CN108866575A - The preparation method of graphite anode - Google Patents
The preparation method of graphite anode Download PDFInfo
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- CN108866575A CN108866575A CN201810689678.3A CN201810689678A CN108866575A CN 108866575 A CN108866575 A CN 108866575A CN 201810689678 A CN201810689678 A CN 201810689678A CN 108866575 A CN108866575 A CN 108866575A
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- square container
- net cage
- anode
- roll bending
- preparation
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
- C25C3/12—Anodes
- C25C3/125—Anodes based on carbon
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a kind of preparation methods of graphite anode.Including steps are as follows：Pretreatment 1-2 hours is carried out Step 1: the substandard product of prebaked anode is placed in graphitization pretreating device, obtains material A；It is concatenated Step 2: material A is placed in graphitizing furnace, and wrapped up the material A surrounding of concatenation with filler material, then in the absence of air conditions to material A energization 10-15 hours, material A energization heat production, so that in-furnace temperature is gradually risen to 2200-3000 DEG C by room temperature, obtains material B；Step 3: material B is cooling, it comes out of the stove to obtain graphite anode.The present invention is pre-processed by the way that the substandard product of prebaked anode to be placed in graphitization pretreating device, the acne of the substandard product surface scaling loss of prebaked anode can be effectively removed, and the residue protrusion and impurity of internal transverse fissure, be conducive to graphitization and improve real density and compressive resistance.
Description
Technical field
The present invention relates to the technical fields of graphite anode production, it is more particularly related to a kind of graphite anode
Preparation method.
Background technique
Power consumption is the maximum production cost of aluminum electrolysis producer.It influences the biggest factor and the cell construction of power consumption and matches
It sets and the quality of anode and cathode, structure and configured with direct relation.Work of the inherent quality of anode and cathode to electrolytic cell
The influence for making resistivity is one of its key factor, and graphitization cathode is the conductive material that aluminium electrolytic cell cathode uses, and is represent
The developing direction of aluminum electrolysis industry.With the technological progress and development of Aluminium Industry, electrolytic cell is to 300 kilowatts or more large capacities
Direction is developed, and the requirement to cathode material is higher.For producing the better graphitization cathode of quality, the high standard raw material used
It is crucial, and how obtains high standard raw material at low cost as current research puzzle.For the problem, the present inventor passes through
Further investigation discovery baked anode substandard product by pretreatment, then is graphitized the processing of shove charge power transmission, obtains resistivity
The excellent graphite anodes such as low, internal transverse fissure is few, and compressive resistance is high, and ash content is low, turn waste into wealth, and reduce in graphitization production process
Waste emission, reduce raw material production cost, realize reducing enterprise cost.And the graphite anode is also used as graphite cathode
Aggregate, for quickly producing the graphite cathode of high-quality.
Summary of the invention
It is an object of the invention to solve at least the above defect, and provide the advantages of at least will be described later.
In order to realize that these purposes and other advantages according to the present invention, the present invention provide a kind of preparation side of graphite anode
Method comprising steps are as follows：
Pretreatment 1-2 hours is carried out Step 1: the substandard product of prebaked anode is placed in graphitization pretreating device,
Obtain material A；
It concatenates Step 2: material A is placed in graphitizing furnace, and is wrapped up the material A surrounding of concatenation with filler material, then
In the absence of air conditions to material A energization 10-15 hours, material A energization heat production rises to in-furnace temperature gradually by room temperature
2200-3000 DEG C, obtain material B；
Step 3: material B is cooling, it comes out of the stove to obtain graphite anode.
Preferably, the condition that air is completely cut off in the step 2 is that will vacuumize in graphitizing furnace.
Preferably, the filler material is calcined coke particle.
Preferably, the graphitization pretreating device includes：
Upper opening square container is provided with entrance on the side wall of its underpart, and is correspondingly arranged on and can seal closing and enter and leave
The switch gate of mouth, the bottom of container is provided with water-inflow and drain valve door；
Multiple elasticity roll bendings, straggly on inner wall at left and right sides of the top of square container to be arranged alternately, the elasticity volume
Plate is the arc panel being bent upwards, and the chord length of arc panel is greater than the square container left side to the half of the right distance and is less than side
The device left side is described to 2/3rds of the right distance, the corresponding angle of the arc panel is greater than 100 ° less than 180 °；
Multiple vibrators are fixed on the lower section of the elastic roll bending；
The net cage of upper opening, the closely up and down ground activity of energy are embedded in the lower part of the square container；
The bottom of the square container is arranged in telescopic rod, and connect with the bottom of the net cage to push the net
Case moves up and down in the square container.
