CN105502362A - Acheson furnace for producing graphite anode materials and furnace charging technology of furnace - Google Patents
Acheson furnace for producing graphite anode materials and furnace charging technology of furnace Download PDFInfo
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- CN105502362A CN105502362A CN201510996092.8A CN201510996092A CN105502362A CN 105502362 A CN105502362 A CN 105502362A CN 201510996092 A CN201510996092 A CN 201510996092A CN 105502362 A CN105502362 A CN 105502362A
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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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Abstract
The invention provides an Acheson furnace for producing graphite anode materials and a furnace charging technology of the furnace, and belongs to the technical field of anode material preparation. The Acheson furnace for producing the graphite anode materials comprises a furnace body formed by a furnace base, a furnace head wall, a furnace tail wall and furnace wall plates in an enclosing mode; a quartz sand layer and a carbon black layer are sequentially arranged on the upper portion of the furnace base from bottom to top, a furnace core is arranged on the upper portion of the carbon black layer, the furnace core comprises multiple layers of crucibles, a calcined coke layer arranged on the outer surfaces of the crucibles and a petroleum coke layer arranged on the outer surface of the calcined coke layer, forming plates are arranged on the top and the side faces of the furnace core, a thermal insulation material layer is arranged on the top and the side faces of the forming plates, and a gas-collecting hood is arranged on the top of the furnace body. According to the Acheson furnace for producing the graphite anode materials and the furnace charging technology of the furnace, the furnace core of the Acheson furnace can reach higher temperature, the graphitization degree of the products is higher, power consumption for obtaining each ton of the anode materials is reduced, the yield of carburant is doubled, cooling of the furnace body is rapid, product discharge is rapid, and the environmental protecting and energy saving effects are significant.
Description
Technical field
The invention belongs to negative material preparing technical field, be specifically related to a kind of acheson furnace and charging technique thereof of producing graphite negative electrodes material.
Background technology
Lithium ion battery is the representative of contemporary heavy-duty battery, is a kind of New Green Energy product-derived, is widely used in information, telecommunication and power industry.With the development of international productivity, the quick consumption of petroleum resources, the environmental problem caused by pollution that city great amount of fuel oil vehicle exhaust produces becomes increasingly conspicuous, and for really solving the tail gas pollution of automobile, the cry of development zero release electric vehicle is more and more higher.The key of electric vehicle performance is battery, and lithium ion battery is the ideal source of electric vehicle.The raising of lithium ion battery negative material to performance of lithium ion battery plays vital effect.Current commodity lithium ion battery extensively adopts carbon negative pole material.Wherein, graphite negative electrodes material is with its wide material sources, and stable performance, several large advantage such as energy-conserving and environment-protective becomes the main Types of carbon negative pole material.The production process of graphite negative electrodes material comprises selection, nodularization, coated, charing and greying, and greying is one important procedure in synthetic graphite class negative material production process.At present, what most of traditional method was taked is that acheson furnace is to process synthetic graphite class negative material.
19 end of the centurys acheson furnace transformed on the resistance furnace substrate plinth producing silicon carbide, its principal feature is that the negative material raw material loaded in stove jointly forms stove with resistance material (burnt grain) and hinder, and the high temperature of the rear generation 2000 ~ 3000 DEG C that is energized makes negative material raw graphite.The principle of acheson furnace flows through stove internal resistance material by electric current and makes resistance material produce a large amount of heat energy (usual resistance material need reach the high temperature of about 3000 degree), and then by thermal energy transfer to product, finally realize product greying.Tradition uses acheson furnace processing negative material to need power transmission 35 ~ 60 hours, and the power consumption of product per ton is at 15000 ~ 16000 degree, and electric unit consumption is high, and environmental pollution is larger; Meanwhile, owing to limiting by self processing mode, acheson furnace the upper and lower temperature distributing disproportionation is even, easily causes the inequality of being heated of product in graphitizing process to cause its degree of graphitization uneven, thus affects quality product.Application number be 201510562328.7 patent discloses a kind of lithium cell cathode material graphitizing furnace, comprise by fire-resistant concrete burner body of wall, the rectangle body of heater that fire-resistant concrete stove tail body of wall and the fire-resistant concrete wall in both sides surround, burner body of wall and stove tail body of wall are provided with conductive electrode, conductive electrode one end stretches to furnace interior, one end reaches burner body of wall, stove tail wall Ligation in vitro power supply, carbon slab casing is provided with in rectangle body of heater, described carbon slab casing comprises the graphite block wall one at two ends, the carbon slab wall of both sides, upper carbon slab layer, lower carbon slab layer, and the charcoal block heat generating core be arranged in carbon slab casing, this invention, based on acheson furnace, arranges carbon slab casing in stove, utilizes the charcoal block heat generating core heating be arranged in carbon slab casing, reaches reduction energy consumption, improve the object of production capacity, the invention provides a kind of graphitizing furnace of different structure, and use this graphitizing furnace to carry out the production of lithium cell cathode material.
