Battery recovery method and battery recovery device

Abstract

The invention provides a battery recovery method and a battery recovery device, and the battery recovery method comprises the following steps: carrying out crushing treatment on a battery, and carrying out heating volatilization treatment on the crushed battery to obtain a gaseous mixed material and a solid mixed material; separating the solid mixed material to respectively obtain a diaphragm, a pole piece, black powder, copper particles and aluminum particles; in the separation process of the solid mixed material, the solid mixed material and / or an intermediate mixture obtained after the solid mixed material is separated are / is scattered. Through the technical scheme provided by the invention, the technical problem that the material separation effect of a battery recovery method in the prior art is relatively poor can be solved.

Description

Technical Field

[0001] The present invention relates to a battery recycling process and a battery recycling device, and more particularly, to a battery recycling method and a battery recycling device. Background Art

[0002] With the development of the domestic new energy industry, power batteries have been widely used and are rapidly developing in multiple industries such as new energy vehicles, energy storage, and electric bicycles. In the next few years, a large number of retired batteries will need to be processed, and the proper treatment of batteries is of great significance and has a profound impact on environmental protection, energy security, etc. Currently, the commonly used technologies are pyrometallurgy, hydrometallurgy, and mechanical separation. Among them, mechanical separation is used to separate solid materials with different specific gravities in the battery.

[0003] However, in mechanical separation, due to the mixing of materials with different particles, different states, and different shapes, there are often situations where separation cannot be achieved sufficiently, resulting in poor separation effects. Summary of the Invention

[0004] The main object of the present invention is to provide a battery recycling method and a battery recycling device to solve the technical problem of poor material separation effect in the existing battery recycling method.

[0005] To achieve the above object, according to one aspect of the present invention, there is provided a battery recycling method, including:

[0006] Crushing the battery and performing heat volatilization treatment on the crushed battery to obtain gaseous mixed materials and solid mixed materials;

[0007] Separating the solid mixed materials to respectively obtain a separator, electrode sheets, black powder, copper particles, and aluminum particles;

[0008] During the process of separating the solid mixed materials, performing a dispersing operation on the solid mixed materials and / or the intermediate mixture obtained after separating the solid mixed materials.

[0009] Further, performing a dispersing operation on the solid mixed materials and / or the intermediate mixture obtained after separating the solid mixed materials includes:

[0010] Performing vibration dispersion and / or impact dispersion on the solid mixed materials and / or the intermediate mixture obtained after separating the solid mixed materials.

[0011] Further, the intermediate mixture includes a first intermediate mixture; separating the solid mixed materials includes:

[0012] Screening the solid mixed materials to respectively obtain first black powder and a first intermediate mixture, and the particles of the first intermediate mixture are larger than those of the first black powder;

[0013] The first intermediate mixture is dispersed to separately obtain a second intermediate mixture and a third intermediate mixture, and the particles of the third intermediate mixture are larger than those of the second intermediate mixture.

[0014] Further, after the first intermediate mixture is dispersed, the battery recycling method further includes:

[0015] The second intermediate mixture is screened to separately obtain a second black powder and a fourth intermediate mixture, and the particles of the fourth intermediate mixture are larger than those of the second black powder;

[0016] The fourth intermediate mixture and the third intermediate mixture are mixed and then separated, and hammer crushing and dispersion are performed during the process of mixing and separating the fourth intermediate mixture and the third intermediate mixture.

[0017] Further, performing hammer crushing and dispersion during the process of mixing and separating the fourth intermediate mixture and the third intermediate mixture includes:

[0018] The fourth intermediate mixture and the third intermediate mixture are mixed and separated to obtain a first intermediate pole piece material;

[0019] The first intermediate pole piece material is hammer crushed, dispersed and separated.

[0020] Further, mixing and separating the fourth intermediate mixture and the third intermediate mixture to obtain a first intermediate pole piece material includes:

[0021] The fourth intermediate mixture and the third intermediate mixture are subjected to primary air separation to separately obtain a diaphragm mixture and a fifth intermediate mixture;

[0022] The diaphragm mixture is screened to obtain a second intermediate pole piece material and a diaphragm, and the diaphragm is collected;

[0023] The second intermediate pole piece material and the fifth intermediate mixture are subjected to secondary air separation to obtain a sixth intermediate mixture and a seventh intermediate mixture, and the particles of the seventh intermediate mixture are larger than those of the sixth intermediate mixture;

[0024] The sixth intermediate mixture is screened to obtain a first intermediate pole piece material.

[0025] Further, screening the sixth intermediate mixture to obtain a first intermediate pole piece material includes:

[0026] The sixth intermediate mixture is subjected to electrostatic separation or eddy current separation to obtain a third intermediate pole piece material and a diaphragm, and the diaphragm is collected;

[0027] Magnetic separation is performed on the third intermediate electrode material to remove magnetic substances and obtain the first intermediate electrode material.

[0028] Further, the battery recycling method further includes:

[0029] Magnetic separation is performed on the seventh intermediate mixture to remove magnetic substances and obtain a copper-aluminum mixture;

[0030] The copper-aluminum mixture is sorted to obtain copper particles and aluminum particles respectively.

[0031] Further, performing hammer crushing and dispersion on the first intermediate electrode material and separating it includes:

[0032] The first intermediate electrode material is hammer-crushed and dispersed, and the hammer-crushed and dispersed first intermediate electrode material is subjected to first-stage separation to obtain an eighth intermediate mixture and dust, and the particles of the eighth intermediate mixture are larger than those of the dust;

[0033] The eighth intermediate mixture is subjected to second-stage separation to obtain third black powder and a ninth intermediate mixture respectively, and the particles of the ninth intermediate mixture are larger than those of the third black powder;

[0034] The ninth intermediate mixture is polished and granulated, and the polished and granulated ninth intermediate mixture is subjected to third-stage separation to obtain a tenth intermediate mixture and second dust respectively, and the particles of the tenth intermediate mixture are larger than those of the second dust;

[0035] The tenth intermediate mixture is subjected to fourth-stage separation to obtain fourth black powder, separator, copper particles and aluminum particles respectively.