Preferably, in the lower part of the square container equipped with the naphtha for submerging the net cage.
Preferably, the upper opening of the square container is funnel inlet.
Preferably, the multiple elastic roll bending is four elastic roll bendings, straggly to be arranged alternately specially in square container
Top at left and right sides of wall be respectively arranged two, and from top to bottom, first elastic roll bending first is set in left side, then on right side
Second elastic roll bending is arranged in 10-20cm lower than first, then in the left side elastic roll bending of setting third 10- lower than second
Then the 4th elastic roll bending is arranged than the low 10-20cm of third on right side again in 20cm, the multiple vibrator is four vibrations
Device, fixes a vibrator below each elastic roll bending, the vibrator be located at the middle part of elastic roll bending to rectangular appearance
Between wall fixed point, and it is located among the antetheca and rear wall of square container.
Preferably, the upper surface of the elastic roll bending is provided with circular protrusions, and the side wall mesh of the net cage is triangle
Shape mesh, the bottom thickness of net cage are 0.5-2cm, and the mesh of bottom is bellmouth from lower to upper.Bellmouth makes on net cage
In lower motion process, bigger impact force is generated to the substandard product of prebaked anode, triangular mesh effectively prevent net cage to become
Shape reduces up and down motion obstacle, improves operational efficiency.
Preferably, the telescopic rod is telescopic magnetic rod, and the bottom of the net cage is made of soft magnetic material, so that
Telescopic magnetic rod net cage can be fixed and be played by magnetic force in the energized state pushing net cage in square container on
Lower movement.It is also possible that the substandard product of prebaked anode ceaselessly cutter activation atom in magnetic field environment, is conducive to stone
To Turbostratic to the transform in order of crystal structure of graphite during inkization.
Preferably, the substandard product of prebaked anode is placed in graphitization pretreating device in the step 1 and is carried out
Pretreated concrete operations are：The substandard product of prebaked anode is added to graphitization pre-treatment from the upper opening of square container
In device, enter in net cage after multiple elastic roll bendings constantly rub and collide to the substandard product of prebaked anode, by
Net cage drives the substandard product of prebaked anode ceaselessly to impregnate impact 1-2 hours in naphtha, then has a power failure to telescopic rod
And discharge filtration naphtha, then material A is taken out from the side wall entrance of square container.
The present invention is include at least the following beneficial effects：The present invention is by being placed in graphitization for the substandard product of prebaked anode
It is pre-processed in pretreating device, the acne of the substandard product surface scaling loss of prebaked anode and interior can be effectively removed
The residue protrusion and impurity of portion's transverse fissure, are conducive to graphitization and improve real density and compressive resistance.Then by pretreated material A
Carrying out concatenation energization heating reduces ash content and resistivity so that internal transverse fissure intensively merges, and improves compressive resistance.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of graphitization pretreating device of the invention.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
Embodiment 1
A kind of preparation method of graphite anode comprising steps are as follows：
Pretreatment 1 hour is carried out Step 1: the substandard product of prebaked anode is placed in graphitization pretreating device, is obtained
Material A；
It concatenates Step 2: material A is placed in graphitizing furnace, and is wrapped up the material A surrounding of concatenation with filler material, then
It is powered 10 hours to material A in the absence of air conditions, material A energization heat production rises to in-furnace temperature gradually by room temperature
2200 DEG C, obtain material B；
Step 3: material B is cooling, it comes out of the stove to obtain graphite anode.
Embodiment 2
A kind of preparation method of graphite anode comprising steps are as follows：
Pretreatment 2 hours is carried out Step 1: the substandard product of prebaked anode is placed in graphitization pretreating device, is obtained
Material A；
It concatenates Step 2: material A is placed in graphitizing furnace, and is wrapped up the material A surrounding of concatenation with calcined coke particle,
Then it is powered 15 hours after being vacuumized in graphitizing furnace to material A, material A energization heat production rises in-furnace temperature gradually by room temperature
To 3000 DEG C, material B is obtained；
Step 3: material B is cooling, it comes out of the stove to obtain graphite anode.
