CN104591155A - Purification method for fine flake graphite - Google Patents
Purification method for fine flake graphite Download PDFInfo
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- CN104591155A CN104591155A CN201310524445.5A CN201310524445A CN104591155A CN 104591155 A CN104591155 A CN 104591155A CN 201310524445 A CN201310524445 A CN 201310524445A CN 104591155 A CN104591155 A CN 104591155A
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Abstract
The invention discloses a purification method for fine flake graphite. The method includes: putting graphite into a 40% sodium hydroxide solution, stirring the mixture evenly, then putting the mixture into a reaction pot to conduct fusion at 450DEG C for 25min, and then performing cooling at room temperature; after cooling to less than 100DEG C, conducting washing to neutral, then adding hydrochloric acid accounting for 35% of the weight of the graphite, conducting indirect stirring for 30-40min, and then performing washing to neutral; and after dehydration, conducting drying at 40-60DEG C. The graphite and the sodium hydroxide solution are in a ratio of (0.5-0.6):1. The method is simple and is convenient to operate, the reaction time is short, serious environmental pollution is effectively avoided, and at the same time, impurities are effectively removed, the graphite purity is improved, and the energy consumption is little.
Description
Technical field
The invention belongs to graphite technology field, be specifically related to a kind of method of purification of Fine particle processing.
Background technology
High purity graphite has that intensity is high, good thermal shock, high temperature resistant, anti-oxidant, specific resistance is little, corrosion-resistant, be easy to the advantages such as accurate machining, be desirable ceramic.Prior art, purifies to graphite, and need high temperature sintering, melting, energy expenditure is large.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, provide a kind of method of purification of Fine particle processing, method is simple, and cost is low.
The method of purification of Fine particle processing provided by the invention, comprises the following steps: graphite is put into the sodium hydroxide solution that concentration is 40% by (1), stirs, put into reactor afterwards and carry out melting, melt temperature is 450 DEG C, and melting 25min, at room temperature cools afterwards; (2) to be cooledly after less than 100 DEG C, be washed to neutrality, add hydrochloric acid according to 35% of graphite weight afterwards, indirectly stir 30-40min, be washed to neutrality afterwards; (3) dewater, dry at the temperature of 40-60 DEG C afterwards.The proportioning of described graphite and sodium hydroxide solution is (0.5-0.6): 1.
The method of purification of Fine particle processing provided by the invention, its beneficial effect is, method is simple, and easy to operate, the reaction times is short, and while effectively avoiding serious environmental pollution, effective despumation, improve graphite purity, and energy loss is few.
Embodiment
Below in conjunction with an embodiment, the method for purification of Fine particle processing provided by the invention is described in detail.
Embodiment
The method of purification of the Fine particle processing of the present embodiment, comprise the following steps: graphite is put into the sodium hydroxide solution that concentration is 40% by (1), the proportioning of described graphite and sodium hydroxide solution is 0.5:1, both mixing and stirring, put into reactor afterwards and carry out melting, melt temperature is 450 DEG C, and melting 25min, at room temperature cools afterwards; (2) to be cooledly after less than 100 DEG C, be washed to neutrality, add hydrochloric acid according to 35% of graphite weight afterwards, indirectly stir 40min, be washed to neutrality afterwards; (3) dewater, dry at the temperature of 50 DEG C afterwards.
Claims (2)
1. a method of purification for Fine particle processing, is characterized in that: comprise the following steps: graphite is put into the sodium hydroxide solution that concentration is 40% by (1), stirs, put into reactor afterwards and carry out melting, melt temperature is 450 DEG C, and melting 25min, at room temperature cools afterwards; (2) to be cooledly after less than 100 DEG C, be washed to neutrality, add hydrochloric acid according to 35% of graphite weight afterwards, indirectly stir 30-40min, be washed to neutrality afterwards; (3) dewater, dry at the temperature of 40-60 DEG C afterwards.
2. the method for purification of Fine particle processing according to claim 1, is characterized in that: the proportioning of described graphite and sodium hydroxide solution is (0.5-0.6): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524445.5A CN104591155A (en) | 2013-10-31 | 2013-10-31 | Purification method for fine flake graphite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310524445.5A CN104591155A (en) | 2013-10-31 | 2013-10-31 | Purification method for fine flake graphite |
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| Publication Number | Publication Date |
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| CN104591155A true CN104591155A (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310524445.5A Pending CN104591155A (en) | 2013-10-31 | 2013-10-31 | Purification method for fine flake graphite |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462452A (en) * | 2017-09-25 | 2017-12-12 | 苏州中材非金属矿工业设计研究院有限公司 | A kind of method for determining crystalline flake graphite ore deposit particle size distribution characteristics |
| CN107720727A (en) * | 2016-08-08 | 2018-02-23 | 明道学校财团法人明道大学 | Graphite ore purification process |
| CN108751188A (en) * | 2018-08-08 | 2018-11-06 | 青岛领军节能与新材料研究院 | A kind of graphite purification method |
| WO2021232090A1 (en) * | 2020-05-18 | 2021-11-25 | Ecograf Limited | Method of producing purified graphite |
| WO2023081979A1 (en) * | 2021-11-15 | 2023-05-19 | Ecograf Limited | Improved method of producing purified graphite |
-
2013
- 2013-10-31 CN CN201310524445.5A patent/CN104591155A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107720727A (en) * | 2016-08-08 | 2018-02-23 | 明道学校财团法人明道大学 | Graphite ore purification process |
| CN107462452A (en) * | 2017-09-25 | 2017-12-12 | 苏州中材非金属矿工业设计研究院有限公司 | A kind of method for determining crystalline flake graphite ore deposit particle size distribution characteristics |
| CN107462452B (en) * | 2017-09-25 | 2020-07-07 | 苏州中材非金属矿工业设计研究院有限公司 | Method for measuring particle size distribution characteristics of flake graphite ore |
| CN108751188A (en) * | 2018-08-08 | 2018-11-06 | 青岛领军节能与新材料研究院 | A kind of graphite purification method |
| WO2021232090A1 (en) * | 2020-05-18 | 2021-11-25 | Ecograf Limited | Method of producing purified graphite |
| AU2021261902B2 (en) * | 2020-05-18 | 2021-12-16 | Ecograf Limited | "Method of producing purified graphite" |
| US11702342B2 (en) | 2020-05-18 | 2023-07-18 | Ecograf Limited | Method of producing purified graphite |
| WO2023081979A1 (en) * | 2021-11-15 | 2023-05-19 | Ecograf Limited | Improved method of producing purified graphite |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150506 |