CN106219522A - Graphitizing furnace and artificial plumbago negative pole material graphitization production method - Google Patents
Graphitizing furnace and artificial plumbago negative pole material graphitization production method Download PDFInfo
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- CN106219522A CN106219522A CN201610548210.3A CN201610548210A CN106219522A CN 106219522 A CN106219522 A CN 106219522A CN 201610548210 A CN201610548210 A CN 201610548210A CN 106219522 A CN106219522 A CN 106219522A
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- heater
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a kind of graphitizing furnace and artificial plumbago negative pole material graphitization production method.The body of heater of this graphitizing furnace is the body structure of upper end open, and the opening of body of heater bell seals, and equipped with conductive electrode on two relative body of heater side walls, furnace interior is distributed several graphite guide electroplaxs.In this graphitization production method, not spent material container or material boat, but use and will treat that graphited raw material is placed directly within burner hearth enforcement graphitization processing, material batch can be improved, yield promotes 25%；In heating process, heat waste is little, and power consumption is greatly lowered, and more per ton than common stove electricity consumption unit consumption at least saves 1000kw/h.In stove, surrounding loads without insulation material, avoids introducing impurity during discharging, and product purity is high；Concentrated vectoring administers flue gas, and tailings recycles, it is achieved clean energy resource produces, and environmental conservation improves more than 95%；Utilizing air cooling system, furnace binding is simple, saving water resource.
Description
Technical field
The present invention relates to carbon negative electrode material of lithium ion cell technical field, particularly relate to a kind of artificial plumbago negative pole material
Graphitization Apparatus and method for.
Background technology
Lithium ion battery has a series of advantages such as specific capacity height, running voltage height, good, the memory-less effect of safety,
It is widely used in notebook computer, mobile phone and instrument and meter many portable electronic instruments equipment.In recent years, along with electricity
Sub-product and vehicle-mounted with energy storage device, the requirement of miniaturization, lightweight and multi-functional, long-time drivingization is improved constantly, to lithium
The requirement of ion battery high-energy-density, high rate capability and long circulation life constantly promotes.Delanium is through superelevation fire stons
The significant advantages such as ink heat-transformation has after processing that capacity is high, has extended cycle life, stable performance, in lithium ion battery negative material
To extensively application.Therefore, high temperature graphitization is to prepare one of indispensable technique of artificial plumbago negative pole material.
At present, most of traditional methods use acheson furnace (abbreviation acheson furnace) and process Delanium
Negative material.The principle of acheson furnace is to flow through stove internal resistance material by electric current and make resistance material produce a large amount of heat energy, the most again
Transfer thermal energy to product, finally realize product graphitization.Use acheson furnace processing negative material need power transmission 30～40 little
Time, the power consumption of product per ton is at 15000～16000 degree, and electricity unit consumption is high, and environmental pollution is bigger.In order to overcome Ai Qi
The defect of inferior stove, the most a lot of enterprises use inner string graphitization stove.The principle of inner string graphitization stove be then by by product with one
Determine mode to be serially connected in stove, flow a current through product itself during energising and produce a large amount of heat energy and reach uniform temperature
(generally at 3000～3100 DEG C) and realize product graphitization.Inner string graphitization stove processing negative material need power transmission 20～30 little
Time, the power consumption of product per ton is at 13000～13500 degree, and production cost saves general 20～30% than acheson furnace, electricity unit consumption
Low, cost-effective, it is not required to resistance material, environmental pollution is little.
But, in place of existing inner string graphitization stove production method also has not as people's will: one is that negative material needs to use thing
Material container or material boat contain, and rise the auxiliary of gentle cooling together owing to material container or material boat are as negative pole material
Instrument, consumes substantial amounts of heat in graphitization technique, causes graphitization cost to significantly improve.Two is to be incubated and preventing stove
Interior material aoxidizes, and in stove, the insulation material of surrounding petroleum coke powder loads, and insulation material can be caused to be not easily cleaned and introduce miscellaneous during discharging
Matter, causes product purity the highest.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of graphitizing furnace and artificial plumbago negative pole material
Graphitization production method, the production efficiency of the method is high, low cost, and prepared artificial plumbago negative pole material product purity is high.
