CN114950644A

CN114950644A - Hard carbon material particle separation device and method

Info

Publication number: CN114950644A
Application number: CN202210572636.8A
Authority: CN
Inventors: 魏春光; 吴晋; 梁燕
Original assignee: Shenzhen Cubic Science Co ltd
Current assignee: Shenzhen Cubic Science Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-08-30

Abstract

The invention discloses a hard carbon material particle separation device and a hard carbon material particle separation method, wherein the device comprises a discharging device, the top of the discharging device is provided with an opening, and the opening is connected with a hard carbon material outlet of a rotary furnace; the bottom of the discharger is provided with a discharge port, and the discharge port is provided with a grid net; the air channel is arranged at the lower end of the grid net and at least comprises a shell and a fan arranged in the shell; the air duct is provided with a first outlet, the first outlet is provided with a recovery bag, and the blowing direction of the fan is vertical to the aperture direction of the grid net; the conveying mechanism is arranged below the air duct, and a plurality of groups of material separating baffles are arranged between the conveying mechanism and the air duct. Can realize tentatively smashing the stirring with the hard carbon material of sintering, through the screening in grid network and wind channel, can take place the removal of transverse position when being exerted transverse force according to the granule, the distance that the granule that the particle size is big removed is little, realizes that the granule that forms different particle sizes on transport mechanism piles up the strip, has directly reached the material collection of different granules.

Description

Hard carbon material particle separation device and method

Technical Field

The invention relates to the field of cathode materials and preparation methods thereof, in particular to a particle separation device and method for a hard carbon material.

Background

In the prior art, a lithium ion capacitor is used as a new energy storage element, and compared with a traditional double-electric-layer capacitor, the lithium ion capacitor not only keeps the characteristics of high power and long service life of a super capacitor, but also greatly improves the energy density of the super capacitor compared with the double-electric-layer capacitor. The lithium ion capacitor negative electrode material is similar to the negative electrode material of the lithium ion battery, has the capability of inserting/extracting lithium ions, and simultaneously has long cycle life and durability life. Generally used as negative electrode materials for lithium ion capacitors are amorphous carbon materials such as hard carbon and soft carbon, and graphite-based materials such as highly isotropic artificial graphite, composite graphite, and mesocarbon microbeads. The hard carbon material has the characteristics of good rapid charge and discharge characteristics, long service life and the like, and is a preferred negative electrode material of the lithium ion capacitor.

However, in comparison with the charging requirement that the lithium ion battery usually does not exceed 10C rate, the lithium ion capacitor usually requires charging and discharging with an extra-large rate of 100C or more, which puts higher performance requirements on the negative electrode material than the lithium ion battery. The research of lithium ion capacitors is focused on a negative electrode material with ultrahigh multiplying power charge and discharge, long service life and high durability.

One prior art method reduces the overall particle size of the negative electrode material by reducing the particle size of the hard carbon material. A hard carbon material with small particle size and high specific surface area as prepared in patent document CN 201380044862. However, the hard carbon material is often prepared by sintering treatment, and how to achieve the grain size differentiation of the sintered hard carbon material is still a great difficulty for those skilled in the art.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

In order to satisfy the above requirements, a first object of the present invention is to provide a particle separating apparatus for hard carbon materials.

A second object of the present invention is to provide a method for separating particles of a hard carbon material.

In order to achieve the purpose, the invention adopts the following technical scheme:

in one aspect, the present application provides a particle separating apparatus of hard carbon material, comprising:

the top of the discharging device is provided with an opening, and the opening is connected with a hard carbon material outlet of the rotary furnace; the bottom of the discharger is provided with a discharge port, and the discharge port is provided with a grid net;

the air channel is arranged at the lower end of the grid net and at least comprises a shell and a fan arranged in the shell; the air duct is provided with a first outlet, the first outlet is provided with a recovery bag, and the blowing direction of the fan is vertical to the aperture direction of the grid net;

the conveying mechanism is arranged below the air duct, and a plurality of groups of material separating baffles are arranged between the conveying mechanism and the air duct.

In one embodiment, a crushing stirrer is arranged inside the discharging device.

In one embodiment, the end of the conveying mechanism is connected with at least one collector, and the collector corresponds to a material distribution channel formed by a first group of material distribution baffles close to the rotor.

In one embodiment, the end of the conveying mechanism is further connected with a recycling channel.

In an embodiment, the recycling channel is connected to the recycling bag.

In one embodiment, the transmission mechanism includes a driving wheel, a driven wheel and a transmission belt, and the air duct is disposed corresponding to the transmission belt.

In one embodiment, the sets of material baffles form lanes of material on the transport mechanism.

In one embodiment, the opening is connected to the retrieval bag.

In one embodiment, a vibrator is connected to the grid mesh.

In another aspect, the present application provides a method for separating particles of hard carbon material, based on the apparatus of any one of the above embodiments, comprising the steps of:

injecting hard carbon materials subjected to sintering treatment by a rotary furnace into a discharging device, and starting a crushing stirrer in the discharging device to enable the hard carbon materials to fall into an air duct through a grid net after being crushed;

enabling the fan to rotate at a preset speed according to the particle size of particles to be separated, and enabling the air duct to generate airflow facing the first opening;

keeping the distance between the first group of material distribution baffles and the first opening in the direction from the fan to the first opening, and re-injecting the hard carbon materials corresponding to the collection distance into the discharging device;

hard carbon particles with different particle size ranges collected by a collector corresponding to a material distribution channel formed by a plurality of groups of powder baffles are obtained.

