CN109932286B - Method for testing graphite particle size distribution - Google Patents
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- CN109932286B CN109932286B CN201711351874.1A CN201711351874A CN109932286B CN 109932286 B CN109932286 B CN 109932286B CN 201711351874 A CN201711351874 A CN 201711351874A CN 109932286 B CN109932286 B CN 109932286B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a method for testing graphite particle size distribution, which comprises the following steps of (1) preparing a light and small graphite particle size testing machine, and directly moving the machine to a production field for operation. (2) And collecting the graphite material into a graphite granularity testing machine by utilizing an adsorption device. (3) Ultrasonic vibration device sends the ultrasonic wave, disperses the graphite material of reunion, and the great graphite of particle diameter is stayed the one-level and is sieved weighing device, and the less graphite of particle diameter drops to the second grade weighing device that sieves, and the graphite that the particle diameter is minimum drops to the tertiary weighing device that sieves to go out the granule of different particle diameters in grades. (4) And weighing respective graphite materials after grading is completed to obtain the powder content within each particle size range, finally calculating the content within each particle size range through an intelligent control center, intelligently displaying the particle size distribution condition, reducing the operation steps and having high practicability.
Description
Technical Field
The invention relates to the technical field of lithium ion battery material treatment, in particular to a method for testing graphite particle size distribution.
Background
During the production or modification of graphite, it is often necessary to sieve and weigh the graphite powder and to calculate the contents in the different particle size ranges. The prior art often uses a laser particle size distribution instrument to monitor the particle size distribution of graphite particles, and the principle is that in the propagation of light, wave front is limited by gaps or particles which are equivalent to the wavelength scale, the emission which takes each elementary wave at the limited wave front as a source is interfered in space to generate diffraction and scattering, and the spatial (angular) distribution of the diffracted and scattered light energy is related to the wavelength of the light wave and the size of the gaps or particles. When laser is used as a light source and the light is monochromatic light with a certain wavelength, the spatial (angular) distribution of diffracted and scattered light energy is only related to the particle size. For the diffraction of the particle group, the size of each particle grade determines the light energy obtained at each specific angle, and the proportion of the light energy at each specific angle in the total light energy reflects the distribution abundance of each particle grade. Because it adopts laser equipment, the test cost is higher relatively, and need dispose solution complex operation, can't sieve on-the-spot test, and can't realize automatic weighing, and the workman weighs easily causes material pollution and consuming time hard.
Disclosure of Invention
In view of the above, the present invention is directed to the defects existing in the prior art, and the main object of the present invention is to provide a method for testing graphite particle size distribution, which can be operated in a production field, has high adsorption type charging efficiency, automatically weighs after screening, intelligently displays the particle size distribution, reduces the operation steps, and has high practicability.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of testing the particle size distribution of graphite comprising the steps of:
step (1), at least a first-stage sieving weighing device, a second-stage sieving weighing device and a third-stage sieving weighing device are arranged on a graphite particle size testing machine, so that the aperture of the first-stage sieving weighing device, the aperture of the second-stage sieving weighing device and the aperture of the third-stage sieving weighing device are sequentially reduced and are all connected to an intelligent control center; arranging an adsorption device at the top of the graphite granularity testing machine, and arranging an ultrasonic vibration device at the bottom of the graphite granularity testing machine;
collecting the graphite material to a graphite particle size testing machine by using an adsorption device, and automatically dropping the graphite material to a primary sieving and weighing device due to gravity;
step (3), the ultrasonic vibration device sends out ultrasonic waves to vibrate the interior of the graphite particle size testing machine, agglomerated graphite materials are dispersed, graphite with larger particle sizes is left on the first-stage sieving weighing device, graphite with smaller particle sizes falls to the second-stage sieving weighing device, and graphite with the smallest particle sizes falls to the third-stage sieving weighing device from the second-stage sieving weighing device, so that particles with different particle sizes are classified;
and (4) after grading is completed, weighing respective graphite materials by using a first-stage sieving weighing device, a second-stage sieving weighing device and a third-stage sieving weighing device respectively to obtain the powder content in each particle size range, and finally calculating the content in each particle size range through an intelligent control center and visually displaying the content through a screen.
As a preferred scheme, the intelligent control center is arranged on the graphite particle size testing machine and consists of an intelligent control panel with a chip and a touch control display screen connected to the intelligent control panel.
Preferably, the lowest part of the graphite particle size testing machine is provided with a blower.
As a preferred scheme, the first-stage sieving weighing device, the second-stage sieving weighing device and the third-stage sieving weighing device can be detachably assembled on the graphite granularity testing machine.
As a preferred scheme, the first-stage sieving weighing device, the second-stage sieving weighing device, the third-stage sieving weighing device and the graphite granularity testing machine are in snap-in assembly connection.
Preferably, the suction device has a suction nozzle, and a soft suction pipe is connected to the suction nozzle.
As a preferred scheme, the first-stage sieving weighing device, the second-stage sieving weighing device and the third-stage sieving weighing device respectively comprise a screen with dense micropores, the screen is formed by compounding an insulating plastic layer and a magnetic absorption layer covering the surface of the insulating plastic layer, and the magnetic absorption layer is used for absorbing metal impurities in graphite particles so as to remove impurities.