Specifically, not spent material container or material boat and insulation material in graphitizing process, but Delanium is directly put
Implementing graphitization processing in burner hearth, can improve material batch, yield promotes at least 25%；In heating process, heat waste is little,
Power consumption is greatly lowered, and more per ton than common stove electricity consumption unit consumption at least saves 1000kw/h；Can also save substantial amounts of for making
The metallurgical coke of resistance material and graphitized coke, thus significantly reduce energy consumption and production cost, economic benefit is the most notable.Further,
This graphitizing furnace uses air cooling to realize the heat radiation of body of heater, and furnace binding is simple, saving water resource.
For achieving the above object, the present invention provides a kind of graphitizing furnace, and including body of heater and bell, wherein, body of heater is upper end
The body structure of opening, the opening of body of heater bell seals, equipped with conductive electrode on two relative body of heater side walls, at stove
Internal portion conductive electrode from the body of heater side wall of side, to the conductive electrode on opposite side body of heater side wall, is distributed several
Graphite guide electroplax.
Preferably, the body structure of described body of heater is to use fireproof insulation brick to be built into.
Preferably, conductive electrode is combined into by polylith graphite block, tightly contacts between graphite block with body of heater side wall.
Preferably, body of heater side wall embeds many conductive electrodes.
Preferably, between the most parallel conductive electrode being distributed in both sides body of heater side wall of graphite guide electroplax.
Preferably, bell removably connects with body of heater.
Further, this bell is additionally provided with gas port.In the present invention, described gas port is connected with waste gas treatment equipment,
Such as it is connected with pipeline successively with gas wash tower, desulfurizing tower and plasma discharge pond.
Further, it is provided with circulating air cooling system at furnace bottom.Such as ventilation shaft being arranged below at body of heater, blower fan is arranged on
Ventilation shaft one end, by the air-supply of blower fan, drives air to dispel the heat in ventilation shaft flowing.
Further, this graphitizing furnace also includes suction system, and this suction system is made up of suction plate and mechanical hand.Enter one
Step, described mechanical hand is program control mechanical hand.
Present invention also offers the artificial plumbago negative pole material graphitization production method using above-mentioned graphitizing furnace, including under
State step:
A. will treat that graphited Delanium raw material is directly loadable in graphitizing furnace burner hearth, extra spent material container or
Material boat；
B. graphite guide electroplax is inserted in raw material, with the opening of bell sealed graphite furnace body；
C. in stove, power transmission carries out graphitization；
D. power transmission in stove is stopped, cooling；
E. discharging.
Preferably, in step a, treat that graphited Delanium raw material is graphite Jiao, pitch coke, needle coke and mesocarbon
One or more of microsphere.
Preferably, in step b, in graphitization heating process, the waste gas of volatilization is discharged by the gas port on bell and is collected
Middle process.It is further preferred that pass first into gas wash tower to take out the granule dust in waste gas, it is then passed through desulfurizing tower and goes in removing exhaust gas
Sulfur, is neutralized waste gas finally by plasma discharge pond, and concentrates, the waste residue collected for subsequent treatment.
Preferably, in step c, in stove, the pattern of power transmission is: power transmission initial stage electric current density 20～25A/cm2, during power transmission
Between be 18～24 hours, electric current density is promoted to 28A/cm by the power transmission later stage2So that the product temperature in stove be promoted to 2800～
3200 DEG C, it is incubated 10～12 hours.
Preferably, in step d, the type of cooling is air-cooled.Such as, below graphitizing furnace body of heater, ventilation shaft, wind it are provided with
Machine is arranged on ventilation shaft one end.By the air-supply of blower fan, air is driven to dispel the heat in ventilation shaft flowing, it is achieved cooling.
Preferably, in step d, cool time is 24～48 hours.
In said method, do not load insulation material.Preferably, in step e, use suction system discharging.Start suction system
It is first turned on bell before system discharging.During suction, the material that first will be close to graphitizing furnace top and furnace wall surrounding oxidic sucks
Tailing storehouse, sucks finished bin by remaining material the most again.
Present invention also offers the graphitization system being applicable to said method, including the graphitizing furnace of the present invention, gas wash tower,
Desulfurizing tower and plasma discharge pond, wherein, the bell of graphitizing furnace is provided with gas port, described gas port and gas wash tower, desulfurizing tower and row
Stock tank connects with pipeline successively.Gas wash tower, desulfurizing tower and plasma discharge pond are for processing the waste gas discharged from graphitizing furnace.
