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Graphite purification process

A graphite purification and process technology, which is applied in the direction of inorganic chemistry, non-metallic elements, carbon compounds, etc., can solve the problems that graphite cannot meet the purity requirements and cannot meet the demand, and achieve the effect of low cost, simple equipment and simple operation

Inactive Publication Date: 2021-12-31
世星科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The graphite purified by the existing purification technology does not meet the purity requirements and cannot meet the demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A graphite purification process, comprising the steps of:

[0056] Step 1: put ordinary graphite powder into a high-temperature graphite purification furnace, and raise the temperature to 2500°C in an environment with argon purity of 99.999% and positive pressure in the furnace;

[0057] Step 2: Vacuumize from the high-temperature graphite purification furnace to the furnace pressure of 100torr to stop vacuuming;

[0058] Step 3: Introduce argon gas with a purity of 99.999% into the high-temperature graphite purification furnace until the furnace pressure is 600 torr and stop the ventilation;

[0059] Step 4: Feed Freon gas into the high-temperature graphite purification furnace;

[0060] Step 5: Continue to heat up the high-temperature graphite purification furnace for purification reaction;

[0061]Step 6: Vacuumize from the high-temperature graphite purification furnace to the furnace pressure of 100torr to stop vacuuming;

[0062] Step 7: Introduce argon gas with...

Embodiment 2

[0074] A graphite purification process, comprising the steps of:

[0075] Step 1: put ordinary graphite powder into a high-temperature graphite purification furnace, and raise the temperature to 3000°C in an environment with argon purity of 99.999% and positive pressure in the furnace;

[0076] Step 2: Vacuumize from the high-temperature graphite purification furnace to a furnace pressure of 350torr and stop vacuuming;

[0077] Step 3: Introduce argon gas with a purity of 99.999% into the high-temperature graphite purification furnace until the furnace pressure is 700 torr and stop the ventilation;

[0078] Step 4: Feed Freon gas into the high-temperature graphite purification furnace;

[0079] Step 5: Continue to heat up the high-temperature graphite purification furnace for purification reaction;

[0080] Step 6: Vacuumize from the high-temperature graphite purification furnace to a furnace pressure of 350torr to stop vacuuming;

[0081] Step 7: Introduce argon gas with a...

Embodiment 3

[0093] A graphite purification process, comprising the steps of:

[0094] Step 1: put ordinary graphite powder into a high-temperature graphite purification furnace, and raise the temperature to 3500°C in an environment with argon purity of 99.999% and positive pressure in the furnace;

[0095] Step 2: Vacuumize from the high-temperature graphite purification furnace to a furnace pressure of 500torr to stop vacuuming;

[0096] Step 3: Introduce argon gas with a purity of 99.999% into the high-temperature graphite purification furnace until the furnace pressure is 750 torr and stop the ventilation;

[0097] Step 4: Feed Freon gas into the high-temperature graphite purification furnace;

[0098] Step 5: Continue to heat up the high-temperature graphite purification furnace for purification reaction;

[0099] Step 6: Vacuumize from the high-temperature graphite purification furnace to a furnace pressure of 500 torr to stop vacuuming;

[0100] Step 7: Introduce argon gas with a...

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Abstract

The invention discloses a graphite purification process which comprises the following steps: 1, putting graphite powder into a graphite purification furnace, and conducting heating; 2, vacuumizing the graphite purification furnace; 3, introducing argon into the graphite purification furnace; 4, introducing Freon into the graphite purification furnace; 5, heating the graphite purification furnace; 6, vacuumizing the graphite purification furnace; 7, introducing argon into the graphite purification furnace; 8, introducing Freon into the graphite purification furnace; 9, heating the graphite purification furnace; 10, vacuumizing the graphite purification furnace; 11, introducing argon into the graphite purification furnace; 12, introducing Freon into the graphite purification furnace; 13, heating the graphite purification furnace; 14, vacuumizing the graphite purification furnace; 15, introducing argon into the graphite purification furnace; 16, introducing Freon into the graphite purification furnace; and 17, heating the graphite purification furnace. According to the method, the graphite can be purified to 99.999%, and the method is simple in equipment, easy to operate, low in cost and free of pollution to air or water.

Description

technical field [0001] The invention relates to the technical field of graphite chemical industry, in particular to a graphite purification process. Background technique [0002] Graphite is an important non-metallic mineral resource. It has many excellent properties such as corrosion resistance, radiation protection, thermal conductivity, electrical conductivity, high temperature resistance, and self-lubrication. It is widely used in many fields and is known as "black gold". say. Graphite is used in many industries, such as pencils for daily use, lubricants in the mechanical industry, electrodes, brushes, carbon rods in the electrical industry, and so on. At the same time, graphite can also be used to prepare graphene, which will drive technological revolutions in the fields of new energy and new materials. The purity of graphite determines its use value, the higher the purity, the greater its use value. [0003] In many cutting-edge technology applications, the purity o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/215
CPCC01B32/215
Inventor 杨文斌吴永飞陈夫忠俞晓伟王亚东
Owner 世星科技股份有限公司