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Application of graphitization furnace to roasting process

A technology of graphitization furnace and roasting process, which is applied in the direction of inorganic chemistry, carbon compounds, carbon preparation/purification, etc. It can solve the problems of large-scale graphite crucible roasting process, low added value of products, high energy consumption cost, etc., and achieve reduction Energy cost, environmental protection, energy consumption reduction effect

Inactive Publication Date: 2019-04-16
吴建云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the problems that the existing graphite crucible roasting technology has too high energy consumption cost, the added value of the product is not high due to the single function of the graphitization furnace, and it is difficult for the graphitization furnace to perform the roasting process on the large-scale graphite crucible, the present invention provides a graphitization furnace. The application of the furnace to the roasting process, which can complete the roasting process through the graphitization furnace, overcomes the inertial usage of the traditional roasting furnace for the roasting process, reduces the energy consumption cost of the graphite crucible roasting technology, and also saves a lot of investment in furnace construction , greatly improving the overall productivity and efficiency of the graphitization furnace

Method used

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  • Application of graphitization furnace to roasting process
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  • Application of graphitization furnace to roasting process

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Embodiment 1

[0042] An application of a graphitization furnace on a roasting process, which is used for the roasting process of a graphite crucible, and the product 5 to be treated is a graphite crucible green body, and the specific steps include:

[0043] a. Furnace loading: Lay a 300mm quartz sand cushion 402, a 300mm carbon black cushion 403 and a 200mm thermal insulation cushion 404 in the bottom-up sequence of the furnace body 4, above the thermal insulation cushion 404 Lay the first resistance material layer 405 with a thickness of 80-120mm, divide the graphite crucible green bodies into 5 rows, place them in parallel above the first resistance material layer 405, place the graphite crucible green bodies in the middle three rows vertically, and place them on the outermost When the graphite crucible green body is laid, the top is tilted outward, and the inclination angle a is 45-60°. The interior of the graphite crucible green body and between each other are filled with resistance mate...

Embodiment 2

[0049] A kind of application of graphitization furnace about roasting process, used for the roasting process of graphite crucible, with embodiment 1, the difference is: the distance between front and back, left and right between graphite crucible green bodies is 100mm, the upper and lower intervals between graphite crucible green bodies The distance is 120mm, and the resistance material uses calcined petroleum coke with a sulfur content of 2.5% to 2.8%; the particle size of the resistance material is: 4 to 16mm, and the density of the calcined petroleum coke is 0.8 to 1.0g / cm 3 , the thermal insulation material is calcined petroleum coke, and the particle size of the calcined petroleum coke used in the thermal insulation material is 0-1mm; the heating rate in the range of 0-300°C is 11°C / hour, and the heating rate in the range of 300-750°C is 5°C / hour Hours, the heating rate in the range of 750-1200°C is 11°C / hour, the total power transmission time is 7 days, and the cooling ti...

Embodiment 3

[0051] A kind of application of graphitization furnace about roasting process, used for the roasting process of graphite crucible, with embodiment 1, the difference is: the distance between front and back, left and right between graphite crucible green bodies is 80mm, the upper and lower intervals between graphite crucible green bodies The distance is 80mm, and the resistance material uses the particle size coke after the broken anode with a sulfur content of 3.3%~3.5%. The particle size of the resistance material is 15~30mm, and the particle size coke after the broken anode is 1~1.2g / cm 3 , the thermal insulation material is calcined petroleum coke, and the particle size of the calcined petroleum coke used in the thermal insulation material is 1-2 mm; the heating rate in the range of 0-300 °C is 9 °C / hour, and the heating rate in the range of 300-750 °C is 3 °C / hour Hours, the heating rate in the range of 750~1200℃ is 9℃ / hour, the total power transmission time is 10 days, an...

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Abstract

The invention discloses application of a graphitization furnace to a roasting process, and belongs to the technical field of carbon production. The Acheson graphitization furnace is adopted for the roasting process of a carbon material, wherein the Acheson graphitization furnace comprises at least one furnace body; each furnace body is surrounded by refractory furnace walls, and a cushion layer islaid at the bottom of each furnace body; a first resistance material layer is laid on each cushion layer; to-be-treated products are placed on the first resistance material layers, and filled with aresistance material, and the portions among the be-treated products are filled with a resistance material; second resistance layers are laid on the to-be-treated products; furnace top heat insulationmaterial layers are laid on the second resistance material layers. By means of the Acheson graphitization furnace, the roasting and graphitization process of graphite crucibles can be completed, a lotof furnace building investment is reduced, and the overall productivity and benefits of the graphitization furnace are greatly increased.

Description

technical field [0001] The invention belongs to the technical field of carbon production, and in particular relates to the application of a graphitization furnace on a roasting process. Background technique [0002] At present, in the production process of carbon materials and carbon products, high temperature treatment must be carried out, such as graphite electrodes, graphite crucibles, lithium battery negative electrode materials, graphitized recarburizers, etc., the maximum temperature is in the range of 1200-3000 ℃, This high-temperature treatment process can be a process such as roasting or graphitization. The maximum temperature and temperature process curve corresponding to these two processes are different; the types of fuel to be consumed are not exactly the same, and the corresponding furnace types are also different. For example, the roasting process requires a ring-type roaster. The roaster uses gas as the energy source. The heat is conducted from the outside to...

Claims

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Application Information

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IPC IPC(8): C01B32/205C01B32/05C04B35/52C04B35/622C04B35/64
CPCC04B35/522C04B35/622C04B35/64C01B32/05C01B32/205
Inventor 吴建云谢时杰吴乐云朱亚锋李新春王启明
Owner 吴建云
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