As a preferable scheme, the periphery of the cylinder of the graphite particle size testing machine is coated with magnetic absorption layers, and metal impurities in graphite particles are absorbed by the magnetic absorption layers, so that impurities are removed.
As a preferred scheme, spiral blanking devices are arranged between the first-stage sieving weighing device and the second-stage sieving weighing device and between the second-stage sieving weighing device and the third-stage sieving weighing device, a magnetic absorption layer covers the spiral blanking devices, and metal impurities in graphite particles are absorbed by the magnetic absorption layer, so that impurities are removed.
Compared with the prior art, the method has obvious advantages and beneficial effects, and concretely, the method comprises the following steps of (1) preparing a light and small graphite granularity testing machine, and directly moving the machine to a production field for operation. (2) And collecting the graphite material into a graphite granularity testing machine by utilizing an adsorption device. (3) Ultrasonic vibration device sends the ultrasonic wave, disperses the graphite material of reunion, and the great graphite of particle diameter is stayed one-level and is sieved weighing device, and the less graphite of particle diameter drops to second grade and sieves weighing device, and the graphite that the particle diameter is minimum drops to tertiary weighing device that sieves to go out the granule of different particle diameters in grades. (4) And weighing respective graphite materials after grading is completed to obtain the powder content within each particle size range, finally calculating the content within each particle size range through an intelligent control center, intelligently displaying the particle size distribution condition, reducing the operation steps and having high practicability.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic view of a graphite grain size tester according to an embodiment of the present invention.
The attached drawings indicate the following:
10. a graphite particle size tester; 11. first-level sieving weighing device
12. A second-stage sieving weighing device; 13. three-stage sieving weighing device
14. An intelligent control center; 15. adsorption device
151. A suction nozzle; 152. flexible suction tube
16. An ultrasonic vibration device; 17. a blower.
Detailed Description
The invention discloses a method for testing the graphite particle size distribution, the testing process is completed by a graphite particle size testing machine 10 shown in figure 1, at least a first-stage sieving weighing device 11, a second-stage sieving weighing device 12 and a third-stage sieving weighing device 13 are arranged on the graphite particle size testing machine 10, so that the aperture of the first-stage sieving weighing device 11, the aperture of the second-stage sieving weighing device 12 and the aperture of the third-stage sieving weighing device 13 are sequentially reduced and are all connected to an intelligent control center 14. The top of the graphite grain size testing machine 10 is provided with an adsorption device 15, the adsorption device 15 is provided with a suction nozzle 151, and the suction nozzle 151 is connected with a soft suction pipe 152. An ultrasonic vibration device 16 is disposed at the bottom of the graphite particle size testing machine 10 for generating vibration to disperse the material. The intelligent control center 14 is disposed on the graphite particle size testing machine 10, and is composed of an intelligent control panel with a chip and a touch display screen connected to the intelligent control panel. The first-stage sieving weighing device 11, the second-stage sieving weighing device 12 and the third-stage sieving weighing device 13 are detachably assembled on the graphite particle size testing machine 10, and for example, a snap-fit assembly connection can be adopted. The lowest part of the graphite particle size testing machine 10 is provided with an air blower 17. The graphite granularity tester 10 has the characteristics of low cost, simple structure, small size, easy maintenance, convenient operation and the like.
The method for testing the particle size distribution of the graphite comprises the following steps:
step (1), preparing a graphite particle size tester 10, wherein the graphite particle size tester 10 is light in weight, small in size and capable of being directly moved to a production site for operation.
And (2) collecting the graphite material to a graphite particle size testing machine 10 by using an adsorption device 15, and automatically dropping the graphite material to a first-stage sieving weighing device 11 due to gravity.
And (3) sending ultrasonic waves by the ultrasonic vibration device 16 to vibrate the interior of the graphite particle size testing machine 10, dispersing agglomerated graphite materials, leaving the graphite with larger particle size on the first-stage sieving weighing device 11, dropping the graphite with smaller particle size to the second-stage sieving weighing device 12, and dropping the graphite with the smallest particle size from the second-stage sieving weighing device 12 to the third-stage sieving weighing device 13 so as to classify particles with different particle sizes.
And (4) after grading is completed, weighing respective graphite materials by using a first-stage sieving weighing device 11, a second-stage sieving weighing device 12 and a third-stage sieving weighing device 13 respectively to obtain the powder content of each particle size range, and finally calculating the content of each particle size range through an intelligent control center 14 and visually displaying the content through a screen.
Through above 4 steps, the graphite material is inhaled automatically, sieves the granule of different grades automatically, and automatic weighing after the screening, the intelligent display granularity distribution condition reduces the operating procedure, and the practicality is high.
