15 is connected with a motor shaft of the driving motor 12, the lower end of the stirring shaft 15 stretches into the aeration zone 3, and the stirring impeller 16 is arranged at the lower end of the stirring shaft 15.
It should be noted that, the stirring impeller 16 is driven by the driving motor 12 to rotate to achieve the stirring effect, so that the contact and mixing between the solid in the liquid and the air flow can be enhanced, the uniformity of the air-liquid two-phase flow can be improved, the separation effect can be improved, the flow characteristics of the liquid such as the flow speed can be changed, the generation, the rising and the breaking processes of bubbles can be influenced, and the separation effect can be adjusted.
The first extraction assembly comprises a first material extracting pump 17 and a first discharging pipe 18, one end of the first discharging pipe 18 is connected with the first material extracting pump 17, and the other end of the first discharging pipe 18 extends into the lower end of the precipitation zone 4 and is used for extracting separated copper sheets.
The copper sheet which is sunk into the bottom of the tank after being separated is extracted through the first extracting pump 17 and the first discharging pipe 18 and is subjected to subsequent crushing treatment.
The second extraction assembly comprises a graphite collecting tank 19, a second material extracting pump 20 and a second discharging pipe 21, one end of the second discharging pipe 21 is communicated with the graphite collecting tank 19, the other end of the second discharging pipe 21 stretches into the upper end of the sedimentation zone 4 and is used for extracting and extracting separated graphite floaters, and the second material extracting pump 20 is arranged on the second discharging pipe 21.
The graphite floats floating on the liquid surface are pumped into the graphite collecting tank 19 through the second pumping pump 20 and the second discharging pipe 21, and are subjected to subsequent treatment.
An inclined guide plate 22 is formed in the sedimentation zone 4, and the inclined guide plate 22 is arranged obliquely downwards from the upper end to the lower end of the sedimentation zone 4.
It should be noted here that the inclined guide plate 22 is used for guiding, so that the copper sheet can sink into the bottom of the pool better, and the subsequent extraction is facilitated.
The aeration tank also comprises a plurality of support bases 23, and the support bases 23 are arranged at the lower end of the aeration tank 1.
And the copper-containing negative electrode plate material feeding hopper 24 is also included, and the lower end of the hopper 24 is connected with the feeding pipe 6.
As shown in fig. 4, the specific separation steps of the aeration separation process of the present invention are as follows:
S1, feeding a raw material of a copper-containing negative electrode plate into an aeration zone 3 through a feed pipe 6;
step S2, adding pure water into the aeration zone 3 through a water inlet pipe 7, wherein the ratio of the raw materials of the copper-containing negative electrode piece and the pure water added in the step S1 is 1:2-1:4;
S3, starting an air compressor 8, enabling air to enter a central guide cylinder 10 from an air inlet pipe 9, enabling the air to enter an aeration zone 3 through a plurality of ventilation holes 11 on the central guide cylinder 10, and setting the air flow to be 500-700L/min;
S4, starting a driving motor 12 to drive a stirring shaft 15 to rotate so as to drive a stirring impeller 16 to rotate, wherein the stirring speed is set to 150-250 rpm;
Step S5, maintaining a normal temperature 25 ℃ state, and setting the aeration time to be two hours, namely, running the step S3 and the step S4 for 2-5 hours;
S6, enabling the liquid containing graphite floaters and copper sheets to enter a precipitation area 4 through a communication hole 5, precipitating in the precipitation area 4, floating the graphite floaters on the liquid surface after precipitation, and sinking the heavier copper sheets into the bottom of the precipitation area 4;
Step S7, starting a second pumping pump 20, pumping the graphite floaters into a graphite collecting tank 19 through a second discharging pipe 21, and carrying out subsequent treatment;
and S8, starting the first material pump 17, discharging the copper sheets from the first discharging pipe 18, and collecting the copper sheets for the next crushing treatment.
After aeration, graphite floats on the liquid surface due to lower density, and heavier copper sheets sink into the bottom of the tank, so that the copper sheets and graphite powder can be fully separated by adopting an aeration separation process, and the method not only improves the separation efficiency, but also reduces the operation complexity and environmental pollution, so that the method becomes a preferable process for treating the copper-containing negative electrode plate.
The capacity of the aeration tank 1 is designed to be 800L, the raw material of the copper-containing negative electrode plate is 100kg, the copper content is 20%, and the graphite content is 60%.
Example 1:
The pure water amount is 400L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 600L/min, the stirring speed is set to 220rpm, and the aeration time is set to 3.5 hours.
The separation result shows that the purity of graphite is 97%, and the recovery rate of copper sheet is 92%.
Example 2:
the pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 600L/min, the stirring speed is set to 220rpm, and the aeration time is set to 3.5 hours.
The separation result shows that the purity of graphite is 99.2 percent and the recovery rate of copper sheet is 94 percent.
Example 3:
Adding 600L of pure water, wherein the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 600L/min, the stirring speed is set to 220rpm, and the aeration time is set to 3.5 hours.
The separation result shows that the purity of graphite is 96 percent and the recovery rate of copper sheet is 90 percent.
