Technical method for producing isostatic pressure graphite

A process method and isostatic pressing technology, which is applied in the process of static pressing isotropic graphite materials, can solve the problems of difference in volume shrinkage of fillers and binders, poor structural uniformity, low mechanical strength, etc., and shorten the production cycle. , The structure is fine and dense, and the effect of improving mechanical properties

Active Publication Date: 2010-09-08
SICHUAN GUANGHAN SHIDA CARBON +1
View PDF4 Cites 52 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above process, more than one-third of the binder decomposes and volatilizes during the roasting process, resulting in a difference in volume shrinkage between the filler and the binder, which eventually results in graphite materials with high porosity, poor structure uniformity, Disadvantages such as obvious interfaces, resulting in lower mechanical strength of the final material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Technical method for producing isostatic pressure graphite
  • Technical method for producing isostatic pressure graphite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] 1. Binder: modified asphalt (produced by Taiyuan Iron and Steel (Group) Co., Ltd.), its main properties are as follows:

[0035] Carbon residue rate: 53%; softening point: 105°C; volatile matter: 57.7%.

[0036] 2. Impregnation agent (produced by Shanxi Jinyuan Chemical Co., Ltd.), its main properties are as follows:

[0037] Medium temperature asphalt: carbon residue rate: 50.2%; softening point: 79.5°C; volatile matter: 58.6%.

[0038] High-temperature asphalt: carbon residue rate: 56.6%; softening point: 97.0°C; volatile matter: 54.1%.

[0039] 3. Filler: Calcined petroleum coke (produced by Sinopec Jinxi Refinery and Chemical Plant), its main properties are as follows:

[0040] Ash: 0.26%; Moisture: 0.38%.

[0041] see figure 1 , process of the present invention is carried out according to the following steps:

[0042] a), jet milling

[0043] Calcined petroleum coke or pitch coke is coarsely crushed and crushed with a jet mill to make coke powder with an aver...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
softening pointaaaaaaaaaa
softening pointaaaaaaaaaa
Login to view more

Abstract

The invention provides a technical method for producing isostatic pressure graphite, which comprises the following steps: using refinery coke or pitch coke as raw materials; crushing raw materials to 5 to 20 mum through airflows; then, carrying out treatment through work procedures such as primary mixing squeezing and sheet milling, extrusion forming, fast carbonization, crushing, sieving, secondary mixing squeezing and sheet milling, crushing, sieving, pre-forming, isostatic pressure forming, calcination, impregnating, graphitization and the like; and obtaining fine particle isostatic pressure isotropical graphite materials. Compared with traditional coarse particle graphite materials, the invention has the characteristics of fine and compact structure, good uniformity, excellent mechanical property, isotropy and the like, and is particularly suitable for the production of large-specification graphite products.

Description

technical field [0001] The invention relates to a manufacturing method of a graphite material, in particular to a process method of an isostatic isotropic graphite material with excellent mechanical properties. Background technique [0002] Graphite material has the characteristics of high temperature resistance, corrosion resistance, self-lubrication, etc., and has been widely used in many fields. With the development of science and technology, various application fields have put forward higher requirements for the performance of graphite materials. Graphite materials are usually prepared by using calcined coke as aggregate carbon and modified pitch as binder, after mechanical mixing, molding, carbonization, impregnation and graphitization heat treatment. However, in the above process, more than one-third of the binder decomposes and volatilizes during the roasting process, resulting in a difference in volume shrinkage between the filler and the binder, which eventually re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 郭全贵刘占军刘朗宋进仁张俊鹏张军华刘长安
Owner SICHUAN GUANGHAN SHIDA CARBON
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap