CN116496085A - Preparation method of prebaked anode for electrolysis of semi-graphite aluminum - Google Patents
Preparation method of prebaked anode for electrolysis of semi-graphite aluminum Download PDFInfo
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- CN116496085A CN116496085A CN202310372489.4A CN202310372489A CN116496085A CN 116496085 A CN116496085 A CN 116496085A CN 202310372489 A CN202310372489 A CN 202310372489A CN 116496085 A CN116496085 A CN 116496085A
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 32
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 32
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 20
- 239000010439 graphite Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000012216 screening Methods 0.000 claims abstract description 6
- 238000001354 calcination Methods 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 238000005269 aluminizing Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 12
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000748 compression moulding Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000010405 anode material Substances 0.000 description 2
- 239000011335 coal coke Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002006 petroleum coke Substances 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- -1 aluminum ions Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/522—Graphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a preparation method of a prebaked anode for electrolysis of semi-graphite aluminum, which has the technical scheme that: selecting high-purity graphite powder, a proper binder and other raw materials, mixing the graphite powder with the binder and other raw materials to obtain a uniform mixture, placing the mixture into an extruder, and pre-pressing and forming the preliminarily formed anode in a die to further improve the compactness and uniformity of the anode; compared with the conventional prebaked anode, the invention can prepare more uniform mixture through the pretreatment works such as fine screening and drying of raw materials and the optimization control of the processes such as mixing preparation, extrusion molding, prepressing molding and the like, and meanwhile, in the extrusion molding and prepressing molding processes, more proper extrusion pressure and extrusion speed can be adopted, and the compactness and uniformity of the anode are further improved through die extrusion molding, so that the anode with higher uniformity can better adapt to the application requirements of semi-graphite aluminum electrolysis.
Description
Technical Field
The invention relates to the technical field of preparation of prebaked anodes, in particular to a preparation method of a prebaked anode for electrolysis of semi-graphite aluminum.
Background
The prebaked anode is an anode material used in aluminum electrolysis production, is a carbon block which is calcined in advance in the production process, is usually made of petroleum coke, coal coke and other materials, is an anode in an aluminum electrolysis cell, generates oxygen in electrolyte through electrolytic reaction, simultaneously participates in precipitation of aluminum in the electrolysis process, has higher conductivity and chemical stability, can keep longer service life, and has important influence on the purity, energy consumption, production efficiency and the like of aluminum in the aluminum electrolysis production.
In semi-graphite aluminum electrolysis, the anode material is usually a prebaked anode made of petroleum coke, coal coke and other materials, the anode has higher conductivity and chemical stability, can keep longer service life, and meanwhile, the preparation of a high-quality prebaked anode is very important for the stable operation of the semi-graphite aluminum electrolysis and the improvement of production efficiency.
The semi-graphite aluminum electrolysis is a technology widely applied to aluminum electrolysis production, wherein an anode is made of semi-graphite materials, therefore, the application of the uniform anode to the semi-graphite aluminum electrolysis is very important, if the anode is non-uniform, the electric field distribution in an electrolytic cell is non-uniform, so that the current density is non-uniform on the surface of the anode, the deposition of aluminum ions in electrolyte on the surface of the anode is non-uniform, aluminum particle aggregation is formed, the purity and the yield of aluminum are influenced, meanwhile, the non-uniform current density distribution can lead to non-uniform heat distribution generated in the electrolysis process, the temperature in the electrolytic cell is unstable, and the efficiency and the energy consumption of the electrolysis process are influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of a prebaked anode for semi-graphite aluminum electrolysis, which solves the problems in the prior art.
The technical aim of the invention is realized by the following technical scheme:
a preparation method of a prebaked anode for electrolysis of semi-graphite aluminum comprises the following steps: the method comprises the following steps of;
step one, preparing raw materials; selecting high-purity graphite powder and proper raw materials such as a binder, and performing pretreatment such as screening, drying and the like;
step two, mixing and preparing; mixing raw materials such as graphite powder and a binder, and controlling the mixing proportion and the mixing time to obtain a uniform mixture;
step three, extrusion molding; putting the mixture into an extruder, selecting proper extrusion pressure and extrusion speed, and forming the preliminary shape of the anode by extrusion molding through a die;
step four, prepressing and forming; pre-pressing the preliminarily molded anode in a mold to further improve compactness and uniformity of the anode;
step five, calcining treatment; placing the pre-pressed anode into a calciner for calcination treatment to improve the strength and stability of the anode, wherein the calcination temperature and time need to be controlled according to specific conditions;
step six, pre-baking treatment; prebaking the calcined anode to improve the oxidation resistance and chemical stability of the anode, wherein the prebaking temperature and time need to be controlled according to specific conditions;
step seven, post-processing treatment; and (3) machining the prebaked anode to remove the surface oxide layer to form the final anode shape and size.
