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Manufacturing method of graphite material

A manufacturing method and graphite material technology, which are applied in the manufacturing field of graphite materials, can solve the problems of poor thermal shock resistance, low bulk density and mechanical strength, and achieve good thermal shock resistance, high bulk density and mechanical strength. effect of science

Active Publication Date: 2012-03-21
吉林市高科特种炭素材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The graphite material manufactured by the existing graphite material manufacturing method has a bulk density of 1.66 g / cm 3 , the flexural strength is 22 Mpa, and the compressive strength is 14 Mpa. Due to the low volume density and mechanical strength of the graphite material manufactured by the existing graphite material manufacturing method, the thermal shock resistance is poor, and it is not suitable for high temperature and sudden temperature changes. use

Method used

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Embodiment Construction

[0028] The technical solution adopted to realize the object of the present invention is that a kind of manufacturing method of graphite material comprises the following steps:

[0029] (a) Preparation of raw materials:

[0030] Coke Type: Mizushima Class M Needle Coke

[0031] Analysis result: true density: 2.13 g / cm 3 , Ash: 0.03%, Volatile: 0.22%, Moisture: 0.09%,

[0032] The binder is medium temperature coal tar pitch

[0033] Its physical and chemical indicators: ash: 0.20%, volatile matter: 64.2%, moisture: 0.06%;

[0034] (b) Ingredients: Raw materials by weight %, M grade Mizushima needle coke 80%

[0035] The ball milling powder purity of grade M Mizushima needle coke is 70-80%

[0036] Medium temperature coal tar pitch 20%

[0037] The particle size composition of M grade Mizushima needle coke: <0.075mm accounts for 37-43%, 0.075-0.5mm accounts for 17-23%, 0.5-1mm accounts for 37-43%, 1-2mm<4%;

[0038] (c) Kneading: Pour the graded ingredients into the knead...

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Abstract

The invention provides a manufacturing method of a graphite material. The manufacturing method is characterized by comprising the following steps: preparing raw materials such as M-class Mizushima needle coke and an adhesive which is intermediate-temperate coal tar pitch; blending the materials in percentage by weight: 80% of the M-class Mizushima needle coke and 20% of the intermediate-temperatecoal tar pitch, wherein the purity of ball milled powder of the M-class Mizushima needle coke is 70-80%, and composition of granularity of ingredients of the M-class Mizushima needle coke is as follows: 37-43% of the granularity of less than 0.075mm, 17-23% of the granularity of 0.075-0.5mm, 37-43% of the granularity of 0.5-1mm and less than 4% of the granularity of 1-2mm; kneading; press-forming; crushing; homogenizing and isostatically pressing paste powder; primary roasting; roasting after impregnation; and graphitizing to finally obtain the finished product. The manufacturing method provided by the invention is reasonable in raw material selection and is scientific in technological process; and the graphite material obtained by the manufacturing method has the advantages of high volume density, high mechanical strength and strong thermal shock resistance, thus being suitable for being used in case of high temperature and sudden temperature change.

Description

technical field [0001] The invention is a manufacturing method of graphite material. Background technique [0002] The graphite material manufactured by the existing graphite material manufacturing method has a bulk density of 1.66 g / cm 3 , the flexural strength is 22 Mpa, and the compressive strength is 14 Mpa. Due to the low volume density and mechanical strength of the graphite material manufactured by the existing graphite material manufacturing method, the thermal shock resistance is poor, and it is not suitable for high temperature and sudden temperature changes. use. Under the scouring of the gas flow, it will be ablated at a faster speed. Therefore, it is necessary to develop a material with excellent high temperature performance. Contents of the invention [0003] The purpose of the present invention is to carry out substantive improvement to existing graphite material manufacturing process, provide a kind of raw material selection reasonable, the manufacturing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 邱庭举解治友高江
Owner 吉林市高科特种炭素材料有限责任公司
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