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Graphitization process and graphitization furnace of ultrafine-particle artificial graphite

A technology of artificial graphite and ultrafine particles, applied in the direction of inorganic chemistry, carbon compounds, chemical instruments and methods, etc., can solve problems such as cracking of graphitized products, achieve simplified operation, uniform and stable product quality, and high temperature same effect

Inactive Publication Date: 2018-05-29
KAIFENG CARBON CO LTD OF CHINA PINGMEI SHENMA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a kind of superfine particle artificial graphite graphitization process and graphitization furnace, to solve the technical problem of graphitization products cracking caused by furnace core temperature difference in existing graphitization furnaces

Method used

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  • Graphitization process and graphitization furnace of ultrafine-particle artificial graphite
  • Graphitization process and graphitization furnace of ultrafine-particle artificial graphite
  • Graphitization process and graphitization furnace of ultrafine-particle artificial graphite

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Embodiment 1

[0031] Example 1: Such as figure 2 As shown, an ultrafine particle artificial graphite graphitization furnace includes a horizontally arranged furnace body 4, a furnace head electrode 5, and a furnace tail electrode 6. The furnace body 4 includes a refractory inner furnace layer 41 and an insulating outer furnace layer 42, and the furnace head The electrode 5 and the support frame are installed at the front end of the furnace body 4, and the furnace tail electrode 6 and the pushing device are installed at the end of the furnace body 4. The furnace head electrode 5 and the furnace end electrode 6 are cylindrical, and both have a water tank channel 7 In order to realize its own cooling; a plurality of coaxially arranged products 1 are arranged between the furnace head electrode 5 and the furnace tail electrode 6, a connector 8 is provided between two adjacent products 1, and the product 1 is connected to the furnace head electrode 5 and the furnace. A furnace core regulator 9 is ...

Embodiment 2

[0032] Example 2: Such as image 3 As shown, a graphitization process for ultrafine particles of artificial graphite includes the following steps:

[0033] The first step is to install the furnace: first remove the furnace tail electrode from the furnace and lay a layer of 200mm insulating material on the bottom of the furnace; then install multiple products coaxially between the furnace head electrode and the furnace tail electrode, two of which are adjacent Install the connector between the products, install the furnace core regulator between the products and the furnace head electrode and furnace tail electrode; then use the furnace tail pusher to tighten the furnace tail electrode with a pressure of 10.0 MPa; finally, on the side, The top is covered with 800mm insulation material.

[0034] The second step, power transmission: the water tank channel is connected to cooling water to cool the furnace head electrode and furnace tail electrode during the entire power transmission p...

Embodiment 3

[0037] Example 3: Such as image 3 As shown, a graphitization process for ultrafine particles of artificial graphite includes the following steps:

[0038] The first step is to install the furnace: first remove the furnace tail electrode from the furnace and lay a layer of 300mm insulation material on the bottom of the furnace; then install multiple products coaxially between the furnace head electrode and the furnace tail electrode, two of which are adjacent Install the connector between the products, install the furnace core regulator between the products and the furnace head electrode and furnace tail electrode; then use the furnace tail pushing device to push the furnace tail electrode tightly, and the pressure is 12.5 MPa; finally on the side, The top is covered with 650mm insulation material.

[0039] The second step, power transmission: the water tank channel is connected to cooling water to cool the furnace head electrode and furnace tail electrode during the entire power ...

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Abstract

The invention discloses a graphitization process and a graphitization furnace of ultrafine-particle artificial graphite, and belongs to the technical field of carbon graphitization. The graphitizationprocess comprises the following steps: S1, furnace charging: laying a bottom-layer insulation material on the bottom of a furnace, then coaxially arranging products between a furnace end electrode and a furnace tail electrode, arranging one connector between each two adjacent products, arranging a furnace core regulator between the products and the furnace end electrode, arranging a furnace coreregulator between the products and the furnace tail electrode, then tightly pressing the furnace tail electrode, and finally covering the top and the side with heat-insulation materials; S2, power supply: supplying power according to a power-supply curve, and simultaneously cooling the furnace end electrode and the furnace tail electrode by water; and S3, cooling and discharging: first, cooling the top-layer heat-insulation material by spraying water, then discharging the pressure of the furnace tail, extracting the heat-insulating materials, and finally carrying out furnace hoisting and discharging. In the invention, the temperatures at various positions of the furnace core are the same, the internal thermal stress of the products is small, the product quality is uniform and stable, and resistance materials are not used in the process, so that a large amount of resistance materials can be saved, the power consumption can be reduced by 25-30%, and the power supply period is short.

Description

Technical field [0001] The invention relates to the technical field of carbon graphitization, in particular to a graphitization process and a graphitization furnace for ultrafine particle artificial graphite. Background technique [0002] Graphite is a crystalline mineral of carbon elements. In graphite crystals, carbon atoms in the same layer are hybridized with sp2 to form covalent bonds. Each carbon atom is connected to three other atoms by three covalent bonds, six carbon atoms A regular hexagonal ring is formed on the same plane, which stretches into a layered structure. The carbon atoms in the same plane still have a p-orbital each. They overlap each other, and the electrons are relatively free, which is equivalent to the free electrons in metal, so graphite can conduct heat and conduct electricity. The appearance of graphite is iron ink to dark gray, density 2.25g / cm3, hardness 1.5, melting point 3850±50°C, boiling point 4250°C. Graphite's high temperature resistance, el...

Claims

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Application Information

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IPC IPC(8): C01B32/205
Inventor 刘运平路培中冯俊杰袁强张胜恩杜爱芳张谦周浩李悦陈茜茹
Owner KAIFENG CARBON CO LTD OF CHINA PINGMEI SHENMA GRP