CN205472678U - Continuous type direct current ultra -temperature graphitization electric stove - Google Patents
Continuous type direct current ultra -temperature graphitization electric stove Download PDFInfo
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- CN205472678U CN205472678U CN201620168334.4U CN201620168334U CN205472678U CN 205472678 U CN205472678 U CN 205472678U CN 201620168334 U CN201620168334 U CN 201620168334U CN 205472678 U CN205472678 U CN 205472678U
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- furnace
- direct current
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- graphite
- stove
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Abstract
The utility model provides a continuous type direct current ultra -temperature graphitization electric stove, belongs to metallurgical engineering non -metallic material preparation technical field. Continuous type direct current ultra -temperature graphitization electric stove's characterized in that: two graphite electrode meet with DC power supply to the symmetry is arranged on the furnace body central line, and in its bottom entry stove body, depth of inter fit is 12~23 of stove body height, dust collecting device is located the top of whole equipment, stove body bottom opening part is linked together with stove bottom cooling arrangement, stove bottom cooling arrangement is direct and discharging device is corresponding, discharging device is located stove bottom cooling arrangement below. Utilize this equipment to carry out artificial graphite production, its fix carbon content is more than 99.95%, and the average resistivity is less than 100 mu omega m, and the real density is greater than 2.20gcm3, and each index all reaches high -purity artificial graphite's requirement.
Description
Technical field
This utility model relates to metallurgical engineering nonmetallic materials preparing technical field, is specifically related to a kind of continuous
Formula direct current superhigh temperature graphitizing electric furnace and using method thereof.
Background technology
Graphite has the properties such as excellent electrical and thermal conductivity, wearability, lubricity, thermal shock resistance,
And high temperature resistant, stable chemical nature, thus increasingly it is widely used in atomic energy, automobile, space flight
Technology, metallurgy, industries like chemical engineering and machinery.Graphite has become indispensable in a kind of modern industrial technology
Few nonmetallic materials.The height of graphite purity decides use characteristic and performance, the graphite of graphite material
Purity is the highest, and using value is the highest.Along with the development of science and technology, the purity of general graphite products
Cannot meet the requirement to high purity graphite of some industry, phosphorus content high purity graphite more than 99.95%
Apply the most extensive.In the new-energy automobile field that country greatly develops, high-purity bulk artificial graphite is made
For the primary raw material of electrokinetic cell, also will play an important role.Thus, the exploitation of high purity graphite, life
Produce and become graphite material to one of field wider, deeper development problem of materials being badly in need of solution.
At present graphite purification method be broadly divided into floatation, acid-base method, hydrogen fluoride, chlorinating roasting and
High temperature method five kinds.Purity after wherein floatation purifies is the highest, is generally used for preliminary purification.And acid-base method,
Hydrogen fluoride and chlorinating roasting can produce substantial amounts of waste water or waste gas when preparing high purity graphite, and environment is dirty
Contaminating big and the most disposable, the input of later stage environmental protection link can be greatly increased cost.Compare above method, high
Warming therapy less pollution, and the product of relatively high carbon content can be obtained.High temperature method uses Acheson's stone at present
Mo Hualu and internal thermal tandem graphitization furnace two kind equipment, and using this two kind equipment to produce Delanium
In technical process, there is following unavoidable shortcoming: one, batch production, production process almost without
Method realizes continuous operations；Two, product energy consumption is higher, general minimum all at more than 3200kwh/t；Three,
In-furnace temperature skewness, therefore degree of graphitization is not sufficiently stable, and product quality is very different；Four,
The resistance material added during production and quartz sand will cause in bulk graphite products containing more impurity.These lack
It is unstable that point eventually results in bulk graphite products quality, and production cost is higher.
Utility model content
The problem existed for existing Delanium production method, this utility model provides a kind of continuous way straight
Stream superhigh temperature graphitizing electric furnace and using method.
