CN105783507B - Produce the double-layer roller hearth furnace and its production technology of lithium ion anode material - Google Patents
Produce the double-layer roller hearth furnace and its production technology of lithium ion anode material Download PDFInfo
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- CN105783507B CN105783507B CN201610184813.XA CN201610184813A CN105783507B CN 105783507 B CN105783507 B CN 105783507B CN 201610184813 A CN201610184813 A CN 201610184813A CN 105783507 B CN105783507 B CN 105783507B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
- F27B2009/3638—Heaters located above and under the track
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Patent of the present invention is related to a kind of double-layer roller hearth furnace and its production technology for producing lithium ion anode material, including upper strata kiln, lower floor's kiln, roller rod, heater Elema, gas handling system, saggar, kiln hood discharge duct, kiln tail gas extraction system, the roller rod is separately mounted in upper strata kiln and lower floor's kiln, saggar can be run on the roller rod, gas handling system is provided with below the roller rod of the upper strata kiln, having heaters Elema is all provided with below the top of the saggar run on the upper strata kiln club and gas handling system, it is stable using double-layer roller hearth furnace device production positive electrode processing parameter, it is able to ensure that homogeneity of product；Every layer of kiln runs the square saggar of six row 330 × 330, is 5 times of the row roller kilns sintering equipment of conventional single layer four；Above-mentioned process energy utilization rate is high simultaneously, and specific energy consumption is low, sinter plant energy consumption for the row roller kilns of conventional single layer four 60%.
Description
Technical field
Patent of the present invention is related to a kind of double-layer roller hearth furnace and its production technology for producing lithium ion anode material, belongs to lithium ion
Positive electrode produces.
Background technology
In recent years, drastically being consumed etc. for the environmental pollution that brings of reply auto industry fast development, petroleum resources influences, respectively
State is all in the research for actively developing electric automobile EV and hybrid-power electric vehicle HEV using clean energy resource.Wherein it is used as car
Carrying the electrokinetic cell of power turns into the main bottleneck that EV and HEV develops.Anode material for lithium-ion batteries is as lithium ion battery
One of core, is always the emphasis of people's research and development, and the performance for improving positive electrode is to improve the pass of performance of lithium ion battery
Key.The quality of positive electrode also directly determines the performance and price of lithium ion battery.
Currently for lithium ion battery memory-less effect, self discharge is small, and operating temperature range is wide, and energy density is high, circulation
The series of advantages such as long lifespan, environmental protection, various mobile electronic devices, electric tool, electric automobile, UPS can be widely used in
The fields such as power supply.In lithium ion battery, positive electrode determines battery performance as a kind of important core component.Conventional positive pole
Material mainly includes LiCo02,LiNiXCoYMn2-X-Y02, LiMn204Deng.
Positive electrode preparation technology includes the process such as batch mixing, sintering, broken, packaging, wherein, sintering circuit typically uses roller
The sintering equipments such as road kiln, pushed bat kiln.Roller kilns sintering unit temp is homogeneous, and product with stable quality, homogeneity is outstanding, obtains universal
Using.For traditional pushed bat kiln because of non-uniform temperature, product homogeneity is bad, brings potential safety hazard to battery therefore progressively by roller kilns
Substitution.But generally realized burn till using individual layer roller kilns in the world, and only enter the four square saggar (specifications of row：330mm*
330mm*1OOmm).In order to save occupation of land, reduce factory building investment, energy resource consumption is reduced, we have developed double-deck 6 row roller kilns to give birth to
Produce anode material of lithium battery.
The content of the invention
The problem of for existing reduction energy resource consumption, the present invention provide a kind of capacity usage ratio height, and specific energy consumption is low and imitates
The double-layer roller hearth furnace and its production technology of the high production lithium ion anode material of rate.