The industrial application T&B of acheson furnace, current China still generally applies.The feature of this stove is that structure is simple, and sturdy and durable, easily keep in repair, be greying equipment main in carbon industry always.However, also there is many problems in acheson graphite metallization processes, and current graphitizing furnace uses merely calcined coke as resistance material mostly, but calcined coke can not contact with water, cause the type of cooling limited, can only naturally cooling be adopted, cooling is slow, extends the time of coming out of the stove; Next is that calcined coke exists the large and heavy-polluted problem of loss, and operation process is not easy to control; And after pyroprocessing, the quality of byproduct-carburelant that calcined coke is corresponding is lower.In actual production, the loading amount of calcined coke only reaches about 1/3 of body of heater volume, causes the output of the auxiliary material of single stove gained lower, and quality is unstable.
Summary of the invention
Technical problem to be solved by this invention is, for the deficiencies in the prior art, provides the acheson furnace for the production of graphite negative electrodes material of the low and constant product quality of a kind of fast, single power consumption of lowering the temperature.
Present invention also offers a kind of charging technique of producing the acheson furnace of graphite negative electrodes material.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of acheson furnace producing graphite negative electrodes material, comprise by the bottom of furnace foundation, burner body of wall, the body of heater that stove tail body of wall and furnace wall plate surround, described body of heater is symmetrical with the central axis of described burner body of wall and stove tail body of wall, in described burner body of wall and stove tail body of wall, conductive electrode is set respectively, top at the bottom of described furnace foundation from bottom to top sets gradually quartz sand layer and silica aerogel layer, the top of described silica aerogel layer arranges combustion chamber, described combustion chamber comprises some crucibles, be arranged on the calcined coke layer of described crucible outside surface, and be arranged on the oil focus layer of described calcined coke layer outside surface, template is arranged in top and the side of described combustion chamber, top and the side of described profiled sheeting arrange adiabator layer, the top of described body of heater arranges gas skirt.
Further, between described quartz sand layer and described silica aerogel layer, metallurgical coke granulosa is set.
Further, described crucible arranges two-layer along stove height direction, the interlamellar spacing of described crucible is 150 millimeters, every layer of described crucible at least arranges two row along furnace superintendent direction, along stove cross direction, two row are at least set, the row of described crucible is 60 millimeters with the gap spacing of row, and row are 10 millimeters with the gap spacing of row.
Further, between the row of described crucible and row and gap filling calcined coke between the column and the column.
Further, the thickness of described oil focus layer is 600 ~ 800 millimeters, the thickness of the calcined coke layer that the top of described crucible and bottom are laid is 150 millimeters, and the lagging material layer thickness at described profiled sheeting top is 600 ~ 1000 millimeters, and the lagging material layer thickness of described profiled sheeting side is 600 millimeters.
Further, described furnace wall plate comprises wallboard body, described wallboard body is refractory product, in described wallboard body, double layer bar is set, between described double layer bar, strut member is set, described wallboard body arranges loose vent hole, and the top of described wallboard body arranges link, and the side of described wallboard body arranges L-type hook.
Further, described gas skirt is the recessed arcuate structure to described body of heater, and the maximum secting area of described gas skirt is greater than arbitrary cross-sectional area of described body of heater.
