Graphite block, graphite member and method for inhibiting expansion of negative electrode graphitization box-type furnace

A graphite block and box-type furnace technology, applied in the field of carbon materials, can solve the problems of box plate deformation, inability to avoid the problem of powder expansion in the box, and difficult operation, so as to achieve a basically constant axial pressure range and reduce severe oxidation spraying. Furnace risk, the effect of protecting the structure of the furnace head

Active Publication Date: 2022-07-12
眉山士达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Squeeze deformation of spray furnace and burner head wall is a problem faced by many box furnaces in the industry at present. After the research, each company has also taken some measures, mainly focusing on power transmission and box assembly, and has also achieved some results. However, corresponding land also comes with negative costs
For example, prolonging the power transmission curve will lead to higher unit consumption and lower production capacity. The operation of expansion joints reserved for box plate assembly is difficult and cannot avoid the problem of powder expansion in the box. The reinforcement investment of the furnace head wall is large and will lead to internal stress in the furnace. Large and cause deformation of the box board, etc.
[0007] Therefore, at present, the deformation of the wall of the furnace head and the spraying of the furnace still cannot be completely eliminated, and occur from time to time

Method used

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  • Graphite block, graphite member and method for inhibiting expansion of negative electrode graphitization box-type furnace
  • Graphite block, graphite member and method for inhibiting expansion of negative electrode graphitization box-type furnace
  • Graphite block, graphite member and method for inhibiting expansion of negative electrode graphitization box-type furnace

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Experimental program
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Effect test

Embodiment 1

[0047] Please refer to figure 1 and figure 2 , This embodiment provides a graphite block 11, the graphite block 11 is in the shape of a bar. The length direction perpendicular to the graphite block 11 is set as the first preset direction, and the cross section of the graphite block 11 along the first preset direction is an isosceles trapezoid. In this embodiment, further, the acute angle of the isosceles trapezoid is less than or equal to 85°, so as to ensure that the slope of the graphite block 11 has a sufficient slope.

[0048] The present embodiment provides a graphite member 10, and the graphite member 10 is composed of a set of graphite groups. The graphite group consists of at least one graphite block 11 continuously arranged along the length direction, and the cross-sections of the graphite blocks 11 in the same group along the first preset direction overlap.

[0049] This embodiment also provides a method for suppressing the expansion of the negative electrode gra...

Embodiment 2

[0056] For the parts not mentioned in this embodiment, reference may be made to Embodiment 1.

[0057] Please refer to image 3 and Figure 4 , in this embodiment, the cross section of the graphite block 21 along the first preset direction is a right-angled trapezoid. In this embodiment, further, the acute angle of the right-angled trapezoid is ≤85°.

[0058] This embodiment provides a graphite member 20, and the graphite member 20 is composed of two groups of graphite groups. The graphite group consists of a plurality of graphite blocks 21 that are continuously arranged along the length direction, and the cross-sections of the graphite blocks 21 located in the same group along the first preset direction overlap. The length directions of the adjacent two groups of graphite groups are arranged in parallel, and the arrangement direction of the adjacent two groups of graphite groups is set as a second preset direction, and the second preset direction is perpendicular to the le...

Embodiment 3

[0062] For the parts not mentioned in this embodiment, reference may be made to Embodiment 1.

[0063] Please refer to Figure 5 and Image 6 , In this embodiment, the cross section of the graphite block 31 along the first preset direction is a right-angled trapezoid. In this embodiment, further, the acute angle of the right-angled trapezoid is ≤85°.

[0064] This embodiment provides a graphite member 30, and the graphite member 30 is composed of two groups of graphite groups. The graphite group consists of a plurality of graphite blocks 31 arranged continuously along the length direction, and the cross-sections of the graphite blocks 31 in the same group along the first preset direction overlap. The length directions of the adjacent two groups of graphite groups are arranged in parallel, and the arrangement direction of the adjacent two groups of graphite groups is set as a second preset direction, and the second preset direction is perpendicular to the length direction an...

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Abstract

The invention provides a graphite block, a graphite component and a method for inhibiting expansion of a negative electrode graphitization box-type furnace, and relates to the technical field of carbon materials. The graphite block is strip-shaped, and the section of the graphite block is triangular or trapezoidal; the graphite component consists of at least one graphite group; each graphite group is formed by continuously arranging at least one graphite block, the sections of the graphite blocks in the same group coincide, and the length directions of two adjacent graphite groups are arranged in parallel; the method comprises the following steps: arranging a box body in a negative electrode graphitization box-type furnace; the two graphite components are arranged in the negative electrode graphitization box-type furnace and are symmetrically arranged on the two outer sides of the box body respectively. Graphite components composed of the graphite blocks are installed at flow equalizing buffer areas at the two ends of a box-type furnace when the negative electrode graphitization box-type furnace is charged, axial expansion displacement of a box body in the graphitization process is absorbed and restrained through the material guiding effect of the inclined faces of the wedge-shaped structures, the acting force of expansion of the box body on a furnace end can be obviously improved, and the graphitization effect of the negative electrode graphitization box-type furnace is improved. The service life of the burner is prolonged; and the furnace spraying risk is reduced.

Description

technical field [0001] The present application relates to the technical field of carbon materials, in particular, to a graphite block, a graphite component and a method for inhibiting the expansion of a negative electrode graphitization box furnace. Background technique [0002] Artificial graphite anode material is the mainstream material in the current stage of lithium-ion battery anode materials. With the rapid development of new energy vehicles and energy storage projects in recent years, its market demand has also increased significantly. From 2021 to 2022, about 500wt of graphitized anode production capacity has been launched in China, the demand for subsequent lithium-ion batteries in the entire market will increase, and the technology and cost advantages of artificial graphite anodes at this stage (there is no substitute for artificial graphite anodes and the production cost is higher). low volume production technology) is quite optimistic. [0003] The artificial g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/225C01B32/205
CPCC01B32/225C01B32/205Y02E60/10
Inventor 洪伟陈扬
Owner 眉山士达新材料有限公司
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