CN105819436A - Method and device for purifying graphite - Google Patents
Method and device for purifying graphite Download PDFInfo
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- CN105819436A CN105819436A CN201610293532.8A CN201610293532A CN105819436A CN 105819436 A CN105819436 A CN 105819436A CN 201610293532 A CN201610293532 A CN 201610293532A CN 105819436 A CN105819436 A CN 105819436A
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- graphite
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- feed pipe
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
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Abstract
The invention relates to a device for purifying graphite. The device comprises a graphite feeding opening (1), a feeding pipe (2), a resistance furnace (3), a furnace body (4), a vacuumizing hole (5), an air outlet (6), a first cooling chamber (7), an inert gas injection pump (8), a second cooling chamber (9), a discharging opening (10), a plasma torch (12) and a discharging pipe (14), wherein the graphite feeding opening (1) is connected with one end of the feeding pipe (2), the resistance furnace (3) is arranged at the outer side of the pipe wall of the feeding pipe (2), and the other end of the feeding pipe (2) is connected with the top of the furnace body (4). The invention further relates to a method for purifying graphite with the device. The method is simple and feasible, the device is low in energy consumption, the temperature is raised rapidly, and the purification effect is good.
Description
Technical field
The invention belongs to technical field of graphite purification, be specifically related to a kind of method and device that native graphite is carried out high-purity purification.
Background technology
Graphite is a kind of crystalline carbon, and hexagonal crystal system, for ferrum mass colour to Dark grey.Its chemical property torpescence, corrosion-resistant, it is difficult to reaction with acid, alkali etc..The features such as the two-dimensional structure having because of it and conduction, heat conduction, lubrication, high temperature resistant, stable chemical performance so that it is be widely used in the fields such as metallurgy, machinery, chemical industry.The pure person of graphite content is few, often containing various impurity.And along with the development of technology, need to improve further the purity of graphite.
At present, graphite purification mainly includes chemical purification and two kinds of methods of physical purification.Wherein, chemical purification includes acid-base method, hydrogen fluoride and chlorinating roasting.Chemical purification is to utilize graphite acid and alkali resistance, erosion-resisting character, processes graphite concentrate with acid, alkali, makes impurity dissolve, be washed out, improves concentrate grade.Chemical purification can obtain the high-carbon graphite that grade is 99%.Chemical purification has multiple method, and what domestic application was the widest is sodium hydroxide high-temperature melting method.This, though technique is more advanced, but there is also that water consumption is big, graphite runs off many, productivity ratio is relatively low, and alkali consumption is big, and the deficiency such as the waste liquor contamination environment of discharge.
Physical purification i.e. high temperature purification, utilizes the resistant to elevated temperatures character of graphite, is placed in electric furnace, isolation air heating, makes ash (i.e. impurity) vapor away, thus improves concentrate grade.High temperature purification typically can obtain the high purity graphite that grade is 99.9%, and this purity can not meet the most far away the demand of high-grade, precision and advanced industry, and this is just badly in need of the graphite improving process means to obtain higher purity.
Summary of the invention
The invention aims to solve in prior art, graphite purifying device assembling complexity, the problem that refining effect is the best, and then a kind of method purifying graphite and device thereof that device energy-wasting is low, it is rapid to heat up and refining effect is good is provided.
The technical scheme is that a kind of device purifying graphite, including graphite charging aperture 1, feed pipe 2, resistance furnace 3, body of heater 4, evacuation hole 5, venthole the 6, first cooling chamber 7, noble gas injection pump the 8, second cooling chamber 9, discharging opening 10, plasma torch 12, discharge nozzle 14；
Wherein, graphite charging aperture 1 is connected with one end of feed pipe 2, resistance furnace 3 is located at outside the tube wall of feed pipe 2, feed pipe 2 other end is connected with body of heater 4 top, one sidewall of body of heater 4 has an evacuation hole 5, evacuation hole 5 is connected with vacuum pump, the opposite side of body of heater 4 has the venthole 6 being connected with the first cooling chamber 7, body of heater 4 is additionally provided with a noble gas injection pump 8 on sidewall, noble gas injection pump 8 is positioned at the lower section of the first cooling chamber 7, the second cooling chamber 9 it is provided with bottom body of heater 4, second cooling chamber 9 is connected by discharge nozzle 14 with the inner chamber of body of heater 4, plasma torch 12 is arranged on body of heater 4, the spout of plasma torch 12 communicates with the inner chamber of body of heater 4.
