CN115353393B - Production method of large prebaked anode - Google Patents
Production method of large prebaked anode Download PDFInfo
- Publication number
- CN115353393B CN115353393B CN202211018517.4A CN202211018517A CN115353393B CN 115353393 B CN115353393 B CN 115353393B CN 202211018517 A CN202211018517 A CN 202211018517A CN 115353393 B CN115353393 B CN 115353393B
- Authority
- CN
- China
- Prior art keywords
- furnace chamber
- furnace
- temperature
- cooling
- prebaked anode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C04B35/528—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 obtained from carbonaceous particles with or without other non-organic components
- C04B35/532—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 obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
-
- 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
- C04B35/64—Burning or sintering processes
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a production method of a large prebaked anode, which comprises the following steps: A. preheating the large prebaked anode in a sealed furnace chamber, then feeding the preheated anode into a 1p furnace chamber, carrying out 28-hour or 56-hour heating operation in the 1p furnace chamber, and then feeding the heated anode into a 2p furnace chamber; B. continuously heating the large prebaked anode in a 2p furnace chamber for 28 hours, and sequentially feeding the large prebaked anode into the furnace chambers of the subsequent heating stages for 28-hour heating treatment; C. heating the large prebaked anode in an X +1 furnace chamber, and then feeding the large prebaked anode into an X +2 furnace chamber; D. heating the large-scale prebaked anode to 1185 ℃ in an X +2 furnace chamber, preserving heat for 28 hours, and sequentially feeding the large-scale prebaked anode into a subsequent furnace chamber for 28-hour high-temperature sintering treatment; E. then the materials are sequentially sent into each cooling furnace chamber for cooling treatment and discharged from the furnace. The invention obviously improves the yield and reduces the cost on the premise of ensuring the product quality and not increasing the energy consumption.
Description
Technical Field
The invention relates to the technical field of aluminum smelting, in particular to a production method of a large prebaked anode.
Background
The prebaked anode is made of petroleum coke and pitch coke as aggregates and coal pitch as a binder and is used as an anode material of a prebaked aluminum electrolytic cell. The carbon block has been roasted and has a stable geometry, so the carbon block is also called as a prebaked anode carbon block and is also called as a carbon anode for aluminum electrolysis in a conventional way. An aluminum electrolytic cell using prebaked anode carbon blocks as anodes is called a prebaked anode electrolytic cell, and is called a prebaked cell for short, and is a modern large-scale aluminum electrolytic cell. The anode carbon block is produced by using petroleum coke as a raw material and coal pitch as a binder and through the procedures of calcining the petroleum coke, crushing the petroleum coke, sieving, finely crushing the petroleum coke, melting pitch, blending, kneading, molding, roasting and the like.
An open-type ring-type anode roasting furnace is a heat treatment furnace most commonly used in the production process of prebaked anodes, and the ring-type roasting furnace is characterized in that a plurality of furnace chambers with the same structure are arranged in double rows, wherein two rows of end furnace chambers are connected through a communicating flue to form a first end and a last end connection, and the ring-type roasting furnace runs according to a moving flame system to carry out roasting heat treatment on a pressed green product.
The existing prebaked anode roasting furnace for the 500KA electrolytic cell adopts a flame moving period process of 30 hours or more, and the process has the defects of long flame moving period, low roasting furnace capacity, no contribution to improving the labor productivity and production profit of enterprises and influence on the further development of enterprises. In order to solve the above problems, some enterprises have tried to develop a 28-hour moving cycle process, but the 28-hour moving cycle process is difficult to develop, and is prone to causing problems such as too high energy consumption or deteriorated anode quality, and thus is not successfully developed.
Disclosure of Invention
The invention aims to provide a method for producing a large prebaked anode, which uses a 28-hour flame moving cycle process technology under the condition of not changing the existing original combustion materials and key equipment, and realizes that the yield is obviously improved and the production cost is reduced on the premise of ensuring the product quality of an anode roasting furnace and not increasing the energy consumption.