Compared with prior art, it is an advantage of the current invention that:
1. the graphite electrode power transmission in building body of heater side wall, can load many electrodes in body of heater side wall, cooling
Good, power transmission is fast, it is easy to change, and builds stove expense such that it is able to save.
2. to utilize Delanium material itself to do heater, electric current and Temperature Distribution ratio more uniform for graphitizing furnace, and heat up speed
Degree is fast, only needs 6-10 hour from being initially powered up to reaching graphitizable high temperature, substantially reduces the electrified regulation time.
3. without resistance material and material container in graphitizing furnace, can improve material batch, yield promotes at least 25%；
In heating process, heat waste is little, and power consumption is greatly lowered, and more per ton than common stove electricity consumption unit consumption at least saves 1000kw/h；All right
Saving the substantial amounts of metallurgical coke for making resistance material and graphitized coke, economic benefit is the most notable.
4. utilizing air cooling system, furnace binding is simple, saving water resource.
5. in stove, surrounding loads without insulation material, avoids introducing impurity during discharging, and product purity is high.
6. use program control mechanical hand suction system, can exactly sucking-off near graphitizing furnace top and graphitization furnace wall week
Enclose the material of oxidation, it is ensured that the purity of product.
7. concentrated vectoring administer flue gas, tailings recycle, it is achieved clean energy resource produce, environmental conservation improve 95% with
On.
Accompanying drawing explanation
Fig. 1 is the perspective view of graphitizing furnace.
Fig. 2 is graphitization system.
Description of reference numerals:
1, body of heater side wall；2, body of heater side wall；3, body of heater side wall；4, body of heater side wall；5, graphite block；6, graphite guide electroplax；7、
Mechanical hand；8, suction plate；9, ventilation shaft；10, bell；11, gas port；12, gas wash tower；13, desulfurizing tower；14, plasma discharge pond；
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail, but skilled in the art realises that down
Literary composition is intended to illustrate the present invention and the unrestricted present invention.Any improvement made on the basis of the present invention and change are all the present invention's
Within protection domain.
As depicted in figs. 1 and 2, graphitizing furnace body of heater is the rectangular box body knot using fireproof insulation brick to be built into upper end open
Structure, body of heater side wall 1,2,3,4 is in sustained height, body of heater a size of 4 × 4 × 10m.Described graphitizing furnace body of heater side wall 1 and 2
Certain altitude at the most fixed two conductive electrodes being combined into by eight pieces of graphite blocks 5 respectively, graphite block and furnace body wall it
Between tightly contact.During production, power positive cathode connects thereon, makes electric current import in stove.Use multifunction crane will treat graphited
Delanium powder is filled in graphitizing furnace body of heater, and described Delanium powder is appointing of petroleum coke, pitch coke and coal tar
A kind of.Graphite guide electroplax 6 is mainly used for increasing the electric conductivity in material graphitizing process, between multiple graphite guide electroplax 6 grades
Anomaly row is distributed between two conductive electrodes, and conductive plate quantity depends on the size of stove.
Bell 10 removably connects with graphitization furnace body, during banking, utilizes bell 10 to seal up opening of graphitizing furnace body of heater
Mouth end.Bell 10 is provided with gas port 11, and gas port 11, gas wash tower 12, desulfurizing tower 13 and plasma discharge pond 14 connect with pipeline successively,
In graphitization heating process, the waste gas of volatilization removes the granular powder in removing exhaust gas in passing first into gas wash tower 12 by gas port 11
Dirt, is then passed through desulfurizing tower 13 and removes the sulfur in removing exhaust gas, in carrying out some poisonous and hazardous waste gas finally by plasma discharge pond 14
With, the waste residue collected is concentrated simultaneously, facilitate subsequent treatment.Utilize gas wash tower and desulfurizing tower that waste gas is focused on,
First purify and discharge again, the demand of protection environment can either be met, again it can be avoided that the waste gas produced in graphitizing process endangers work
Make the healthy of personnel.
When in stove, power transmission carries out graphitization, power transmission initial stage electric current density 20～25A/cm2, electric power feeding time is 18～24 little
Time, electric current density is promoted to 28A/cm by the power transmission later stage2So that the product temperature in stove is promoted to 2800～3200 DEG C, it is incubated 10
～12 hours.