Preferably, in the third step, the mixture is charged into a hopper of an extruder, and the pressure and speed of the extruder are adjusted, and a suitable die is selected according to the size and shape of the anode.
Preferably, in the third step, the mixture is extruded into a mold to form the preliminary shape of the anode, and the extrusion pressure and speed need to be controlled according to the specific situation to ensure the compactness and uniformity of the extruded anode.
Preferably, in the third step, the preliminarily molded anode is taken out from the mold and subjected to subsequent processing, and it should be noted that the anode after extrusion molding may have uneven compactness, and pre-compression molding is required to further improve the uniformity and compactness of the anode.
Preferably, in the fourth step, the preliminarily molded anode is placed in a pre-pressing mold, and the mold is placed in a pre-pressing machine, and a proper pre-pressing mold and pre-pressing force are selected according to the size and shape of the anode.
Preferably, in the fourth step, the compactness of the anode is further improved by applying a pre-pressing force, and the pre-pressing force needs to be adjusted according to specific conditions so as to ensure the uniformity and compactness of the anode.
Preferably, in the fourth step, the anode after pre-compression molding is taken out from the mold and subjected to subsequent treatment, and the anode after pre-compression molding has better uniformity and compactness and can be subjected to subsequent calcination and pre-baking treatment.
Preferably, in the seventh step, the surface of the anode is cleaned by ultrasonic waves to remove impurities and oxide layers on the surface, and then the surface of the anode is treated by chemical aluminizing and anodic oxidation to improve the smoothness and oxidation resistance of the surface of the anode.
In summary, the invention has the following advantages:
compared with the conventional prebaked anode, the invention can prepare more uniform mixture through the pretreatment works such as fine screening and drying of raw materials and the optimization control of the processes such as mixing preparation, extrusion molding, prepressing molding and the like, and meanwhile, in the extrusion molding and prepressing molding processes, more proper extrusion pressure and extrusion speed can be adopted, and the compactness and uniformity of the anode are further improved through die extrusion molding, so that the anode with higher uniformity can better adapt to the application requirements of semi-graphite aluminum electrolysis, improve the stability and efficiency of the electrolysis process and is more suitable for the application of the semi-graphite aluminum electrolysis.
Drawings
FIG. 1 is a schematic diagram of the process flow structure of the method of the present invention;
fig. 2 is a schematic diagram of a detailed flow structure of the third and fourth steps in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is apparent that the described embodiments are some, but not all, embodiments of the present invention, and all other embodiments obtained by persons of ordinary skill in the art without inventive labor based on the described embodiments of the present invention are included in the scope of protection of the present invention.
The following examples are illustrative of the present invention but are not intended to limit the scope of the invention. The conditions in the examples can be further adjusted according to specific conditions, and simple modifications of the method of the invention under the premise of the conception of the invention are all within the scope of the invention as claimed.
Referring to fig. 1 and 2, a method for preparing a prebaked anode for electrolysis of semi-graphite aluminum comprises the steps of: the method comprises the following steps of;
step one, preparing raw materials; selecting high-purity graphite powder and proper raw materials such as a binder, and performing pretreatment such as screening, drying and the like;
step two, mixing and preparing; mixing raw materials such as graphite powder and a binder, and controlling the mixing proportion and the mixing time to obtain a uniform mixture;
step three, extrusion molding; putting the mixture into an extruder, selecting proper extrusion pressure and extrusion speed, and forming the preliminary shape of the anode by extrusion molding through a die;
step four, prepressing and forming; pre-pressing the preliminarily molded anode in a mold to further improve compactness and uniformity of the anode;
step five, calcining treatment; placing the pre-pressed anode into a calciner for calcination treatment to improve the strength and stability of the anode, wherein the calcination temperature and time need to be controlled according to specific conditions;
step six, pre-baking treatment; prebaking the calcined anode to improve the oxidation resistance and chemical stability of the anode, wherein the prebaking temperature and time need to be controlled according to specific conditions;
step seven, post-processing treatment; and (3) machining the prebaked anode to remove the surface oxide layer to form the final anode shape and size.