In addition, the first-stage sieving weighing device 11, the second-stage sieving weighing device 12 and the third-stage sieving weighing device 13 all comprise a screen with dense micropores, the screen is formed by compounding an insulating plastic layer and a magnetic absorption layer covering the surface of the insulating plastic layer, and the magnetic absorption layer is used for absorbing metal impurities in graphite particles so as to remove impurities. And the periphery of the cylinder of the graphite particle size testing machine 10 is coated with magnetic absorption layers, and metal impurities in the graphite particles are absorbed by the magnetic absorption layers, so that the impurities are removed. Further, spiral discharging devices are arranged between the first-stage sieving weighing device 11 and the second-stage sieving weighing device 12 and between the second-stage sieving weighing device 12 and the third-stage sieving weighing device 13, magnetic absorption layers cover the spiral discharging devices, and metal impurities in graphite particles are absorbed by the magnetic absorption layers, so that impurities are removed. Through the three-time impurity removal, impurities in graphite materials on a production line can be completely removed, and the purity of graphite particles is improved.
In summary, the design of the present invention is characterized in that the adsorption device 15 is used to collect the powder material into the device, the ultrasonic vibration device 16 is used to disperse the agglomerated material so as to filter and classify the particles with different particle sizes, the intelligent weighing devices 11, 12, 13 are used to obtain the powder content in each particle size range, and finally the intelligent touch panel with a chip is used to calculate and display the powder content in each particle size range on the screen.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (6)
1. A method for testing the particle size distribution of graphite is characterized in that: comprises the following steps
Step (1), at least a first-stage sieving weighing device, a second-stage sieving weighing device and a third-stage sieving weighing device are arranged on a graphite particle size testing machine, so that the aperture of the first-stage sieving weighing device, the aperture of the second-stage sieving weighing device and the aperture of the third-stage sieving weighing device are sequentially reduced and are all connected to an intelligent control center; arranging an adsorption device at the top of the graphite particle size testing machine, and arranging an ultrasonic vibration device at the bottom of the graphite particle size testing machine; the first-stage sieving weighing device, the second-stage sieving weighing device and the third-stage sieving weighing device comprise screens with dense micropores; the screen is formed by compounding an insulating plastic layer and a magnetic absorption layer covering the surface of the insulating plastic layer, and metal impurities in graphite particles are absorbed by the magnetic absorption layer so as to remove the impurities;
collecting the graphite material to a graphite particle size testing machine by using an adsorption device, wherein the graphite material automatically falls to a primary sieving weighing device due to gravity; the periphery of a cylinder of the graphite particle size testing machine is coated with magnetic absorption layers, and metal impurities in graphite particles are absorbed by the magnetic absorption layers so as to remove the impurities;
step (3), the ultrasonic vibration device sends out ultrasonic waves to enable the interior of the graphite particle size testing machine to vibrate, agglomerated graphite materials are dispersed, graphite with larger particle sizes is left on the first-stage sieving weighing device, graphite with smaller particle sizes falls to the second-stage sieving weighing device, and graphite with the smallest particle sizes falls to the third-stage sieving weighing device from the second-stage sieving weighing device, so that particles with different particle sizes are classified; spiral discharging devices are arranged between the first-stage sieving weighing device and the second-stage sieving weighing device and between the second-stage sieving weighing device and the third-stage sieving weighing device; the spiral feeding device is covered with a magnetic absorption layer, and metal impurities in graphite particles are absorbed by the magnetic absorption layer so as to remove the impurities; completely removing impurities in the graphite materials on the production line by removing impurities for three times;
and (4) after grading is completed, weighing respective graphite materials by using a first-stage sieving weighing device, a second-stage sieving weighing device and a third-stage sieving weighing device respectively to obtain the powder content in each particle size range, and finally calculating the content in each particle size range through an intelligent control center and visually displaying the content through a screen.
2. The method for testing the particle size distribution of graphite according to claim 1, wherein: the intelligent control center is arranged on the graphite particle size testing machine and consists of an intelligent control panel with a chip and a touch control display screen connected to the intelligent control panel.
3. The method for testing the particle size distribution of graphite according to claim 1, wherein: and the lowest part of the graphite granularity testing machine is provided with an air blower.
4. The method for testing the particle size distribution of graphite according to claim 1, wherein: the first-stage sieving weighing device, the second-stage sieving weighing device and the third-stage sieving weighing device can be assembled in the graphite granularity testing machine in a detachable mode.
5. The method for testing the particle size distribution of graphite according to claim 4, wherein: the first-stage sieving weighing device, the second-stage sieving weighing device, the third-stage sieving weighing device and the graphite particle size testing machine are connected in a buckling mode in an assembling mode.
6. The method for testing the particle size distribution of graphite according to claim 1, wherein: the adsorption device is provided with a suction nozzle which is connected with a soft suction pipe.
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| CN110220577B (en) * | 2019-06-27 | 2020-04-14 | 海南中橡科技有限公司 | Automatic weighing device for granular natural rubber |
| CN113814027A (en) * | 2021-09-30 | 2021-12-21 | 北京大学 | Rock crushing system |
| CN114659946B (en) * | 2022-03-18 | 2023-06-09 | 广东凯金新能源科技股份有限公司 | Automatic detection system for graphite granularity detection and application method thereof |
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