After the graphitization heating period completes, graphitizing furnace enters cooling stage, utilizes Temperature fall to make the temperature of body of heater
Degree rate of cooling is very slow, in order to improve the cooling rate of body of heater, builds and have 8～10 cuboid ventilation ducts below graphitization furnace body
Road 9.Described ventilation shaft uses refractory brick to be built into, and is equidistantly arranged in parallel, spacing 10～15 centimetres.Blower fan is arranged on ventilation
Pipeline one end, by the air-supply of blower fan, drives air to dispel the heat in ventilation shaft flowing, improves body of heater rate of cooling, make body of heater
Interior Delanium quickly cools down, and saves 1～2 day than traditional inner string graphitization stove, and then accelerates whole graphitization production stream
Journey, improves production efficiency.
After cooling, start suction system discharging.Being first turned on bell 10, described suction system is program control suction system,
It is made up of suction plate 8 and mechanical hand 7 (the most program control mechanical hand).Suction plate driving mechanical hands carries out suction, first will be close to
Around graphitizing furnace top 80～100mm and graphitization furnace wall, the material of 100～120mm oxidations sucks tailing storehouse, will the most again
Remaining material sucks finished bin.
Embodiment 1:
Take in the after-smithing petroleum coke load map 1 that 1000KG particle size diameter D50 is 18 μm high-temperature process, power transmission in graphitizing furnace
Initial stage electric current density 20A/cm2, electric power feeding time is 24 hours, and electric current density is promoted to 28A/cm by the power transmission later stage2So that in stove
Product temperature is promoted to 2800 DEG C, is incubated 12 hours, stops power transmission in stove, cools down about 28 hours, starts suction system and goes out
Material, obtains qualified products.
Embodiment 2:
Take in the pitch coke load map 1 that 1000KG particle size diameter D50 is 22 μm high-temperature process, power transmission initial stage in graphitizing furnace
Electric current density 25A/cm2, electric power feeding time is 16 hours, and electric current density is promoted to 28A/cm by the power transmission later stage2So that the product in stove
Temperature is promoted to 3000 DEG C, is incubated 10 hours, stops power transmission in stove, cools down about 30 hours, starts suction system discharging,
To qualified products.
Embodiment 3:
Take in the coal tar load map 1 that 1000KG particle size diameter D50 is 11 μm high-temperature process in graphitizing furnace, power transmission initial stage electricity
Current density 20A/cm2, electric power feeding time is 25 hours, and electric current density is promoted to 28A/cm by the power transmission later stage2So that the product temperature in stove
Degree is promoted to 3200 DEG C, is incubated 10 hours, stops power transmission in stove, cools down about 30 hours, starts suction system discharging, obtains
Qualified products.
Claims (10)
1. a graphitizing furnace, including body of heater and bell, it is characterised in that body of heater is the body structure of upper end open, body of heater
Opening bell seals, equipped with conductive electrode on two relative body of heater side walls, at furnace interior from side body of heater side wall
On conductive electrode between the conductive electrode on opposite side body of heater side wall, several graphite guide electroplax is distributed.
Preferably, the body structure of described body of heater is to use fireproof insulation brick to be built into.
It is further preferred that bell removably connects with body of heater.
2. graphitizing furnace as claimed in claim 1, it is characterised in that conductive electrode is combined into by polylith graphite block, graphite block with
Tightly contact between body of heater side wall.
Preferably, body of heater side wall embeds many conductive electrodes.
It is further preferred that between the most parallel conductive electrode being distributed in both sides body of heater side wall of graphite guide electroplax.
3. graphitizing furnace as claimed in claim 1 or 2, it is characterised in that be additionally provided with gas port, the most described inducing QI on bell
Hole is connected with waste gas treatment equipment, and more preferably waste gas treatment equipment is to use pipe successively with gas wash tower, desulfurizing tower and plasma discharge pond successively
Road connects.
Preferably, this graphitizing furnace also includes suction system, and this suction system is made up of suction plate and mechanical hand.
It is further preferred that mechanical hand is program control mechanical hand.
4. the graphitizing furnace as described in any one of claim 1-3, it is characterised in that be provided with circulating air cooling bottom graphitizing furnace
System.
Preferably, ventilation shaft being arranged below at body of heater, blower fan is arranged on ventilation shaft one end.
5. an artificial plumbago negative pole material graphitization production method, it comprises the steps:
A. will treat that graphited Delanium raw material is directly loadable in graphitizing furnace burner hearth, not extra spent material container or material
Boat；Preferably, described raw material is one or more of petroleum coke, pitch coke, needle coke and carbonaceous mesophase spherules.