Embodiment 3
A kind of preparation method of graphite anode comprising steps are as follows：
Pretreatment 1.5 hours is carried out Step 1: the substandard product of prebaked anode is placed in graphitization pretreating device,
Obtain material A；
It concatenates Step 2: material A is placed in graphitizing furnace, and is wrapped up the material A surrounding of concatenation with calcined coke particle,
Then it is powered 10 hours after being vacuumized in graphitizing furnace to material A, material A energization heat production rises in-furnace temperature gradually by room temperature
To 2500 DEG C, material B is obtained；
Step 3: material B is cooling, it comes out of the stove to obtain graphite anode.
Embodiment 4
A kind of preparation method of graphite anode comprising steps are as follows：
Step 1: the substandard product of prebaked anode to be added to graphitization pretreating device from the upper opening of square container
In, enter in net cage after multiple elastic roll bendings constantly rub and collide to the substandard product of prebaked anode, by net cage
It drives the substandard product of prebaked anode ceaselessly to impregnate impact 2 hours in naphtha, then has a power failure and be discharged to telescopic rod
Then filtration naphtha takes out material A from the side wall entrance of square container；
It concatenates Step 2: material A is placed in graphitizing furnace, and is wrapped up the material A surrounding of concatenation with calcined coke particle,
Then it is powered 15 hours after being vacuumized in graphitizing furnace to material A, material A energization heat production rises in-furnace temperature gradually by room temperature
To 2800 DEG C, material B is obtained；
Step 3: material B is cooling, it comes out of the stove to obtain graphite anode.
Wherein, Fig. 1 shows the specific implementation form of graphitization pretreating device comprising：
Upper opening square container is provided with entrance on the side wall of its underpart, and is correspondingly arranged on and can seal closing and enter and leave
The switch gate of mouth, the bottom of container is provided with water-inflow and drain valve door 8；
Multiple elasticity roll bendings 4, wall is straggly at left and right sides of the top of square container is arranged alternately, the elasticity roll bending 4
For the arc panel being bent upwards, the chord length of arc panel is greater than the square container left side to the half of the right distance and is less than rectangular
To 2/3rds of the right distance, the corresponding angle of the arc panel is greater than 100 ° less than 180 ° on the container left side；
Multiple vibrators 2 are fixed on the lower section of the elastic roll bending 4；
The net cage 5 of upper opening, the closely up and down ground activity of energy are embedded in the lower part of the square container；
The bottom of the square container is arranged in telescopic rod 7, and connect with the bottom of the net cage 5 described to push
Net cage 5 moves up and down in the square container.
Further, in the lower part of the square container equipped with the naphtha for submerging the net cage 5.
Further, the upper opening of the square container is funnel inlet 1.
Further, the multiple elastic roll bending 4 is four elastic roll bendings 4, straggly to be arranged alternately specially in square container
Top at left and right sides of wall be respectively arranged two, and from top to bottom, first elastic roll bending 4 first is set in left side, then on the right side
Second elastic roll bending 4 is arranged in side 10-20cm lower than first, then low in the left side elastic roll bending 4 to the second of setting third
Then the 4th elastic roll bending 4 is arranged than the low 10-20cm of third on right side again in 10-20cm, the multiple vibrator 2 is four
A vibrator fixes a vibrator 2 in the lower section of each elastic roll bending 4, and the middle part that the vibrator is located at elastic roll bending 4 is arrived
Between square container wall fixed point, and it is located among the antetheca and rear wall of square container.
Further, the upper surface of the elastic roll bending 4 is provided with circular protrusions 3, and the side wall mesh of the net cage 5 is triangle
Shape mesh, the bottom thickness of net cage 5 are 0.5-2cm, and the mesh of bottom is bellmouth 6 from lower to upper.Bellmouth 6 makes net cage
During up and down motion, bigger impact force is generated to the substandard product of prebaked anode, and net cage is effectively prevent to deform, subtracted
Move up and down obstacle less, improves operational efficiency.
Further, the telescopic rod 7 is telescopic magnetic rod, and the bottom of the net cage 5 is made of soft magnetic material, so that
Telescopic magnetic rod in the energized state can be fixed by net cage 5 by magnetic force and plays pushing net cage in square container
It moves up and down.It is also possible that the substandard product of prebaked anode ceaselessly cutting magnetic induction line activated atom in magnetic field environment,
Be conducive to the transform in order in graphitizing process to Turbostratic to crystal structure of graphite.