Referring to fig. 1 and 2, in the third step, the mixture is charged into a hopper of an extruder, the pressure and speed of the extruder are adjusted, a proper mold is selected according to the size and shape of the anode, the mixture is extruded into the mold to form the preliminary shape of the anode, the extrusion pressure and speed are controlled according to specific conditions to ensure the compactness and uniformity of the extruded anode, the preliminarily formed anode is taken out from the mold to perform subsequent treatment, and it is noted that the anode after extrusion may have non-uniform compactness and pre-compression molding is required to further improve the uniformity and compactness of the anode.
Referring to fig. 1 and 2, in the fourth step, the preliminarily molded anode is placed in a pre-pressing mold, the mold is placed in a pre-pressing machine, a proper pre-pressing mold and pre-pressing force are selected according to the size and shape of the anode, in the fourth step, the compactness of the anode is further improved by applying the pre-pressing force, the pre-pressing force needs to be adjusted according to specific conditions so as to ensure the uniformity and compactness of the anode, in the fourth step, the anode after pre-pressing molding is taken out from the mold and is subjected to subsequent treatment, the anode after pre-pressing molding has better uniformity and compactness, and subsequent calcination and pre-baking treatment can be performed.
Referring to fig. 1 and 2, in the seventh step, the surface of the anode is cleaned by ultrasonic waves to remove impurities and oxide layers on the surface, and then the surface of the anode is treated by chemical aluminizing and anodic oxidation to improve the smoothness and oxidation resistance of the surface of the anode.
Working principle: referring to fig. 1-1, compared with the conventional prebaked anode, the method can prepare a more uniform mixture through the pretreatment work such as fine screening and drying of raw materials and the optimal control of the processes such as mixing preparation, extrusion molding, prepressing molding and the like, and meanwhile, in the extrusion molding and prepressing molding processes, more proper extrusion pressure and extrusion speed can be adopted, and the compactness and uniformity of the anode are further improved through die extrusion molding, so that the anode with higher uniformity can better adapt to the application requirements of semi-graphite aluminum electrolysis, improve the stability and efficiency of the electrolysis process and is more suitable for the application of the semi-graphite aluminum electrolysis.
Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that unless otherwise defined, technical or scientific terms used herein should be used in the ordinary sense of the present invention, and the use of the terms "comprising" or "including" or the like herein should be taken in a generic sense, to the effect that elements or items appearing before the term are covered by the terms or items listed after the term and their equivalents, without excluding other elements or items, and the terms "connected" or the like should not be limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect, "upper", "lower", "left", "right", etc. are merely intended to indicate relative positional relationships that may also be correspondingly altered when the absolute position of the subject matter being described is altered.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The preparation method of the prebaked anode for electrolysis of semi-graphite aluminum is characterized by comprising the following steps: the method comprises the following steps of;
step one, preparing raw materials; selecting high-purity graphite powder and proper raw materials such as a binder, and performing pretreatment such as screening, drying and the like;
step two, mixing and preparing; mixing raw materials such as graphite powder and a binder, and controlling the mixing proportion and the mixing time to obtain a uniform mixture;
step three, extrusion molding; putting the mixture into an extruder, selecting proper extrusion pressure and extrusion speed, and forming the preliminary shape of the anode by extrusion molding through a die;
step four, prepressing and forming; pre-pressing the preliminarily molded anode in a mold to further improve compactness and uniformity of the anode;
step five, calcining treatment; placing the pre-pressed anode into a calciner for calcination treatment to improve the strength and stability of the anode, wherein the calcination temperature and time need to be controlled according to specific conditions;
step six, pre-baking treatment; prebaking the calcined anode to improve the oxidation resistance and chemical stability of the anode, wherein the prebaking temperature and time need to be controlled according to specific conditions;
step seven, post-processing treatment; and (3) machining the prebaked anode to remove the surface oxide layer to form the final anode shape and size.
2. The method for preparing a prebaked anode for electrolysis of aluminum in semi-graphite according to claim 1, wherein in the third step, the mixture is charged into a hopper of an extruder, the pressure and speed of the extruder are adjusted, and a suitable die is selected according to the size and shape of the anode.
3. The method for preparing a prebaked anode for electrolysis of aluminum semi-graphite according to claim 1, wherein in the third step, the mixture is extruded into a mold to form the preliminary shape of the anode, and the extrusion pressure and speed are controlled according to specific conditions so as to ensure the compactness and uniformity of the anode after extrusion.