The technical scheme is that：A kind of double-layer roller hearth furnace for producing lithium ion anode material, including upper strata kiln, under
Layer kiln, roller rod, heater Elema, gas handling system, saggar, kiln hood discharge duct, kiln tail gas extraction system, the roller rod difference
In upper strata kiln and lower floor's kiln, the top of the roller rod can run saggar, the roller rod lower section of the upper strata kiln
Provided with gas handling system, having heaters, lower floor's kiln are all provided with below the top of the saggar of the upper strata kiln and gas handling system
Gas handling system also is provided with below the roller rod of stove, the top of the saggar of lower floor's kiln and the lower section of gas handling system, which are also equipped with, to be added
Hot device Elema, the both sides of the upper strata kiln and lower floor's kiln are equipped with kiln hood discharge duct and kiln tail gas extraction system.
To improve efficiency, in addition to advanced automatic rising-sinking platform, described automatic rising-sinking platform are arranged on upper strata kiln
With on lower floor kiln.
To ensure the control climate of kiln, in addition to kiln hood air exhauster, the kiln hood air exhauster is serially connected in kiln hood row
In feed channel, in addition to kiln tail air exhauster, the kiln tail air exhauster are serially connected on kiln tail discharge duct.
As an improvement, the saggar in the upper strata kiln and lower floor's kiln is 6 row.
As an improvement, gas handling system is 20 admission lines.
As an improvement, the kiln hood discharge duct is 10 discharge ducts.
As an improvement, the kiln tail gas extraction system is 2 discharge ducts.
To realize above technical purpose, the technical scheme is that：One kind is producing lithium ion just using double-layer roller hearth furnace
The technique of pole material, it is characterised in that：
Step 1：Starting roller kilns sintering equipment, have been filled with the saggar of constant weight material to be sintered, dress alms bowl amount is 4~
7Kg/ alms bowls；
Step 2：Part saggar enters upper strata kiln under automatic rising-sinking platform effect, and part saggar enters lower floor's kiln,
Entered with certain speed horizontal transmission in upper strata kiln and lower floor's kiln, every layer of kiln under the drive device driving of roller rod
Six row saggars；Heating rate is 1~3 DEG C/min, and 850~1050 DEG C, 10~20h of high-temperature holding time of high-temperature temperature, cool speed
1~3 DEG C/min of rate；
Step 3：After saggar leaves cooling area, the saggar of lower floor's kiln enters upper strata kiln tail by automatic rising-sinking platform
Portion, the saggar with upper strata kiln plug for outlet enter next process together.
As an improvement, 1000~3000m of the kiln hood capacity for wind3/ h, 1000~3000m of kiln tail capacity for wind3/h。
From the above, it can be seen that the present invention possesses advantages below：Positive electrode is produced using double-layer roller hearth furnace device
Not only processing parameter is stable, such as temperature field and atmosphere can keep more constant, so as to ensure that product is consistent
Property；Roller kilns used in above-mentioned technique are double-deck kiln simultaneously, and every layer of row 330X330 of kiln operation six square saggar, is conventional
5 times of the row roller kilns sintering equipment of individual layer four；Above-mentioned process energy utilization rate is high simultaneously, and specific energy consumption is low, is conventional single layer four
The 60% of row roller kilns sintering plant energy consumption.
Brief description of the drawings
Fig. 1 is the side view for the double-layer roller hearth furnace for producing lithium ion anode material.
Fig. 2 is the front view for the double-layer roller hearth furnace for producing lithium ion anode material.
Brief description of the drawings：1st, upper strata kiln, 2, lower floor's kiln, 3, roller rod, 4, heater Elema, 5, gas handling system, 6, casket
Alms bowl, 7, automatic rising-sinking platform, 8, kiln hood discharge duct, 9, kiln hood air exhauster, 10, kiln tail discharge duct, 11, kiln tail exhaust wind
Machine.