[0036] Further, performing four-stage separation on the tenth intermediate mixture includes:

[0037] The tenth intermediate mixture is screened to obtain an eleventh intermediate mixture, a twelfth intermediate mixture and part of the fourth black powder respectively, and the particles of the eleventh intermediate mixture are larger than those of the twelfth intermediate mixture;

[0038] The eleventh intermediate mixture is polished and granulated, and the polished and granulated eleventh intermediate mixture is subjected to fourth-stage separation again;

[0039] The twelfth intermediate mixture is subjected to fifth-stage separation to obtain part of the fourth black powder and a thirteenth intermediate mixture respectively, and the particles of the thirteenth intermediate mixture are larger than those of the fourth black powder;

[0040] The thirteenth intermediate mixture is sorted by specific gravity to obtain separator, copper particles and aluminum particles respectively.

[0041] Further, the battery recycling method further includes:

[0042] High-temperature combustion is carried out on the gaseous mixed material to obtain the combusted gas, and the temperature of the combusted gas is reduced and alkali-washed; or,

[0043] At least two-stage condensation separation is carried out on the gaseous mixed material, and the temperature of the tail gas after condensation separation is reduced and alkali-washed.

[0044] Furthermore, the battery recycling method further includes:

[0045] The heating temperature for the heating and volatilization treatment of the crushed battery is T, where T ≤ 200°C; and / or,

[0046] The black powder is collected by negative pressure suction, and the collected black powder is separated to obtain a first separation product and a second separation product. The particles of the first separation product are larger than those of the second separation product. The first separation product is collected, and the second separation product is discharged after spraying.

[0047] According to another aspect of the present invention, a battery recycling device is provided, including:

[0048] A crushing device for crushing the battery;

[0049] A heating and volatilization device, the inlet of the heating and volatilization device is connected to the outlet of the crushing device, and the heating and volatilization device is used for heating and volatilization treatment of the crushed battery to obtain a gaseous mixed material and a solid mixed material;

[0050] A separation device, the inlet of the separation device is connected to the outlet of the heating and volatilization device, and the separation device is used for separating the solid mixed material;

[0051] A dispersing device for performing a dispersing operation on the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material.

[0052] Furthermore, the dispersing device includes:

[0053] A vibrating dispersing machine for vibrating and dispersing the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material; and / or,

[0054] A hammer crusher for impact-dispersing the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material.

[0055] Furthermore, the battery recycling device further includes:

[0056] A first screening device for screening the solid mixed material to respectively obtain a first black powder and a first intermediate mixture. The particles of the first intermediate mixture are larger than those of the first black powder;

[0057] A vibration disperser that disperses the first intermediate mixture to obtain a second intermediate mixture and a third intermediate mixture respectively, with the particles of the third intermediate mixture being larger than those of the second intermediate mixture.

[0058] Furthermore, the battery recycling device further includes:

[0059] A second screening device that screens the second intermediate mixture to obtain second black powder and a fourth intermediate mixture respectively, with the particles of the fourth intermediate mixture being larger than those of the second black powder;

[0060] A first separation component that mixes and then separates the fourth intermediate mixture and the third intermediate mixture;

[0061] A hammer crusher that performs hammer crushing and dispersion during the process of mixing and separating the fourth intermediate mixture and the third intermediate mixture.

[0062] Furthermore, the first separation component includes:

[0063] A primary air separation device that performs primary air separation on the fourth intermediate mixture and the third intermediate mixture to obtain a diaphragm mixture and a fifth intermediate mixture respectively;

[0064] A third screening device that screens the diaphragm mixture to obtain second intermediate electrode sheet materials and diaphragms, and collects the diaphragms;

[0065] A secondary air separation device that performs secondary air separation on the second intermediate electrode sheet materials and the fifth intermediate mixture to obtain a sixth intermediate mixture and a seventh intermediate mixture respectively, with the particles of the seventh intermediate mixture being larger than those of the sixth intermediate mixture;

[0066] A second separation component that screens the sixth intermediate mixture to obtain first intermediate electrode sheet materials, and the discharge port of the second separation component is communicated with the feed port of the hammer crusher so that the hammer crusher performs hammer crushing and dispersion on the first intermediate electrode sheet materials.

[0067] Furthermore, the second separation component includes:

[0068] A first sorting device and a first magnetic separation device. The first sorting device performs electrostatic sorting or eddy current sorting on the sixth intermediate mixture to obtain third intermediate electrode sheet materials and diaphragms, and collects the diaphragms; the first magnetic separation device performs magnetic separation on the third intermediate electrode sheet materials to remove magnetic substances and obtain first intermediate electrode sheet materials; and / or,

[0069] A second magnetic separation device and a second sorting device. The second magnetic separation device performs magnetic separation on the seventh intermediate mixture to remove magnetic substances and obtain a copper-aluminum mixture;

[0070] The second sorting device sorts the copper-aluminum mixture to obtain copper particles and aluminum particles respectively.

[0071] Further, the battery recycling device further includes:

[0072] A primary separation device that performs a first-stage separation on the first intermediate electrode sheet material broken and dispersed by hammering to obtain an eighth intermediate mixture and dust, where the particles of the eighth intermediate mixture are larger than those of the dust;

[0073] A secondary separation device that performs a second-stage separation on the eighth intermediate mixture to respectively obtain third black powder and a ninth intermediate mixture, where the particles of the ninth intermediate mixture are larger than those of the third black powder;

[0074] A grinding and granulating machine that grinds and granulates the ninth intermediate mixture;

[0075] A tertiary separation device that performs a third-stage separation on the ninth intermediate mixture after grinding and granulating to respectively obtain a tenth intermediate mixture and second dust, where the particles of the tenth intermediate mixture are larger than those of the second dust;

[0076] A quaternary separation device that performs a fourth-stage separation on the tenth intermediate mixture to respectively obtain fourth black powder, a separator, copper particles, and aluminum particles.

[0077] Further, the primary separation device is a cyclone separator; and / or,

[0078] The secondary separation device is a first screening machine; and / or,

[0079] The tertiary separation device is a cyclone separator; and / or,

[0080] The quaternary separation device is a second screening machine.

[0081] Further, the quaternary separation device has a first separation port, a second separation port, and a third separation port that are spaced apart to respectively obtain an eleventh intermediate mixture, a twelfth intermediate mixture, and a part of the fourth black powder through the first separation port, the second separation port, and the third separation port, where the particles of the eleventh intermediate mixture are larger than those of the twelfth intermediate mixture; the battery recycling device further includes:

[0082] A mill that grinds and granulates the eleventh intermediate mixture, and the discharge port of the mill is communicated with the feed port of the quaternary separation device to perform a fourth-stage separation on the eleventh intermediate mixture after grinding and granulating again;

[0083] A quinary separation device, where the feed port of the quinary separation device is communicated with the second separation port to perform a fifth-stage separation on the twelfth intermediate mixture to respectively obtain a part of the fourth black powder and a thirteenth intermediate mixture, where the particles of the thirteenth intermediate mixture are larger than those of the fourth black powder;

[0084] A specific gravity separation device, at least part of the specific gravity separation device is in communication with the five-stage separation device to perform specific gravity separation on the thirteenth intermediate mixture to obtain a separator, copper particles, and aluminum particles respectively.