Produce a charging technique for the acheson furnace of graphite negative electrodes material, comprise the following steps:
Step S1: lay quartz sand and carbon black successively at the bottom of furnace foundation, compacting;
Step S2: lifting and stationary furnace wallboard, closes the side of body of heater;
Step S3: lift profiled sheeting and steel plate successively in the inner side of described furnace wall plate, the spacing of reserved fill insulant material between described furnace wall plate and profiled sheeting, between described profiled sheeting and steel plate, the spacing of reserved filled stone oil coke, fixes described profiled sheeting and steel plate respectively;
Step S4: lay refinery coke on the top of described carbon black, compacting;
Step S5: lay calcined coke on the top of described refinery coke;
Step S6: be filled in crucible by negative material raw material, is placed on the top of described calcined coke by the first layer crucible, lay respectively on the top of described the first layer crucible and all sides and fill calcined coke;
Step S7: top second layer crucible being placed on described calcined coke, lays respectively on the top of described second layer crucible and all sides and fills calcined coke, this step of repeated several times, until the combustion chamber requirement reaching design;
Step S8: lay respectively and filled stone oil coke on the top of described calcined coke and between described profiled sheeting and steel plate, compacting, detaches steel plate;
Step S9: be laid to template on the top of described refinery coke, covers completely by described refinery coke;
Step S10: lay respectively and fill insulant material on the top of described profiled sheeting and between described furnace wall plate and described profiled sheeting;
Step S11: shove charge is complete, site clearing, checks circuit, and setting heating curve, calculates turn on angle, carries out energising and heats up.
Compared with prior art, beneficial effect of the present invention is as follows:
The present invention is by foregoing, and provide a kind of cooling fast, unit product power consumption is low, the acheson furnace of the production graphite negative electrodes material of constant product quality.Be employed herein refinery coke, and carry out laying or filling around calcined coke, when product is come out of the stove, calcined coke avoids and extraneous contact, thus by the mode of traditional single employing naturally cooling, change into the mode that Water spray can be adopted to cool, cooling is accelerated, shorten the time of coming out of the stove, the product production of unit time is increased; Secondly by the interaction between layers of material in body of heater, add strict charging technique, make the temperature of combustion chamber can reach more than 3000 DEG C, the quality of negative material is more excellent; And oil focus layer 8 is as the raw material producing carburelant, by pyroprocessing, the properties of gained carburelant is better, and quality is more excellent; After adopting furnace binding of the present invention, under the prerequisite ensureing furnace temperature and negative material output, the batch of calcined coke and oil focus layer 8 increases, it is double that carburelant output compares traditional technology, for factory adds benefit, simultaneously, compare traditional technology, the power consumption of unit of the present invention (ton) product significantly reduces, and maintain ton power consumption about 5000 degree, energy-saving effect is remarkable.
Graphitizing furnace of the present invention is adopted to produce lithium cell cathode material, combustion chamber can reach higher temperature, the degree of graphitization of negative material raw material, calcined coke and oil focus layer 8 is higher, the performance of negative material finished product and carburelant is better, the ton power consumption of negative material finished product is reduced to traditional about 1/3, and the output of carburelant is double, and body of heater cooling is fast, come out of the stove fast, environmental protection and energy saving Be very effective.
Accompanying drawing explanation
Fig. 1: a kind of structural representation producing the acheson furnace of graphite negative electrodes material of the present invention;
Fig. 2: the sectional view of Fig. 1 of the present invention;
The A-A sectional view of Fig. 3: Fig. 2 of the present invention;
The B-B sectional view of Fig. 4: Fig. 3 of the present invention;
Fig. 5: the sectional view of furnace wall plate in Fig. 1 of the present invention;
Wherein, at the bottom of 1-furnace foundation, 2-burner body of wall, 3-stove tail body of wall, 4-furnace wall plate, 5-conductive electrode, 6-quartz sand layer, 7-silica aerogel layer, 8-oil focus layer, 9-calcined coke layer, 10-crucible, 11-profiled sheeting, 12-adiabator layer, 13-gas skirt, 14-pad, 15-Graphite Powder 99,16-refractory brick, 17-furnace stay, 18-gas recovery house steward, 19-collection and confinement of gases pipeline.