Embodiment
Embodiment：With reference to the accompanying drawings described in 1 to 2, a kind of double-layer roller hearth furnace for producing lithium ion anode material, including upper strata kiln
Stove 1, lower floor's kiln 2, roller rod 3, heater Elema 4, gas handling system 5, saggar 6, kiln hood discharge duct 8, kiln tail discharge duct
10, the roller rod 3 is separately mounted in upper strata kiln 1 and lower floor's kiln 2, and the top of the roller rod 3 is provided with saggar 6, it is described on
The lower section of roller rod 3 of layer kiln 1 is provided with gas handling system 5, the top of the saggar 6 of the upper strata kiln 1 and the lower section of gas handling system 5
Having heaters Elema 4 is all provided with, the lower section of roller rod 3 of lower floor's kiln 2 also is provided with gas handling system 5, lower floor's kiln 2
The top of saggar 6 and the lower section of gas handling system 5 are also all provided with having heaters Elema 4, the upper strata kiln 1 and lower floor's kiln 2
Both sides are equipped with kiln hood discharge duct 8 and kiln tail discharge duct 10.
Also include automatic rising-sinking platform 7, described automatic rising-sinking platform 7 is arranged on upper strata kiln 1 and lower floor's kiln 2；
Also include kiln hood air exhauster 9, the kiln hood air exhauster 9 is serially connected on kiln hood discharge duct 8；Also include kiln tail air exhauster
11, the kiln tail air exhauster 11 is serially connected on kiln tail discharge duct 10；Saggar 6 in the upper strata kiln 1 and lower floor's kiln 2
It is 6 row；Gas handling system 5 is 20 admission lines；The kiln hood discharge duct 8 is 10 discharge ducts；The kiln tail exhaust
System 10 is 2 discharge ducts.
A kind of technique that lithium ion anode material is produced using double-layer roller hearth furnace, including：
Step 1：Starting roller kilns sintering equipment, have been filled with the saggar of constant weight material to be sintered, dress alms bowl amount is 4~
7Kg/ alms bowls；
Step 2：Part saggar enters upper strata kiln 1 under automatic rising-sinking platform effect, and part saggar enters lower floor's kiln
2, with certain speed horizontal transmission in upper strata kiln 1 and lower floor's kiln 2, every layer of kiln under the drive device driving of roller rod 3
Stove enters six row saggars；Heating rate is 1~3 DEG C/min, 850~1050 DEG C of high-temperature temperature, high-temperature holding time 10~
20h, 1~3 DEG C/min of rate of temperature fall；Step 3：After saggar leaves cooling area, the saggar 6 of lower floor's kiln 2 passes through automatic lifting
Platform 7 enters the afterbody of upper strata kiln 1, and the saggar with the plug for outlet of upper strata kiln 1 enters next process together.
1000~3000m of the kiln hood capacity for wind3/ h, kiln tail capacity for wind 1000~
3000m3/h。
Comparative example one：
A kind of technique that lithium ion anode material is produced using the row roller kilns of individual layer four, including：
Step 1：Starting roller kilns sintering equipment, have been filled with the saggar of constant weight material to be sintered, dress alms bowl amount is 4~
7Kg/ alms bowls；
Step 2：Saggar enters the row kiln of individual layer four, with certain speed in individual layer four under the drive device driving of roller rod
Horizontal transmission in row kiln, kiln enter four row saggars；Heating rate is 1~3 DEG C/min, 850~1050 DEG C of high-temperature temperature,
10~20h of high-temperature holding time, 1~3 DEG C/min of rate of temperature fall；
Step 3：After saggar leaves cooling area, the saggar in four row kilns enters next process, the kiln hood row together
1000~3000m of gas air quantity3/ h, kiln tail capacity for wind 1000~
3000m3/h。
Comparative example two：
A kind of technique that lithium ion anode material is produced using double-deck four row roller kilns, including：
Step 1：Starting roller kilns sintering equipment, have been filled with the saggar of constant weight material to be sintered, dress alms bowl amount is 4~
7Kg/ alms bowls；
Step 2：Part saggar enters upper strata kiln under automatic rising-sinking platform effect, and part saggar enters lower floor's kiln,
Entered with certain speed horizontal transmission in upper strata kiln and lower floor's kiln, every layer of kiln under the drive device driving of roller rod
Four row saggars；Heating rate is 1~3 DEG C/min, and 850~1050 DEG C, 10~20h of high-temperature holding time of high-temperature temperature, cool speed
1~3 DEG C/min of rate；
Step 3：After saggar leaves cooling area, the saggar of lower floor's kiln enters upper strata kiln tail by automatic rising-sinking platform
Portion, the saggar with upper strata kiln plug for outlet enter next process together.