Further, feed pipe 2 is internal is provided with feed worm 21, is provided with conveying screw rod 11 in discharge nozzle 14.
Further, it is equipped with cold water pipe outside the first cooling chamber 7 and the second cooling chamber 9.
The invention still further relates to a kind of utilize said apparatus purify graphite method, comprise the steps:
1) graphite raw material is put in feed pipe 2 by graphite charging aperture 1; close all of valve on body of heater 4 and be at air-tight state; vacuum pump is connected at evacuation hole 5; by vacuum state in body of heater 4; then being passed through protective gas at noble gas injection pump 8, in making body of heater 4, pressure returns to atmospheric pressure；
2) opening resistance furnace 3 makes its temperature be increased to 1000 DEG C to 2000 DEG C, with the graphite raw material in heating feed pipe 2, rotate feed worm 21 and open the air pump at venthole 6, plasma torch 12 is lighted a fire simultaneously, the gas produced after making graphite be heated enters in the first cooling chamber 7 and cools down, and graphite solid falls in body of heater 4, then by crossing high-temperature plasma flame stream, fall into the bottom of the second cooling chamber 9；
3) rear graphite to be purified is opened after the second cooling chamber 9 cooling and is taken the graphite that discharging opening 10 taking-up purifies.
Further, the heating-up temperature of resistance furnace 3 is 1500 DEG C.
Further, the flame passes temperature of plasma torch 12 ejection is 3000 DEG C.
Further, the gas being passed through in noble gas injection pump 8 is argon or nitrogen.
There is advantages that the method that the present invention mainly have employed plasma flame heating, utilize the plasma high temperature more than 3000 DEG C, make the impurity in graphite raw material gasify, thus reach to purify the purpose of graphite.In assembly of the invention, first graphite powder is preheated at 1500 DEG C, isolate the metal impurities of gasification, be re-fed into having in the plasma flame stream of excessive temperature and directly heat so that other impurity fully gasify.Using above-mentioned step heating, the method progressively separating impurity improves heat utilization efficiency, and the purity of obtained graphite is high.Graphite raw material mass content of carbon after primary purification i.e. can reach 99.99%.To sum up, the method simple possible of the present invention, device energy-wasting is low, intensification is rapid and refining effect is good.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention purifies the device of graphite.
In apparatus of the present invention, each component names and label are as follows:
Graphite charging aperture 1, feed pipe 2, resistance furnace 3, body of heater 4, evacuation hole 5, venthole the 6, first cooling chamber 7, noble gas injection pump the 8, second cooling chamber 9, discharging opening 10, conveying screw rod 11, plasma torch 12, discharge nozzle 14, feed worm 21.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described:
Referring to Fig. 1, the device purifying graphite of the present invention includes graphite charging aperture 1, feed pipe 2, resistance furnace 3, body of heater 4, evacuation hole 5, venthole the 6, first cooling chamber 7, noble gas injection pump the 8, second cooling chamber 9, discharging opening 10, plasma torch 12, discharge nozzle 14；Wherein, graphite charging aperture 1 is connected with one end of feed pipe 2, resistance furnace 3 is located at outside the tube wall of feed pipe 2, feed pipe 2 other end is connected with body of heater 4 top, one sidewall of body of heater 4 has an evacuation hole 5, evacuation hole 5 is connected with vacuum pump, the opposite side of body of heater 4 has the venthole 6 being connected with the first cooling chamber 7, body of heater 4 is additionally provided with a noble gas injection pump 8 on sidewall, noble gas injection pump 8 is positioned at the lower section of the first cooling chamber 7, the second cooling chamber 9 it is provided with bottom body of heater 4, second cooling chamber 9 is connected by discharge nozzle 14 with the inner chamber of body of heater 4, plasma torch 12 is arranged on body of heater 4, the spout of plasma torch 12 communicates with the inner chamber of body of heater 4, the upper end of plasma torch 12 is provided with work gas air inlet.Feed pipe 2 is internal is provided with feed worm 21, is provided with conveying screw rod 11 in discharge nozzle 14.It is equipped with cold water pipe outside first cooling chamber 7 and the second cooling chamber 9.