This technology uses a kind of continuous way direct current superhigh temperature graphitizing electric furnace to carry out the life of high-purity Delanium
Producing, this kind of electric furnace includes feeding device 1, feed hopper 2, graphite electrode 3, dust collect plant 4, furnace body
5, furnace bottom cooling device 6, drawing mechanism 7, finished product storage tank 8 and screw conveyor 10, wherein:
Feeding device 1 is placed in the dead ahead appropriate location of furnace body 5, the upper end of feeding device 1 and helical feed
Equipment 10 is connected；The end of screw conveyor 10 is placed on feed hopper 2；Feed hopper 2 is placed in
The surface of furnace body 5, exit, its underpart is joined directly together logical with furnace body 5；Furnace body 5 is by steel plate
Forming with liner, liner is clay brick；Copper bar wire is passed through on the top of two size graphite electrodes 3 of the same race
Being connected with power supply, and be fixed on the framework of furnace body 5 by electrode holde, stove is inserted in its lower end
Among body 5；Dust collect plant 4 is positioned at the top of whole equipment, and dust collect plant 4 is provided with dust and divides
Pipeline 13, and be connected with dust pelletizing system；It is connected with furnace bottom cooling device 6 at furnace body 5 bottom opening
Logical, furnace bottom cooling device 6 is directly and drawing mechanism 7 is corresponding；Drawing mechanism 7 is positioned at furnace bottom cooling and sets
The lower section of standby 6 also extends to finished product storage tank 8 top by lifting device.
Special feature also resides in the graphite electrode 3 of this equipment and uses DC source to be powered.
Special feature also resides in two root graphite electrodes 3 symmetry arrangement on body of heater centrage, and it is inserted from furnace roof
Entering the degree of depth in furnace body 5 is furnace body 5 1/2～2/3 highly.
Special feature also resides in the 3-6 that the distance between two root graphite electrodes 3 is graphite electrode 3 diameter itself
Times.
Special feature also resides in the bore being connected with furnace body 5 of furnace bottom cooling device 6 with two graphite
The high-temperature region horizontal cross-section length produced between electrode 3 is equal.
This utility model method is carried out with aforesaid continuous way direct current superhigh temperature graphitizing electric furnace for capital equipment
The production of bulk artificial graphite, its production application process include raw material enter stove, drying and calcining, graphitization,
Cooling down 4 process of coming out of the stove, concrete operations are as follows:
(1) by the petroleum coke got ready or anthracite etc. by such as the continuous way direct current superelevation fire stons of previous designs
The feeding device 1 of inkization electric furnace and feed hopper 2 are sent in furnace body 5, switch on power and start to stove originally
Body 5 power transmission heat temperature raising, wherein, the petroleum coke of loading or anthracite with ash less than 0.5%, sulphur content little
In 0.5%, volatile matter less than 0.6%, true density > 2.1g/cm3, the material of granularity 1-10mm is advisable；
(2) along with temperature rising in furnace body 5, material is successively through dry, calcination stage, this stage
The steam and the volatile matter that produce will be collected and discharged by being positioned at the dust collect plant 4 at furnace body 5 top；
(3) being in line arrangement due to two root graphite electrodes 3, material such as petroleum coke etc. has electric conductivity, electricity
After the energising of pole, cold petroleum coke starts conduction, produces resistance heat, and under production status, current convergence is at two
Flow between electrode, near two graphite electrode 3 lines, one can be formed in interval there is certain altitude
3000 DEG C～3500 DEG C of high-temperature regions, material enters into 3000 DEG C～3500 DEG C high formed between two graphite electrodes 3
Behind warm area top, temperature rises to 3000 DEG C and continuous decrease, is detained 1.5～2.5 hours in high temperature section,
Completing graphitization, be then discharged out, as do not discharged in time, temperature can persistently raise, and has potential safety hazard；
(4), after material completes graphitization, drop to furnace bottom cooling device 6 cools down, be cooled to
It is drained into discharging in drawing mechanism 7 by the discharging opening of furnace bottom cooling device 6 after 100～300 DEG C, treats that material is certainly
Finished product storage tank 8 it is sent to medium to be packed after being so cooled to room temperature.