1000~3000m of the kiln hood capacity for wind3/ h, kiln tail capacity for wind 1000~
3000m3/h。
The production capacity (ton/moon) and energy consumption (Kwh/ tons) such as table of the technique of the production lithium ion anode material of above different structure
Shown in one：
Table one：
| Production capacity (ton/moon) | Energy consumption (KWH/ tons) | |
| Embodiment | 186.9 | 4880 |
| Comparative example one | 62.1 | 7500 |
| Comparative example two | 124.5 | 7000 |
By above table as can be seen that using yield during double-deck four row roller kilns close to during four row roller kilns of individual layer
Twice of yield, but be substantially obviously improved using yield during double-deck six row roller kilns, while double-deck six row roller kilns
Energy consumption is only than high energy consumption 1500Kwh/ tons of double-deck four row roller kilns or so, but its yield is bright compared to double-deck four row roller kilns yield
It is obviously improved.
Above to the present invention and embodiments thereof be described, this describe it is no restricted, shown in accompanying drawing also only
It is one of embodiments of the present invention, actual structure is not limited thereto.All in all if the ordinary skill people of this area
Member is enlightened by it, without departing from the spirit of the invention, similar to the technical scheme without designing for creativeness
Frame mode and embodiment, protection scope of the present invention all should be belonged to.
Claims (5)
- A kind of 1. technique that lithium ion anode material is produced using double-layer roller hearth furnace, it is characterised in that：The bilayer that the technique uses Roller kilns include upper strata kiln (1), lower floor's kiln (2), roller rod (3), heater Elema (4), gas handling system (5), saggar (6), kiln hood discharge duct (8), kiln tail discharge duct (10), the roller rod (3) are separately mounted to upper strata kiln (1) and lower floor's kiln In stove (2), the top operation charging saggar (6) of the roller rod (3), roller rod (3) lower section of the upper strata kiln (1) is provided with air inlet System (5), having heaters Elema is all provided with below the top of the saggar (6) of the upper strata kiln (1) and gas handling system (5) (4) gas handling system (5), also is provided with below the roller rod (3) of lower floor's kiln (2), the saggar (6) of lower floor's kiln (2) Top and the lower section of gas handling system (5) are also all provided with having heaters Elema (4), the upper strata kiln (1) and lower floor's kiln (2) Both sides are equipped with kiln hood discharge duct (8) and kiln tail discharge duct (10), in addition to automatic rising-sinking platform (7), automatically by upper strata The saggar that kiln runs out is sent on lower floor's track, and described automatic rising-sinking platform (7) is arranged on upper strata kiln (1) and lower floor On kiln (2), in addition to kiln hood air exhauster (9) and kiln tail air exhauster (11), the kiln hood air exhauster (9) are serially connected in kiln On head discharge duct (8), the kiln tail air exhauster (11) is serially connected on kiln tail discharge duct (10), the upper strata kiln (1) It is 6 row with the saggar (6) in lower floor's kiln (2)；Processing step specifically includes：Step 1：Start roller kilns sintering equipment, the saggar dress alms bowl amount for having been filled with constant weight material to be sintered is 4~7Kg/ Alms bowl；Step 2：Automatic platform parameter is set, saggar respectively enters upper and lower layer kiln as requested under automatic rising-sinking platform effect Stove (1,2), roller rod (3) drive device driving under with certain speed in upper strata kiln (1) and lower floor's kiln (2) level Transmission, every layer of kiln enter six row saggars；Heating rate is 1~3 DEG C/min, 850~1050 DEG C of high-temperature temperature, soak 10~20h of time, 1~3 DEG C/min of rate of temperature fall；Step 3：After saggar leaves cooling area, the saggar (6) of upper and lower layer kiln is entered lower one together by hoistable platform (7) Process.