Embodiment 5
A kind of preparation method of graphite anode comprising steps are as follows：
Step 1: using graphitization pretreating device of the invention, by the substandard product of prebaked anode from square container
Upper opening be added in graphitization pretreating device, make the rollback on first elastic roll bending of the substandard product of prebaked anode
It is dynamic, and the vibration of vibrator is combined, the substandard product for increasing prebaked anode rolls on first elastic roll bending and bounce frequency
Rate ceaselessly has prebaked anode after the substandard product of the prebaked anode of first elastic roll bending runs up to certain weight
Substandard product roll down on the second elastic roll bending, roll for second and bounce, until from the 4th elastic roll bending rolling
It falls in the net cage immersed with naphtha, then starts telescopic magnetic rod movement, so that telescopic magnetic rod is powered and generate magnetic field
Net cage bottom magnetic force made of soft magnetic material is fixed, stretching motion makes equipped with prebaked anode telescopic magnetic rod up and down
The net cage of substandard product ceaselessly moves up and down in naphtha, realizes naphtha to the substandard product of prebaked anode not
Stop washing away 1 hour, then has a power failure to telescopic magnetic rod and filtration naphtha is discharged, then from the side wall entrance of square container
Material A is taken out；
It concatenates Step 2: material A is placed in graphitizing furnace, and is wrapped up the material A surrounding of concatenation with calcined coke particle,
Then it is powered 10 hours after being vacuumized in graphitizing furnace to material A, material A energization heat production rises in-furnace temperature gradually by room temperature
To 2200 DEG C, material B is obtained；
Step 3: material B is cooling, it comes out of the stove to obtain graphite anode.
Comparative example 1：The substandard product of the same amount of prebaked anode of same quality is carried out preparing graphite anode, but not into
Row pretreatment, other steps are identical with embodiment 1, to the inside transverse fissure for the graphite anode that embodiment 1 and comparative example 1 prepare
The average value comparison such as table 1 of accounting, real density, room temperature resistivity, compressive resistance, content of ashes.
Comparative example 2：The substandard product of the same amount of prebaked anode of same quality is carried out preparing graphite anode, but is not had to
Calcined coke particle wraps up the material A surrounding of concatenation, and also not to vacuumizing in graphitizing furnace, other steps are identical with embodiment 2,
To inside transverse fissure accounting, the real density, room temperature resistivity, resistance to pressure of the graphite anode that embodiment 2 and comparative example 2 prepare
The average value comparison such as table 2 of degree, content of ashes.
Comparative example 3：The substandard product of the same amount of prebaked anode of same quality is carried out preparing graphite anode, but is not made
It is pre-processed with graphitization pretreating device of the invention, other steps are identical with embodiment 5, to embodiment 5 and comparative example 3
The inside transverse fissure accounting of the graphite anode prepared, real density, room temperature resistivity, compressive resistance, content of ashes average value
Comparison such as table 23.
Table 1：
Table 2：
Table 3：
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With.It can be applied to various suitable the field of the invention completely.It for those skilled in the art, can be easily
Realize other modification.
Claims (10)
1. a kind of preparation method of graphite anode, which is characterized in that including steps are as follows：
Pretreatment 1-2 hours is carried out Step 1: the substandard product of prebaked anode is placed in graphitization pretreating device, obtains object
Expect A；
Concatenate Step 2: material A is placed in graphitizing furnace, and wrapped up the material A surrounding of concatenation with filler material, then every
To material A energization 10-15 hours under conditions of exhausted air, material A energization heat production rises to in-furnace temperature gradually by room temperature
2200-3000 DEG C, obtain material B；
Step 3: material B is cooling, it comes out of the stove to obtain graphite anode.
2. the preparation method of graphite anode as described in claim 1, which is characterized in that completely cut off the item of air in the step 2
Part is that will vacuumize in graphitizing furnace.
3. the preparation method of graphite anode as claimed in claim 2, which is characterized in that the filler material is calcined coke particle.
4. the preparation method of graphite anode as described in claim 1, which is characterized in that the graphitization pretreating device packet
It includes：
Upper opening square container is provided with entrance on the side wall of its underpart, and is correspondingly arranged on to seal and closes entrance
Switch gate, the bottom of container are provided with water-inflow and drain valve door；
It is multiple elasticity roll bendings, inner wall is straggly at left and right sides of the top of square container is arranged alternately, it is described elasticity roll bending be to
Upper curved arc panel, the chord length of arc panel are greater than the square container left side to the half of the right distance and are less than square container
To 2/3rds of the right distance, the corresponding angle of the arc panel is greater than 100 ° less than 180 ° on the left side；
Multiple vibrators are fixed on the lower section of the elastic roll bending；
The net cage of upper opening, the closely up and down ground activity of energy are embedded in the lower part of the square container；
The bottom of the square container is arranged in telescopic rod, and connect with the bottom of the net cage to push the net cage to exist
It is moved up and down in the square container.