Compared with the prior art, the invention has the beneficial effects that: by adopting the device and the method, the hard carbon material which is preliminarily sintered can be crushed and stirred, the movement of the transverse position can be generated when the transverse acting force is applied to the particles according to the screening of the grid net and the air channel, the distance for moving the particles with large particle sizes is small, the particles with different particle sizes can be formed on the conveying mechanism, and the material collection of different particles is directly realized. And the recycling bag is used for preventing dust particles from polluting the environment and carrying out recycling treatment.

The invention is further described below with reference to the figures and the specific embodiments.

Drawings

FIG. 1 is a schematic view showing the construction of a particle separating apparatus for hard carbon material according to the present invention;

FIG. 2 is a schematic view of the apparatus of FIG. 1;

fig. 3 is a schematic flow diagram of a method for particle separation of a hard carbon material according to the present invention.

Reference numerals

101 tap 102 opening

103 discharge port 104 grid mesh

105 duct 106 fan

107 first outlet 108 recovery bag

109 transport mechanism 110 divides material baffle

111 divide material passageway 112 to retrieve passageway

1091 Driving wheel 1092 driven wheel

1093 and a conveyor belt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be connected or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

As shown in fig. 1-2, the present application provides a hard carbon material particle separating device, which comprises a discharging device 101, wherein the top of the discharging device 101 is provided with an opening 102, and the opening 102 is connected with a hard carbon material outlet of a rotary furnace; a discharge port 103 is formed in the bottom of the discharger 101, and a grid mesh 104 is arranged at the discharge port 103; an air duct 105, the air duct 105 is disposed at the lower end of the grid mesh 104, the air duct 105 at least includes a housing, and a fan 106 disposed in the housing; the air duct 105 is provided with a first outlet 107, the first outlet 107 is provided with a recovery bag 108, and the opening 102 may be further connected with the recovery bag 108 to facilitate injection of new hard carbon material. The blowing direction of the fan 106 is perpendicular to the aperture direction of the grid mesh 104; as can be seen in fig. 2, when the hard carbon material a falls from the grid mesh 104, it falls into the air duct 105 and is applied with a lateral force by the fan 106, thereby achieving an offset to the ground. The conveying mechanism 109 is arranged below the air duct 105, a plurality of groups of material separating baffles 110 are arranged between the conveying mechanism 109 and the air duct 106, and when the force is applied by the fan, the particles are naturally separated by the material separating baffles 110, so that a plurality of materials with different particle sizes are formed on the surface of the conveying mechanism 109 for collection.

In one embodiment, the discharging device 101 is provided with a pulverizing stirrer inside, wherein the pulverizing stirrer can perform a fine treatment on the sintered hard carbon material.

In one embodiment, at least one collector is connected to the end of the conveying mechanism 109, the collector corresponds to the material separating channel 111 formed by the first group of material separating baffles close to the rotor, and the end of the conveying mechanism 109 is further connected with the recycling channel 112, specifically, when the particles are blown far enough, it is impossible to judge whether the particle size of the particles meets the standard, and recycling is needed for further processing, so the recycling channel 112 is connected with the recycling bag 108.

In one embodiment, the transmission mechanism 109 includes a driving wheel 1091, a driven wheel 1092 and a transmission belt 1093, and the air duct 105 is disposed corresponding to the transmission belt 1093. The capstan 1091 is further connected to a driving motor to rotate.

In one embodiment, the grid mesh 104 is connected to a vibrator to effect the material falling into the duct 105 during vibration to effect screening.

In another aspect, as shown in fig. 3, the present application proposes a method for separating particles of a hard carbon material, based on the apparatus of any one of the preceding claims, comprising the steps of:

s101, injecting hard carbon materials subjected to sintering treatment of a rotary furnace into a discharging device, and starting a crushing stirrer in the discharging device to enable the hard carbon materials to fall into an air duct through a grid net after being crushed;

s102, enabling a fan to rotate at a preset speed according to the particle size of particles to be separated as required, and enabling an air duct to generate airflow facing a first opening;

s103, enabling the first group of distribution baffles to keep a distance in the direction from the fan to the first opening, and re-injecting the hard carbon materials corresponding to the collected distance into the discharging device;

and S104, obtaining hard carbon particles with different particle size ranges, which are collected by collectors corresponding to a material distribution channel formed by a plurality of groups of powder baffles.

In the embodiments provided in the present invention, it should be understood that the disclosed modules may be implemented in other manners. For example, the above-described module embodiments are merely illustrative. For example, the division of each module is only one logic function division, and there may be another division manner in actual implementation. For example, more than one module or component may be combined or may be integrated into another system, or some features may be omitted, or not implemented.

The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims

1. An apparatus for separating particles of hard carbon material, comprising:

2. The apparatus of claim 1, wherein a comminuting agitator is disposed within the tap.

3. The apparatus of claim 1 wherein at least one collector is attached to the end of the transport mechanism, the collector corresponding to the feed channel defined by the first set of feed baffles adjacent the rotor.

4. The apparatus of claim 3, wherein a recycling channel is further connected to the end of the transport mechanism.

5. The device of claim 4, wherein the retrieval channel is connected to the retrieval bag.

6. The apparatus of claim 4, wherein the conveying mechanism comprises a driving wheel, a driven wheel and a conveying belt, and the air duct is disposed corresponding to the conveying belt.

7. The apparatus of claim 1 wherein said plurality of sets of material distribution baffles form a plurality of lanes of material on the transport mechanism.

8. The device of claim 1, wherein the opening connects to the retrieval bag.

9. The apparatus of claim 1, wherein a vibrator is connected to the grid mesh.

10. A method for particle separation of hard carbon material, characterized in that it is based on the device according to any one of claims 1-9, comprising the following steps:

enabling the fan to rotate at a preset speed according to the particle size to be separated, and enabling the air duct to generate airflow facing the first opening;