Embodiment
In order to understand the present invention better, set forth content of the present invention below in conjunction with embodiment is clear further, but protection content of the present invention is not only confined to the following examples.In the following description, a large amount of concrete details is given to provide more thorough understanding of the invention.But, it will be apparent to one skilled in the art that the present invention can be implemented without the need to these details one or more.In other example, in order to avoid obscuring with the present invention, technical characteristics more well known in the art are not described.
Consult Fig. 1 ~ Fig. 4, a kind of acheson furnace producing graphite negative electrodes material of the present invention, comprise by the bottom of furnace foundation 1, burner body of wall 2, the body of heater that stove tail body of wall 3 and furnace wall plate 4 surround, body of heater is symmetrical with the central axis of burner body of wall 2 and stove tail body of wall 3, in burner body of wall 2 and stove tail body of wall 3, conductive electrode 5 is set respectively, the top of 1 at the bottom of furnace foundation from bottom to top sets gradually quartz sand layer 6 and silica aerogel layer 7, the top of silica aerogel layer 7 arranges combustion chamber, combustion chamber comprises some crucibles, be arranged on the calcined coke layer 9 of crucible outside surface, and be arranged on the oil focus layer 8 of calcined coke layer 9 outside surface, template 11 is arranged in the top of combustion chamber and side, the top of profiled sheeting 11 and side arrange adiabator layer 12, the top of body of heater arranges gas skirt 13.
In the present invention, burner body of wall 2 and stove tail body of wall 3 are made up of conductive electrode 5, pad 14, Graphite Powder 99 15 and refractory brick 16 respectively, pad 14 is graphited graphite block, it is capable that conductive electrode 5 arranges m along stove cross direction, arrange n row along stove height direction, m and n is the integer being more than or equal to 1, preferably, m gets 4, n and gets 3; Between every two conductive electrodes 5, pad 14 is set, conductive electrode 5 near combustion chamber side protrudes pad 141 ~ 2 centimetres, conductive electrode 5 is equal with the height of pad 14, width is not etc., the length of conductive electrode 5 is greater than the length of pad 14, conductive electrode 5 is reinforced by refractory brick 16 away from the side of combustion chamber, is filled with Graphite Powder 99 15 in the space that conductive electrode 5, pad 14 and refractory brick 16 surround.
Consult Fig. 5, furnace wall plate 4 is fixed by some furnace stays 17, wherein, furnace wall plate 4 comprises wallboard body 4-1, and wallboard body is refractory product, arranges double layer bar 4-2 in wallboard body, strut member 4-3 is set between double layer bar, wallboard body arranges loose vent hole 4-4, and the top of wallboard body arranges link 4-5, and the side of wallboard body arranges L-type hook 4-6.Wherein, wallboard body is refractory product, for the major support members of furnace wall plate 4, inner employing double layer bar, and between double-layer network, rely on triangular support part to connect, first double layer bar adds the resistance to cleavage of wallboard body, the lateral pressure preventing wallboard body larger damages furnace wall plate, the support performance of triangular support part is far better than the support performance of a reinforcing bar, the connection of double layer bar can be strengthened, prevent larger side to the deformation of reinforcing mat under pressure, improve larger to the ultimate compression strength of furnace wall plate and tensile strength; Loose vent hole is convenient to discharge and the collection of fugitive constituent in body of heater, and link facilitates the movement of furnace wall plate, and weight handling equipment can directly be moved by link furnace wall plate of slinging; The opening of L-type hook down, being convenient to the lifting of furnace wall plate, being played the effect of balanced support when not put into by body of heater material, facilitates putting into of the installation of body of heater and material.
Preferred in the present invention, between quartz sand layer 6 and silica aerogel layer 7, lay metallurgical coke granulosa.
The thickness of oil focus layer 8 is 600 ~ 800 millimeters, the thickness of the calcined coke layer 9 that the top of crucible and bottom are laid is 150 millimeters, adiabator layer 12 thickness at profiled sheeting 11 top is 600 ~ 1000 millimeters, and adiabator layer 12 thickness of profiled sheeting 11 side is 600 millimeters.Practice shows, in body of heater, the laying order of subsidiary material used and the structure of thickness on body of heater have remarkably influenced, and then have an impact to the temperature of body of heater, the quality of product and output, production efficiency and energy consumption etc.Therefore, need when shove charge to carry out operation in strict accordance with design requirements.
