CN107651678A - A kind of powder heat-treatment furnace - Google Patents
A kind of powder heat-treatment furnace Download PDFInfo
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- CN107651678A CN107651678A CN201610591839.6A CN201610591839A CN107651678A CN 107651678 A CN107651678 A CN 107651678A CN 201610591839 A CN201610591839 A CN 201610591839A CN 107651678 A CN107651678 A CN 107651678A
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- powder
- crucible
- treatment furnace
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- rotating disc
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses a kind of powder heat-treatment furnace.The powder heat-treatment furnace includes the furnace shell with closed furnace, the crucible being arranged in closed furnace, and is arranged on the insulation cover on furnace shell top；The insulation cover is provided with charging aperture, and the furnace shell bottom is provided with discharging opening；Induction coil is provided between the crucible outer wall and furnace shell inwall；The crucible internal upper part is provided with rotating disc, and the rotary shaft being fixedly linked through insulation cover and rotating disc.The present invention realizes the continuous production of powder material, and good energy-conserving effect, and the efficiency of heating surface is high.
Description
Technical field
The present invention relates to a kind of powder heat-treatment furnace, belongs to material graphitization apparatus field.
Background technology
With the development of new energy power, lithium ion battery increasingly investee favors, carbon negative pole material as lithium from
Its market of the key components of sub- battery also faces eruptive growth.A committed step in carbon negative pole material production process
It is exactly graphitization purification.Graphitization refers to that carbon atom is changed into six regularly arranged side's planes by mixed and disorderly irregular alignment under high temperature
Network structure, i.e. graphite microcrystalline structure, the purpose is to obtain the performance of highly conductive graphite, high heat conduction, corrosion-resistant, rub resistance etc..
Graphitization temperature may be up to 3100 DEG C, and temperature is higher, and graphite microcrystalline structure development is more perfect, and degree of graphitization improves；Simultaneously such as
At this high temperature, the atom of other low melting points is discharged in gaseous form, so as to realize the purification of material.For improving graphite
The equipment of change degree or purity we be referred to as graphitizing furnace, it is necessary to graphitization processing material also include CNT, nuclear graphite, day
Right graphite and Delanium etc..
Acheson furnace is the stove that the first realizes the production of high-volume high temperature graphitization, is characterized in of large quantities, but by
It is Open architecture in it, tail gas is resistance heating using substantial amounts of filler coke without focusing on, so as to cause high energy consumption,
Pollute environment, non-uniform temperature.Though there is the interior string electrode carbonization stove by technological improvement, high energy consumption, pollution is big, and temperature is not
Uniformly the problem of, is not resolved.Patent CN201010108189.8 discloses a kind of vertical high temperature continuous graphitizing furnace, the above
Bottom electrode is to connecting dc source, and using material as resistance heating, its shortcoming is high energy consumption, and the efficiency of heating surface is low.There is intermediate frequency again afterwards
Graphitizing furnace is sensed, as Chinese Patent Application No. CN201410666556.4 discloses a kind of vertical continuous sensing high temperature graphitization
Stove, Chinese Patent Application No. CN201410016297.0 disclose a kind of Super-high temperature graphitization treatment equipment, Chinese patent application
Number CN201210487294.6 discloses a kind of continuous high-temperature graphite purification equipment, Chinese Patent Application No.
CN200910042891.6 discloses a kind of graphite purification and graphitizable high temperature vertical continuous induction heating furnace, Chinese patent application
Number CN200920009018.2 discloses a kind of continuous vertical type medium-frequency high temperature high purity graphite production equipment, is characterized in the efficiency of heating surface
Height, energy consumption is low, but the thermal conductivity factor of powder is relatively low, so as to cause the temperature homogeneity of material in stove poor, the performance of product
It is uneven.
Traditional acheson furnace energy consumption is big, and pollution is big, and heating-up temperature is uneven；Existing vertical continuous graphitizing furnace has electricity
Pole DC heating stove and induction heater, it mostly realizes continuous production using top-down flow of material, but powder
The heat conductivility of material is poor, causes that burner hearth internal temperature is uneven, and properties of product are very different.
