Production manufacturing method of carbon powder

A manufacturing method and carbon technology, applied in the field of carbon powder M production and manufacturing, can solve the problems of reducing material capacity, complex processing technology and high processing cost, and achieve the effects of improving material specific capacity, simple process method, mature and stable effect

Active Publication Date: 2010-09-01
顾向宏
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 2. In the past, high-end products were mostly treated with complex coating. The main representative product is mesocarbon microspheres MCMB, which reduces the material capacity, and the pre-processing technology is relatively complicated and the processing cost is high.

Method used

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  • Production manufacturing method of carbon powder
  • Production manufacturing method of carbon powder
  • Production manufacturing method of carbon powder

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Experimental program
Comparison scheme
Effect test

example 3

[0087] The prolongation of time finds that the coke conversion carbon process meets the requirements more than example three;

[0088] (6) Three kinds of materials through the above processes are crushed with a crusher, and classified processing is carried out;

[0089] (7) Then use the airflow to grind coarse, medium and fine processing step by step; in the grinding process, it is found that with the gradual increase of the graphitization temperature, the closer the carbon powder is to the ideal index;

[0090] (8) Three kinds of materials are respectively carried out particle size shaping to be layered, sub-ellipse, sub-circle;

[0091] (9) Mix the layered, oval-like and round-like materials in a ratio of 40:30:30 and stir them fully;

[0092] (10) Carry out the high temperature carbonization treatment of at least 2000°C for 1 day to the carbon powder obtained in process 9; the surface of the carbon powder screened after carbonization is more ideal than that in Example 3; c...

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Abstract

The invention discloses a preparation method of carbon powder which is characterized by mixing petroleum coke, pitch coke, coal tar pitch coke according to the ratio 50+ / -5: 30+ / -5: 20+ / -5 after carefully chosen, calcining the mixture at 1200-1400 DEG C, finally processing the mixture into materials with different morphology such as flake, ellipse-like, circular-like after breaking up, screening,pressing, roasting, graphitizing, mechanical processing and treating, doping and spheriodizing and carbonization treating at high temperature, finally obtaining good quality of carbon powder M which has advantages of ordered morphology, high specific capacity, long circulation life with safety and reliability. The art for producing carbon powder M cathode material is simple, maturely and stable, which is suitable for popularization and application in the lithium battery industry.

Description

technical field [0001] The invention relates to the technical field of a method for producing carbon powder M. Background technique [0002] Lithium-ion batteries have a relatively complete industrial chain. At present, there are few domestic manufacturers of industrialized high-performance lithium-ion battery anode materials, and they mainly use natural graphite, ordinary graphite, and natural graphite for coating treatment. Although artificial graphite has good stability, its capacity is low, and its specific surface area and tap density are not ideal. The specific capacity of MCMB can only reach 320mAh / g, and the compacted density of the pole piece can only reach 1.45g / cm 3 , and the processing performance is relatively complex, the process is difficult to control, the cost is high, and it is difficult to meet the demand. [0003] The carbon powder M is specially produced for the lithium battery industry. Petroleum coke, pitch coke, and coal tar pitch coke are carefully...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04H01M4/38C10B57/00
CPCY02E60/10
Inventor 顾向宏
Owner 顾向宏
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