When using continuous way direct current superhigh temperature graphitizing electric furnace of the present utility model to produce continuously, after
10～30min load material, discharge primary production, material from the charging aperture of feed hopper 2 enter into by
The discharging opening of furnace bottom cooling device 6 is drained in drawing mechanism 7 to be needed 3～4 hours altogether.
It is further to note that the bore being connected with furnace body 5 due to furnace bottom cooling device 6 when producing
With the horizontal cross-section, high-temperature region produced between two graphite electrodes 3 is apart from equal, so, material is at high temperature
Can drop to smoothly in furnace bottom cooling device after stopping 1.5～2.5 hours in district.And be filled to outside high-temperature region
Distance electrode certain distance near the region material of oven housing portion due to furnace body 5 and furnace bottom cooling device 6 phase
Opening this special construction relatively small of connection, it is impossible to drop to, in furnace bottom cooling device, stay put
Forming a heat preservation zone, the material in heat preservation zone plays the effect of heat-insulation layer always.In process of production,
Control the stability of electric current between two electrodes by controlling load, and then realize the phase in furnace high-temperature district
To stable.
Accompanying drawing explanation
Fig. 1 is continuous way direct current superhigh temperature graphitizing electric furnace schematic front view used by this utility model.
Fig. 2 is continuous way direct current superhigh temperature graphitizing electric furnace elevational schematic view used by this utility model, is also
The left view sectional schematic diagram of Fig. 1.
Fig. 3 is continuous way direct current superhigh temperature graphitizing electric furnace schematic top plan view used by this utility model.
Wherein, 1 is feeding device, and 2 is feed hopper, and 3 is graphite electrode, and 4 is dust collect plant, and 5 are
Furnace body, 6 is furnace bottom cooling device, and 7 is drawing mechanism, and 8 is finished product storage tank, and 9 is raw material storing
Storehouse, 10 screw conveyors, 11 is weighing hopper, and 12 is lifting device, and 13 is dust subtube.
Detailed description of the invention
As shown in drawings, wherein Fig. 1 is that continuous way used by this utility model is straight to embodiment of the present utility model
Stream superhigh temperature graphitizing electric furnace schematic front view.With reference to Fig. 1, this continuous way direct current superhigh temperature graphitization electricity
Stove includes that feeding device 1, feed hopper 2, graphite electrode 3, dust collect plant 4, furnace body 5, furnace bottom are cold
But equipment 6, drawing mechanism 7, finished product storage tank 8, raw material storage bin 9, screw conveyor 10, meter
Batch box 11, lifting device 12 and dust subtube 13.The concrete structure of whole stove is as utility model
Described in content, wherein feeding device 1 is positioned at furnace body 5 front, and the lower end of feeding device 1 is stored up with raw material
Feed bin 9 is connected, and the upper end of feeding device 1 is connected with screw conveyor 10；Screw conveyor
The end of 10 is placed on feed hopper 2；Feed hopper 2 is positioned at the surface of furnace body 5；Dust collect plant 4
Being positioned at the top of whole equipment, dust collect plant 4 is provided with 4 the dust subtubes 13 being arranged symmetrically with,
The end appropriateness of every dust subtube 13 bends and is directed at a certain position of furnace roof, dust collect plant 4 with remove
Dirt system is connected；Furnace bottom cooling device 6 is positioned at the underface of furnace body 5；Drawing mechanism 7 is positioned at stove
The lower section of end cooling device 6 also extends to finished product storage tank by weighing hopper 11 and lifting device 12
8 tops；Two size graphite electrodes 3 of the same race are at body of heater symmetry arrangement along lengthwise centers line, two stones
Distance between electrode ink 3 is 5 times of graphite electrode 3 diameter itself, and the top of graphite electrode 3 is passed through
Copper bar wire is connected with DC source, and is fixed on the top board of furnace body 5 by electrode holde,
Its lower end is inserted among furnace body 5, and the degree of depth of insertion is 1/2～2/3 (such as, 1/2) of furnace body 5 height.