The Double-layer vertical hollow circular cylinder structure that body of heater 4 is made up of liner and shell, shell uses rustless steel to be made, and liner is one layer of graphite brick being attached on outer casing inner wall.
The method purifying graphite of the present invention, comprises the steps:
1) graphite raw material is put in feed pipe 2 by graphite charging aperture 1; close all of valve on body of heater 4 and be at air-tight state; vacuum pump is connected at evacuation hole 5; by vacuum state in body of heater 4; then at noble gas injection pump 8, it is passed through protective gas; optional argon or nitrogen, in making body of heater 4, pressure returns to atmospheric pressure；
2) opening resistance furnace 3 makes its temperature be increased to 1000 DEG C to 2000 DEG C, and to heat the graphite raw material in feed pipe 2, preferable temperature is 1500 DEG C.Rotating feed worm 21 and open the air pump at venthole 6, plasma torch 12 is lighted a fire simultaneously.The gas that graphite produces after being heated enters in the first cooling chamber 7 and cools down, and graphite solid falls in body of heater 4 after the flame passes calcination that plasma torch 12 sprays, opening conveying screw rod 11 again makes it fall into the bottom of the second cooling chamber 9, and the flame passes temperature of plasma torch 12 ejection is preferably 3000 DEG C；
3) rear graphite to be purified is opened after the second cooling chamber 9 cooling and is taken the graphite that discharging opening 10 taking-up purifies.
Effect: the present invention mainly have employed the method for plasma flame heating, utilizes the plasma high temperature more than 3000 DEG C, makes the impurity in graphite raw material gasify, thus reach to purify the purpose of graphite.In assembly of the invention, first graphite powder is preheated at a temperature of about 1500 DEG C, isolate the metal impurities of gasification, be re-fed into having in the plasma flame stream of excessive temperature and directly heat so that other impurity fully gasify.Using above-mentioned step heating, the method progressively separating impurity improves heat utilization efficiency, and the purity of obtained graphite is high.Graphite raw material mass content of carbon after primary purification i.e. can reach 99.999%.To sum up, the method simple possible of the present invention, device energy-wasting is low, intensification is rapid and refining effect is good.
Foregoing is only presently preferred embodiments of the present invention; it is not intended to limit embodiment of the present invention; those of ordinary skill in the art are according to the central scope of the present invention and spirit; corresponding flexible or amendment can be carried out very easily, therefore protection scope of the present invention should be as the criterion with the protection domain required by claims.
Claims (8)
1. the device purifying graphite, it is characterized in that, including graphite charging aperture 1, feed pipe 2, resistance furnace 3, body of heater 4, evacuation hole 5, venthole the 6, first cooling chamber 7, noble gas injection pump the 8, second cooling chamber 9, discharging opening 10, plasma torch 12 and discharge nozzle 14；
Wherein, graphite charging aperture 1 is connected with one end of feed pipe 2, resistance furnace 3 is located at outside the tube wall of feed pipe 2, feed pipe 2 other end is connected with body of heater 4 top, one sidewall of body of heater 4 has an evacuation hole 5, evacuation hole 5 is connected with vacuum pump, the opposite side of body of heater 4 has the venthole 6 being connected with the first cooling chamber 7, body of heater 4 is additionally provided with a noble gas injection pump 8 on sidewall, noble gas injection pump 8 is positioned at the lower section of the first cooling chamber 7, the second cooling chamber 9 it is provided with bottom body of heater 4, second cooling chamber 9 is connected by discharge nozzle 14 with the inner chamber of body of heater 4, plasma torch 12 is arranged on body of heater 4, the spout of plasma torch 12 communicates with the inner chamber of body of heater 4.
The device of purification graphite the most according to claim 1, it is characterised in that feed pipe 2 is internal is provided with feed worm 21, is provided with conveying screw rod 11 in discharge nozzle 14.
The device of purification graphite the most according to claim 1, it is characterised in that be equipped with cold water pipe outside the first cooling chamber 7 and the second cooling chamber 9.
The device of purification graphite the most according to claim 2, it is characterised in that the Double-layer vertical hollow circular cylinder structure that body of heater 4 is made up of liner and shell, shell uses rustless steel to be made, and liner is one layer of graphite brick being attached on outer casing inner wall.
5. one kind utilizes described in any one of claim 1 to 4 device purify graphite method, it is characterised in that comprise the steps:
1) graphite raw material is put in feed pipe 2 by graphite charging aperture 1; close all of valve on body of heater 4 and be at air-tight state; vacuum pump is connected at evacuation hole 5; by vacuum state in body of heater 4; then being passed through protective gas at noble gas injection pump 8, in making body of heater 4, pressure returns to atmospheric pressure；
2) opening resistance furnace 3 makes its temperature be increased to 1000 DEG C to 2000 DEG C, with the graphite raw material in heating feed pipe 2, rotate feed worm 21 and open the air pump at venthole 6, plasma torch 12 is lighted a fire simultaneously, the gas produced after making graphite be heated enters in the first cooling chamber 7 and cools down, and graphite solid falls in body of heater 4, then by crossing high-temperature plasma flame stream, fall into the bottom of the second cooling chamber 9；
3) rear graphite to be purified is opened after the second cooling chamber 9 cooling and is taken the graphite that discharging opening 10 taking-up purifies.
The method of purification graphite the most according to claim 5, it is characterised in that the heating-up temperature of resistance furnace 3 is 1500 DEG C.
The method of purification graphite the most according to claim 6, it is characterised in that the flame passes temperature of plasma torch 12 ejection is 3000 DEG C.
The method of purification graphite the most according to claim 7, it is characterised in that the gas being passed through in noble gas injection pump 8 is argon or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610293532.8A CN105819436A (en) | 2016-04-28 | 2016-04-28 | Method and device for purifying graphite |
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| CN201610293532.8A CN105819436A (en) | 2016-04-28 | 2016-04-28 | Method and device for purifying graphite |
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| CN105819436A true CN105819436A (en) | 2016-08-03 |
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| CN201610293532.8A Pending CN105819436A (en) | 2016-04-28 | 2016-04-28 | Method and device for purifying graphite |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107601495A (en) * | 2017-10-25 | 2018-01-19 | 佛山市蓝瑞欧特信息服务有限公司 | Graphite purifying device |
| CN108675293A (en) * | 2018-07-02 | 2018-10-19 | 凯盛石墨碳材料有限公司 | A kind of graphite high temperature purification device |
| CN109437186A (en) * | 2018-11-23 | 2019-03-08 | 湖南顶立科技有限公司 | A kind of graphite powder and its denitrification process |
| CN111333065A (en) * | 2020-04-05 | 2020-06-26 | 黑龙江工业学院 | Plasma injection type high-purity graphite purification device |
| CN111409965A (en) * | 2020-03-19 | 2020-07-14 | 北京矿冶科技集团有限公司 | Heat treatment furnace feeding bin, control method thereof and heat treatment furnace system |