The content of the invention
In order to solve because non-uniform temperature causes the very different situation of properties of product, the present invention is intended to provide a kind of powder
Body heat treatment furnace, the high temperature furnace can realize the continuous production of powder material, and good energy-conserving effect, efficiency of heating surface height.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of powder heat-treatment furnace, including the furnace shell with closed furnace, the crucible being arranged in closed furnace, and be arranged on
The insulation cover on furnace shell top；The insulation cover is provided with charging aperture, and the furnace shell bottom is provided with discharging opening；It is structurally characterized in that, described
Induction coil is provided between crucible outer wall and furnace shell inwall；The crucible internal upper part is provided with rotating disc, and through insulation cover with
The rotary shaft that rotating disc is fixedly linked；It is preferred that rotating disc lower surface is provided with stirring projection；It is preferred that the crucible is graphite crucible.
Thus, powder is heated by induction coil, the efficiency of heating surface is high, and saves, and rotating disc stirs work(to realizing
Can so that powder be heated more uniformly, so as to improve product quality.
According to an embodiment of the invention, further optimization can also be made to the present invention, below the skill to be formed after optimization
Art scheme：
Overflowed in order to facilitate foreign gas, the rotating disc and the interior of rotary shaft are equipped with interconnected exhaust passage.Meanwhile
Exhaust passage doubles as thermometric passage, avoids individually opening up thermometer hole, so as to improve the heat insulation effect of high temperature furnace.
Preferably, the rotating disc lower end is equipped with multiple electrodes positioned at crucible internal upper part；The present invention passes through sensing heating
Principle material is heated, upper electrode can also be inductively heated as thermal source, can fully be stirred when electrode rotary
Powder material is mixed, improves temperature homogeneity and the efficiency of heating surface.Connect successively it is preferred that being provided with the rotary shaft, rotating disc and electrode
Logical exhaust passage, it is convenient in time to discharge foreign gas.
As a kind of specific structure type, the electrode is tubular structure；The lower end of preferred electrode is provided with oblique through hole,
Oblique through hole connects with the exhaust passage of electrode, easily can discharge foreign gas by exhaust passage.
, it is surprising that electrode also heats high temperature furnace at work.It is real in order to realize electrode while heated target
Existing heated by electrodes and the double effectses of induction coil heating, further improve the efficiency of heating surface of high temperature furnace, the electrode and sensing
The distance between coil is 30mm-300mm；It is preferred that the distance between the electrode and induction coil are 50mm-200mm.
Preferably, the rotary shaft, rotating disc and electrode are that graphite material is made.
In order to improve the service life of crucible, heat-insulation layer is provided between the crucible outer wall and induction coil.
In order to improve the uniformity of heating-up temperature, while convenient stirring powder, so as to which foreign gas be discharged, the rotation
The external part of axle is connected with drive device；It is preferred that the rotating speed of rotary shaft is not higher than 6r/min, more preferably 0-3r/min.
Preferably, the burner hearth is cylindric；It is preferred that the charging aperture and discharging opening are arranged on the axial line of burner hearth.
Preferably, the powder is natural flake graphite powder, amorphous graphite, electrographite powder, carbon negative pole material, tar
At least one of carbon, bitumencarb, resin carbon, coal-based carbon.What deserves to be explained is the ratio between each composition is not required, arbitrarily
Ratio mixes.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, heated, efficiency high, saved using induction heating mode.Roof of the furnace is provided with electrode, can be same during work
It is heated, as multi-point heat sources, improves furnace body temperature uniformity.Multiple electrodes can also be inductively heated, as thermal source to powder
Body material is heated, and the high-temperature region time that material passes through is longer, and heating is more abundant.
2nd, multi-electrode can be rotated, and overflowing for foreign gas is more beneficial for while stirring material and improving temperature homogeneity
Go out, be on the one hand heated material more uniform, foreign gas is more prone to discharge, and on the other hand can adjust input and output material
Speed, prevent that the not smooth caused jam situation of Flow of Goods and Materials occurs in stove..
3rd, cleverly using electrode area design exhaust passage, exhaust passage when can be overflowed as foreign gas, nothing
Additional discharge duct is needed, reduces the loss of heat.
4th, whole crucible is placed in stainless steel closed furnace, can not only be reduced the loss of heat but also can be completely cut off outside sky
Gas.
