CN105502362B - A kind of acheson furnace and its charging technique for producing graphite negative electrodes material - Google Patents
A kind of acheson furnace and its charging technique for producing graphite negative electrodes material Download PDFInfo
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- CN105502362B CN105502362B CN201510996092.8A CN201510996092A CN105502362B CN 105502362 B CN105502362 B CN 105502362B CN 201510996092 A CN201510996092 A CN 201510996092A CN 105502362 B CN105502362 B CN 105502362B
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention provides a kind of acheson furnace and its charging technique for producing graphite negative electrodes material, belong to negative material preparing technical field.A kind of acheson furnace for producing graphite negative electrodes material, including by furnace foundation bottom, burner wall, the body of heater that stove tail wall and furnace wall plate surround, the top at the furnace foundation bottom from bottom to top sets gradually quartz sand layer and silica aerogel layer, the top of the silica aerogel layer sets combustion chamber, the combustion chamber includes some crucibles, it is arranged on the calcined coke layer of the crucible outer surface, and it is arranged on the oil focus layer of the calcined coke layer outer surface, the top of the combustion chamber and side set profiled sheeting, the top of the profiled sheeting and side set adiabator layer, the top of the body of heater sets gas skirt.The combustion chamber of acheson furnace of the present invention can reach higher temperature, and the degree of graphitization of product is higher, and the ton power consumption of negative material finished product reduces, and the yield of carburant is double, and body of heater cooling is fast, come out of the stove fast, environmental protection and energy saving significant effect.
Description
Technical field
The invention belongs to negative material preparing technical field, and in particular to a kind of Acheson for producing graphite negative electrodes material
Stove and its charging technique.
Background technology
Lithium ion battery is the representative of contemporary heavy-duty battery, is a kind of New Green Energy product-derived, be widely used in information,
Telecommunication and power industry.With the development of international productivity, the quick consumption of petroleum resources, city great amount of fuel oil vehicle exhaust produces
Pollution caused by environmental problem become increasingly conspicuous, really to solve the tail gas pollution of automobile, development zero-emission electric vehicle
Cry more and more higher.The key of electric vehicle performance is battery, and lithium ion battery is the ideal source of electric vehicle.Lithium ion
Raising of the cell negative electrode material to performance of lithium ion battery plays vital effect.Commodity lithium ion battery is adopted extensively at present
Use carbon negative pole material.Wherein, graphite negative electrodes material is turned into several big advantages such as its wide material sources, stable performance, energy-conserving and environment-protective
The main Types of carbon negative pole material.The production process of graphite negative electrodes material includes selection, nodularization, cladding, charing and graphite
Change, graphitization is one of important procedure in Delanium class negative material production process.At present, most of conventional methods are taken
It is acheson furnace to process Delanium class negative material.
Acheson furnace is to be transformed on the resistance furnace substrate plinth of production carborundum in 19 end of the centurys, and its main feature is loaded into
Negative material raw material in stove collectively forms stove resistance with resistance material (char particle), and 2000 ~ 3000 DEG C of high temperature is produced after energization to be made to bear
Pole material feedstock graphitization.The principle of acheson furnace is to flow through in stove resistance material by electric current to make resistance material produce a large amount of heat energy
（Usual resistance material need to reach 3000 degree or so of high temperature）, product is then transferred thermal energy to again, finally realizes product graphitization.