From examples 1 to 3, the graphite purity and copper recovery were highest when the pure water amount added was 480L under the same other parameters.
Example 4:
The pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:2, the air flow is set to 600L/min, the stirring speed is set to 220rpm, and the aeration time is set to 3.5 hours.
The separation result is that the purity of graphite is 95% and the recovery rate of copper sheet is 91%.
Example 5:
The pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:4, the air flow is set to 600L/min, the stirring speed is set to 220rpm, and the aeration time is set to 3.5 hours.
The separation result is that the purity of graphite is 96 percent and the recovery rate of copper sheet is 92 percent.
According to the embodiment 2, the embodiment 4 and the embodiment 5, under the condition that other parameters are the same, when the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to pure water is 1:3, the graphite purity and the recovery rate of the copper sheet are the highest.
Example 6:
The pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 500L/min, the stirring speed is set to 220rpm, and the aeration time is set to 3.5 hours.
The separation result shows that the purity of graphite is 97 percent and the recovery rate of copper sheet is 92 percent.
Example 7:
The pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 700L/min, the stirring speed is set to 220rpm, and the aeration time is set to 3.5 hours.
The separation result is that the purity of graphite is 96 percent and the recovery rate of copper sheet is 91 percent.
From examples 2, 6 and 7, the air flow rate was set at 600L/min and the graphite purity and copper recovery were the highest, as was the case with the other parameters.
Example 8:
The pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 600L/min, the stirring speed is set to 200rpm, and the aeration time is set to 3.5 hours.
The separation result shows that the purity of graphite is 97 percent and the recovery rate of copper sheet is 92 percent.
Example 9:
The pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 600L/min, the stirring speed is set to 250rpm, and the aeration time is set to 3.5 hours.
The separation result is that the purity of graphite is 96 percent and the recovery rate of copper sheet is 91 percent.
From examples 2, 8 and 9, the stirring speed was set to 220rpm, and the graphite purity and copper recovery were the highest, as was the case with the other parameters.
Example 10:
The pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 600L/min, the stirring speed is set to 220rpm, and the aeration time is set to 2 hours.
The separation result is that the purity of graphite is 95% and the recovery rate of copper sheet is 90%.
Example 11:
The pure water amount is 480L, the solid-to-solid ratio of the raw material of the copper-containing negative electrode plate to the pure water is 1:3, the air flow is set to 600L/min, the stirring speed is set to 220rpm, and the aeration time is set to 5 hours.
The separation result shows that the purity of graphite is 97 percent and the recovery rate of copper sheet is 92 percent.
From examples 2, 10 and 11, the aeration time was set to 3.5 hours with the same other parameters, and the graphite purity and copper recovery rate were the highest.
As can be obtained from examples 1 to 11, the graphite purity and copper recovery were highest when the optimum process parameters were the following data:
aeration tank 1 capacity 800L
Adding 480L of pure water
Solid-to-liquid ratio of copper-containing negative electrode plate raw material to pure water: 1:3
The air flow rate was set at 600L/min
The stirring speed was set at 220rpm
Temperature at room temperature of 25 DEG C
The aeration time is set to be 3.5 hours
The best technological parameters obtain separation result of graphite purity 99.2% and copper sheet recovering rate 94%.
In summary, the beneficial effects of the invention are as follows:
The aeration tank 1 is divided into the aeration area 3 and the sedimentation area 4 by the partition board 2, the copper-containing negative electrode plate raw material is matched with the stirring assembly and the aeration assembly to achieve the effect of separating the copper sheet from the graphite powder, after aeration, liquid containing graphite floaters and the copper sheet enters the sedimentation area 4 through the communication hole 5 and is sedimentated in the sedimentation area 4, the graphite floaters float on the liquid surface after sedimentation, and the heavier copper sheet is sunk into the bottom of the sedimentation area 4, so that the copper sheet is fully separated from the graphite powder.
The components selected in the application are all universal standard components or components known to the person skilled in the art, and the structure and principle of the components are all known to the person skilled in the art through technical manuals or through routine experimental methods.
In describing embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. The aeration separation device for graphite regeneration is characterized by comprising an aeration tank (1), wherein a partition plate (2) is arranged in the aeration tank (1) to divide the interior of the aeration tank (1) into an aeration zone (3) and a sedimentation zone (4), a communication hole (5) for communicating the aeration zone (3) with the sedimentation zone (4) is formed in the upper end of the partition plate (2), a feed pipe (6) is arranged at the upper end of the aeration tank (1), a water inlet pipe (7) is arranged at the lower end of the aeration tank (1), the feed pipe (6) and the water inlet pipe (7) are both communicated with the aeration zone (3), an aeration assembly is arranged in the aeration zone (3), and the aeration assembly is used for ventilating the interior of the aeration zone (3);
The device is characterized in that a stirring assembly is arranged on the aeration tank (1), the stirring end of the stirring assembly stretches into the aeration zone (3), the upper end of the sedimentation zone (4) is provided with a second extraction assembly for extracting separated graphite floaters, and the lower end of the sedimentation zone (4) is provided with a first extraction assembly for extracting separated copper sheets.