5th, using heating in medium frequency, no low-voltage, high-current, it is not necessary to lower pressure rectifier, reduce transformer copper loss and consumed with iron loss,
Its electrical heating efficiency improves 50%.
Brief description of the drawings
Fig. 1 is the structure principle chart of one embodiment of the invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the present invention can be mutually combined.For sake of convenience, hereinafter as occurred
" on ", " under ", "left", "right" printed words, only represent that the upper and lower, left and right direction with accompanying drawing in itself is consistent, do not act limiting to structure
It is set for using.
A kind of powder heat-treatment furnace, as shown in figure 1, comprising furnace shell 11, the graphite crucible 4 in burner hearth, graphite crucible 4
The rotating disc 2 on top, the electrode 3 being connected with rotating disc 2 and rotary shaft 1, phase is provided with rotary shaft 1, rotating disc 2 and electrode 3
The passage of connection, can be as the exhaust passage of foreign gas, and rotary shaft 1 is through insulation cover 10 and exhausted therewith by ceramic sleeve
Edge, one end outside burner hearth can connect tumbler, in addition to the heat-insulation layer 5 of the outer layer of crucible 4 and induction coil 6 and
The cooling zone 7 and receiving warehouse 8 of feeding warehouse 9 positioned at gating location and the discharging opening positioned at bottom.Material is slow by feeding warehouse 9
Into in crucible 4, electrode 3 rotates stirring thing material under external impetus, on the one hand makes the temperature in material more uniform, is advantageous to
Foreign gas in material is overflowed, and is discharged by the passage on electrode 3, and another aspect electrode 3 is inductively heated simultaneously, due to
Fixed thermal conductivity factor is far longer than the thermal conductivity factor of powder, and multiple electrodes heat as thermal source to powder material.
Described rotary shaft, rotating disc and electrode is graphite material.The rotating disc and rotary shaft have phase after connection
Logical duct.
The electrode is tubular structure, and quantity is not less than 2, and electrode lower end has the oblique through hole uniformly arranged.It is described
The distance between electrode and induction coil are arranged to 30-300mm, and preferential distance is 50-200mm.The electrode rotary speed is not
Higher than 6r/min, preferably 0-3r/min.
The charging aperture and discharging opening are located on burner hearth axle center.
The powder is natural flake graphite powder, amorphous graphite, electrographite powder, carbon negative pole material, tar carbon, pitch
At least one of carbon, resin carbon, coal-based carbon.
The content that above-described embodiment illustrates should be understood to that these embodiments are only used for being illustrated more clearly that the present invention, without
For limiting the scope of the present invention, after the present invention has been read, the various equivalent form of values of the those skilled in the art to the present invention
Modification each fall within the application appended claims limited range.
Claims (10)
1. a kind of powder heat-treatment furnace, including the furnace shell with closed furnace（11）, the crucible that is arranged in closed furnace（4）,
And it is arranged on furnace shell（11）The insulation cover on top（10）；The insulation cover（10）Charging aperture is provided with, the furnace shell（11）Open bottom
There is discharging opening；Characterized in that, the crucible（4）Outer wall and furnace shell（11）Induction coil is provided between inwall（6）；The crucible
（4）Internal upper part is provided with rotating disc（2）, and through insulation cover（10）With rotating disc（2）The rotary shaft being fixedly linked（1）；It is preferred that
Rotating disc（2）It is raised that lower surface is provided with stirring；It is preferred that the crucible（4）For graphite crucible.
2. powder heat-treatment furnace according to claim 1, it is characterised in that the rotating disc（2）And rotary shaft（1）It is interior
It is equipped with interconnected exhaust passage.
3. powder heat-treatment furnace according to claim 1, it is characterised in that the rotating disc（2）Lower end is equipped with multiple positions
In crucible（4）The electrode of internal upper part（3）；It is preferred that the rotary shaft（1）, rotating disc（2）And electrode（3）It is interior to be provided with what is be sequentially communicated
Exhaust passage.
4. powder heat-treatment furnace according to claim 3, it is characterised in that the electrode（3）For tubular structure；It is preferred that electricity
Pole（3）Lower end be provided with oblique through hole.