- 2. the technique according to claim 1 that lithium ion anode material is produced using double-layer roller hearth furnace, it is characterised in that：Enter Gas system (5) is 20 admission lines.
- 3. the technique according to claim 1 that lithium ion anode material is produced using double-layer roller hearth furnace, it is characterised in that：Institute It is 10 discharge ducts to state kiln hood discharge duct (8).
- 4. the technique according to claim 1 that lithium ion anode material is produced using double-layer roller hearth furnace, it is characterised in that：Institute It is 2 discharge ducts to state kiln tail discharge duct (10).
- 5. the technique according to claim 1 that lithium ion anode material is produced using double-layer roller hearth furnace, it is characterised in that：Kiln 1000~3000m of head capacity for wind3/ h, 1000~3000m of kiln tail capacity for wind3/h。
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524749A (en) * | 2016-12-30 | 2017-03-22 | 苏州久亿通热工技术有限公司 | Battery material sintering furnace with six saggers on one column |
| CN108253800B (en) * | 2018-03-07 | 2024-02-13 | 合肥工业大学智能制造技术研究院 | Exhaust and heat transfer device for roasting lithium ion battery electrode material |
| CN109028938B (en) * | 2018-05-30 | 2019-12-13 | 中国电子科技集团公司第四十八研究所 | Double-layer sealing roller bed furnace |
| CN109037593A (en) * | 2018-06-20 | 2018-12-18 | 无锡百擎智能机器人科技有限公司 | A kind of lithium battery material automated production line control system |
| CN108715346B (en) * | 2018-07-06 | 2024-06-28 | 湖南德景源科技有限公司 | Box body production system |
| CN109556397B (en) * | 2018-12-13 | 2024-05-10 | 广东邦普循环科技有限公司 | Roller kiln for producing lithium ion battery anode material and production process thereof |
| CN111351347A (en) * | 2020-03-26 | 2020-06-30 | 苏州博涛机电设备有限公司 | Double-layer roller bed furnace |
| KR20230093510A (en) * | 2020-12-01 | 2023-06-27 | 씨노아펙스 써모 테크놀로지 (쑤저우) 씨오., 엘티디. | Continuous kilns and thermal or thermochemical treatment methods |
| CN113823764B (en) * | 2021-09-29 | 2023-06-09 | 北京当升材料科技股份有限公司 | Roller kiln for sintering anode material, multi-element anode material and preparation method thereof |
| CN114251942B (en) * | 2021-11-30 | 2024-05-10 | 广东邦普循环科技有限公司 | Production line and production method of lithium ion battery anode material |
| CN117268096B (en) * | 2023-11-21 | 2024-02-02 | 江苏博涛智能热工股份有限公司 | Double-layer kiln with double-track external circulation line |
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| JP2015001306A (en) * | 2013-06-13 | 2015-01-05 | 光洋サーモシステム株式会社 | Transport device for continuous heat treatment furnace |
| CN104880061A (en) * | 2015-05-25 | 2015-09-02 | 绥阳县华夏陶瓷有限责任公司 | Oxygen enrichment double-layer roller kiln |
| CN204987849U (en) * | 2015-09-28 | 2016-01-20 | 东莞市浈颖机械设备有限公司 | Double -deck energy -conserving oven |
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