The technical scheme of the invention is as follows:
the production of the large prebaked anode is carried out by adopting an anode roasting furnace, and a furnace chamber of the anode roasting furnace is sequentially divided into a temperature rise section, a high-temperature sintering section and a cooling section according to a production stage, wherein the temperature rise section is provided with X furnace chambers of the temperature rise stage which are sequentially connected, the high-temperature sintering section is provided with Y furnace chambers of the high-temperature sintering stage which are sequentially connected, and the cooling section is provided with Z furnace chambers of the cooling stage which are sequentially connected;
X＝3～4，Y＝3～4，Z≥8；
the production method comprises the following steps:
A. the large-scale prebaked anode enters a furnace chamber of a first temperature rise stage after being preheated by a sealed furnace chamber, namely a furnace chamber of 1p, and high-temperature flue gas in the furnace chamber of the high-temperature sintering stage flows to the furnace chamber of each temperature rise stage by vacuum extraction in the furnace chamber of 1p, and the temperature rise of the large-scale prebaked anode is controlled by controlling the vacuum degree, wherein the temperature rise target curve control process is as follows:
when the furnace chamber of 1p is a normal furnace chamber, the heating treatment is carried out for 28 hours, and the control process of a heating target curve is shown in the following table:
| time, hour | Target temperature,. Degree.C |
| 0.0 | 235-265 |
| 2.0 | 261-291 |
| 4.0 | 283-313 |
| 8.0 | 323-353 |
| 16.0 | 395-425 |
| 21.0 | 440-470 |
| 28.0 | 510-540 |
When the furnace chamber of 1p is a turning furnace chamber, 56-hour heating treatment is carried out, and the control process of a heating target curve is shown in the following table:
| time, hour | Target temperature,. Degree.C |
| 0.0 | 75-95 |
| 4.0 | 99-119 |
| 16.0 | 159-179 |
| 21.0 | 189-209 |
| 28.0 | 235-255 |
| 32.0 | 263-283 |
| 44.0 | 335-355 |
| 49.0 | 368-388 |
| 56.0 | 420-440 |
B. After the 1p temperature rise control is finished, the furnace chamber is sent to a second temperature rise stage furnace chamber, namely a 2p furnace chamber, the temperature rise treatment is continuously carried out for 28 hours, then the furnace chamber is continuously sent to a subsequent 3p-Xp temperature rise stage furnace chamber in sequence to carry out the temperature rise treatment for 28 hours respectively, and then the furnace chamber is sent to a first high-temperature sintering stage furnace chamber, namely an X +1 furnace chamber; at the last moment of the temperature rise process of the Xp furnace chamber, the temperature target of the Xp furnace chamber is 890-900 ℃;
C. carrying out 28-hour heating operation on the large-scale prebaked anode in an X +1 furnace chamber, and then feeding the large-scale prebaked anode into a second high-temperature sintering stage furnace chamber, namely an X +2 furnace chamber; the control process of the temperature-rise target curve in the X +1 furnace chamber is shown as the following table:
D. heating the large-scale prebaked anode to 1185 ℃ in an X +2 furnace chamber for 4-8 hours, keeping the temperature and continuously processing until the retention time in the X +2 furnace chamber reaches 28 hours, then continuously and sequentially feeding the large-scale prebaked anode into subsequent X +3 to X + Y furnace chambers to perform high-temperature sintering processing for 28 hours, and keeping the temperature in the furnace chambers at 1185 ℃ all the time;
E. after the high-temperature sintering treatment of the X + Y furnace chambers is finished, the materials are sequentially sent into each cooling furnace chamber for cooling treatment, the cooling treatment time in each cooling furnace chamber is 28 hours, and then the materials are discharged from the furnace.
In the 1p furnace chamber, the temperature difference control of the side flame path is as follows: -50 to 30 ℃.