4. The method according to claim 1, wherein in the third step, the preliminarily formed anode is taken out of the mold and subjected to subsequent processing, and it is noted that the anode after extrusion may have uneven compactness and pre-press forming is required to further improve the uniformity and compactness of the anode.
5. The method for preparing a prebaked anode for electrolysis of aluminum in semi-graphite form according to claim 1, wherein in the fourth step, the preliminarily molded anode is placed in a pre-pressing mold, the mold is placed in a pre-pressing machine, and a proper pre-pressing mold and pre-pressing force are selected according to the size and shape of the anode.
6. The method for preparing a prebaked anode for electrolysis of aluminum in semi-graphite form according to claim 1, wherein in the fourth step, the compactness of the anode is further improved by applying a pre-pressing force, and the pre-pressing force needs to be adjusted according to specific conditions so as to ensure the uniformity and compactness of the anode.
7. The method for preparing a prebaked anode for electrolysis of aluminum in semi-graphite form according to claim 1, wherein in the fourth step, the pre-pressed anode is taken out from the mold and subjected to subsequent treatment, and the pre-pressed anode has better uniformity and compactness and can be subjected to subsequent calcination and prebaked treatment.
8. The method for preparing a prebaked anode for electrolysis of semi-graphite aluminum according to claim 1, wherein in the seventh step, the surface of the anode is cleaned by ultrasonic waves to remove impurities and oxide layers on the surface, and then the surface of the anode is treated by chemical aluminizing and anodic oxidation to improve the smoothness and oxidation resistance of the surface of the anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310372489.4A CN116496085A (en) | 2023-04-10 | 2023-04-10 | Preparation method of prebaked anode for electrolysis of semi-graphite aluminum |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310372489.4A CN116496085A (en) | 2023-04-10 | 2023-04-10 | Preparation method of prebaked anode for electrolysis of semi-graphite aluminum |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595759A (en) * | 1944-11-02 | 1947-12-16 | C D Patents Ltd | Improvements in or relating to the production of useful articles from coal |
| DE3802670A1 (en) * | 1988-01-29 | 1989-08-10 | Manfred Dr Akstinat | Process for manufacturing artificial-carbon bodies, especially carbon anodes for use in igneous electrolysis of aluminium |
| WO1994028200A1 (en) * | 1993-06-02 | 1994-12-08 | Moltech Invent S.A. | Treating prebaked carbon anodes for aluminium production |
| CN1485465A (en) * | 2003-09-02 | 2004-03-31 | 中国铝业股份有限公司 | Method for producing semi-graphite prebaked anode |
| CN114349512A (en) * | 2021-12-23 | 2022-04-15 | 广西强强碳素股份有限公司 | Method for preparing low-carbon slag prebaked anode for aluminum electrolysis |
| CN115448742A (en) * | 2022-08-29 | 2022-12-09 | 湖南圣瓷科技有限公司 | Aluminum oxide anti-static ceramic and preparation method thereof |
-
2023
- 2023-04-10 CN CN202310372489.4A patent/CN116496085A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB595759A (en) * | 1944-11-02 | 1947-12-16 | C D Patents Ltd | Improvements in or relating to the production of useful articles from coal |
| DE3802670A1 (en) * | 1988-01-29 | 1989-08-10 | Manfred Dr Akstinat | Process for manufacturing artificial-carbon bodies, especially carbon anodes for use in igneous electrolysis of aluminium |
| WO1994028200A1 (en) * | 1993-06-02 | 1994-12-08 | Moltech Invent S.A. | Treating prebaked carbon anodes for aluminium production |
| CN1485465A (en) * | 2003-09-02 | 2004-03-31 | 中国铝业股份有限公司 | Method for producing semi-graphite prebaked anode |
| CN114349512A (en) * | 2021-12-23 | 2022-04-15 | 广西强强碳素股份有限公司 | Method for preparing low-carbon slag prebaked anode for aluminum electrolysis |
| CN115448742A (en) * | 2022-08-29 | 2022-12-09 | 湖南圣瓷科技有限公司 | Aluminum oxide anti-static ceramic and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张德祥等: "《煤化工工艺学》", 30 September 1999, 煤炭工业出版社, pages: 455 * |
| 李其祥: "《炭素材料机械设备》", 31 August 1993, 冶金工业出版社, pages: 129 - 130 * |
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