Tradition using acheson furnace processing negative material need 35 ~ 60 hours of power transmission, the power consumption of product per ton at 15000 ~ 16000 degree,
Electric unit consumption is high, and environmental pollution is larger；Simultaneously as limited by itself processing mode, acheson furnace the upper and lower temperature
Skewness is spent, easily causing product uneven heating in graphitizing process causes its degree of graphitization uneven, so as to influence product
Quality.The patent of Application No. 201510562328.7 discloses a kind of lithium cell cathode material graphitizing furnace, including by fire resisting
The rectangle body of heater that concrete burner wall, fire resisting concrete stove tail wall and both sides fire resisting concrete wall surround, in burner wall and stove tail wall
Body is provided with conductive electrode, and conductive electrode one end stretches to furnace interior, and one end reaches burner wall, stove tail wall Ligation in vitro
Power supply, galley body is interior to be provided with carbon slab casing, and the carbon slab casing includes the graphite block wall one at both ends, the carbon slab of both sides
Wall, upper carbon slab layer, lower carbon slab layer, and the carbon block heat generating core being arranged in carbon slab casing；The invention based on acheson furnace,
Carbon slab casing is set in stove, heated using the carbon block heat generating core being arranged in carbon slab casing, reaches reduction energy consumption, improves production capacity
Purpose；Lithium cell cathode material is carried out the invention provides a kind of graphitizing furnace of different structure, and using the graphitizing furnace
Production.
The existing one-hundred-year history of the commercial Application of acheson furnace, China is still commonly used at present.The characteristics of this stove is structure
Simply, sturdy and durable, easily maintenance, is always graphitization equipment main in carbon industry.Nevertheless, acheson graphite
Technique is there is also many problems, and graphitizing furnace uses merely calcined coke as resistance material mostly at present, but calcined coke can not be with
Water contacts, and causes the type of cooling to be limited, and can only use natural cooling, cooling is slow, extends the time of coming out of the stove；Next to that calcined coke is deposited
It is not easy to control with heavy-polluted problem, operation process greatly being lost；And after high-temperature process, by-product corresponding to calcined coke
The quality of product-carburant is relatively low.In actual production, the loading amount of calcined coke only reaches 1/3 or so of body of heater volume, causes single stove institute
Auxiliary material yield it is relatively low, quality is unstable.
The content of the invention
The technical problems to be solved by the invention are, in view of the shortcomings of the prior art, there is provided one kind cooling is fast, single power consumption is low
And the acheson furnace for being used to produce graphite negative electrodes material that product quality is stable.
Present invention also offers a kind of charging technique for the acheson furnace for producing graphite negative electrodes material.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of acheson furnace for producing graphite negative electrodes material, including by furnace foundation bottom, burner wall, stove tail wall and furnace wall
The body of heater that plate surrounds, the body of heater is symmetrical with the central axis of the burner wall and stove tail wall, the burner wall and stove
Conductive electrode is set respectively in tail wall, and the top at the furnace foundation bottom from bottom to top sets gradually quartz sand layer and silica aerogel layer, institute
State silica aerogel layer top set combustion chamber, the combustion chamber include some crucibles, be arranged on the crucible outer surface calcined coke layer,
And the oil focus layer of the calcined coke layer outer surface is arranged on, the top of the combustion chamber and side set profiled sheeting, the shaping
The top of plate and side set adiabator layer, and the top of the body of heater sets gas skirt.
Further, metallurgical coke granulosa is set between the quartz sand layer and the silica aerogel layer.
Further, the crucible is set two layers along the high direction of stove, and the interlamellar spacing of the crucible is 150 millimeters, every layer of institute
Crucible is stated along furnace superintendent direction at least provided with two rows, is arranged along stove cross direction at least provided with two, between the row of the crucible and the gap of row
Away from for 60 millimeters, the gap spacing of row and row is 10 millimeters.
Further, the row of the crucible and row between and gap filling calcined coke between the column and the column.
Further, the thickness of the oil focus layer is 600 ~ 800 millimeters, and the top and bottom laying of the crucible is forged
The thickness of focus layer is 150 millimeters afterwards, and the adiabator layer thickness at the top of the profiled sheeting is 600 ~ 1000 millimeters, the shaping
The adiabator layer thickness of plate side is 600 millimeters.
Further, the furnace wall plate includes wallboard body, and the wallboard body is refractory product, the wallboard sheet
Double layer bar is set in vivo, support member is set between the double layer bar, the wallboard body, which is set, dissipates vent hole, described
The top of wallboard body sets link, and the side of the wallboard body sets L-type to link up with.