[0085] Furthermore, the battery recycling device further includes:

[0086] A combustion furnace and an alkali washing device. The feed inlet of the combustion furnace is in communication with the gas outlet of the heating and volatilization device to introduce the gaseous mixed material. The combustion furnace performs high-temperature combustion on the gaseous mixed material to obtain the combusted gas, and the alkali washing device cools and alkali washes the combusted gas; or,

[0087] A condensation device and an alkali washing device. The feed inlet of the condensation device is in communication with the gas outlet of the heating and volatilization device to introduce the gaseous mixed material. The condensation device performs condensation separation on the gaseous mixed material. The feed inlet of the alkali washing device is in communication with the tail gas outlet of the condensation device to alkali wash the tail gas after condensation separation by the condensation device.

[0088] Furthermore, the battery recycling device further includes:

[0089] A dust removal device. The black powder discharge ports of the first screening device, the second screening device, the secondary separation device, the fourth separation device, and the fifth separation device are all in communication with the feed inlet of the dust removal device. The dust removal device has a first outlet for discharging the first separation product and a second outlet for discharging the second separation product. The particles of the first separation product are larger than those of the second separation product;

[0090] A storage bin, the inlet of the storage bin is in communication with the first outlet;

[0091] A spraying device, the inlet of the spraying device is in communication with the second outlet, and the spraying device is used for spraying the second separation product.

[0092] Applying the technical solution of the present invention, during the separation process of the solid mixed material, the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material are subjected to a dispersing operation, so that the material can be fully dispersed and broken up, reducing the material wrapping situation, facilitating the full separation of the material after dispersion and breakup, and improving the separation effect of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0094] Figure 1 Shows a schematic flow chart of the battery recycling method provided by an embodiment of the present invention;

[0095] Figure 2 The structural schematic diagram of a battery recycling device provided according to an embodiment of the present invention is shown.

[0096] Among them, the above-mentioned drawings include the following reference numerals:

[0097] 101, the first conveying device; 102, the crushing device; 103, the second conveying device; 104, the heating and volatilization device; 105, the first screening device; 106, the third conveying device; 107, the vibration dispersing machine; 108, the second screening device; 109, the fourth conveying device; 110, the dispersing device; 111, the cyclone dust collector; 112, the secondary cyclone; 113, the secondary air separation device; 114, the primary air separation device; 115, the second magnetic separation device; 116, the third screening device; 117, the first sorting device; 118, the hammer crusher; 119, the primary separation device; 120, the bag filter; 121, the secondary separation device; 122, the mill; 124, the tertiary separation device; 126, the specific gravity separation device; 127, the specific gravity separator; 128, the quaternary separation device; 129, the quinary separation device; 130, the silo; 131, the dust removal device; 132, the spraying device; 133, the first chimney; 134, the first filter; 136, the quenching device; 137, the water washing tower; 138, the secondary alkali washing device; 139, the tertiary alkali washing device; 140, the flue gas mixer; 141, the electric heater; 142, the SCR reactor; 143, the second chimney; 144, the first dust collector; 146, the second sorting device. Detailed implementation manners

[0098] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0099] As Figure 1 shown, Embodiment 1 of the present invention provides a battery recycling method, and the recycling method includes: performing a crushing treatment on the battery, and performing a heating and volatilization treatment on the crushed battery to obtain a gaseous mixture and a solid mixture; separating the solid mixture to respectively obtain a separator, a pole piece, black powder, copper particles and aluminum particles; during the separation of the solid mixture, performing a dispersing operation on the solid mixture and / or an intermediate mixture obtained after the separation of the solid mixture.

[0100] By adopting the battery recycling method provided in this embodiment, during the separation process of the solid mixed material, the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material are subjected to a dispersion operation, so that the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material can be fully dispersed and broken up, reducing the situation that the materials are difficult to separate due to material wrapping during the separation process of the solid mixed material, facilitating the full separation of the materials after dispersion and breakup, ensuring the effective progress of the separation process, and improving the separation effect of the materials.

[0101] Specifically, the operation of dispersing the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material includes: vibrating and / or impacting to disperse the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material. By adopting such a method, it is possible to facilitate the full dispersion of the solid mixed material and / or the intermediate mixture obtained after separating the solid mixed material, so as to ensure the effective progress of the separation.

[0102] Specifically, the intermediate mixture includes a first intermediate mixture; the separation of the solid mixed material includes: screening the solid mixed material to respectively obtain a first black powder and a first intermediate mixture, and the particles of the first intermediate mixture are larger than those of the first black powder; dispersing the first intermediate mixture to respectively obtain a second intermediate mixture and a third intermediate mixture, and the particles of the third intermediate mixture are larger than those of the second intermediate mixture. In this way, it is possible to facilitate the dispersion of the first intermediate mixture, avoid the situation of material wrapping and adhesion in the first intermediate mixture, and effectively improve the separation effect.

[0103] Specifically, after dispersing the first intermediate mixture, the battery recycling method further includes: screening the second intermediate mixture to respectively obtain a second black powder and a fourth intermediate mixture, and the particles of the fourth intermediate mixture are larger than those of the second black powder; mixing the fourth intermediate mixture and the third intermediate mixture and then separating them, and performing hammer crushing and dispersion during the separation process after mixing the fourth intermediate mixture and the third intermediate mixture. In this way, it is possible to facilitate the effective and full dispersion and separation of the materials obtained after mixing and separating the fourth intermediate mixture and the third intermediate mixture, and better avoid the situation of material wrapping during the separation process.

[0104] In this embodiment, performing hammer crushing and dispersion during the separation process after mixing the fourth intermediate mixture and the third intermediate mixture includes: mixing and separating the fourth intermediate mixture and the third intermediate mixture to obtain a first intermediate pole piece material; performing hammer crushing and dispersion on the first intermediate pole piece material and then separating it. In this way, it is possible to facilitate better hammer crushing and dispersion of the first intermediate pole piece material, avoid the situation that the pole piece includes materials, and facilitate improving the wrapping situation of the pole piece with materials such as black powder and separator.