This utility model method with aforesaid continuous way direct current superhigh temperature graphitizing electric furnace as capital equipment, day
Produce as 15t, carry out the production of bulk artificial graphite with petroleum coke for raw material, its production application process include with
Lower step:
(1) petroleum coke got ready is sent to designed by this utility model through feeding device, feed hopper
In vertical graphite electric furnace, connect DC source, graphitizing furnace is begun to warm up, wherein, petroleum coke
Ash is 0.48%, sulfur content is 0.36%, volatilization is divided into 0.57%, true density > 2.1g/cm3, point ore particle
Degree is 1-10mm (such as, 2-10mm)；
(2) rising along with in-furnace temperature, material is successively through dry, calcination stage, and this stage produces
Steam and volatile matter will be discharged by furnace roof dust-collecting equipment；
(3) material petroleum coke has electric conductivity, and after electrifying electrodes, cold petroleum coke starts conduction, produces electricity
Thermal resistance, under production status, current convergence flows between two electrodes, near electrode connecting line in interval
One 3000 DEG C～the high-temperature region of 3200 DEG C can be formed.Material declines in the high-temperature region arriving more than 3000 DEG C
It is rapidly heated and is averagely detained in high-temperature region and stop 2 hours 10 minutes, discharge after completing graphitization；
(4), after material graphitization completes, enter furnace bottom cooling device and cool down, after being cooled to 180 DEG C
Enter discharging in discharging equipment, after material naturally cools to room temperature, carry out subpackage.
When using continuous way direct current superhigh temperature graphitizing electric furnace of the present utility model to produce continuously, after
10～30min (such as, 15min) load material, a discharge primary production, and material enters from charging aperture
3～4 hours (such as, 3 hours) of average needs are discharged to discharging opening.
In production process, stove lining temperature is up to 1200 DEG C, it is achieved after steady production, to high-purity bulk
Delanium sampling chemical examination, the results list (being shown in Table 1) is as follows.
Table 1
By the data analysis of upper table, the high-purity bulk artificial graphite average fixed carbon content of production exists
More than 99.95%, sulphur content content is less than 0.05%, and average resistivity is less than 100 μ Ω m, and true density is more than
2.20g/cm3, every physical index all reaches the requirement of high purity graphite.
The continuous way direct current superhigh temperature graphitizing electric furnace of this utility model design has the following technical effect that:
(1) the continuous way direct current superhigh temperature graphitizing electric furnace equipment designed by this utility model is used to enter
The continuous prodution that row bulk artificial graphite is special, this and the by-product of generation in graphite electrode graphitizing process
Condition ratio is a progress the biggest；
(2) with unidirectional current as power supply and graphite electrode is in line layout, can obtain in graphitizing furnace all
Even temperature field, the raw material being in high-temperature region all can obtain ratio more consistent heating or insulation, it is ensured that raw
The abundant graphitization of bulk graphite of output, uniform quality, purity is higher；
(3) there is a heat preservation zone in stove, the material of heat preservation zone is not discharged with high-purity bulk graphite, can be kept away
Exempting from accumulation of heat loss, the power consumption therefore producing high-purity bulk artificial graphite can be down to below 2000kwh/t；
(4) due to the heat preservation zone certain buffer action to high-temperature region, furnace inner lining temperature can be reduced to
1150～1250 DEG C, inner lining refractory is required to decrease by the reduction of temperature, on the other hand also may be used
Substantially to increase the bulk life time of continuous way direct current superhigh temperature graphitizing electric furnace, reduce maintenance time, improve
Working performance；
(5) the high-purity bulk artificial graphite uniform quality produced, average fixed carbon content 99.95% with
On, sulphur content content is less than 0.05%, and average resistivity is less than 100 μ Ω m, and true density is more than 2.20g/cm3,
Every physical index be all up to state standards defined in the requirement of high-purity Delanium.