Further, the gas skirt is the arcuate structure for concaving towards the body of heater, and the maximum secting area of the gas skirt is big
In any cross-sectional area of the body of heater.
A kind of charging technique for the acheson furnace for producing graphite negative electrodes material, comprises the following steps：
Step S1：Lay quartz sand and carbon black successively on furnace foundation bottom, tamp；
Step S2：Lifting and stationary furnace wallboard, the side of body of heater is closed；
Step S3：Profiled sheeting and steel plate are lifted successively in the inner side of the furnace wall plate, between the furnace wall plate and profiled sheeting
The spacing of reserved filling insulation material, the spacing of filling petroleum coke is reserved between the profiled sheeting and steel plate, fix respectively described in
Profiled sheeting and steel plate；
Step S4：Petroleum coke, compacting are laid on the top of the carbon black；
Step S5：Calcined coke is laid on the top of the petroleum coke；
Step S6：Negative material raw material is filled in crucible, the first crucible is placed on to the top of the calcined coke,
Calcined coke is laid and filled respectively to the top of first crucible and the week side of boss；
Step S7：Second crucible is placed on to the top of the calcined coke, in the top of second crucible and week
Calcined coke, the repeated several times step are laid and filled respectively in side, until reaching the combustion chamber requirement of design；
Step S8：Petroleum coke is laid and filled respectively between the top of the calcined coke and the profiled sheeting and steel plate,
Compacting, steel plate is detached；
Step S9：Profiled sheeting is laid on the top of the petroleum coke, the petroleum coke is completely covered；
Step S10：Lay and fill respectively between the top of the profiled sheeting and the furnace wall plate and the profiled sheeting
Insulation material；
Step S11：Shove charge finishes, site clearing, checks circuit, sets heating curve, calculates turn on angle, and be powered rises
Temperature.
Compared with prior art, beneficial effects of the present invention are as follows：
The present invention passes through the above, there is provided one kind cooling is fast, and unit product power consumption is low, the stable production of product quality
The acheson furnace of graphite negative electrodes material.Petroleum coke is employed herein, and is laid or is filled around calcined coke so that
When product is come out of the stove, calcined coke avoids to be contacted with the external world, and so as to will be traditional single by the way of natural cooling, changing into can
In a manner of using Water spray cooling, cooling is accelerated, and shortens the time of coming out of the stove so that the product yield increase of unit interval；Its
The secondary interaction by between layers of material in body of heater, plus strict charging technique, the temperature of combustion chamber is set to can reach 3000 DEG C
More than, the quality of negative material is more excellent；And raw material of the oil focus layer 8 as production carburant, by high-temperature process, gained increases
The properties of carbon agent are more preferable, and quality is more excellent；After furnace binding using the present invention, furnace temperature and negative material yield are being ensured
Under the premise of, the batch increase of calcined coke and oil focus layer 8, carburant yield is double compared to traditional handicraft, is to be added in factory
Benefit, meanwhile, compared to traditional handicraft, unit of the present invention（Ton）Product power consumption is greatly reduced, and maintains 5000 degree or so of ton power consumption,
Energy-saving effect is notable.
Lithium cell cathode material is produced using the graphitizing furnace of the present invention, combustion chamber can reach higher temperature, negative material
The degree of graphitization of raw material, calcined coke and oil focus layer 8 is higher, and the performance of negative material finished product and carburant is more preferable, negative pole material
The ton power consumption of material finished product is reduced to traditional 1/3 or so, and the yield of carburant is double, and body of heater cooling is fast, comes out of the stove fast, environmental protection
Energy-saving effect is notable.