[0105] Specifically, after mixing and separating the fourth intermediate mixture and the third intermediate mixture to obtain the first intermediate electrode sheet material, it includes: performing primary air separation on the fourth intermediate mixture and the third intermediate mixture to respectively obtain a separator mixture and a fifth intermediate mixture; screening the separator mixture to obtain a second intermediate electrode sheet material and a separator, and collecting the separator; performing secondary air separation on the second intermediate electrode sheet material and the fifth intermediate mixture to obtain a sixth intermediate mixture and a seventh intermediate mixture, where the particles of the seventh intermediate mixture are larger than those of the sixth intermediate mixture; screening the sixth intermediate mixture to obtain the first intermediate electrode sheet material. In this way, it is possible to facilitate better improvement of the separation effect, so as to gradually separate materials with different particles and different categories and improve the separation effect.

[0106] In this embodiment, screening the sixth intermediate mixture to obtain the first intermediate electrode sheet material includes: performing electrostatic separation or eddy current separation on the sixth intermediate mixture to obtain a third intermediate electrode sheet material and a separator, and collecting the separator; performing magnetic separation on the third intermediate electrode sheet material to remove magnetic substances and obtain the first intermediate electrode sheet material. In this way, it is possible to facilitate the step-by-step and multiple separation of the electrode sheet, separator, and black powder to better improve the separation effect. In addition, magnetic separation also prevents magnetic substances from entering the subsequent hammer crusher 118 and affecting the service life of the hammer crusher 118.

[0107] Specifically, the battery recycling method further includes: performing magnetic separation on the seventh intermediate mixture to remove magnetic substances and obtain a copper-aluminum mixture; sorting the copper-aluminum mixture to respectively obtain copper particles and aluminum particles. In this way, it is possible to facilitate the separate recovery of copper particles and aluminum particles and facilitate recycling.

[0108] In this embodiment, hammer-crushing and separating the first intermediate electrode sheet material includes: hammer-crushing the first intermediate electrode sheet material, and performing first-stage separation on the hammer-crushed first intermediate electrode sheet material to obtain an eighth intermediate mixture and dust, where the particles of the eighth intermediate mixture are larger than those of the dust; performing second-stage separation on the eighth intermediate mixture to respectively obtain third black powder and a ninth intermediate mixture, where the particles of the ninth intermediate mixture are larger than those of the third black powder; performing grinding and granulation on the ninth intermediate mixture, and performing third-stage separation on the ground and granulated ninth intermediate mixture to respectively obtain a tenth intermediate mixture and second dust, where the particles of the tenth intermediate mixture are larger than those of the second dust; performing fourth-stage separation on the tenth intermediate mixture to respectively obtain fourth black powder, a separator, copper particles, and aluminum particles. With such a setting, through multi-stage separation, it is possible to facilitate the step-by-step separation of the fourth black powder, separator, copper particles, and aluminum particles and ensure the separation effect.

[0109] Specifically, a four-stage separation is performed on the tenth intermediate mixture, including: screening the tenth intermediate mixture to obtain an eleventh intermediate mixture, a twelfth intermediate mixture, and a part of the fourth black powder respectively, where the particles of the eleventh intermediate mixture are larger than those of the twelfth intermediate mixture; grinding and granulating the eleventh intermediate mixture, and performing a fourth-stage separation on the ground and granulated eleventh intermediate mixture again; performing a fifth-stage separation on the twelfth intermediate mixture to obtain a part of the fourth black powder and a thirteenth intermediate mixture respectively, where the particles of the thirteenth intermediate mixture are larger than those of the fourth black powder; performing specific gravity separation on the thirteenth intermediate mixture to obtain a separator, copper particles, and aluminum particles respectively. By adopting such a method, effective separation can be achieved, and a part of the separator, copper particles, and aluminum particles can be obtained again.

[0110] Specifically, the battery recycling method further includes treating the gaseous mixed material.

[0111] Specifically, in order to treat the gaseous mixed material, the gaseous mixed material can be subjected to high-temperature combustion to obtain the combustion gas, and the combustion gas can be cooled and alkali-washed to ensure the full treatment of the gaseous mixed material and ensure that the tail gas meets the standards before being discharged. Alternatively, in order to treat the gaseous mixed material, the gaseous mixed material can also be subjected to at least two-stage condensation separation, and the tail gas after condensation separation can be cooled and alkali-washed to ensure the full treatment of the gaseous mixed material and ensure that the tail gas meets the standards before being discharged.

[0112] In this embodiment, the heating temperature for the heating and volatilization treatment of the crushed battery in the battery recycling method is T, where T ≤ 200°C. In this way, the electrolyte in the crushed battery can be volatilized to form organic waste gas. By making T ≤ 200°C, the electrolyte will not decompose during the heating and volatilization process, thus avoiding the formation of fluorides and reducing the fluorides generated by cracking at high temperatures. At the same time, the energy consumption can also be reduced. Preferably, 80°C ≤ T ≤ 100°C.

[0113] Specifically, the battery recycling method further includes collecting the black powder by negative pressure suction, and separating the collected black powder to obtain a first separation product and a second separation product, where the particles of the first separation product are larger than those of the second separation product, collecting the first separation product, and discharging the second separation product after spraying. In this way, it is convenient to centrally treat the black powder to ensure the decontamination operation of the black powder and discharge the qualified tail gas.

[0114] Specifically, the intermediate mixtures in this embodiment include the first intermediate mixture to the thirteenth intermediate mixture. The black powders include the first black powder to the fourth black powder.

[0115] As Figure 2As shown in the figure, Embodiment 2 of the present invention provides a battery recycling device, which includes: a crushing device 102, a heating and volatilization device 104, a separation device, and a dispersing device, for performing crushing treatment on the battery. The inlet of the heating and volatilization device 104 is connected to the outlet of the crushing device 102, and the heating and volatilization device 104 is used to perform heating and volatilization treatment on the crushed battery to obtain a gaseous mixture and a solid mixture. The inlet of the separation device is connected to the outlet of the heating and volatilization device 104, and the separation device is used to separate the solid mixture. The dispersing device is used to perform a dispersing operation on the solid mixture and / or the intermediate mixture obtained after the separation of the solid mixture.