Claims (5)
1. a continuous way direct current superhigh temperature graphitizing electric furnace, it is characterised in that this kind of electric furnace includes feeding
Device (1), feed hopper (2), graphite electrode (3), dust collect plant (4), furnace body (5), furnace bottom
Cooling device (6), drawing mechanism (7), finished product storage tank (8) and screw conveyor (10), its
In: feeding device (1) is placed in the dead ahead appropriate location of furnace body (5), feeding device (1) upper
End is connected with screw conveyor (10)；The end of screw conveyor (10) is placed in feed hopper (2)
On；Feed hopper (2) is placed in the surface of furnace body (5), exit, its underpart and furnace body (5)
It is joined directly together logical；Furnace body (5) is made up of steel plate and liner, and liner is clay brick；Two specifications of the same race
The top of graphite electrode (3) is connected with power supply by copper bar wire, and is fixed on by electrode holde
On the framework of furnace body (5), its lower end is inserted among furnace body (5)；Dust collect plant (4) is positioned at whole
The top of individual equipment, dust collect plant (4) is provided with dust subtube (13), and with dust pelletizing system phase
Connection；It is connected with furnace bottom cooling device (6) at furnace body (5) bottom opening, furnace bottom cooling device
(6) directly and drawing mechanism (7) is corresponding；Drawing mechanism (7) is positioned at furnace bottom cooling device (6)
Lower section and extend to finished product storage tank (8) top by lifting device.
2. a continuous way direct current superhigh temperature graphitizing electric furnace as claimed in claim 1, it is characterised in that
The graphite electrode (3) of this kind of electric furnace uses DC source to be powered.
3. a continuous way direct current superhigh temperature graphitizing electric furnace as claimed in claim 1, it is characterised in that
Two root graphite electrodes (3) symmetry arrangement on body of heater centrage of this kind of electric furnace, it inserts stove originally from furnace roof
The degree of depth in body (5) is the 1/2～2/3 of furnace body (5) height.
4. a continuous way direct current superhigh temperature graphitizing electric furnace as claimed in claim 1, it is characterised in that
Distance between two root graphite electrodes (3) of this kind of electric furnace is the 3-6 of graphite electrode (3) diameter itself
Times.
5. a continuous way direct current superhigh temperature graphitizing electric furnace as claimed in claim 1, it is characterised in that
The bore being connected with furnace body (5) of the furnace bottom cooling device (6) of this kind of electric furnace is with two graphite electricity
The high-temperature region horizontal cross-section length produced between pole (3) is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168334.4U CN205472678U (en) | 2016-03-03 | 2016-03-03 | Continuous type direct current ultra -temperature graphitization electric stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620168334.4U CN205472678U (en) | 2016-03-03 | 2016-03-03 | Continuous type direct current ultra -temperature graphitization electric stove |
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| Publication Number | Publication Date |
|---|---|
| CN205472678U true CN205472678U (en) | 2016-08-17 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620168334.4U Withdrawn - After Issue CN205472678U (en) | 2016-03-03 | 2016-03-03 | Continuous type direct current ultra -temperature graphitization electric stove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645396A (en) * | 2016-03-03 | 2016-06-08 | 陈文仲 | Continuous direct-current ultrahigh-temperature graphitized electric furnace and using method thereof |
-
2016
- 2016-03-03 CN CN201620168334.4U patent/CN205472678U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645396A (en) * | 2016-03-03 | 2016-06-08 | 陈文仲 | Continuous direct-current ultrahigh-temperature graphitized electric furnace and using method thereof |
| CN105645396B (en) * | 2016-03-03 | 2017-11-21 | 沈阳中禾能源科技有限公司 | A kind of continous way direct current superhigh temperature graphitizing electric furnace and application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20171121 |