Brief description of the drawings
Fig. 1：A kind of structural representation for the acheson furnace for producing graphite negative electrodes material of the present invention；
Fig. 2：Fig. 1 of the present invention sectional view；
Fig. 3：Fig. 2 of the present invention A-A sectional views；
Fig. 4：Fig. 3 of the present invention B-B sectional views；
Fig. 5：The sectional view of furnace wall plate in Fig. 1 of the present invention；
Wherein, 1- furnace foundations bottom, 2- burner walls, 3- stove tail walls, 4- furnace wall plates, 5- conductive electrodes, 6- quartz sand layers, 7-
Silica aerogel layer, 8- oil focus layer, 9- calcined coke layers, 10- crucibles, 11- profiled sheetings, 12- adiabator layers, 13- gas skirts, 14-
Pad, 15- graphite powders, 16- refractory brick, 17- furnace stays, 18- gases recovery house steward, 19- gas collection pipelines.
Embodiment
For a better understanding of the present invention, present disclosure, but this hair are further fairly set out with reference to embodiment
Bright protection content is not limited solely to the following examples.In the following description, give a large amount of concrete details so as to
More thorough understanding of the invention is provided.It will be apparent, however, to one skilled in the art that the present invention can be with
It is carried out without one or more of these details.In other examples, in order to avoid obscuring with the present invention, for
Some technical characteristics well known in the art are not described.
Refering to Fig. 1 ~ Fig. 4, a kind of acheson furnace for producing graphite negative electrodes material of the invention, including by furnace foundation bottom 1, burner
The body of heater that wall 2, stove tail wall 3 and furnace wall plate 4 surround, body of heater is symmetrical with the central axis of burner wall 2 and stove tail wall 3,
Conductive electrode 5 is set respectively in burner wall 2 and stove tail wall 3, the top at furnace foundation bottom 1 from bottom to top sets gradually quartz sand layer
6 and silica aerogel layer 7, the top of silica aerogel layer 7 sets combustion chamber, and combustion chamber includes some crucibles, is arranged on the calcined coke of crucible outer surface
Layer 9 and the oil focus layer 8 for being arranged on the outer surface of calcined coke layer 9, the top of combustion chamber and side set profiled sheeting 11, profiled sheeting 11
Top and side adiabator layer 12 is set, the top of body of heater sets gas skirt 13.
In the present invention, burner wall 2 and stove tail wall 3 are respectively by conductive electrode 5, pad 14, graphite powder 15 and refractory brick
16 compositions, pad 14 are graphited graphite block, and conductive electrode 5 sets m rows along stove cross direction, set n to arrange along the high direction of stove, m
It is the integer more than or equal to 1 with n, it is preferred that m takes 4, n to take 3；Pad 14 is set between each two conductive electrode 5, it is close
The conductive electrode 5 of combustion chamber side protrudes 14 1 ~ 2 centimetres of pad, and conductive electrode 5 is equal with the height of pad 14, width, leads
The length of electrode 5 is more than the length of pad 14, and side of the conductive electrode 5 away from combustion chamber is reinforced by refractory brick 16, conductive electricity
Graphite powder 15 is filled with the space that pole 5, pad 14 and refractory brick 16 surround.
Refering to Fig. 5, furnace wall plate 4 is fixed by some furnace stays 17, wherein, furnace wall plate 4 includes wallboard body 4-1,
Wallboard body is refractory product, and double layer bar 4-2 is set in wallboard body, support member 4- is set between double layer bar
3, wallboard body, which is set, dissipates vent hole 4-4, and the top of wallboard body sets link 4-5, and the side of wallboard body sets L-type to link up with
4-6.Wherein, wallboard body is refractory product, is the major support members of furnace wall plate 4, and inside uses double layer bar, and
Connected between double-layer network by triangular support part, double layer bar adds the cracking resistance of wallboard body first, prevents
The larger lateral pressure damage furnace wall plate of wallboard body, the supportive of the support performance of triangular support part much stronger than a reinforcing bar
Can, the connection of double layer bar can be strengthened, prevent the deformation of bar-mat reinforcement under larger lateral pressure, to the compression strength of furnace wall plate
Improved with tensile strength larger；Scattered vent hole is easy to the discharge and collection of fugitive constituent in body of heater, and link facilitates the movement of furnace wall plate,
Crane gear directly can sling furnace wall plate by link and move；The opening of L-type hook down, is easy to furnace wall plate
Lifting, plays a part of balanced support when not being put into body of heater material, facilitates the installation of body of heater and being put into for material.