5. the preparation method of graphite anode as claimed in claim 4, which is characterized in that be equipped in the lower part of the square container
Submerge the naphtha of the net cage.
6. the preparation method of graphite anode as claimed in claim 4, which is characterized in that the upper opening of the square container is leakage
Struggle against entrance.
7. the preparation method of graphite anode as claimed in claim 4, which is characterized in that the multiple elasticity roll bending is four bullets
Property roll bending, it is straggly to be arranged alternately the wall specially at left and right sides of the top of square container and be respectively arranged two, and from top to bottom, first
First elastic roll bending is set in left side, then second elastic roll bending is arranged in 10-20cm lower than first on right side, then on a left side
The elastic roll bending of third 10-20cm lower than second is arranged in side, and the 4th elastic roll bending then is arranged than third on right side again
Low 10-20cm, the multiple vibrator are four vibrators, fix a vibrator below each elastic roll bending, described
The middle part that vibrator is located at elastic roll bending is arrived between square container wall fixed point, and in the antetheca and rear wall of square container
Between.
8. as the described in any item graphite anodes of claim 4-7 preparation method, which is characterized in that it is described elasticity roll bending it is upper
Surface is provided with circular protrusions, and the side wall mesh of the net cage is triangular mesh, and the bottom thickness of net cage is 0.5-2cm, bottom
The mesh in portion is bellmouth from lower to upper.
9. the preparation method of graphite anode as claimed in claim 8, which is characterized in that the telescopic rod is telescopic magnetic force
The bottom of bar, the net cage is made of soft magnetic material, so that telescopic magnetic rod can be incited somebody to action in the energized state by magnetic force
Net cage is fixed, and can be played pushing net cage and be moved up and down in square container.
10. the preparation method of graphite anode as claimed in claim 9, which is characterized in that by prebaked anode in the step 1
Substandard product be placed in graphitization pretreating device and carry out pretreated concrete operations and be：By the unqualified production of prebaked anode
Product do not conform to prebaked anode by multiple elastic roll bendings from being added in graphitization pretreating device in the upper opening of square container
Lattice product constantly rub and collide after enter net cage in, by net cage drive prebaked anode substandard product in naphtha not
It impregnates impact 1-2 hours with stopping, then have a power failure to telescopic rod and filtration naphtha is discharged, then go out from the side wall of square container
Entrance takes out material A.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810689678.3A CN108866575B (en) | 2018-06-28 | 2018-06-28 | Preparation method of graphite anode |
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|---|---|---|---|
| CN201810689678.3A CN108866575B (en) | 2018-06-28 | 2018-06-28 | Preparation method of graphite anode |
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| CN108866575B CN108866575B (en) | 2023-07-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112299406A (en) * | 2020-11-24 | 2021-02-02 | 杨金平 | Negative electrode material graphitization preparation process |
| CN112876249A (en) * | 2021-01-13 | 2021-06-01 | 山西沁新能源集团股份有限公司 | Method for preparing prebaked anode, prebaked anode and application thereof |
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| CN105441979A (en) * | 2015-12-18 | 2016-03-30 | 云南云铝润鑫铝业有限公司 | Method for preparing prebaked anode by using aluminum electrolysis waste carbon cathode |
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| CN102146570A (en) * | 2011-02-26 | 2011-08-10 | 王建军 | Method for producing aluminum anode by using waste cathode carbon block of aluminum cell |
| CN102304726A (en) * | 2011-09-16 | 2012-01-04 | 云南云铝润鑫铝业有限公司 | Aluminum electrolytic prebaked anode and preparation method thereof |
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| CN105841500A (en) * | 2016-04-15 | 2016-08-10 | 贵州顺安机电设备有限公司 | Energy-saving method and device of lengthwise graphitization furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112299406A (en) * | 2020-11-24 | 2021-02-02 | 杨金平 | Negative electrode material graphitization preparation process |
| CN112876249A (en) * | 2021-01-13 | 2021-06-01 | 山西沁新能源集团股份有限公司 | Method for preparing prebaked anode, prebaked anode and application thereof |
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| Publication number | Publication date |
|---|---|
| CN108866575B (en) | 2023-07-28 |
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