B. graphite guide electroplax is inserted in raw material, with the opening of bell sealed graphite furnace body；
C. in stove, power transmission carries out graphitization；
D. power transmission in stove is stopped, cooling；
E. discharging.
Production method the most according to claim 5, it is characterised in that in step b, in graphitization heating process, volatilization is useless
Gas is discharged by the gas port on bell and is focused on.
Preferably, the waste gas that gas port is discharged passes first into gas wash tower and takes out the granule dust in waste gas, is then passed through desulfurizing tower
Remove the sulfur in removing exhaust gas, finally by plasma discharge pond, waste gas is neutralized, and the waste residue collected is concentrated, for follow-up place
Reason.
7. according to the production method described in claim 5 or 6, it is characterised in that the transmission mode in stove described in step c
For: power transmission initial stage electric current density 20～25A/cm2, electric power feeding time is 18～24 hours, and electric current density is promoted to by the power transmission later stage
28A/cm2So that the product temperature in stove is promoted to 2800～3200 DEG C, it is incubated 10～12 hours.
8., according to the production method described in any one of claim 5-7, it is characterised in that in step d, the type of cooling is air-cooled.
Preferably, being provided with ventilation shaft below graphitizing furnace body of heater, blower fan is arranged on ventilation shaft one end, sending by blower fan
Wind, drives air to dispel the heat in ventilation shaft flowing, it is achieved cooling.
Preferably, in step d, cool time is 24～48 hours.
9., according to the production method described in any one of claim 5-8, it is characterised in that in step e, use suction system to go out
Material.
Preferably, it is first turned on bell before starting suction system discharging；During suction, first will be close to graphitizing furnace top and stove
The material of wall surrounding oxidic sucks tailing storehouse, more remaining material is sucked finished bin.
10. for producing the graphitization system of artificial plumbago negative pole material, it is characterised in that described graphitization system includes such as power
Profit requires the graphitizing furnace described in any one of 1-4, also includes gas wash tower, desulfurizing tower and plasma discharge pond, wherein, the bell of graphitizing furnace
Being provided with gas port, described gas port is connected with pipeline successively with gas wash tower, desulfurizing tower and plasma discharge pond.
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Cited By (5)
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| CN108863364A (en) * | 2018-06-28 | 2018-11-23 | 百色皓海碳素有限公司 | The preparation method of graphitization cathode |
| CN114314067A (en) * | 2021-12-22 | 2022-04-12 | 江苏道金智能装备有限公司 | Automatic throw material transfer station |
| CN114455578A (en) * | 2022-01-21 | 2022-05-10 | 青岛瀚博电子科技有限公司 | Novel graphitization method for graphite negative electrode material of lithium ion battery |
| CN115682746A (en) * | 2022-10-31 | 2023-02-03 | 奇计(江苏)科技服务有限公司 | Negative electrode material graphitization furnace system and process easy for tail gas collection treatment |
| CN116960345A (en) * | 2023-08-09 | 2023-10-27 | 山东兴丰新能源科技有限公司 | Device for preparing battery cathode material by utilizing box-type furnace and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863364A (en) * | 2018-06-28 | 2018-11-23 | 百色皓海碳素有限公司 | The preparation method of graphitization cathode |
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| CN114314067A (en) * | 2021-12-22 | 2022-04-12 | 江苏道金智能装备有限公司 | Automatic throw material transfer station |
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| CN114455578A (en) * | 2022-01-21 | 2022-05-10 | 青岛瀚博电子科技有限公司 | Novel graphitization method for graphite negative electrode material of lithium ion battery |
| CN115682746A (en) * | 2022-10-31 | 2023-02-03 | 奇计(江苏)科技服务有限公司 | Negative electrode material graphitization furnace system and process easy for tail gas collection treatment |
| CN115682746B (en) * | 2022-10-31 | 2023-09-12 | 奇计(江苏)科技服务有限公司 | Negative electrode material graphitizing furnace system and process easy to collect and treat tail gas |
| CN116960345A (en) * | 2023-08-09 | 2023-10-27 | 山东兴丰新能源科技有限公司 | Device for preparing battery cathode material by utilizing box-type furnace and preparation method thereof |
| CN116960345B (en) * | 2023-08-09 | 2024-03-29 | 山东兴丰新能源科技有限公司 | Device for preparing battery cathode material by utilizing box-type furnace and preparation method thereof |
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Application publication date: 20161214 |
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