It is preferable in the present invention, metallurgical coke granulosa is laid between quartz sand layer 6 and silica aerogel layer 7.
The thickness of oil focus layer 8 is 600 ~ 800 millimeters, and the thickness of the calcined coke layer 9 of the top and bottom laying of crucible is equal
For 150 millimeters, the thickness of adiabator layer 12 at the top of profiled sheeting 11 is 600 ~ 1000 millimeters, the insulation material of the side of profiled sheeting 11
12 thickness of layer are 600 millimeters.Practice have shown that in body of heater auxiliary material used laying order and thickness have to the structure of body of heater it is aobvious
Writing influences, and then temperature, the quality of product and yield to body of heater, production efficiency and energy consumption etc. have an impact.Therefore, in shove charge
When need in strict accordance with design requirement carry out operation.
Crucible used in the present invention is hollow cylindrical body, is formed for carbon materials after high-temperature process.Crucible makes
To must be cleaned out before inside and out it, need to pay special attention to avoid before, during and after charging ash content outside crucible,
Enter in the impurity such as moisture.Concretely comprising the following steps for negative material raw material is contained in crucible：1. clear up crucible：Inside thorough cleaning crucible
And outside debris, keep the cleaning of crucible clean；2. feed：Negative material raw material is loaded inside crucible, in the process,
It is with light packs, put down gently, prevent crucible to be destroyed, cover the lid for the crucible for having contained negative material raw material after charging；③
Numbering, record：The crucible that charging finishes is numbered, and recorded, you can carries out shove charge.
In the present invention, crucible 10 is set two layers along the high direction of stove, and the interlamellar spacing of crucible 10 is 150 millimeters.
Per crucible 10 along furnace superintendent direction at least provided with two rows, along stove cross direction at least provided with two row, the row of crucible 10 with
Gap spacing between row is 60 millimeters, and gap spacing between the column and the column is 10 millimeters.
For example, referring to Fig. 3,23 rows are set along furnace superintendent direction per crucible 10, six row are set along stove cross direction；Crucible
Gap spacing between 10 row and row is 60 millimeters, and gap spacing between the column and the column is 10 millimeters.
In the present invention, between the row of crucible 10 and row and gap filling calcined coke between the column and the column.
The present invention is to quartz sand, carbon black, petroleum coke, calcined coke, insulation material, negative material raw material and metallurgical char particle
Source has no specifically limited, can be general raw material that is commercially available, and being well known to the skilled person.Insulation material can be with
, can be with Reusability using metallurgical char particle and the mixture of quartz sand；Negative material raw material can be few using ash content, and moisture is few,
Easy conductive, the material of ultra-fine high-carbon, it can specifically use carbosphere material, needle coke, pitch coke or native graphite.
Gas skirt 13 is the arcuate structure for concaving towards body of heater, and the maximum secting area of gas skirt 13 is more than any cross section of body of heater
Product.Specifically, the top of gas skirt 13 sets the gas collection pipeline 19 being connected with gas recovery house steward 18；Gas skirt 13 is
High temperature resistant product, if being provided with dry gas suction inlet, gas suction inlet communicates with gas collection pipeline 19, and gas recovery is total
Pipe 18 is connected with negative pressure unit.
