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Superfine artificial graphite powder and preparation method thereof

A technology of artificial graphite powder and graphene quantum dots, applied in graphite, grain processing, etc., can solve problems such as poor product performance, impact, and unfavorable applications, and achieve strong practical application capabilities, good effects, and the effect of preventing agglomeration

Inactive Publication Date: 2018-01-26
HUNAN GUOSHENG GRAPHITE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because it is difficult to completely remove, the use and residue of these dispersants often have a negative impact on the performance of the corresponding product, which is not conducive to practical application

Method used

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  • Superfine artificial graphite powder and preparation method thereof
  • Superfine artificial graphite powder and preparation method thereof
  • Superfine artificial graphite powder and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] This embodiment provides a method for preparing ultrafine artificial graphite powder, using artificial graphite powder as raw material, first configuring a slurry with a slurry concentration of 10%, and then adding graphene quantum dots, the addition of the graphene quantum dots The amount is 10% of the concentration of artificial graphite powder, and then wet ball milling is carried out according to the ball-to-material ratio of 30:1 and the ball milling time of 30 hours. After ball milling, the slurry is obtained by filtration, and finally dried and powdered to obtain ultrafine artificial graphite powder, wherein, The graphene quantum dots can be recycled again.

[0026] In this embodiment, the artificial graphite powder has a mesh size of 50-100 mesh, the ball milling medium adopts zirconia balls with a diameter of 3mm, and the graphene quantum dots are used as the carbon source. It is prepared by the method and recovered by pressure filtration to achieve reuse.

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Embodiment 2

[0029] This embodiment is basically the same as Embodiment 1, except that the slurry concentration is 15%.

[0030] The median particle size D of the ultrafine artificial graphite powder prepared in this embodiment 50 up to 54 μm.

Embodiment 3

[0032] This embodiment is basically the same as Embodiment 1, except that the slurry concentration is 20%.

[0033] The median particle size D of the ultrafine artificial graphite powder prepared in this embodiment 50 Reaching 89 μm, the slurry concentration of this example is higher than that of Example 1 and Example 2, but the median particle size of the powder increases. The main reason is that too high slurry concentration will lead to higher viscosity of the slurry. The rheology of the slurry will be reduced, which will increase the retarding movement of the slurry to the grinding medium, thereby weakening the grinding and impact of the grinding medium on the material.

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Abstract

The invention relates to the technical field of superfine powder and discloses superfine artificial graphite powder and a preparation method thereof. Graphene quantum dots are creatively introduced, awet grinding process and process parameters are optimized on the basis of the graphene quantum dots, and compared with an existing dispersant, the graphene quantum dots can effectively stop agglomeration of graphite particles, have the better effect, can be removed more easily, cause no environmental pollution, can be recycled and fully achieve energy saving and environmental protection purposesand have high actual applicability. The prepared superfine artificial graphite powder has the median particle diameter D50 up to 9 mu m at lowest and the content of particles smaller than 10 mu m reaching 99.28%.

Description

technical field [0001] The invention relates to the technical field of ultrafine powders, and more particularly relates to an ultrafine artificial graphite powder and a preparation method thereof. Background technique [0002] Ultrafine powder refers to the size between molecules, atoms and bulk materials, usually refers to tiny solid particles in the range of 1-100μm, including metal, non-metal, organic, inorganic and biological material particles. Ultrafine powders are usually divided into micron-scale, sub-micron-scale and nano-scale powders. Powders with a particle size larger than 1 μm are called micron materials, powders with a particle size smaller than 1 μm and larger than O.1 μm are called submicron materials, and powders with a particle size of 0.001 to 0.1 μm (ie, 1 to 100 μm) are called nanometer materials. Material. After the material is ultrafine, especially when it is in the submicron and nanometer state, its scale is between atoms, molecules and bulk materi...

Claims

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Application Information

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IPC IPC(8): C01B32/21B02C17/10B02C17/20
Inventor 林前锋李丽萍
Owner HUNAN GUOSHENG GRAPHITE TECH CO LTD