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Method of preparing graphite fine powder using detonation cracking expandable grahpite

A technology of expanded graphite and graphite micropowder, which is applied in the direction of fibrous fillers, etc., can solve the problems of complex preparation process and serious energy consumption, and achieve the effect of simple process and low energy consumption

Inactive Publication Date: 2007-03-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of complex preparation process and serious energy consumption of predecessors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The invention discloses a method for preparing graphite micropowder by detonation cracking expandable graphite, which consists of ingredients mixing and detonation process. In the ingredient mixing process, the 40-mesh expandable graphite with a mass ratio of 60% and the RDX with a mass ratio of 40% are evenly mixed. In the explosion reaction kettle, the detonator is detonated, and after cracking, 30.2% of 1-micron graphite, 50.2% of 1-5 micron graphite, and 19.6% of 5-10 micron graphite can be obtained.

Embodiment 2

[0011] The invention discloses a method for preparing graphite micropowder by detonation cracking expandable graphite, which consists of ingredients mixing and detonation process. In the ingredient mixing process, the 80-mesh expandable graphite with a mass ratio of 40% and TNT with a mass ratio of 60% are uniformly mixed. In the explosion reactor, the detonator is detonated, and after cracking, 28.2% of 1-micron graphite, 40.2% of 1-5 micron graphite, and 31.6% of 5-10 micron graphite can be obtained.

Embodiment 3

[0013] The invention discloses a method for preparing graphite micropowder by detonation cracking expandable graphite, which consists of ingredients mixing and detonation process. In the ingredient mixing process, the 40-mesh expandable graphite with a mass ratio of 50% and the ammonium nitrate with a mass ratio of 50% are uniformly mixed. In the explosion reactor, the high-energy primary explosive is used to detonate, and after cracking, 20.2% of 1-micron graphite, 30.2% of 1-5 micron graphite, and 49.6% of 5-10 micron graphite can be obtained.

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PUM

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Abstract

A process for preparing the superfine (1-10 microns) graphite powder includes such steps as proportionally mixing the expandable graphite with explosive in reactor, detonating, and exploding for cracking the expandable graphite.

Description

technical field [0001] The invention belongs to the technical field of graphite powder preparation, and relates to a method for preparing graphite powder by detonation cracking expandable graphite. Background technique [0002] Graphite is an important non-metallic mineral in my country. It has properties such as electrical conductivity, thermal conductivity, high temperature resistance, thermal shock resistance, stable chemical properties, lubrication, and plasticity. It is widely used in metallurgy, machinery manufacturing, electrical, chemical, nuclear industries and other fields. . Among them, micropowder graphite is mainly used in electronics and aviation industries, such as kinescope graphite milk and graphite electrodes, oil-based colloidal graphite, batteries and pencils, etc. There are a variety of grinding equipment for preparing fine powder graphite, mainly including five types of high-speed mechanical impact mills, airflow machines, vibrating mills, medium stirri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/46C01B31/04
Inventor 李晓杰闫鸿浩孙贵磊
Owner DALIAN UNIV OF TECH