The invention provides a kind of charging technique for the acheson furnace for producing graphite negative electrodes material, comprise the following steps：
Step S1：Lay quartz sand and carbon black successively on furnace foundation bottom, tamp；
Step S2：Lifting and stationary furnace wallboard, the side of body of heater is closed；
Step S3：Lift profiled sheeting and steel plate successively in the inner side of furnace wall plate, filling is reserved between furnace wall plate and profiled sheeting
The spacing of insulation material, the spacing of filling petroleum coke is reserved between profiled sheeting and steel plate, is fixed into template and steel plate respectively；
Step S4：Petroleum coke, compacting are laid on the top of carbon black；
Step S5：Calcined coke is laid on the top of petroleum coke；
Step S6：Negative material raw material is filled in crucible, the first crucible is placed on to the top of calcined coke, first
Calcined coke is laid and filled respectively to the top of crucible and the week side of boss；
Step S7：Second crucible is placed on to the top of calcined coke, spread respectively on the top of the second crucible and the week side of boss
If with filling calcined coke, the repeated several times step, the combustion chamber requirement up to reaching design；
Step S8：Petroleum coke is laid and filled respectively between the top of calcined coke and profiled sheeting and steel plate, is tamped, will
Steel plate detaches；
Step S9：Profiled sheeting is laid on the top of petroleum coke, petroleum coke is completely covered；
Step S10：Insulation material is laid and filled respectively between the top of profiled sheeting and furnace wall plate and profiled sheeting；
Step S11：Shove charge finishes, site clearing, checks circuit, sets heating curve, calculates turn on angle, and be powered rises
Temperature.
The charging technique of the acheson furnace of above-mentioned production graphite negative electrodes material, it is further comprising the steps of：Quartz sand 6 with
Metallurgical char particle is laid between carbon black 7.
Charging technique need to strictly observe the design requirement of body of heater, installed or laid according to amount in order, it is to product
Quality and energy consumption etc. play the role of important.
Exemplified by laying two crucibles, furnace binding and charging technique to the present invention describe in detail as follows.
Embodiment 1
This embodiment offers a kind of acheson furnace for producing graphite negative electrodes material, including by furnace foundation bottom 1, burner wall
2nd, the body of heater that stove tail wall 3 and furnace wall plate 4 surround, body of heater is symmetrical with the central axis of burner wall 2 and stove tail wall 3, burner
Conductive electrode 5 is set respectively in wall 2 and stove tail wall 3, and the top at furnace foundation bottom 1 from bottom to top sets gradually the He of quartz sand layer 6
Silica aerogel layer 7, the top of silica aerogel layer 7 set combustion chamber, combustion chamber include some crucibles, the calcined coke layer 9 for being arranged on crucible outer surface,
And the oil focus layer 8 of the outer surface of calcined coke layer 9 is arranged on, the top of combustion chamber and side set profiled sheeting 11, the top of profiled sheeting 11
Portion and side set adiabator layer 12, and the top of body of heater sets gas skirt 13.
In the embodiment, the thickness of oil focus layer 8 is 700 millimeters, the calcined coke layer 9 of the top and bottom laying of crucible
Thickness is 150 millimeters, and the thickness of adiabator layer 12 at the top of profiled sheeting 11 is 800 millimeters, the thermal insulating material of the side of profiled sheeting 11
The thickness of the bed of material 12 is 600 millimeters.Crucible 10 is set two layers along the high direction of stove, and the interlamellar spacing of crucible 10 is 150 millimeters.Per crucible
10 set 23 rows along furnace superintendent direction, and six row are set along stove cross direction；Gap spacing between the row and row of crucible 10 is 60
Millimeter, gap spacing between the column and the column is 10 millimeters.
A kind of charging technique for acheson furnace for producing graphite negative electrodes material that the embodiment is provided, including following step
Suddenly：
Step S1：Lay quartz sand, metallurgical char particle, carbon black successively on furnace foundation bottom, tamp；
Step S2：Lifting and stationary furnace wallboard, the side of body of heater is closed；
Step S3：Lift profiled sheeting and steel plate successively in the inner side of furnace wall plate, filling is reserved between furnace wall plate and profiled sheeting
The spacing of insulation material, the spacing of filling petroleum coke is reserved between profiled sheeting and steel plate, is fixed into template and steel plate respectively；
Step S4：Petroleum coke, compacting are laid on the top of carbon black；
Step S5：Calcined coke is laid on the top of petroleum coke；
Step S6：Negative material raw material is filled in crucible, the first crucible is placed on to the top of calcined coke, first
Calcined coke is laid and filled respectively to the top of crucible and the week side of boss；
Step S7：Second crucible is placed on to the top of calcined coke, spread respectively on the top of the second crucible and the week side of boss
And if filling calcined coke；
Step S8：Petroleum coke is laid and filled respectively between the top of calcined coke and profiled sheeting and steel plate, is tamped, will
Steel plate detaches；
Step S9：Profiled sheeting is laid on the top of petroleum coke, petroleum coke is completely covered；
Step S10：Insulation material is laid and filled respectively between the top of profiled sheeting and furnace wall plate and profiled sheeting；
Step S11：Shove charge finishes, site clearing, checks circuit, sets heating curve, calculates turn on angle, and be powered rises
Temperature.