[0116] By using the battery recycling device provided in this embodiment, during the separation process of the solid mixture by the separation device, the dispersing device performs a dispersing operation on the solid mixture and / or the intermediate mixture obtained after the separation of the solid mixture, so that the solid mixture and / or the intermediate mixture obtained after the separation of the solid mixture can be fully dispersed and broken up, reducing the situation of material wrapping and difficult separation during the separation process of the solid mixture, facilitating the full separation of the material after dispersion and breakup, ensuring the effective progress of the separation process, and improving the separation effect of the material.

[0117] It should be noted that the connection relationship between the various devices of the battery recycling device can be understood as the connection of different communication ports or the connection through a connecting pipe.

[0118] In this embodiment, the dispersing device includes a vibration dispersing machine 107 and / or a hammer crusher 118. The vibration dispersing machine 107 is used to perform vibration dispersion on the solid mixture and / or the intermediate mixture obtained after the separation of the solid mixture, so as to fully disperse the material to be separated and facilitate subsequent separation. The hammer crusher 118 is used to perform impact dispersion on the solid mixture and / or the intermediate mixture obtained after the separation of the solid mixture, so as to fully disperse the material to be separated and further facilitate subsequent separation.

[0119] Specifically, the separation device includes: a first screening device 105 and a vibration dispersing machine 107. The first screening device 105 screens the solid mixture to obtain a first black powder and a first intermediate mixture respectively. The particles of the first intermediate mixture are larger than those of the first black powder. The vibration dispersing machine 107 disperses the first intermediate mixture to obtain a second intermediate mixture and a third intermediate mixture respectively. The particles of the third intermediate mixture are larger than those of the second intermediate mixture. In this way, it is convenient to disperse the first intermediate mixture, avoid the situation of material wrapping and sticking in the first intermediate mixture, and effectively improve the separation effect.

[0120] In this embodiment, the separation device further includes: a second screening device 108 and a first separation component. The second screening device 108 screens the second intermediate mixture to obtain a second black powder and a fourth intermediate mixture respectively, and the particles of the fourth intermediate mixture are larger than those of the second black powder. The first separation component mixes and then separates the fourth intermediate mixture and the third intermediate mixture. The battery recycling device further includes a hammer crusher 118, which performs hammer crushing and dispersing during the process of mixing and separating the fourth intermediate mixture and the third intermediate mixture. In this way, it is possible to facilitate the effective and sufficient dispersion and separation of the materials obtained after mixing and separating the fourth intermediate mixture and the third intermediate mixture, and better avoid situations such as material wrapping during the separation process.

[0121] Specifically, the first separation component includes: a primary air separation device 114, a third screening device 116, a secondary air separation device 113, and a second separation component. The primary air separation device 114 performs primary air separation on the fourth intermediate mixture and the third intermediate mixture to obtain a diaphragm mixture and a fifth intermediate mixture respectively. The third screening device 116 screens the diaphragm mixture to obtain a second intermediate electrode sheet material and a diaphragm, and collects the diaphragm. The secondary air separation device 113 performs secondary air separation on the second intermediate electrode sheet material and the fifth intermediate mixture to obtain a sixth intermediate mixture and a seventh intermediate mixture, and the particles of the seventh intermediate mixture are larger than those of the sixth intermediate mixture. The second separation component screens the sixth intermediate mixture to obtain a first intermediate electrode sheet material, and the discharge port of the second separation component is communicated with the feed port of the hammer crusher 118, so that the hammer crusher 118 performs hammer crushing and dispersing on the first intermediate electrode sheet material. In this way, it is possible to facilitate better improvement of the separation effect, so as to gradually separate materials with different particles and different categories and improve the separation effect.

[0122] Specifically, the feed port of the third screening device 116 is communicated with the outlet of the diaphragm mixture discharged from the primary air separation device 114, and the feed port of the secondary air separation device 113 is communicated with the outlet of the second intermediate electrode sheet material of the third screening device 116 and the outlet of the fifth intermediate mixture of the primary air separation device 114. The feed port of the second separation component is communicated with the outlet of the sixth intermediate mixture discharged from the secondary air separation device 113.

[0123] In this embodiment, the second separation component includes: a first sorting device 117 and a first magnetic separation device. The first sorting device 117 performs electrostatic sorting or eddy current sorting on the sixth intermediate mixture to obtain a third intermediate electrode sheet material and a diaphragm, and collects the diaphragm. The first magnetic separation device performs magnetic separation on the third intermediate electrode sheet material to remove magnetic substances and obtain a first intermediate electrode sheet material. In this way, it is possible to facilitate the step-by-step and multiple separation of electrode sheets, diaphragms, and black powders to better improve the separation effect. In addition, magnetic separation also prevents magnetic substances from entering the subsequent hammer crusher 118 and affecting the service life of the hammer crusher 118.

[0124] The second separation component includes: the second separation component includes a second magnetic separation device 115 and a second sorting device 146. The second magnetic separation device 115 performs magnetic separation on the seventh intermediate mixture to remove magnetic substances and obtain a copper-aluminum mixture. The second sorting device 146 sorts the copper-aluminum mixture to obtain copper particles and aluminum particles respectively. In this way, it is convenient to separately recover copper particles and aluminum particles for recycling.

[0125] In this embodiment, the separation device further includes: a primary separation device 119, a secondary separation device 121, a grinding and granulating machine, a tertiary separation device 124, and a quaternary separation device 128. The primary separation device 119 performs a first-stage separation on the first intermediate pole piece material broken and dispersed by hammering to obtain an eighth intermediate mixture and dust. The particles of the eighth intermediate mixture are larger than those of the dust. The secondary separation device 121 performs a second-stage separation on the eighth intermediate mixture to obtain third black powder and a ninth intermediate mixture respectively. The particles of the ninth intermediate mixture are larger than those of the third black powder; the grinding and granulating machine grinds and granulates the ninth intermediate mixture; the tertiary separation device 124 performs a third-stage separation on the ground and granulated ninth intermediate mixture to obtain a tenth intermediate mixture and second dust respectively. The particles of the tenth intermediate mixture are larger than those of the second dust; the quaternary separation device 128 performs a fourth-stage separation on the tenth intermediate mixture to obtain fourth black powder, separator, copper particles, and aluminum particles respectively. With such a structural arrangement, it is convenient to separate the material through multiple separation devices, improve the separation effect, and fully separate the fourth black powder, separator, copper particles, and aluminum particles.

[0126] Specifically, the primary separation device 119 is a cyclone separator; and / or, the secondary separation device 121 is a first screening machine; and / or, the tertiary separation device 124 is a cyclone separator; and / or, the quaternary separation device 128 is a second screening machine. In this way, it is convenient to fully ensure the separation effect.

[0127] In this embodiment, the four-stage separation device 128 has a first separation port, a second separation port, and a third separation port that are spaced apart, so as to obtain an eleventh intermediate mixture, a twelfth intermediate mixture, and a part of the fourth black powder through the first separation port, the second separation port, and the third separation port respectively. The particles of the eleventh intermediate mixture are larger than those of the twelfth intermediate mixture. The battery recycling device further includes: a mill 122 that grinds and granulates the eleventh intermediate mixture. The discharge port of the mill 122 is communicated with the feed port of the four-stage separation device 128 to perform a fourth-stage separation on the ground and granulated eleventh intermediate mixture again. The separation device further includes a five-stage separation device 129 and a specific gravity separation device 126. The feed port of the five-stage separation device 129 is communicated with the second separation port to perform a fifth-stage separation on the twelfth intermediate mixture to respectively obtain a part of the fourth black powder and a thirteenth intermediate mixture. The particles of the thirteenth intermediate mixture are larger than those of the fourth black powder. The specific gravity separation device 126 is at least partially communicated with the five-stage separation device 129 to perform specific gravity separation on the thirteenth intermediate mixture to respectively obtain a separator, copper particles, and aluminum particles. With such a structural arrangement, it is possible to facilitate effective separation and obtain a part of the separator, copper particles, and aluminum particles again.

[0128] Specifically, the battery recycling device further includes a combustion furnace and an alkali washing device. The feed port of the combustion furnace is communicated with the gas outlet of the heating and volatilization device 104 to introduce the gaseous mixed material. The combustion furnace performs high-temperature combustion on the gaseous mixed material to obtain the combusted gas, and the alkali washing device cools and alkali washes the combusted gas. With such a structural arrangement, it is possible to facilitate ensuring the full treatment of the gaseous mixed material to ensure that the tail gas meets the standards before being discharged. Specifically, the combustion furnace can be a TO furnace.

[0129] Alternatively, the battery recycling device further includes a condensation device and an alkali washing device. The feed port of the condensation device is communicated with the gas outlet of the heating and volatilization device 104 to introduce the gaseous mixed material. The condensation device performs condensation separation on the gaseous mixed material. The feed port of the alkali washing device is communicated with the tail gas outlet of the condensation device to alkali wash the tail gas after condensation separation by the condensation device. With such a structural arrangement, it is possible to facilitate ensuring the full treatment of the gaseous mixed material to ensure that the tail gas meets the standards before being discharged. Specifically, the condensation device can be a multi-stage device to facilitate performing condensation separation step by step.

[0130] In this embodiment, the battery recycling device further includes: a dust removal device 131, a silo 130, and a spraying device 132. The black powder discharge ports of the first screening device 105, the second screening device 108, the secondary separation device 121, the quaternary separation device 128, and the quinary separation device 129 are all connected to the feed port of the dust removal device 131. The dust removal device 131 has a first outlet for discharging the first separation product and a second outlet for discharging the second separation product. The particles of the first separation product are larger than those of the second separation product. The inlet of the silo 130 is connected to the first outlet, and the inlet of the spraying device 132 is connected to the second outlet. The spraying device 132 is used to spray the second separation product. With such a structure, it is possible to facilitate the full collection and treatment of black powder and ensure that the discharged tail gas meets the environmental protection requirements.

[0131] Specifically, the specific process flow corresponding to the above embodiment is as follows:

[0132] The material (battery) to be processed is put into the crushing device 102 through the first conveying device 101 for crushing. The crushed material enters the heating and volatilization device 104 through the second conveying device 103. Specifically, the heating and volatilization device 104 is a low-temperature volatilization device, and the maximum heating temperature of the heating and volatilization device 104 is ≤200°C. After passing through the heating and volatilization device 104, the material is divided into two parts, one part is the gaseous waste gas, and the other part is the solid-phase material.

[0133] The treatment method for the tail gas is as follows: The gaseous waste gas evaporates from the low-temperature volatilization device, then passes through the first filter 134 to remove dust, enters the combustion furnace for combustion, the temperature of the combustion furnace is ≤1100°C, the combustion furnace can be a TO furnace, and the combustion gas passes through the quenching device 136 to be cooled to 200°C and then passes through the first dust collector 144 and then through the water washing tower 137 to absorb the fluoride in the waste gas. Then it passes through the secondary alkali washing device 138 to further absorb the fluoride, and finally passes through the tertiary alkali washing device 139 to absorb the fluoride. Then it passes through the flue gas mixer 140 for mixing, passes through the electric heater 141 for heating to increase the gas temperature, and then passes through the SCR reactor 142 to react to remove nitrogen oxides. Finally, the tail gas meets the standards and is discharged through the second chimney 143.