| CN111439749A (en) * | 2020-04-06 | 2020-07-24 | 黑龙江工业学院 | Purification method for injecting discharge plasma active particles into graphite |
| CN111547713A (en) * | 2020-06-16 | 2020-08-18 | 柯良节 | Production equipment and preparation method of high-purity graphene film |
| CN111661845A (en) * | 2020-06-22 | 2020-09-15 | 柯良节 | Equipment and method for purifying graphite powder by high-temperature injection |
| CN114291815A (en) * | 2022-01-07 | 2022-04-08 | 宝丰县五星石墨有限公司 | High-purity graphite purification system |
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| US4435375A (en) * | 1981-03-27 | 1984-03-06 | Shohei Tamura | Method for producing a carbon filament and derivatives thereof |
| CN102557019A (en) * | 2011-12-27 | 2012-07-11 | 黑龙江科技学院 | Method and device for producing high-purity natural graphite |
| CN102745681A (en) * | 2012-07-19 | 2012-10-24 | 武汉工程大学 | Method and device for purifying graphite |
| KR101504247B1 (en) * | 2013-08-07 | 2015-03-23 | 주식회사 윈테크이엔지 | Apparatus for purification of graphite using a microwave plasma and the method for purification thereof |
| CN105384167A (en) * | 2015-12-30 | 2016-03-09 | 株洲弗拉德科技有限公司 | Powdery graphite continuous high-heat treatment production line |
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2016
- 2016-04-28 CN CN201610293532.8A patent/CN105819436A/en active Pending
Patent Citations (5)
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| US4435375A (en) * | 1981-03-27 | 1984-03-06 | Shohei Tamura | Method for producing a carbon filament and derivatives thereof |
| CN102557019A (en) * | 2011-12-27 | 2012-07-11 | 黑龙江科技学院 | Method and device for producing high-purity natural graphite |
| CN102745681A (en) * | 2012-07-19 | 2012-10-24 | 武汉工程大学 | Method and device for purifying graphite |
| KR101504247B1 (en) * | 2013-08-07 | 2015-03-23 | 주식회사 윈테크이엔지 | Apparatus for purification of graphite using a microwave plasma and the method for purification thereof |
| CN105384167A (en) * | 2015-12-30 | 2016-03-09 | 株洲弗拉德科技有限公司 | Powdery graphite continuous high-heat treatment production line |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107601495A (en) * | 2017-10-25 | 2018-01-19 | 佛山市蓝瑞欧特信息服务有限公司 | Graphite purifying device |
| CN108675293A (en) * | 2018-07-02 | 2018-10-19 | 凯盛石墨碳材料有限公司 | A kind of graphite high temperature purification device |
| CN109437186A (en) * | 2018-11-23 | 2019-03-08 | 湖南顶立科技有限公司 | A kind of graphite powder and its denitrification process |
| CN111409965A (en) * | 2020-03-19 | 2020-07-14 | 北京矿冶科技集团有限公司 | Heat treatment furnace feeding bin, control method thereof and heat treatment furnace system |
| CN111333065A (en) * | 2020-04-05 | 2020-06-26 | 黑龙江工业学院 | Plasma injection type high-purity graphite purification device |
| CN111333065B (en) * | 2020-04-05 | 2024-05-31 | 黑龙江工业学院 | Plasma injection type high-purity graphite purifying device |
| CN111439749A (en) * | 2020-04-06 | 2020-07-24 | 黑龙江工业学院 | Purification method for injecting discharge plasma active particles into graphite |
| CN111439749B (en) * | 2020-04-06 | 2022-12-27 | 黑龙江工业学院 | Purification method for injecting discharge plasma active particles into graphite |
| CN111547713A (en) * | 2020-06-16 | 2020-08-18 | 柯良节 | Production equipment and preparation method of high-purity graphene film |
| CN111661845A (en) * | 2020-06-22 | 2020-09-15 | 柯良节 | Equipment and method for purifying graphite powder by high-temperature injection |
| CN114291815A (en) * | 2022-01-07 | 2022-04-08 | 宝丰县五星石墨有限公司 | High-purity graphite purification system |
| CN114291815B (en) * | 2022-01-07 | 2023-12-19 | 五星新材科技有限公司 | High-purity graphite purification system |
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Application publication date: 20160803 |
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