The present invention is detected to the main performance of products obtained therefrom negative material and carburant.
The negative material end properties index of the present invention of table 1
| Technical indicator | Negative material of the present invention |
| Degree of graphitization (%) | 93.1~95.0 |
| Compacted density（g/cm3） | ≥1.65 |
| Fixed carbon content (%) | ≥99.98 |
| Type | Delanium class |
The property indices of carburant meet the associated specifications of YB/T 4403-2014 graphitization carburants, Gu
Carbon content is determined more than 99.5%, and sulphur content is 0.03% or so.
Table 2 is of the invention with the technics comparing of traditional acheson furnace
| Technical indicator | The present invention | Traditional acheson furnace |
| Ton product power consumption, kWh/t | 4500~5500 | 10000~12000 |
| Combustion chamber temperature, DEG C | More than 3000 degree | 2000~3000 |
| Come out of the stove the time, day | 10 days | 15 ~ 20 days |
| Carburant yield, t/ stoves | 340~360 | 40~50 |
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, this area is common
Other modifications or equivalent substitution that technical staff is made to technical scheme, without departing from technical solution of the present invention
Spirit and scope, all should cover among scope of the presently claimed invention.
Claims (6)
1. a kind of acheson furnace for producing graphite negative electrodes material, including by furnace foundation bottom, burner wall, stove tail wall and furnace wall plate
The body of heater surrounded, the body of heater is symmetrical with the central axis of the burner wall and stove tail wall, the burner wall and stove tail
Conductive electrode is set respectively in wall, it is characterised in that：The top at the furnace foundation bottom from bottom to top set gradually quartz sand layer and
Silica aerogel layer, the top of the silica aerogel layer set combustion chamber, and the combustion chamber includes some crucibles, is arranged on the crucible outer surface
Calcined coke layer and the oil focus layer for being arranged on the calcined coke layer outer surface, the top of the combustion chamber and side set profiled sheeting,
The top of the profiled sheeting and side set adiabator layer, and the top of the body of heater sets gas skirt, loaded in the crucible
Negative material raw material, the thickness of the oil focus layer is 600 ~ 800 millimeters, the calcined coke of the top and bottom laying of the crucible
The thickness of layer is 150 millimeters, and the furnace wall plate is fixed by some furnace stays, and the furnace wall plate includes wallboard body,
The wallboard body is refractory product, and double layer bar is set in the wallboard body, is set between the double layer bar
Support member is put, the wallboard body, which is set, dissipates vent hole, and the top of the wallboard body sets link, the side of the wallboard body
Face sets L-type to link up with,
The charging technique of the acheson furnace of the production graphite negative electrodes material, comprises the following steps：
Step S1：Lay quartz sand and carbon black successively on furnace foundation bottom, tamp；
Step S2：Lifting and stationary furnace wallboard, the side of body of heater is closed；
Step S3：Lift profiled sheeting and steel plate successively in the inner side of the furnace wall plate, reserved between the furnace wall plate and profiled sheeting
The spacing of insulation material is filled, the spacing of filling petroleum coke is reserved between the profiled sheeting and steel plate, fixes the shaping respectively
Plate and steel plate；
Step S4：Petroleum coke, compacting are laid on the top of the carbon black；
Step S5：Calcined coke is laid on the top of the petroleum coke；
Step S6：Negative material raw material is filled in crucible, the first crucible is placed on to the top of the calcined coke, described
Calcined coke is laid and filled respectively to the top of first crucible and the week side of boss；
Step S7：Second crucible is placed on to the top of the calcined coke, on the top of second crucible and the week side of boss point
And calcined coke, the repeated several times step Pu She not be filled, until reaching the combustion chamber requirement of design；
Step S8：Petroleum coke is laid and filled respectively between the top of the calcined coke and the profiled sheeting and steel plate, is rammed
It is real, steel plate is detached；
Step S9：Profiled sheeting is laid on the top of the petroleum coke, the petroleum coke is completely covered；
Step S10：Insulation is laid and fills respectively between the top of the profiled sheeting and the furnace wall plate and the profiled sheeting
Material；
Step S11：Shove charge finishes, site clearing, checks circuit, sets heating curve, calculates turn on angle, carries out energization heating.
