Preparation method of high purity graphite

A production method and high-purity graphite technology, applied in the production field of ultra-high-purity graphite, can solve the problems of increased total cost, increased production cost, low recovery rate, etc. Effect
CN101983917BActive Publication Date: 2012-11-07黑龙江省牡丹江农垦湠奥石墨烯深加工有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
黑龙江省牡丹江农垦湠奥石墨烯深加工有限公司
Publication Date
2012-11-07

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Abstract

The invention discloses a preparation method of high purity graphite, comprising the following steps: adding water in a reactor, putting graphite materials in the reactor, and adding acid; opening an air pump, a compressed air valve and a tail gas valve, introducing compressed air into the reactor, and mixing the materials uniformly; opening a steam valve, introducing the steam into the reactor to, and heating the materials; keeping the reaction materials in the reactor after the primary reaction without discharging, and performing filtering and washing in the reactor until the reacted materials are neutral; and adding a small amount of mixed acid liquor into the reacted materials which are filtered and washed to be neutral, introducing the steam, heating the materials, causing the materials to be subject to secondary reaction, then discharging the materials, and performing centrifugal washing and filtering until the reacted materials are neutral. By utilizing the method in invention,the high purity graphite can be obtained by one-time feeding, discharging and centrifugal washing.
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Description

technical field

[0001] The invention relates to a production method of graphite, in particular to a production method of ultra-high-purity graphite. Background technique

[0002] In the mid-1990s, with the rapid development of the global economy, the production of automobiles, aircraft and military supplies increased sharply. With the continuous development of science and technology, graphite, as a high-quality sealing material for military, aerospace and automobiles, has a large capacity. , Long life characteristics. The amount of lithium battery negative electrode materials is increasing, which puts forward higher requirements for the purity of graphite, and the research and development of high-purity flake graphite and high-purity spherical graphite have made great progress.

[0003] The traditional method and production process are as follows: the temperature of the purification reaction is 80~150°C, the whole reaction is carried out twice, the acidic aqueous solution u...

Claims

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