Crucible used in the present invention is hollow cylindrical body, for carbon materials is formed after pyroprocessing.Its inside and outside must be cleaned out by crucible before use, need to pay special attention to avoid entering in the impurity such as the ash content of crucible outside, moisture before, during and after charging.In crucible, the concrete steps of splendid attire negative material raw material are: 1. clear up crucible: the foreign material that thoroughly cleaning crucible is inner and outside, keep the clean clean of crucible; 2. feed: negative material raw material is loaded crucible inner, in the process, with light packs, put down gently, prevent crucible to be destroyed, after charging, the lid of the crucible of good for splendid attire negative material raw material is covered; 3. numbering, record: be numbered by the complete crucible of charging, and record, can carry out shove charge.
In the present invention, crucible 10 arranges two-layer along stove height direction, and the interlamellar spacing of crucible 10 is 150 millimeters.
Every crucible 10 at least arranges two row along furnace superintendent direction, at least arranges two row along stove cross direction, and the gap spacing between the row of crucible 10 and row is 60 millimeters, and gap spacing is between the column and the column 10 millimeters.
Such as, consult Fig. 3, every crucible 10 arranges 23 row along furnace superintendent direction, arranges six row along stove cross direction; Gap spacing between the row of crucible 10 and row is 60 millimeters, and gap spacing is between the column and the column 10 millimeters.
In the present invention, gap filling calcined coke between the row of crucible 10 and row and between the column and the column.
The source of the present invention to quartz sand, carbon black, refinery coke, calcined coke, lagging material, negative material raw material and metallurgical coke grain there is no particular restriction, can be generally commercially available, and the raw material be well known to the skilled person.Lagging material can adopt the mixture of metallurgical coke grain and quartz sand, can Reusability; Negative material raw material can adopt ash content few, and moisture is few, easy conductive, the material of ultra-fine high-carbon, and concrete can adopt carbosphere material, needle coke, pitch coke or natural graphite.
Gas skirt 13 is the recessed arcuate structure to body of heater, and the maximum secting area of gas skirt 13 is greater than arbitrary cross-sectional area of body of heater.Concrete, the top of gas skirt 13 arranges the collection and confinement of gases pipeline 19 be connected with gas recovery house steward 18; Gas skirt 13 is high temperature resistant product, and be provided with some gas suction ports, gas suction port communicates with collection and confinement of gases pipeline 19, and gas recovery house steward 18 is connected with negative pressure unit.
The invention provides a kind of charging technique of producing the acheson furnace of graphite negative electrodes material, comprise the following steps:
Step S1: lay quartz sand and carbon black successively at the bottom of furnace foundation, compacting;
Step S2: lifting and stationary furnace wallboard, closes the side of body of heater;
Step S3: lift profiled sheeting and steel plate successively in the inner side of furnace wall plate, the spacing of reserved fill insulant material between furnace wall plate and profiled sheeting, between profiled sheeting and steel plate, the spacing of reserved filled stone oil coke, is fixed into template and steel plate respectively;
Step S4: lay refinery coke on the top of carbon black, compacting;
Step S5: lay calcined coke on the top of refinery coke;
Step S6: be filled in crucible by negative material raw material, is placed on the top of calcined coke by the first layer crucible, lay respectively on the top of the first layer crucible and all sides and fill calcined coke;
Step S7: top second layer crucible being placed on calcined coke, lays respectively on the top of second layer crucible and all sides and fills calcined coke, this step of repeated several times, until the combustion chamber requirement reaching design;
Step S8: lay respectively and filled stone oil coke on the top of calcined coke and between profiled sheeting and steel plate, compacting, detaches steel plate;
Step S9: be laid to template on the top of refinery coke, refinery coke is covered completely;
Step S10: lay respectively and fill insulant material on the top of profiled sheeting and between furnace wall plate and profiled sheeting;
Step S11: shove charge is complete, site clearing, checks circuit, and setting heating curve, calculates turn on angle, carries out energising and heats up.
The charging technique of the acheson furnace of above-mentioned production graphite negative electrodes material, further comprising the steps of: between quartz sand 6 and carbon black 7, to lay metallurgical coke grain.
Charging technique need strictly observe the design requirements of body of heater, and carry out installing or laying according to amount in order, it has important effect to the quality of product and energy consumption etc.