2. the acheson furnace of production graphite negative electrodes material as claimed in claim 1, it is characterised in that：The quartz sand layer with
Metallurgical coke granulosa is set between the silica aerogel layer.
3. the acheson furnace of production graphite negative electrodes material as claimed in claim 1, it is characterised in that：The crucible is along stove height
Direction is set two layers, and the interlamellar spacing of the crucible is 150 millimeters, and every layer of crucible is along furnace superintendent direction at least provided with two rows, edge
Stove cross direction is 60 millimeters with the gap spacing of row at least provided with two row, the row of the crucible, and the gap spacing of row and row is 10
Millimeter.
4. the acheson furnace of production graphite negative electrodes material as claimed in claim 3, it is characterised in that：The row of the crucible with
Gap filling calcined coke between row and between the column and the column.
5. the acheson furnace of production graphite negative electrodes material as claimed in claim 1, it is characterised in that：At the top of the profiled sheeting
Adiabator layer thickness be 600 ~ 1000 millimeters, the adiabator layer thickness of the profiled sheeting side is 600 millimeters.
6. the acheson furnace of production graphite negative electrodes material as claimed in claim 1, it is characterised in that：The gas skirt is recessed
To the arcuate structure of the body of heater, the maximum secting area of the gas skirt is more than any cross-sectional area of the body of heater.
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| CN106006612B (en) * | 2016-05-19 | 2018-01-23 | 大同新成新材料股份有限公司 | A kind of method and device for preventing that silicon soaks in carbon product graphitizing process |
| CN108439392A (en) * | 2018-03-06 | 2018-08-24 | 大同新成新材料股份有限公司 | A kind of low energy consumption lithium battery graphite cathode material purifying plant and its manufacture craft |
| CN108423674B (en) * | 2018-05-23 | 2019-05-17 | 大同新成新材料股份有限公司 | A kind of low energy consumption lithium battery graphite cathode material purifying technique |
| CN109626369A (en) * | 2019-01-31 | 2019-04-16 | 吴建云 | A kind of application of graphitizing furnace about roasting technique |
| CN113943000A (en) * | 2021-11-22 | 2022-01-18 | 胡广林 | Box-type furnace upright column, box-type furnace and furnace charging process of box-type furnace |
| 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 |
| WO2024044845A1 (en) * | 2022-08-30 | 2024-03-07 | Nouveau Monde Graphite Inc. | Furnace for producing a graphite product |
| CN116281995B (en) * | 2023-03-22 | 2024-01-30 | 宁夏碳谷能源科技股份有限公司 | Graphitization pretreatment method for negative electrode material |
| CN116136362A (en) * | 2023-04-04 | 2023-05-19 | 沈阳铝镁设计研究院有限公司 | Graphitization furnace for producing lithium battery cathode material |
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| CN1834205B (en) * | 2006-04-12 | 2011-09-14 | 元氏县槐阳碳素有限公司 | Process for producing graphitizing petrol coke by Acheson graphitizing furnace |
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