[0134] The solid-phase materials are screened by the first screening device 105, and the small-particle black substances (the first black powder) are discharged. The other large-particle materials (the first intermediate mixture) enter the dispersing device (vibrating dispersing machine 107) through the third conveying device 106 to further disperse the materials and solve the problem of partially coated materials. Part of the small-particle materials (the second intermediate mixture) after dispersion pass through the second screening device 108. After screening, the small-particle black substances (the second black powder) are further separated from the medium-particle electrode sheet materials (the fourth intermediate mixture). The medium-particle materials are combined with the large electrode sheet materials (the third intermediate mixture) after being dispersed by the dispersing device and enter the fourth conveying device 109 together, then enter the dispersing device 110, and then enter the primary air separation device 114 to select the light-weight diaphragms (diaphragm mixture). The diaphragms pass through the cyclone dust collector 111 and enter the third screening device 116 to separate the diaphragms from the small-particle electrode sheet materials (the second intermediate electrode sheet materials). The diaphragms are collected. The heavy-weight materials (the fifth intermediate mixture) passing through the primary air separation device 114 enter the secondary air separation device 113 for further air separation. The light-weight electrode sheets (the second intermediate electrode sheet materials), copper foils, and aluminum foils (part of the fifth intermediate mixture and the sixth intermediate mixture) fall into the first sorting device 117 (the first sorting device 117 corresponds to an electrostatic sorting or eddy current device) through the secondary cyclone 112 to further separate the doped diaphragms. The remaining electrode sheets (the third intermediate electrode sheet materials) enter the next-level device. The heavy objects (the seventh intermediate mixture) passing through the secondary air separation device 113 fall into the second magnetic separation device 115 to separate the magnetic substances from the non-magnetic substances. Then the non-magnetic substances pass through the second sorting device 146 (which can be an AI sorter) to separate the doped copper blocks and aluminum blocks (copper-aluminum mixture) and further sort out the large copper and aluminum to improve the economy of recycling.The pole pieces (the third intermediate pole piece material) separated from the first sorting device 117 by electrostatic sorting or the eddy current device pass through the first magnetic separation device to further remove the magnetic substances inside, which can effectively protect the service life of the hammer crusher 118. In addition, the pole pieces (the first intermediate pole piece material) pass through the hammer crusher 118 to further solve the problem of material coating and improve the recovery rate. Through negative pressure suction, the materials after being hammered pass through the primary separation device 119 (cyclone separation). The heavy materials (the eighth intermediate mixture) fall into the secondary separation device 121 (which can be a screening machine). The black substances with small particle sizes (the third black powder) enter the material collection system. The large materials (the ninth intermediate mixture) enter the mill 122. The light dust (the first dust) coming out of the cyclone of the primary separation device passes through the bag filter 120 for filtration. The black materials enter the material collection system. After passing through the mill 122, the large-diameter materials (the ninth intermediate material) are granulated by the mill 122. These materials are sucked in through negative pressure and drawn into the tertiary separation device 124 (cyclone separation). The heavy materials (the tenth intermediate mixture) are discharged from the cyclone discharge port of the tertiary separation device 124. The light black dust materials (the second dust) pass through the upper discharge port of the cyclone of the tertiary separation device 124 and enter the material collection system after passing through the bag filter 120 for filtration. The heavy materials (the tenth intermediate mixture) coming out of the cyclone of the tertiary separation device 124 enter the quaternary separation device 128 (screening device). The quaternary separation device 128 has three outlets: the first separation outlet, the second separation outlet, and the third separation outlet. The materials with the largest particles (the eleventh intermediate mixture) return to the mill 122 for refeeding from the upper screening port (the first separation outlet). The materials with medium particles (the twelfth intermediate mixture) enter the fifth separation device 129 (screening device). The materials with the smallest particles (part of the fourth black powder) enter the black powder collection system. The materials entering the fifth separation device 129 for screening are screened again. The materials with the largest particles pass through the specific gravity separation device 126 to screen out the small diaphragms again. The materials with medium particles enter the specific gravity separator 127 to separate copper and aluminum. The materials with the smallest particles (part of the fourth black powder) enter the material collection system. Through the material collection system, the smallest black substances coming out of the first screening device 105, the second screening device 108, the bag filter 131, the secondary separation device 121, the quaternary separation device 128, and the fifth separation device 129 in the entire production line are sucked into the dust removal device 131 in the form of negative pressure suction, and then (the first separation product) falls into the silo 130. The smaller dust (the second separation product) passes through the spraying device 132 and is finally discharged qualified through the first chimney 133.

[0135] It should be noted that the conveying equipment in this application can be selected in various ways such as belts, scrapers, bucket elevators, and screws. The screening equipment can be various screening structures such as swing screens, linear screens, and circular vibrating screens.

[0136] Embodiment 3 of the present invention provides a battery recycling device. The difference between the recycling device in this embodiment and the battery recycling device in Embodiment 2 is that: the primary separation device 119 and the bag filter 120 are not provided in the recycling device in this embodiment. The hammer crusher 118 in the recycling device in this embodiment is directly connected to the secondary separation device 121. In this way, the separation effect of the material can also be effectively guaranteed.

[0137] Embodiment 4 of the present invention provides a battery recycling device. The difference between the recycling device in this embodiment and the battery recycling device in Embodiment 2 is the installation position of the first sorting device 117. The first sorting device 117 in this embodiment is arranged between the hammer crusher 118 and the secondary separation device 121. In this way, the separation effect of the material can also be effectively guaranteed.

[0138] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: by adding the method of hammer crushing and dispersing during the deflaking process, the occurrence of the situation of material coating can be effectively solved; by adding electrostatic sorting or specific gravity sorting after air separation, the diaphragm that is difficult to remove can be removed, making the subsequent processes smoother. By using a TO furnace for combustion, rapid cooling, bag dust removal, primary water washing, secondary and tertiary alkali washing for fluoride removal, and then passing through a denitrification device for nitrogen oxide removal, and finally discharging up to standard.

[0139] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0140] Unless otherwise specifically stated, the relative arrangements of the components and steps described in these embodiments, numerical expressions, and numerical values do not limit the scope of the present application. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0141] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0142] For convenience of description, spatial relative terms such as "above", "over", "on the upper surface", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations should be made for the spatial relative descriptions used here.

[0143] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present application.

[0144] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A battery recycling method, characterized in that, Including: Crushing the battery, and subjecting the crushed battery to a heating and volatilization treatment to obtain a gaseous mixture and a solid mixture; Separating the solid mixture to obtain a separator, electrode sheets, black powder, copper particles, and aluminum particles respectively; During the separation of the solid mixture, performing a dispersing operation on the solid mixture and / or an intermediate mixture obtained after separating the solid mixture.

2. The battery recycling method according to claim 1, wherein The performing a dispersing operation on the solid mixture and / or the intermediate mixture obtained after separating the solid mixture includes: Performing a vibration dispersion and / or an impact dispersion on the solid mixture and / or the intermediate mixture obtained after separating the solid mixture.

3. The battery recycling method according to claim 1, characterized in that The intermediate mixture includes a first intermediate mixture; the separating the solid mixture includes: Screening the solid mixture to obtain first black powder and a first intermediate mixture respectively, the particles of the first intermediate mixture being larger than those of the first black powder; Dispersing the first intermediate mixture to obtain a second intermediate mixture and a third intermediate mixture respectively, the particles of the third intermediate mixture being larger than those of the second intermediate mixture.

4. The battery recycling method according to claim 3, wherein After dispersing the first intermediate mixture, the battery recycling method further includes: Screening the second intermediate mixture to obtain second black powder and a fourth intermediate mixture respectively, the particles of the fourth intermediate mixture being larger than those of the second black powder; Mixing the fourth intermediate mixture and the third intermediate mixture and then separating them, and performing a hammer crushing dispersion during the separation after mixing the fourth intermediate mixture and the third intermediate mixture.

5. The battery recycling method according to claim 4, characterized in that, The performing a hammer crushing dispersion during the separation after mixing the fourth intermediate mixture and the third intermediate mixture includes: Mixing the fourth intermediate mixture and the third intermediate mixture and then separating them to obtain a first intermediate electrode sheet material; Performing a hammer crushing dispersion on the first intermediate electrode sheet material and then separating it.