To lay two crucibles, furnace binding of the present invention and charging technique are described in detail as follows.
Embodiment 1
This embodiment offers a kind of acheson furnace producing graphite negative electrodes material, comprise by the bottom of furnace foundation 1, burner body of wall 2, the body of heater that stove tail body of wall 3 and furnace wall plate 4 surround, body of heater is symmetrical with the central axis of burner body of wall 2 and stove tail body of wall 3, in burner body of wall 2 and stove tail body of wall 3, conductive electrode 5 is set respectively, the top of 1 at the bottom of furnace foundation from bottom to top sets gradually quartz sand layer 6 and silica aerogel layer 7, the top of silica aerogel layer 7 arranges combustion chamber, combustion chamber comprises some crucibles, be arranged on the calcined coke layer 9 of crucible outside surface, and be arranged on the oil focus layer 8 of calcined coke layer 9 outside surface, template 11 is arranged in the top of combustion chamber and side, the top of profiled sheeting 11 and side arrange adiabator layer 12, the top of body of heater arranges gas skirt 13.
In this embodiment, the thickness of oil focus layer 8 is 700 millimeters, the thickness of the calcined coke layer 9 that the top of crucible and bottom are laid is 150 millimeters, and adiabator layer 12 thickness at profiled sheeting 11 top is 800 millimeters, and adiabator layer 12 thickness of profiled sheeting 11 side is 600 millimeters.Crucible 10 arranges two-layer along stove height direction, and the interlamellar spacing of crucible 10 is 150 millimeters.Every crucible 10 arranges 23 row along furnace superintendent direction, arranges six row along stove cross direction; Gap spacing between the row of crucible 10 and row is 60 millimeters, and gap spacing is between the column and the column 10 millimeters.
A kind of charging technique of producing the acheson furnace of graphite negative electrodes material that this embodiment provides, comprises the following steps:
Step S1: lay quartz sand, metallurgical coke grain, carbon black at the bottom of furnace foundation successively, compacting;
Step S2: lifting and stationary furnace wallboard, closes the side of body of heater;
Step S3: lift profiled sheeting and steel plate successively in the inner side of furnace wall plate, the spacing of reserved fill insulant material between furnace wall plate and profiled sheeting, between profiled sheeting and steel plate, the spacing of reserved filled stone oil coke, is fixed into template and steel plate respectively;
Step S4: lay refinery coke on the top of carbon black, compacting;
Step S5: lay calcined coke on the top of refinery coke;
Step S6: be filled in crucible by negative material raw material, is placed on the top of calcined coke by the first layer crucible, lay respectively on the top of the first layer crucible and all sides and fill calcined coke;
Step S7: top second layer crucible being placed on calcined coke, lays respectively on the top of second layer crucible and all sides and fills calcined coke;
Step S8: lay respectively and filled stone oil coke on the top of calcined coke and between profiled sheeting and steel plate, compacting, detaches steel plate;
Step S9: be laid to template on the top of refinery coke, refinery coke is covered completely;
Step S10: lay respectively and fill insulant material on the top of profiled sheeting and between furnace wall plate and profiled sheeting;
Step S11: shove charge is complete, site clearing, checks circuit, and setting heating curve, calculates turn on angle, carries out energising and heats up.
The salient features of the present invention to products obtained therefrom negative material and carburelant detects.
Table 1 negative material end properties of the present invention index
| Technical indicator | Negative material of the present invention |
| Degree of graphitization (%) | 93.1~95.0 |
| Compacted density (g/cm 3） | ≥1.65 |
| Fixed carbon content (%) | ≥99.98 |
| Type | Synthetic graphite class |
The property indices of carburelant meets the associated specifications of YB/T4403-2014 greying carburelant, and fixed carbon content is more than 99.5%, and sulphur content is about 0.03%.