When the 1p furnace chamber is a normal furnace chamber, the negative pressure of the middle flame path is-140 to-120 Pa, and the negative pressure of the side flame path is-200 to-140 Pa;
when the 1p furnace chamber is a turning furnace chamber, the negative pressure of the middle flame path is-150 to-135 Pa, and the negative pressure of the side flame path is-180 to-150 Pa.
And a blast frame is arranged at the cooling furnace chamber in the middle of the cooling section for blasting.
And 2-3 cooling furnace chambers at the rear part of the cooling section blow air to the flame path.
Each flame path in the rear cooling furnace chamber of the cooling section is respectively provided with a cooling fan; the power of a single cooling fan is 5.5KW, and the air volume is 4012-7419m 3 The wind pressure is 1320-2014 Pa.
The invention has the following beneficial effects:
the energy consumption of the anode produced by the method is obviously reduced, and the unit consumption of the anode natural gas is 54.48m for the production of the 60-chamber open-type ring anode roasting furnace through verification of examples 1 and 2 3 Reduction in t of 53.20m 3 And/t, the advanced level of the same furnace type in the industry is achieved.
The capacity of the anode produced by the method is remarkably improved, 963t can be produced more per month for the production of a single 60-chamber open-type ring anode roasting furnace, the annual profit is increased by 786.56 ten thousand yuan, and the effect is considerable.
The method of the invention obviously improves the yield and reduces the production cost on the premise of not deteriorating the appearance, the quality of physical and chemical indexes and not increasing the energy consumption.
Detailed Description
The present invention will be described in detail with reference to examples.
Example 1
The method for producing the large prebaked anode provided in this embodiment includes the following steps:
the production of the large prebaked anode is carried out by adopting a 60-chamber open-type ring-type roasting furnace, and a temperature rising section, a high-temperature sintering section and a cooling section are sequentially divided into a furnace chamber of the anode roasting furnace according to a production stage; wherein, the temperature-rising section is provided with 4 furnace chambers in the temperature-rising stage, namely 1p-4p furnace chambers, which are connected in sequence; the high-temperature sintering section is provided with 3 high-temperature sintering stage furnace chambers which are connected in sequence, namely 5p-7p furnace chambers; the cooling section is provided with 10 cooling furnace chambers which are sequentially connected, namely 1c-10c furnace chambers; all the furnace chambers are normal furnace chambers;
the production method comprises the following steps:
A. the large-scale prebaked anode enters a furnace chamber of a first temperature-rise stage after being preheated by a sealed furnace chamber, namely a furnace chamber of 1p, and high-temperature flue gas in the furnace chamber of the high-temperature sintering stage flows to the furnace chamber of each temperature-rise stage through vacuum extraction in the furnace chamber of 1p, and the large-scale prebaked anode is subjected to temperature-rise control by controlling the vacuum degree, wherein the temperature-rise target curve control process is as follows:
the furnace chamber 1p is a normal furnace chamber, the heating treatment is carried out for 28 hours, and the control process of a heating target curve is shown in the following table:
B. after 1p temperature rise control is finished, the large-sized prebaked anode is sent into a 2p furnace chamber to be continuously subjected to 28-hour temperature rise treatment, then is sequentially sent into subsequent 3p-4p temperature rise stage furnace chambers to be subjected to 28-hour temperature rise treatment respectively, and then is sent into a first high-temperature sintering stage furnace chamber, namely a 5p furnace chamber; the target temperature of the 4p furnace chamber is 900 ℃ at the last moment of the temperature rise process of the 4p furnace chamber;
C. the large prebaked anode is subjected to temperature rise operation in a 5p furnace chamber and then is sent into a 6p-7p furnace chamber, wherein when the large prebaked anode enters the 6p and 7p furnace chambers, the target temperature is specially set half an hour after the furnace is moved to avoid the too high temperature rise rate in a short time due to the temperature reduction in the furnace, and the temperature rise operation process of the 5p-7p furnace chamber is as follows:
the temperature rise target curve control process is shown in the following table:
D. after the high-temperature sintering treatment is finished, sequentially sending the materials into 1c-10c cooling furnace chambers for cooling treatment, wherein the cooling treatment time in each cooling furnace chamber is 28 hours, and then discharging the materials out of the furnace;
4c, a blast frame is arranged at the cooling furnace chamber for blasting;
8 cooling fans are arranged on a cooling fan frame in the 6c-7c cooling furnace chamber and respectively blow air corresponding to each flame path; the power of a single cooling fan is 5.5KW, and the air volume is 5000-6000m 3 The wind pressure is 1400-1800 Pa.