2. An aeration separation device for graphite regeneration as claimed in claim 1, wherein the aeration assembly comprises an air compressor (8), an air inlet pipe (9) and a central guide cylinder (10), the central guide cylinder (10) is arranged in the aeration zone (3), the lower end of the central guide cylinder (10) is connected with the air compressor (8) through the air inlet pipe (9), and the air compressor (8) is arranged outside the lower end of the aeration tank (1).
3. An aeration separation device for graphite regeneration as claimed in claim 2, wherein a plurality of vent holes (11) are formed in the side wall of the central guide cylinder (10), and the vent holes (11) are communicated with the aeration zone (3) in the central guide cylinder (10).
4. The aeration separation device for graphite regeneration as claimed in claim 1, wherein the stirring assembly comprises a driving motor (12), a motor mounting seat (13), a bearing (14), a stirring shaft (15) and a stirring impeller (16), the driving motor (12) is arranged on the motor mounting seat (13), the motor mounting seat (13) is arranged at the upper end of the aeration tank (1) and is positioned above the aeration zone (3), the upper end of the stirring shaft (15) is connected with a motor shaft of the driving motor (12), the lower end of the stirring shaft (15) extends into the aeration zone (3), and the stirring impeller (16) is arranged at the lower end of the stirring shaft (15).
5. An aeration separation device for graphite regeneration as claimed in claim 1, wherein the first extraction assembly comprises a first extraction pump (17) and a first discharge pipe (18), one end of the first discharge pipe (18) is connected with the first extraction pump (17), and the other end of the first discharge pipe (18) extends into the lower end of the precipitation zone (4) for extracting separated copper sheets.
6. The aeration separation device for graphite regeneration as claimed in claim 1, wherein the second extraction assembly comprises a graphite collection tank (19), a second extraction pump (20) and a second discharge pipe (21), one end of the second discharge pipe (21) is communicated with the graphite collection tank (19), the other end of the second discharge pipe (21) extends into the upper end of the sedimentation zone (4) and is used for extracting and extracting separated graphite floating matters, and the second extraction pump (20) is installed on the second discharge pipe (21).
7. An aeration separation device for graphite regeneration as claimed in claim 1, wherein an inclined guide plate (22) is formed in said sedimentation zone (4), said inclined guide plate (22) being disposed obliquely downward from an upper end to a lower end of said sedimentation zone (4).
8. An aeration separation device for graphite regeneration as claimed in claim 1, further comprising a plurality of support bases (23), wherein a plurality of the support bases (23) are provided at the lower end of the aeration tank (1).
9. An aeration separation device for graphite regeneration as claimed in claim 1, further comprising a hopper (24) for feeding a raw material of a copper-containing negative electrode sheet, wherein a lower end of the hopper (24) is connected to the feed pipe (6).
10. An aeration separation process for graphite regeneration, which separates graphite from copper sheets by using the aeration separation device for graphite regeneration according to claims 1 to 9, comprising the following steps:
S1, throwing a raw material of a copper-containing negative electrode plate into an aeration zone (3) through a feed pipe (6);
step S2, adding pure water into the aeration zone (3) through a water inlet pipe (7), wherein the ratio of the raw materials of the copper-containing negative electrode plate and the pure water added in the step S1 is 1:2-1:4;
s3, starting an air compressor (8), enabling air to enter a central guide cylinder (10) from an air inlet pipe (9), enabling the air to enter an aeration zone (3) through a plurality of ventilation holes (11) on the central guide cylinder (10), and setting the air flow to be 500-700L/min;
s4, starting a driving motor (12) to drive a stirring shaft (15) to rotate so as to drive a stirring impeller (16) to rotate, wherein the stirring speed is set to 150-250 rpm;
Step S5, maintaining a normal temperature 25 ℃ state, and setting the aeration time to be two hours, namely, running the step S3 and the step S4 for 2-5 hours;
S6, enabling liquid containing graphite floaters and copper sheets to enter a precipitation area (4) through a communication hole (5) and to be precipitated in the precipitation area (4), wherein the graphite floaters float on the liquid surface after precipitation, and the heavier copper sheets sink into the bottom of the precipitation area (4);
s7, starting a second material pumping pump (20), pumping the graphite floaters into a graphite collecting tank (19) through a second discharging pipe (21), and performing subsequent treatment;
And S8, starting a first material pumping pump (17), discharging the copper sheet from the first discharging pipe (18), and collecting the copper sheet for the next crushing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411694067.XA CN119525000A (en) | 2024-11-25 | 2024-11-25 | Aeration separation device for graphite regeneration and separation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411694067.XA CN119525000A (en) | 2024-11-25 | 2024-11-25 | Aeration separation device for graphite regeneration and separation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119525000A true CN119525000A (en) | 2025-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411694067.XA Pending CN119525000A (en) | 2024-11-25 | 2024-11-25 | Aeration separation device for graphite regeneration and separation process thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN119525000A (en) |
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2024
- 2024-11-25 CN CN202411694067.XA patent/CN119525000A/en active Pending
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