The technics comparing of table 2 the present invention and traditional acheson furnace
| Technical indicator | The present invention | Tradition 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, sky | 10 days | 15 ~ 20 days |
| Carburelant output, t/ stove | 340~360 | 40~50 |
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, other amendments that those of ordinary skill in the art make technical scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (8)
1. produce the acheson furnace of graphite negative electrodes material for one kind, comprise by the bottom of furnace foundation, burner body of wall, the body of heater that stove tail body of wall and furnace wall plate surround, described body of heater is symmetrical with the central axis of described burner body of wall and stove tail body of wall, in described burner body of wall and stove tail body of wall, conductive electrode is set respectively, it is characterized in that: the top at the bottom of described furnace foundation from bottom to top sets gradually quartz sand layer and silica aerogel layer, the top of described silica aerogel layer arranges combustion chamber, described combustion chamber comprises some crucibles, be arranged on the calcined coke layer of described crucible outside surface, and be arranged on the oil focus layer of described calcined coke layer outside surface, template is arranged in top and the side of described combustion chamber, top and the side of described profiled sheeting arrange adiabator layer, the top of described body of heater arranges gas skirt.
2. the acheson furnace producing graphite negative electrodes material as claimed in claim 1, is characterized in that: arrange metallurgical coke granulosa between described quartz sand layer and described silica aerogel layer.
3. the acheson furnace producing graphite negative electrodes material as claimed in claim 1, it is characterized in that: described crucible arranges two-layer along stove height direction, the interlamellar spacing of described crucible is 150 millimeters, every layer of described crucible at least arranges two row along furnace superintendent direction, along stove cross direction, two row are at least set, the row of described crucible is 60 millimeters with the gap spacing of row, and row are 10 millimeters with the gap spacing of row.
4. the acheson furnace producing graphite negative electrodes material as claimed in claim 3, is characterized in that: gap filling calcined coke between the row of described crucible and row and between the column and the column.
5. the acheson furnace producing graphite negative electrodes material as claimed in claim 1, it is characterized in that: the thickness of described oil focus layer is 600 ~ 800 millimeters, the thickness of the calcined coke layer that the top of described crucible and bottom are laid is 150 millimeters, the lagging material layer thickness at described profiled sheeting top is 600 ~ 1000 millimeters, and the lagging material layer thickness of described profiled sheeting side is 600 millimeters.
6. the acheson furnace producing graphite negative electrodes material as claimed in claim 1, it is characterized in that: described furnace wall plate comprises wallboard body, described wallboard body is refractory product, in described wallboard body, double layer bar is set, between described double layer bar, strut member is set, described wallboard body arranges loose vent hole, and the top of described wallboard body arranges link, and the side of described wallboard body arranges L-type hook.
7. the acheson furnace producing graphite negative electrodes material as claimed in claim 1, it is characterized in that: described gas skirt is the recessed arcuate structure to described body of heater, the maximum secting area of described gas skirt is greater than arbitrary cross-sectional area of described body of heater.
8. produce a charging technique for the acheson furnace of graphite negative electrodes material, it is characterized in that, comprise the following steps:
Step S1: lay quartz sand and carbon black successively at the bottom of furnace foundation, compacting;
Step S2: lifting and stationary furnace wallboard, closes the side of body of heater;
Step S3: lift profiled sheeting and steel plate successively in the inner side of described furnace wall plate, the spacing of reserved fill insulant material between described furnace wall plate and profiled sheeting, between described profiled sheeting and steel plate, the spacing of reserved filled stone oil coke, fixes described profiled sheeting and steel plate respectively;
Step S4: lay refinery coke on the top of described carbon black, compacting;
Step S5: lay calcined coke on the top of described refinery coke;
Step S6: be filled in crucible by negative material raw material, is placed on the top of described calcined coke by the first layer crucible, lay respectively on the top of described the first layer crucible and all sides and fill calcined coke;
Step S7: top second layer crucible being placed on described calcined coke, lays respectively on the top of described second layer crucible and all sides and fills calcined coke, this step of repeated several times, until the combustion chamber requirement reaching design;
Step S8: lay respectively and filled stone oil coke on the top of described calcined coke and between described profiled sheeting and steel plate, compacting, detaches steel plate;
Step S9: be laid to template on the top of described refinery coke, covers completely by described refinery coke;
Step S10: lay respectively and fill insulant material on the top of described profiled sheeting and between described furnace wall plate and described profiled sheeting;
Step S11: shove charge is complete, site clearing, checks circuit, and setting heating curve, calculates turn on angle, carries out energising and heats up.
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| 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 |
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