By adopting the process, (1) the anode appearance and the quality of physical and chemical indexes are kept in a high-level state, the appearance qualification rate reaches 99.64 percent, and the rate of more than the physical and chemical index mark TY-1 reaches 94.69 percent. (2) The energy consumption of the anode is obviously reduced, and the unit consumption of the anode natural gas is 54.48m 3 The/t is reduced to 53.20m 3 And/t, the advanced level of the same furnace type in the industry is achieved. (3) The anode capacity is improved remarkably, 963t is produced more every month, the annual profit is increased by 786.56 ten thousand yuan, and the effect is considerable.
Example 2
The method for producing the large prebaked anode provided by the embodiment comprises the following steps of:
the production of the large prebaked anode is carried out by adopting an anode roasting furnace, and a furnace chamber of the anode roasting furnace is sequentially divided into a temperature rising section, a high-temperature sintering section and a cooling section according to a production stage, wherein the temperature rising section is provided with 4 furnace chambers of the temperature rising stage, namely 1p-4p furnace chambers, which are sequentially connected; the high-temperature sintering section is provided with 3 high-temperature sintering stage furnace chambers which are connected in sequence, namely 5p-7p furnace chambers; the cooling section is provided with 10 cooling furnace chambers which are sequentially connected, namely 1c-10c furnace chambers; wherein, 1p is a turning furnace chamber, and all the other furnace chambers are normal furnace chambers;
the production method comprises the following steps:
the large-scale prebaked anode enters a furnace chamber of a first temperature-rise stage after being preheated by a sealed furnace chamber, namely a furnace chamber of 1p, and high-temperature flue gas in the furnace chamber of the high-temperature sintering stage flows to the furnace chamber of each temperature-rise stage through vacuum extraction in the furnace chamber of 1p, and the large-scale prebaked anode is subjected to temperature-rise control by controlling the vacuum degree, wherein the temperature-rise target curve control process is as follows:
the 1p furnace chamber is a turning furnace chamber, 56-hour heating treatment is carried out, and the control process of a heating target curve is shown in the following table:
B. after 1p temperature rise control is finished, the large-sized prebaked anode is sent into a 2p furnace chamber to be continuously subjected to 28-hour temperature rise treatment, then is sequentially sent into subsequent 3p-4p temperature rise stage furnace chambers to be subjected to 28-hour temperature rise treatment respectively, and then is sent into a first high-temperature sintering stage furnace chamber, namely a 5p furnace chamber; at the last moment of the temperature rise process of the 4p furnace chamber, the temperature target of the 4p furnace chamber is 900 ℃;
C. the large-size prebaked anode is subjected to temperature rise operation in a 5p furnace chamber and then is sent into a 6p-7p furnace chamber, wherein when the large-size prebaked anode enters the 6p and 7p furnace chambers, the target temperature is specially set half an hour after the furnace is moved to avoid the too high temperature rise rate in a short time due to the reduction of the temperature in the furnace, and the temperature rise operation process of the 5p-7p furnace chamber is as follows:
the temperature rise target curve control process is shown in the following table:
| time, hour | Target temperature,. Degree.C | Temperature rise rate of DEG C/hr |
| 0 | 890 | 0.0 |
| 1.5 | 905 | 10.0 |
| 10 | 1000 | 11.2 |
| 18 | 1080 | 10.0 |
| 28 | 1165 | 8.5 |
| 28.5 | 1150 | -30.0 |
| 34 | 1185 | 6.4 |
| 56 | 1185 | 0.0 |
| 56.5 | 1170 | -30.0 |
| 60 | 1185 | 4.3 |
| 84 | 1185 | 0.0 |
D. After the high-temperature sintering treatment is finished, sequentially sending the materials into 1c-10c cooling furnace chambers for cooling treatment, wherein the cooling treatment time in each cooling furnace chamber is 28 hours, and then discharging the materials out of the furnace;
4c, a blast frame is arranged at the cooling furnace chamber for blasting;
8 cooling fans are arranged on the cooling fan frames in the 6c-7c cooling furnace chambers and blow air respectively corresponding to each flame path; the power of a single cooling fan is 5.5KW, and the air quantity is 4500-5500m 3 The wind pressure is 1600-2000 Pa.