6. The battery recycling method according to claim 5, wherein The mixing the fourth intermediate mixture and the third intermediate mixture and then separating them to obtain a first intermediate electrode sheet material includes: Performing a primary air separation on the fourth intermediate mixture and the third intermediate mixture to obtain a separator mixture and a fifth intermediate mixture respectively; Screening the separator mixture to obtain a second intermediate electrode sheet material and a separator, and collecting the separator; Performing a secondary air separation on the second intermediate electrode sheet material and the fifth intermediate mixture to obtain a sixth intermediate mixture and a seventh intermediate mixture, the particles of the seventh intermediate mixture being larger than those of the sixth intermediate mixture; Screening the sixth intermediate mixture to obtain the first intermediate electrode sheet material.

7. The battery recycling method according to claim 6, wherein, The screening the sixth intermediate mixture to obtain the first intermediate electrode sheet material includes: Performing an electrostatic separation or an eddy current separation on the sixth intermediate mixture to obtain a third intermediate electrode sheet material and a separator, and collecting the separator; Performing a magnetic separation on the third intermediate electrode sheet material to remove magnetic substances and obtain the first intermediate electrode sheet material.

8. The battery recycling method according to claim 6, wherein The battery recycling method further includes: Performing magnetic separation on the seventh intermediate mixture to remove magnetic substances and obtain a copper-aluminum mixture; Sorting the copper-aluminum mixture to obtain copper particles and aluminum particles respectively.

9. The battery recycling method according to claim 5, wherein The hammer-breaking and separating of the first intermediate electrode sheet material includes: Hammer-breaking and dispersing the first intermediate electrode sheet material, and performing first-stage separation on the hammer-broken and dispersed first intermediate electrode sheet material to obtain an eighth intermediate mixture and dust, where the particles of the eighth intermediate mixture are larger than those of the dust; Performing second-stage separation on the eighth intermediate mixture to obtain third black powder and a ninth intermediate mixture respectively, where the particles of the ninth intermediate mixture are larger than those of the third black powder; Polishing and granulating the ninth intermediate mixture, and performing third-stage separation on the polished and granulated ninth intermediate mixture to obtain a tenth intermediate mixture and second dust respectively, where the particles of the tenth intermediate mixture are larger than those of the second dust; Performing fourth-stage separation on the tenth intermediate mixture to obtain fourth black powder, separator, copper particles and aluminum particles respectively.

10. The battery recycling method according to claim 9, wherein The four-stage separation of the tenth intermediate mixture includes: Sieving the tenth intermediate mixture to obtain an eleventh intermediate mixture, a twelfth intermediate mixture and part of the fourth black powder respectively, where the particles of the eleventh intermediate mixture are larger than those of the twelfth intermediate mixture; Polishing and granulating the eleventh intermediate mixture, and performing the fourth-stage separation on the polished and granulated eleventh intermediate mixture again; Performing fifth-stage separation on the twelfth intermediate mixture to obtain part of the fourth black powder and a thirteenth intermediate mixture respectively, where the particles of the thirteenth intermediate mixture are larger than those of the fourth black powder; Performing specific gravity separation on the thirteenth intermediate mixture to obtain separator, copper particles and aluminum particles respectively.

11. The battery recycling method according to any one of claims 1 to 10, characterized in that, The battery recycling method further includes: Performing high-temperature combustion on the gaseous mixed material to obtain combustion gas, and cooling and alkali-washing the combustion gas; or, Performing at least two-stage condensation separation on the gaseous mixed material, and cooling and alkali-washing the tail gas after condensation separation.

12. The battery recycling method according to any one of claims 1 to 10, characterized in that, The battery recycling method further includes: The heating temperature for the heating and volatilization treatment of the crushed battery is T, where T ≤ 200°C; and / or, Collecting the black powder by negative pressure suction, and separating the collected black powder to obtain a first separation product and a second separation product, where the particles of the first separation product are larger than those of the second separation product, collecting the first separation product, and discharging the second separation product after spraying.

13. A battery recycling device, characterized in that, It includes: A crushing device for crushing the battery; A heating and volatilization device, the inlet of which is connected to the outlet of the crushing device, and the heating and volatilization device is used for heating and volatilization treatment of the crushed battery to obtain a gaseous mixed material and a solid mixed material; A separation device, the inlet of which is connected to the outlet of the heating and volatilization device, and the separation device is used for separating the solid mixed material; A disintegration device, which is used to perform a disintegration operation on the solid mixed material and / or the intermediate mixture obtained after the separation of the solid mixed material. The disintegration device includes a vibration disintegrator and / or a hammer crusher.

14. The battery recycling device according to claim 13, wherein, The separation device includes: a first screening device that screens the solid mixed material to respectively obtain a first black powder and a first intermediate mixture, and the particles of the first intermediate mixture are larger than those of the first black powder; The disintegration device includes a vibration disintegrator that disintegrates the first intermediate mixture to respectively obtain a second intermediate mixture and a third intermediate mixture, and the particles of the third intermediate mixture are larger than those of the second intermediate mixture.

15. The battery recycling device according to claim 14, wherein The separation device further includes: A second screening device that screens the second intermediate mixture to respectively obtain a second black powder and a fourth intermediate mixture, and the particles of the fourth intermediate mixture are larger than those of the second black powder; A first separation component that mixes and then separates the fourth intermediate mixture and the third intermediate mixture; The battery recycling device further includes a hammer crusher that performs hammer crushing and disintegration during the process of mixing and separating the fourth intermediate mixture and the third intermediate mixture.

16. The battery recycling device according to claim 13, characterized in that, The battery recycling device further includes: A combustion furnace and an alkali washing device. The feed inlet of the combustion furnace is communicated with the gas outlet of the heating and volatilization device to introduce the gaseous mixed material. The combustion furnace performs high-temperature combustion on the gaseous mixed material to obtain the combusted gas, and the alkali washing device cools and alkali washes the combusted gas; or, A condensation device and an alkali washing device. The feed inlet of the condensation device is communicated with the gas outlet of the heating and volatilization device to introduce the gaseous mixed material. The condensation device performs condensation separation on the gaseous mixed material. The feed inlet of the alkali washing device is communicated with the tail gas outlet of the condensation device to alkali wash the tail gas after the condensation separation by the condensation device.

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