5. powder heat-treatment furnace according to claim 3, it is characterised in that the electrode（3）With induction coil（6）Between
Distance be 30mm-300mm；It is preferred that the electrode（3）With induction coil（6）The distance between be 50mm-200mm.
6. the powder heat-treatment furnace according to one of claim 3-5, it is characterised in that the rotary shaft（1）, rotating disc
（2）And electrode（3）It is that graphite material is made.
7. powder heat-treatment furnace according to claim 1, it is characterised in that the crucible（4）Outer wall and induction coil（6）
Between be provided with heat-insulation layer（5）.
8. powder heat-treatment furnace according to claim 1, it is characterised in that the rotary shaft（1）External part and driving
Device is connected；It is preferred that rotary shaft（1）Rotating speed be not higher than 6r/min, more preferably 0-3r/min.
9. powder heat-treatment furnace according to claim 1, it is characterised in that the burner hearth is cylindric；It is preferred that it is described enter
Material mouth and discharging opening are arranged on the axial line of burner hearth.
10. powder heat-treatment furnace according to claim 1, it is characterised in that the powder is natural flake graphite powder, soil
At least one of shape graphite, electrographite powder, carbon negative pole material, tar carbon, bitumencarb, resin carbon, coal-based carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591839.6A CN107651678B (en) | 2016-07-26 | 2016-07-26 | Powder heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610591839.6A CN107651678B (en) | 2016-07-26 | 2016-07-26 | Powder heat treatment furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107651678A true CN107651678A (en) | 2018-02-02 |
| CN107651678B CN107651678B (en) | 2023-08-11 |
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ID=61126961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610591839.6A Active CN107651678B (en) | 2016-07-26 | 2016-07-26 | Powder heat treatment furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN107651678B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562973A (en) * | 2019-09-25 | 2019-12-13 | 大连宏光锂业股份有限公司 | Loading and unloading type intermediate frequency furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050175952A1 (en) * | 2002-04-09 | 2005-08-11 | Tokyo Electron Limited | Vertical heat treating equipment |
| CN102311112A (en) * | 2010-07-09 | 2012-01-11 | 武建国 | Furnace for graphitization and corresponding method for graphitization |
| CN202968124U (en) * | 2012-12-03 | 2013-06-05 | 江西新卡奔科技有限公司 | Powder graphitizing device for preparing high-purity graphite |
| US20140127124A1 (en) * | 2011-05-31 | 2014-05-08 | IHI (IHI Corporation) | Graphitization furnace and method for producing graphite |
| CN104556024A (en) * | 2015-02-10 | 2015-04-29 | 新郑市东升炭素有限公司 | Vertical artificial graphite scrap treatment device and treatment process |
| CN204490511U (en) * | 2015-02-10 | 2015-07-22 | 新郑市东升炭素有限公司 | The horizontal broken artificial graphite treatment facility of novel vertical electrode |
-
2016
- 2016-07-26 CN CN201610591839.6A patent/CN107651678B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050175952A1 (en) * | 2002-04-09 | 2005-08-11 | Tokyo Electron Limited | Vertical heat treating equipment |
| CN102311112A (en) * | 2010-07-09 | 2012-01-11 | 武建国 | Furnace for graphitization and corresponding method for graphitization |
| US20140127124A1 (en) * | 2011-05-31 | 2014-05-08 | IHI (IHI Corporation) | Graphitization furnace and method for producing graphite |
| CN202968124U (en) * | 2012-12-03 | 2013-06-05 | 江西新卡奔科技有限公司 | Powder graphitizing device for preparing high-purity graphite |
| CN104556024A (en) * | 2015-02-10 | 2015-04-29 | 新郑市东升炭素有限公司 | Vertical artificial graphite scrap treatment device and treatment process |
| CN204490511U (en) * | 2015-02-10 | 2015-07-22 | 新郑市东升炭素有限公司 | The horizontal broken artificial graphite treatment facility of novel vertical electrode |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562973A (en) * | 2019-09-25 | 2019-12-13 | 大连宏光锂业股份有限公司 | Loading and unloading type intermediate frequency furnace |
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| CN107651678B (en) | 2023-08-11 |
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