By adopting the process, 1) the anode appearance and the quality of physical and chemical indexes are kept in a high-level state, the appearance qualification rate reaches 99.52 percent, and the rate of more than the physical and chemical index mark TY-1 reaches 91.69 percent. (2) The energy consumption of the anode is obviously reduced, and the unit consumption of the anode natural gas is 57.48m 3 The t is reduced to 55.20m 3 And/t, the advanced level of the same furnace type in the industry is achieved. (3) The anode capacity is remarkably improved, 963t is produced more per month, the annual profit is increased by 786.56 ten thousand yuan, and the effect is considerable.
Claims (6)
1. A production method of a large prebaked anode is characterized by comprising the following steps:
the production of the large prebaked anode is carried out by adopting an anode roasting furnace, and a furnace chamber of the anode roasting furnace is sequentially divided into a temperature rise section, a high-temperature sintering section and a cooling section according to a production stage, wherein the temperature rise section is provided with X furnace chambers of the temperature rise stage which are sequentially connected, the high-temperature sintering section is provided with Y furnace chambers of the high-temperature sintering stage which are sequentially connected, and the cooling section is provided with Z furnace chambers of the cooling stage which are sequentially connected; x =3-4, Y =3-4, Z ≧ 8;
a combustion frame is arranged in each high-temperature sintering stage furnace chamber, and the first furnace chamber of the heating-up section is a vacuum extraction end;
the production method comprises the following steps:
A. the large-scale prebaked anode enters a furnace chamber of a first temperature-rise stage after being preheated by a sealed furnace chamber, namely a furnace chamber of 1p, and high-temperature flue gas in the furnace chamber of the high-temperature sintering stage flows to the furnace chamber of each temperature-rise stage through vacuum extraction in the furnace chamber of 1p, and the large-scale prebaked anode is subjected to temperature-rise control by controlling the vacuum degree, wherein the temperature-rise target curve control process is as follows:
when the furnace chamber of 1p is a normal furnace chamber, the heating treatment is carried out for 28 hours, and the control process of a heating target curve is shown in the following table:
When the furnace chamber 1p is a turning furnace chamber, 56-hour heating treatment is carried out, and the control process of a heating target curve is shown in the following table:
B. after the 1p temperature rise control is finished, the furnace chamber is sent to a second temperature rise stage furnace chamber, namely a 2p furnace chamber, the temperature rise treatment is continuously carried out for 28 hours, then the furnace chamber is continuously sent to a subsequent 3p-Xp temperature rise stage furnace chamber in sequence to carry out the temperature rise treatment for 28 hours respectively, and then the furnace chamber is sent to a first high-temperature sintering stage furnace chamber, namely an X +1 furnace chamber; at the last moment of the temperature rise process of the Xp furnace chamber, the temperature target of the Xp furnace chamber is 890-900 ℃;
C. the large prebaked anode is heated for 28 hours in an X +1 furnace chamber and then is sent into a second high-temperature sintering stage furnace chamber, namely an X +2 furnace chamber; the control process of the temperature-rise target curve in the X +1 furnace chamber is shown as the following table:
D. Heating the large-scale prebaked anode to 1185 ℃ in an X +2 furnace chamber for 4-8 hours, keeping the temperature and continuously processing until the retention time in the X +2 furnace chamber reaches 28 hours, then continuously and sequentially feeding the large-scale prebaked anode into subsequent X +3 to X + Y furnace chambers to perform high-temperature sintering processing for 28 hours, and keeping the temperature in the furnace chambers at 1185 ℃ all the time;
E. after the high-temperature sintering treatment of the X + Y furnace chambers is finished, the materials are sequentially sent into each cooling furnace chamber for cooling treatment, the cooling treatment time in each cooling furnace chamber is 28 hours, and then the materials are discharged from the furnace.
2. The method for producing a large-sized prebaked anode according to claim 1, wherein:
in the 1p furnace chamber, the temperature difference control of the side flame path is as follows: -50 to 30 ℃.
3. The method for producing a large-sized prebaked anode according to claim 1, wherein:
when the 1p furnace chamber is a normal furnace chamber, the negative pressure of the middle flame path is-140 to-120 Pa, and the negative pressure of the side flame path is-200 to-140 Pa;
when the 1p furnace chamber is a turning furnace chamber, the negative pressure of the middle flame path is-150 to-135 Pa, and the negative pressure of the side flame path is-180 to-150 Pa.
4. The method for producing a large-sized prebaked anode according to claim 1, wherein: and a blast frame is arranged at the cooling furnace chamber in the middle of the cooling section for blasting.
5. The method for producing a large-sized prebaked anode according to claim 4, wherein: and 2-3 cooling furnace chambers at the rear part of the cooling section blow air to the flame path.
6. The method for producing a large-sized prebaked anode according to claim 5, wherein:
each flame path in the rear cooling furnace chamber of the cooling section is respectively provided with a cooling fan; the power of a single cooling fan is 5.5KW, and the air volume is 4012-7419m 3 The wind pressure is 1320-2014 Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211018517.4A CN115353393B (en) | 2022-08-24 | 2022-08-24 | Production method of large prebaked anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211018517.4A CN115353393B (en) | 2022-08-24 | 2022-08-24 | Production method of large prebaked anode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115353393A CN115353393A (en) | 2022-11-18 |
| CN115353393B true CN115353393B (en) | 2023-01-06 |
Family
ID=84004893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211018517.4A Active CN115353393B (en) | 2022-08-24 | 2022-08-24 | Production method of large prebaked anode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115353393B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5456808A (en) * | 1991-11-07 | 1995-10-10 | Comalco Aluminium Limited | Method for operating a continuous prebaked anode cell by locating resistance reducing materials to control the rate of heat extraction |
| CN1924106A (en) * | 2006-08-29 | 2007-03-07 | 兰州铝业股份有限公司 | Prebaked-anode baking heating-up technology |
| CN101260546A (en) * | 2008-04-21 | 2008-09-10 | 湖南晟通科技有限公司 | Aluminum electrolysis prebake anode roasting 24 hours period production technique |
| CN101314859A (en) * | 2007-06-01 | 2008-12-03 | 抚顺铝业有限公司 | Setting method for temperature elevation curve of pre-baked anode in torrefaction heating period |
| CN101333670A (en) * | 2008-08-06 | 2008-12-31 | 中国铝业股份有限公司 | Prewarming process in baking process of prebaked anode |
| US20120097154A1 (en) * | 2009-06-15 | 2012-04-26 | Rio Tinto Alcan International Limited | Control process for an anode baking furnace and adapted furnace using such process |
| CN110514008A (en) * | 2019-08-30 | 2019-11-29 | 嘉峪关索通炭材料有限公司 | A kind of anode-baking furnace production technology |
-
2022
- 2022-08-24 CN CN202211018517.4A patent/CN115353393B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5456808A (en) * | 1991-11-07 | 1995-10-10 | Comalco Aluminium Limited | Method for operating a continuous prebaked anode cell by locating resistance reducing materials to control the rate of heat extraction |
| CN1924106A (en) * | 2006-08-29 | 2007-03-07 | 兰州铝业股份有限公司 | Prebaked-anode baking heating-up technology |
| CN101314859A (en) * | 2007-06-01 | 2008-12-03 | 抚顺铝业有限公司 | Setting method for temperature elevation curve of pre-baked anode in torrefaction heating period |
| CN101260546A (en) * | 2008-04-21 | 2008-09-10 | 湖南晟通科技有限公司 | Aluminum electrolysis prebake anode roasting 24 hours period production technique |
| CN101333670A (en) * | 2008-08-06 | 2008-12-31 | 中国铝业股份有限公司 | Prewarming process in baking process of prebaked anode |
| US20120097154A1 (en) * | 2009-06-15 | 2012-04-26 | Rio Tinto Alcan International Limited | Control process for an anode baking furnace and adapted furnace using such process |
| CN110514008A (en) * | 2019-08-30 | 2019-11-29 | 嘉峪关索通炭材料有限公司 | A kind of anode-baking furnace production technology |
Non-Patent Citations (2)
| Title |
|---|
| 优化焙烧工艺对预焙阳极质量的影响;张世荣等;《轻金属》;20051231(第7期);第48-51页 * |
| 炭阳极焙烧炉7室运行实践;邢召路等;《炭素技术》;20171231;第36卷(第5期);第58-61页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115353393A (en) | 2022-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114277205A (en) | Method for determining optimal injection amount of blast furnace injection medium | |
| CN211425033U (en) | Vertical continuous furnace kiln for producing lithium battery negative electrode materials | |
| CN115353393B (en) | Production method of large prebaked anode | |
| CN104152666A (en) | Heat treatment process for producing high-quality die steel in car bottom furnace | |
| CN105483034B (en) | A method of conversion yeast mating type | |
| CN108439999A (en) | A kind of method of roasting for improving prebaked anode product yield and reducing energy consumption | |
| CN104624642B (en) | A kind of sputtering target material milling method of big substance wide cut molybdenum plate band | |
| CN105087632B (en) | saccharomyces cerevisiae chromosome and construction method and application thereof | |
| CN107914016B (en) | Production method of molybdenum strip | |
| CN116199435A (en) | Calcining limestone and recovering CO 2 Is a method of (2) | |
| CN102517320A (en) | Gene recombination method of Klebsiella pneumoniae | |
| CN109400162A (en) | A kind of electrical discharge machining graphite and preparation method thereof | |
| CN109797271B (en) | Method for quickly producing continuous annealing furnace again | |
| US4568272A (en) | Method of operating an open ring-type furnace | |
| CN111394548B (en) | Preparation method of large shell of coal mining machine | |
| JP2520545B2 (en) | Manufacturing method of molding coke for metallurgy | |
| CN117628915A (en) | Energy-saving production method for roasting large-sized prebaked anode | |
| CN112458256B (en) | 1.2746 (45 NiCrMoV or 4CrNi4 MoV) die steel annealing process | |
| CN112359298A (en) | High-toughness coarse-grain hard alloy and preparation method thereof | |
| CN111889600A (en) | Method for batch production of right-angle square steel by using precision forging machine | |
| CN114214352B (en) | Method for optimizing escherichia coli genome for lactose fermentation | |
| CN214470011U (en) | A new trend system that is used for tunnel furnace to improve binder removal quality and efficiency | |
| JP2520539B2 (en) | Manufacturing method of molding coke for metallurgy | |
| CN111663154A (en) | Operation method for quickly heating and charging electrolytic cell | |
| CN110530145B (en) | Kiln for producing vertical continuous lithium battery anode material and production process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |